Valence electrons in CO₂ = 16
Bonded electrons in CO₂ = 4 electrons of carbon and 2 electrons of each oxygen atom
Lone pairs of electrons in CO₂ = 2 l0ne pair of electrons on each oxygen atom
Single bonds in CO₂ = None
What is Lewis structure?A Lewis structure, also known as, Lewis dot structure, electron dot structure, is a diagram showing the bonds between the atoms of a molecule and the lone pairs of electrons present within the molecule.
Carbon dioxide is a colorless, odorless, non-flammable gas produced when carbon is burned. The ratio of carbon to oxygen in the CO₂ molecule is 1:2. Two double bonds join the carbon and oxygen atoms in the Lewis structure. There are two oxygen atoms at each end where they share electrons and form a bond with the central carbon atom. A Lewis structure diagram shows the number of valence electrons available for bond formation within an atom. You can also visualize the behavior of valence electrons in molecules and determine if lone pairs are present.
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give 4.5 moles of cr and 6.0 moles of n2, how many grams of cr2n3 (mw 146 g/mol) can be formed? 4 cr 3 n2 --> 2 cr2n3
Cr is the limiting reagent & the amount of Cr2N3 produced depends on the limiting reagent.
2 mol of Cr produces 146g of Cr2N3
1 mol ———————- 146/2g of Cr2N3
4.5 mol ——————- 146 x 4.5/2g of Cr2N3
=328.5g of Cr2N3
What is a Limiting Reagent?
The limiting reactant is the reagent (compound or element) to be totally consumed in a chemical reaction. Limiting reactants is also what prevents a reaction from continuing because there is none left.Thus, 328.5 g of cr2n3 can be formed.
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the electron configurations of five different elements are shown below. which of these elements is expected to have the largest second ionization energy (ie2)? (i) 1s22s22p63s1 (ii) 1s22s22p63s2 (iii) 1s22s22p63s23p1 (iv) 1s22s22p63s23p4 (v) 1s22s22p63s23p5
The electronic configuration which have highest second ionization energy will be "1s22s22p63s2".
The energy needed to free the outermost, or lowest bound, an electron from an element's 1+ ion is known as the second ionization energy. The secondary ionization energy of an element would be usually greater than the first since a positive charge greater strongly attracts electrons than a negative charge.
The electronic configuration is 1s22s22p63s2.
It can remove 2 electrons to gain positive charge.
By removing 2 electrons, it attain +2 charge
In mass spectrometry, a variety of ionization techniques are employed. Electron impact (EI) as well as Fast Atom Bombardment are the two traditional techniques that most chemists were familiar with (FAB).
Therefore, the correct answer will be option (ii)
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what is the real gas pressure exerted by 1.00 mol of o2 at 300. k in 2.41 l if the ideal pressure is 10.0 atm?
the real gas pressure for above question was 91.4atm
what is van der waals equatio?
The Van der Waals equation (or Van der Waals equation of state) is an equation of state used in chemistry and thermodynamics that extends the ideal gas law to take into account the effects of interactions between molecules in a gas as well as accounting for the finite size of the molecules.
The ideal gas law views gas molecules as point particles that interact only with their surroundings and not with one another, which means that when they collide, they do not occupy any space or change their kinetic energy.
The volume V occupied by n moles of any gas has a pressure P at a temperature T determined by the following relationship, according to the ideal gas law, where R is the gas constant:
PV=nRT
(pxn2a/v2) (v-nb)=nRt
p 10x1.36/2.41x2.41-10x0.0318
p 13.6/2.41x2.092
nRt=p2.69
10x0.08206x300/2.69
=91.4atm
therefore the real gas pressure =91.4atm
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Which examples are possible environmental impacts of flooding? Select the two correct answers. (1 point,
damage to homes
Reduction in tourism and Groundwater recharge are possible environmental impacts of flooding .
What are floods ?
During floods, people need to quickly move themselves and their most valuable possessions to higher ground. Leaving home in search of a safer place is called evacuation. Floods occur at irregular intervals and vary in magnitude, duration and areas affected.
Water flows naturally from high ground to low ground. This means that low-lying areas can flood quickly before they start reaching higher elevations. In rivers, flooding can occur, especially at bends and meanders in the channel, when flow exceeds the bed's capacity. Floods often damage homes and businesses when they are in the natural floodplains of rivers.
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serine proteases make use of which strategy among the four general strategies for catalysis? a.catalysis by approximation b. non-covalent c.covalent d. metal ion
One of the four general catalytic methods used by serine proteases is catalysis by approximation.
What is serine proteases?Endo proteases come in several forms, including serine proteases. They are, nonetheless, quite common in both prokaryotes and eukaryotes. Protease A, a chymotrypsin-like protease from Stremptomyces griseus, has a primary sequence very different from chymotrypsin, but its overall tertiary structure is very similar to chymotrypsin.
The positions of the catalytic triad amino acids in the primary sequences of the protein are very similar, indicating that the genes for the proteins diverged from a common precursor gene. B. subtilisin, a serine protease, in contrast, Subtilis shares only a small amount of tertiary structural homology with chymotrypsin. But when folded, it also possesses a catalytic triad (Ser 221 - His 64 - Asp 32) akin to chymotrypsin's (Ser 195 - His 57 - Asp 102).
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Which of the electron transitions involves the most energy? Explain why this transition involves the most energy based in your understanding of the attractive forces between the electrons and protons in the atom
The attraction between the electron and the atom's nucleus grows stronger as it travels closer to it. The electron goes to a lower potential energy. The electron transition involves the most in n=6 and n=2.
More energy must be changed for a larger movement. The electric charge of the electron, a subatomic particle, is a negative one elementary charge. Due to their lack of known components or substructure, electrons, which are part of the first generation of the lepton particle family, are typically considered to bepotential energy.
The energy that an object retains due to its position in relation to other objects, internal stresses, electric charge, or other factors is known as potential energy in physics.
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hydrocarbons are compounds that contain only carbon and hydrogen. combustion of a sample of a particular hydrocarbon gave 5.86 g of co2 and 1.37 g of h2o. what is the empirical formula of the hydrocarbon?
the emperical formula of the hydrocarbons was CH
what is emperical formula?
The simplest whole number ratio of atoms contained in a substance is its empirical formula in chemistry. The empirical formula of sulphur monoxide, abbreviated SO, and disulfur dioxide, abbreviated S2O2, are two straightforward examples of this idea. As a result, the empirical formula for sulphur monoxide and disulfur dioxide, two compounds made of sulphur and oxygen, is the same. Their molecular formulae, which represent how many atoms are present in each molecule of a chemical compound, are different.
It's important to remember that you're dealing with a hydrocarbon in this situation, which is a chemical made up solely of carbon and hydrogen.
As you can see, the byproducts of this combustion reaction are carbon dioxide, CO2, and water, H2O.
As a result, all the carbon that was formerly a component of the hydrocarbon will now be a component of the carbon dioxide. Similar to how all of the hydrogen that originally made up the hydrocarbon is now a component of the water.
This means that you can calculate the initial amounts of carbon and hydrogen in the hydrocarbon by counting the moles of water and carbon dioxide, respectively.
So, for water you have
1.37g x 1mole H2o/18.015 =0.076moles H2o
and for carbon dioxide
5.86g x 1 mole CO2/44.01g=0.133 moles CO2
Now, you know that every mole of water contains 2 moles of hydrogen and 1 mole of oxygen, which means that the reaction produced
0.076moles H2O x 2 moles H1/mole H2O=0.152 moles H
SInce every mole of carbon dioxide contains 1 mole of carbon and 2 moles of oxygen, it follows that the reaction also produced
0.133moles CO2 x 1 mole C/1mole CO2=0.133 moles C
Finally, to find the mole ratio that exists between carbon and hydrogen in the hydrocarbon, divide these values by the smallest one
For C: 0.133moles/0.133moles=1
For H: 0.152moles0.133moles=1.14≈1
The empirical formula of the hydrocarbon will thus be
C1H1⇒CH
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when 100 cm3 of 1.0 moldm-3 hcl is mixed with 100 cm3 of 1.0 moldm-3 naoh, the temperature of the resulting solution increases by 5.0 c what will be the temperature change
Temperature remains the same as the amount of heat and the concentration remains the same..
When 100cm3 of 1.0 mol dm-3 hcl is mixed with 100 cm3 of 1.0 mol dm-3 of NaOH the temperature remains the same. Here, the volume of the solution gets half .mass and heat released reduced by half.so, temperature remains the same as the concentration of the solution does not change.concentration of the solution is the amount of solute present in the given solution.
So, the temperature remains the same as 5C.We know this from calculating heat exchange using specific heat capacities.This process explains when two or more substances at different temperature are brought together to the environment they eventually reach the same temperature.
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difference between volume and time.
Answer:
Volume is defined as the space occupied within the boundaries of an object in three-dimensional space. It is also known as the capacity of the object.
Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future.
a solution is prepared by diluting six times with the dilution factor of 1/5. if the final concentration of the serial dilution is 1.4x10-7 m, calculate the original concentration of the solution. (this is often used in biological sample analysis.)
The original concentration of the solution will be 2.1 × 10⁻³ m
What is dilution factor?Dilution factor is the ratio to dilute the stock solution. This can be expressed as the ratio of the volume of the final diluted solution to the initial volume removed from the stock solution.
Differs from dilution factor. Dilution ratio refers to a simple dilution ratio that combines a unit volume of solute with the desired volume of solvent. On the other hand, the dilution factor refers to the ratio between the volume of the initially concentrated solute and the volume of the final diluted solution. Which is DF = Vₙ / V₀
For the given question,
Vₙ = DF × V₀
Where, Vₙ = Final concentration of the serial dilution
V₀ = Original concentration of the solution
DF = Dilution factor
Since the solution is diluted 6 times then
Vₙ = 1/5⁶ × V₀
1.4x10⁻⁷ = V₀/15625
V₀ = 15625 × 1.4x10⁻⁷
V₀ = 2.1 × 10⁻³ m
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Order the sequence of ideas that led to the current model of the atom. Place a number in front of each event to show the correct order.
The correct sequence of ideas that led to the current model of the atom is as follows:
1. Dalton developed the theory that all matter is made of atoms.
2. Thomson discovered that atoms contain electrons.
3. Rutherford discovered that atoms have a nucleus.
4. Bohr developed the model in which electrons orbit the nucleus.
5. Schrödinger developed the electron cloud model of the atom.
What is an atom?An atom is the smallest unit of a chemical element that can take part in a chemical reaction.
The atomic theory of matter is the theory that all matter is composed of atoms.
Atoms are composed of electrons, protons, and neutrons.
Several scientists contributed ideas that led to the current model of the atom. These scientists include:
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Complete question:
Order the sequence of ideas that led to the current model of the atom. Place a number in front of each event to show the correct order.
Rutherford discovered that atoms have a nucleus.
Dalton developed the theory that all matter is made of atoms.
Schrödinger developed the electron cloud model of the atom.
Bohr developed the model in which electrons orbit the nucleus.
Thomson discovered that atoms contain electrons.
Which best explains how the chemical reaction shown below follows the law of conservation of mass? 2H2 + O2 → 2H2O
The given equation is showing the law of conservation of mass as the number of hydrogen and oxygen atoms are same on the both sides of the equation.
What is the chemical equation?A chemical equation can be described as the representation of a reaction in terms of chemical symbols of the substances. A chemical equation possesses of participating reactants in the reaction, formed products, and an arrow representing the direction of the chemical reaction.
The chemical equation in which the number of atoms of each element is equal on either side of the equation is called a balanced chemical equation.
The law of conservation of mass obeys by every balanced chemical equation. By following law of conservation, the total mass of the chemical elements on the reactant side should be equal to the total mass of chemical elements on the product side in a balanced chemical equation.
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3. using the 1h nmr spectrum shown below. a) confirm the identity of the compound using the nmr provided. is this consistent with acetophenone (starting material) or the benzoic acid (product)? b) using the table below list the 4 signals shown. include chemical shift in ppm, multiplicity and number of protons. for calculating the number of protons, use the integration curves provided in the nmr and a ruler. c) support your answer in a) using the data obtained from the nmr. explain using the peak(s), or absence of peak(s), that sustain the identity of the compound.
Since 2 2.60 PPM singlet was seen for the /C-CH, Proton, and IHNMR data clearly showed the presence of acetophenone. IHNMR chemical with a multiplicity of 2.60 PPM is singlet, and there are 3 photons in total.
IHNMR chemical with a multiplicity of multiple number of photons of 7.49 to 7.45 PPM and a Proton number of 1. acetophenone number of photons in an IHNMR chemical with a multiplicity of 7.60 - 7.55PPM is multilaterally 2. IHNMR Chemical of multiplicity 7:98 - 7.94 PPM is multiplet no. of Proton is 2. So, Acetophenone chemical will be administered. Only one at proton comparatively shielded opposition and miter will give multiple in the benzene ring according to the IHNMR value of one singlet observed at 2–6 1 PPM. OxfordCryosystems.
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how many moles of chloride ions can be found in a solution made from 1.25 moles of magnesium chloride?
2.5 moles of chloride ions can be found in a solution made from 1.25 moles of magnesium chloride.
Magnesium Chloride is an remedy used to save you and deal with low amounts of magnesium inside over the counter blood. Magnesium is crucial for over the counter everyday functioning of cells, muscle mass, bones, nerves, and over-the-counter heart. This medicine is to be had as an injectable solution and isn't always covered over-the-counter aid of Medicare.
Eye may reason mild eye irritation and skin can also motive skin inflammation. Ingestion causes gastrointestinal inflammation with nausea, vomiting and diarrhea. Inhalation may also motive breathing tract inflammation.
Magnesium chloride is likewise safe for guys, ladies, children, and throughout pregnancy. over the counter magnesium chloride can also help over-the-counter body process and soak up some over the counter critical mineral, calcium. Magnesium has also been shown to contribute to a healthy coronary heart, ordinary blood stress degrees, strong bones.
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270g of glucose no.of molecules
Next question: 40g of ammonium nitrate
Question 1. There are [tex]9.025*10^{23}[/tex] molecules in 270g of glucose.
Question 2. There are [tex]3.009*10^{23}[/tex] molecules in 40g of glucose.
Explanation:Question 1. 270g of glucose, no. of molecules.1. Find the chemical formula of glucose.Formula: [tex]C_{6} H_{12} O_{6}[/tex]
2. Find the molar mass of this compound.Using the molar mass of each element, which can be found in the periodic table, we make the following calculations:
Molar mass of C: 12.011 u
Total mass of C in compound: (12.011 * 6)= 72.066
Molar mass of H: 1.008 u
Total mass of H in compound: (1.008 * 12)= 12.096
Molar mass of O: 15.999 u
Total mass of O in compound: (15.999 * 6)= 95.994
Why did we multiply the molar mass of C, H and O by 6, 12, and 6? This is because the formula contains 6, 12, and 6 atoms of each element, respectively.
Add up all masses:
72.066 + 12.096 + 95.994= 180.156 g/mole
This result means that 1 mole of glucose has a mass of 180.156 grams.
3. Calculate the number of molecules.Furthermore, 1 mole of any compound has a total of [tex]6.022*10^{23}[/tex] molecules. To find the amount of molecules, find the amount of moles and then the amount of molecules. Do it in the following fashion:
180.156g -----> 1 mole
270g -----------> x
[tex]\frac{270*1}{180.156} =1.499[/tex]
270 grams of glucose is the equivalent of 1.499 moles of said compound.
Now, find the number of molecules using the amount of moles calculated previously.
180.156g ----> [tex]6.022*10^{23}[/tex]
270g ---------> x
[tex]\frac{(270*6.022*10^{23} )}{180.156} =9.025*10^{23}[/tex]
4. Conclusion.There are [tex]9.025*10^{23}[/tex] molecules in 270g of glucose.
Question 2. 40g of ammonium nitrate, no. of molecules.Repeat the same process explained previously:[tex]NH_{4} NO_{3}[/tex]
N: 14.007 u
N: 14.007 u
O: (15.999 * 3)= 47.997 u
14.007 + 4.032 + 14.007 + 47.997= 80.043 g/mole
80.043g ----> [tex]6.022*10^{23}[/tex]
40g -----------> x
[tex]x=\frac{(40*6.022*10^{23}) }{80.043} =3.009*10^{23}[/tex]
There are [tex]3.009*10^{23}[/tex] molecules in 40g of glucose.
what is math and science?
Mathematics and science are formal and exact sciences that are based on logic.
What is math and science?Mathematics is an exact science that studies the properties and relationships between entities through geometric figures and arithmetic with numbers. Mathematics then looks for common patterns that could end up leading to a theory and, if it is verifiable and true, end up being a law, such as the Pythagorean law for example.
In terms of science, it is the comparable knowledge that has been studied, explained, and has helped predict social and natural phenomena in our universe over time. This has been done and verified through the scientific method, making it then a verifiable and true logic.
Therefore, we can confirm that mathematics and science are formal and exact sciences that are based on logic.
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a nucleoside triphosphate containing a 5 carbon deoxyribose sugar and the nitrogenous base thymine would be called:
A nucleoside triphosphate containing a 5-carbon deoxyribose sugar and the nitrogenous base thymine would be called a thymidine monophosphate.
Nucleotides are comprised of three components: a nitrogenous base, a pentose sugar, and one or more phosphate groups. Each of these elements is referred to as an "n" (nucleotide), so when we combine them all together, we get nucleotides like dATP and dTTP.
Thymidine is the name of the parent nucleotide from which derivative nucleotides are made. Thymidine monophosphate contains thymine and a phosphate group, which makes it different from other nucleotides. In this case, it has one phosphate group attached to its 5-carbon deoxyribose sugar, which is also called deoxyribonucleic acid (DNA).
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why do you add 20% naoh to your hexane diamine (aqueous phase) ? group of answer choices to pull a proton off of the amine. to make the reaction turn colors. to neutralize the hcl formed. to hydrolyze the acid chloride.
When we add 20% NaOH to our hexane diamine which is in aqueous phase, Option C. nylon to neutralize the HCl formed.
The NaOH reacts with the HCl to shape salt and water. This prevents the HCl from inflicting facet reactions, along with the viable addition of HCl to a C=C if one is gift inside the molecule.
The response of adipoyl chloride with 1,6-hexanediamine to shape Nylon 6,6 is used on this test. Nylon 6,6 is consequently a copolymer made by the chemical mixture of specific monomers.The two answers aren't miscible so the reaction can most effective occur on the interface.
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play with the simulation to determine: a) which particles affect the stability of the atom? b) which particles do not affect the stability of the atom?
a) Neutrons or protons are the particles that have an impact on the stability of the atom.
b) Electrons are the particles that have no impact on the stability of the atom.
When an element's atoms have excess neutrons or protons, the extra energy produced in the nucleus causes the atom to lose its equilibrium or become unstable.
Whether or not an atom's outermost shell is filled with electrons determines how stable the atom is. The molecule is stable if the outer layer is full. To attain stability, vacant outer shell atoms often form chemical interactions with other atoms.
Radioactivity is the capacity of some unstable atoms to spontaneously release nuclear radiation, often in the form of alpha and beta particles associated with gamma rays. The nucleus of an atom might become unstable if there are too many neutrons or protons present.
By ejecting other particles, such as neutrons and protons, or by emitting radiation in a variety of ways, a radioactive atom will attempt to become stable. Thus, the atom's electrons are the only internal particle that has no impact on the atom's stability.
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calculate the value of the maximum velocity for an enzyme-catalyzed reaction that follows michaelis-menton kinetics if the initial velocity is 6 mm/s at a substrate concentration of 6 mm. the km for the enzyme system is 2 mm. a) 4.5 mm b) 8 mm c) 8.75 mm d) 12 mm e) 66 mm
The value of the maximum velocity for an enzyme-catalyzed reaction that follows Michalis Menton kinetics if the initial velocity is 6 mm/s at a substrate concentration of 6 mm. the correct option is (C).
The km for the enzyme system is 2 mm is 8mm. The Michalis-Menten equation is commonly used to study the kinetics of reaction catalysis by enzymes as well as the kinetics of transport by transporters. Typically, the rate of reaction (or reaction velocity) is experimentally measured at several substrate concentration values.
A plot of the reaction rate versus the substrate concentration reveals two important kinetic parameters: Vmax and Km .
Vmax is the maximum reaction rate that is observed at saturating substrate concentrations.
Km is referred to as the Michalis constant and is the substrate concentration at which the reaction rate is exactly half of Vmax.
Km is inversely related to the apparent affinity of the enzyme/transporter for its substrate. Therefore, a low numerical value of Km refers to a very high affinity of interaction between the protein and its substrate.
The Michaelis-Menton equation can be written as -
V = Vmax [S] / (Km + [S])
V is the reaction velocity (rate of reaction progression per unit time)
Vmax is the maximum velocity of the reaction.
[S] is the substrate concentration.
Km is the Michaelis constant.
Here V = 6mm/s
Vmax =?
[S] = 6mm
Km = 2mm
putting into equation,
V = Vmax [S] / (Km + [S])
6 = Vmax [6] / (2 + [6])
6 = Vmax [6] / 8
48/6 = Vmax
Vmax = 8mm
The value of the maximum velocity for an enzyme-catalyzed reaction that follows Michaelis Menton kinetics is 8mm.
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examine the given beer's law standard curve for an unknown dye measured in a 1.0 cm cuvette. what is the concentration (in m) of a sample of the unknown dye with an absorbance of 0.32 at 542 nm?
Concentration of unknown sample with an absorbance of 0.32 at 542 nm is 2.22 × 10^-5 M.
What is Beer's law ?
Beer's Law is an equation that connects a material's characteristics to light attenuation. According to the law, a chemical's concentration and a solution's absorbance are exactly related. Using a colorimeter or spectrophotometer, the relation can be used to calculate the concentration of a chemical species in a solution. The UV-visible absorption spectroscopy is where the connection is most frequently applied. Be aware that at high solution concentrations, Beer's Law is invalid . Beer's law suggest that absorbance and concentration of a sample at a particular wavelength varies linearly. Now the best fit line equation for unknown sample is given as , y = 15200x - 0.018 where y is absorbance and x is concentration of sample . At an absorbance of 0.32 , put y = 0.32 in given equation we get the concentration .
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which confirmatory test will be used for iron (iii) , and which one for nickel (ii)? why was this reagent chosen? should the solution be acidic or basic for this test?
A confirmatory test for iron(iii) is Potassium Ferrocyanide.
The addition of potassium thiocyanate to Fe3+ produces a reddish-brown color due to the formation of this complex. The formation of the reddish-brown color confirms the presence of Fe3+.
The solution should be acidic for this test
A confirmatory test for nickel(ii) is dimethylglyoxime reagent (DMG).
Adding 2 or 3 drops of dimethylglyoxime reagent (DMG) to nickel(ii) will produce a rose-red precipitate of Ni(DMG)2 should form.
The solution should be basic for this test.
What is the confirmatory test for Fe3+?
Fe3+ forms a complex with thiocyanate, SCN−. The addition of potassium thiocyanate to Fe3+ produces a reddish-brown color due to the formation of this complex. The formation of the reddish-brown color confirms the presence of Fe3+.
What is the confirmatory test for Ni2+?
Add dimethylglyoxime(DMG) to the nickel ion solution. Next, add a little bit of ammonia to make the solution basic. It will give a red precipitate. This confirms the presence of Ni2+.
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in your own opinion, is alchemy a real science? do you believe the claims? give reasons and explanation to support your answers.
Alchemy was a form of speculative thought that, among other aims, tried to transform base metals such as lead or copper into silver or gold. It also sought to discover cures for diseases and a way of extending life.
Today we know that the universe is made up of atoms and elements. Since lead and other metals are not composed of fire, air, earth, and water, it's not possible to adjust the percentages of those elements and turn them into gold.
(Unfortunately, it turns out that alchemy, at least in its purest form, can’t be done. You can’t turn any metal into gold, no matter how much sorcery or chemicals or mystical charms you use. )
I hope I helped
one calorie (cal) is the amount of heat needed to (fill in the blank) the temperature of one gram of water one degree celsius.
Answer:
Raise
Explanation:
One calorie (cal) is the amount of heat needed to raise the temperature of one gram of water one degree Celsius.
3 straight chains of 12 carbon atoms are shown. 2 oxygen atoms are at the end of each row and connect the carbon atoms to a row of 3 carbon atoms. each carbon atom is attached to hydrogen atoms. which type of lipid is shown? a saturated phospholipid a saturated triglyceride an unsaturated phospholipid an unsaturated triglyceride
Three straight chains containing 12 carbon atoms, 2 oxygen atoms at the end is a saturated triglyceride.
What are saturated triglycerides?
Saturated triglycerides contain entirely of carbon-carbon single bonds in the structure. They have higher melting point compared to unsaturated triglycerides. Consuming saturated triglycerides in the large amount may lead to several cardiovascular diseases. Foods with high concentration of saturated triglycerides are butter, some fatty meats and cheese.
The saturated triglycerides are made up of carbon-carbon single bonds containing maximum number of hydrogen atoms. Unlike, saturated fats, unsaturated fats have carbon-carbon double bonds in them.
Therefore, 3 straight chains containing 12 carbon atoms, 2 oxygen atoms at the end is a saturated triglyceride.
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assume that coal can be represented by the chemical formula c135h96o9ns . if 2.00 tons of coal is burned, what mass of nitrogen in the form of nox gases, is produced by this combustion?
If 2.00 tons of coal is burned, then the mass of nitrogen in the form of nox gases, is produced by this combustion is 400134 g of nitrogen.
The chemical reaction equation can be written as
C135H96O9NS + 156O2 ------- 135CO2 + 48H2O + NO + SO2
Mass of 2.0 tons of coal in gram = 1.814 × 10^(6) g
Molar mass of C135H96O9NS can be calculated as = 135(12) + 96(1) + 14 + 32 = 1904 moles of coal
Now, number of moles of coal burned = 1.814 × 10^(6) g / (1906 g/mol) = 952.7 moles of coal
If 1 mole of coal produced 1 mole of NO
Total 952.7 moles of coal produced 952.7 moles of NO
Mass of NO can be calculated as
Mass of NO produced = 952.7 × 30 = 28581 g
1 mole of NO = 30 g of NO
Thus, 14 g of nitrogen is contained in 30 g of NO
Let xg of nitrogen is contained in 28581 g of NO
Then,
x = 14 × 28581 = 400134 g of nitrogen.
If 2.00 tons of coal is burned, then the mass of nitrogen in the form of nox gases, is produced by this combustion is 400134 g of nitrogen.
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what are the procedure in removing carbon (iv) oxide from hair
Answer:
There are two primary hair removal methods with electrolysis: galvanic and thermolytic. Galvanic hair removal chemically destroys the hair follicle. Thermolytic removal uses heat to destroy the follicle.
Explanation:
A typical Heliox mixture contains He at a partial pressure of 0.75 atm and O2 at a partial pressure of 0.35 atm. What is the total pressure of the Heliox mixture?
Considering the Dalton's partial pressure, the the total pressure of the Heliox mixture is 1.1 atm.
Dalton's partial pressureDalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:
[tex]P_{T}[/tex]= P₁ +P₂ + ... + Pₙ
where n is the amount of gases present in the mixture.
This relationship is due to the assumption that there are no attractive forces between the gases.
Total pressure of the Heliox mixtureIn this case, the total pressure of the Heliox mixture is calculated as:
[tex]P_{T} =P_{He} +P_{O_{2} }[/tex]
Being:
[tex]P_{He}[/tex]= 0.75 atm[tex]P_{O_{2} }[/tex]= 0.35 atmthe total pressure of the Heliox mixture is
[tex]P_{T}[/tex]= 0.75 atm + 0.35 atm
[tex]P_{T}[/tex]= 1.1 atm
Finally, the total pressure is 1.1 atm.
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A sample of a compound is decomposed to produce 165g carbon, 27.8g hydrogen
and 220.2g oxygen. Determine the empirical formula for the compound?
HI !!
Answer:
The empirical formula is CH2O
Explanation:
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which one of the following salts, when dissolved in water, produces the solution with the lowest ph? a) alcl3 b) nacl c) mgcl2 d) nh4cl
AlCl3 is the answer.
As strong acid-strong base salts, NaCl and MgCl2 are both neutral.
Since NH4Cl is a weak base-strong acid salt, it is also acidic. AlCl3 is, nevertheless, a stronger acid than NH4Cl.
Neither acids nor bases can be found in neutral substances. Accordingly, neutral substances have an equal number of these ions. An acid has hydrogen ions, a base has hydroxyl ions, etc. Water is the most typical example of a neutral substance. Both acidic and basic properties are absent from water.
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