Plzz help
How many moles of H2O can be made from the complete reaction of 5.5 moles of C3H8? (Only enter the number, NO UNITS, and round to the tenth place, 1 decimal) Given: C3H8 + 5 O2 → 3 CO2. + 4 H2O
Answer:
22
Explanation:
5.5 mol C3H8 • (4 mol H2O / 1 mol C3H8 ) = 22 mol H2O
9. During which phase of Mitosis does the Cell start to get ready to divid
Prophase
O Metaphase
Anaphase
Telophase
Hello,
QUESTION)TelephaseDuring telophase, the cell, each pole of which inherits the same number of single chromosomes, begins to divide into 2: this is cytodieresis.
Field foresters are associated with which of the following types of forestry?
urban
national
international
private sector
Answer:
urban and private sector
Explanation:
Which of these is a pair of coordination isomers (aka ionization isomers)?
a. Na2[NiBr2Cl2] and K2[NiBr2Cl2]
b. [Ni(NH3)3Br]Cl and [Ni(NH3)3Cl]Br
c. [Ni(NH3)3(H2O)]SO4 and [Ni(NH3)2(H2O)2]SO4
Which of these pairs are linkage isomers??
a. [Pt(Cl)2(SCN)4]^4- and [Pt(Cl)2(NCS)4]^4-
b. [Pt(Cl)2(SCN)4]^4- and [Pt(Cl)4(SCN)2]^4-
c. K4[Pt(Cl)2(SCN)4] and Na4[Pt(Cl)2(SCN)4]
Answer: [tex][Ni(NH_3)_3Br]Cl[/tex] and [tex][Ni(NH_3)_3Cl]Br[/tex] are ionization isomers.
[tex][Pt(Cl)_2(SCN)_4]^{4-}[/tex] and [tex][Pt(Cl)_2(NCS)_4]^{4-}[/tex] are linkage isomers.
Explanation:
Ionization isomerism occur when a ligand that is bound to the metal center exchanges places with an anion or neutral molecule that was originally outside the coordination complex
Thus [tex][Ni(NH_3)_3Br]Cl[/tex] and [tex][Ni(NH_3)_3Cl]Br[/tex] are ionization isomers.
Linkage isomerism is the existence of coordination compounds that have the same composition differing with the connectivity of the metal to a ligand.
Thus [tex][Pt(Cl)_2(SCN)_4]^{4-}[/tex] and [tex][Pt(Cl)_2(NCS)_4]^{4-}[/tex] are linkage isomers.
Air in a closed cylinder is heated from 15°C to 36°C. If the initial pressure is 1000 torr, determine what is the final pressure? *
Answer:
1072 torr
Explanation:
To answer this problem we can use Gay-Lussac's law, which states:
P₁T₂=P₂T₁Now we convert the given temperatures into K:
T₁ = 15°C ⇒ 15+273.16 = 288.16 KT₂ = 36°C ⇒ 36+273.16 = 309.16 KWe input the data:
1000 torr * 309.16 K = P₂ * 288.16 KAnd solve for P₂:
P₂ = 1072 torrwhy the ph of glycine increases when 0.1 M NaOH is added dropwise
Answer:
The acid-base reaction produces glycine reduction, and hence the increase of glycine pH.
Explanation:
The glycine is an amino acid with the following chemical formula:
NH₂CH₂COOH
The COOH functional group is what gives the acid properties in the molecule.
Hence, when NaOH is added to glycine an acid-base reaction takes place in which COOH reacts with the NaOH added:
NH₂CH₂COOH + OH⁻ ⇄ NH₂CH₂COO⁻ + H₂O
The glycine concentration starts to shift to its ion form (NH₂CH₂COO⁻) because of the reaction with NaOH, that is why the pH glycine increases when NaOH is added.
Therefore, the acid-base reaction produces glycine reduction, and hence the increase of glycine pH.
I hope it helps you!
Air movement can affect how quickly evaporation occurs.
O True
O False
For each of the following acid-base reactions,
calculate the mass (in grams) of each acid necessary
to completely react with and neutralize 3.65 g of the
base.
Part A
HCl(aq) + NaOH(aq) → H2O(l) + NaCl(aq)
Part B
2 HNO3(aq) + Ca(OH)2(aq)
2 H2O(1) + C
Answer: A. 3.28 g of HCl
B. 6.30 g of [tex]HNO_3[/tex]
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]
[tex]\text{Moles of} NaOH=\frac{3.65g}{40g/mol}=0.09moles[/tex]
[tex]\text{Moles of} Ca(OH)_2=\frac{3.65g}{74g/mol}=0.05moles[/tex]
a) [tex]HCl(aq)+NaOH(aq)\rightarrow H_2O(l)+NaCl(aq)[/tex]
According to stoichiometry :
1 mole of [tex]NaOH[/tex] require = 1 mole of [tex]HCl[/tex]
Thus 0.09 moles of [tex]NaOH[/tex] will require=[tex]\frac{1}{1}\times 0.09=0.09moles[/tex] of [tex]HCl[/tex]
Mass of [tex]HCl=moles\times {\text {Molar mass}}=0.09moles\times 36.5g/mol=3.28g[/tex]
b) [tex]2HNO_3(aq)+Ca(OH)_2(aq)\rightarrow 2H_2O(l)+Ca(NO_3)_2(aq)[/tex]
According to stoichiometry :
1 mole of [tex]Ca(OH)_2[/tex] require = 2 moles of [tex]HNO_3[/tex]
Thus 0.05 moles of [tex]Ca(OH)_2[/tex] will require=[tex]\frac{2}{1}\times 0.05=0.1moles[/tex] of [tex]HNO_3[/tex]
Mass of [tex]HNO_3=moles\times {\text {Molar mass}}=0.1moles\times 63g/mol=6.3g[/tex]
What kinds of matter have thermal energy
Answer:
Thermal energy comes from heat sources that provide energy from it's temp.
Explanation:
Produced when a rise in temperature causes atoms and molecules to move faster and collide with each other. The energy that comes from the temperature of the heated substance is called thermal energy. 6 min, 47 sec Heat Energy.
(If this doesn't help let me know in the comments, I'll try to explain better :> )
Assignment
Explain why it is not advisable to wear
black silky cloth in the sun
Answer:
It is not water absorbant and also the colour black, due to it's dark nature makes the person wearing the cloth feel hot. Unlike cotton, silk is not at all water absorbant as it does not absord any sweat produced in the wearers body
what is the molarity of a solution with 130g of CoCl2 in 1/2 liter? (can you show the steps please)
Answer:
2M
Explanation:
M=mol/L
1. Find moles of CoCl2
mass of substance/molar mass = 130/129.833 = 1.001 mol
3. Substitute in molarity equation
M=(1.001/0.5)
M= around 2M
The molarity of a solution with 130g of CoCl2 in 1/2 liter is 2M
HOW TO CALCULATE MOLARITY:
The molarity of a solution can be calculated by dividing the number of moles of that substance by its volume:Molarity = no. of moles ÷ volumeFirst, we convert 130g of CoCl2 to moles as follows:Molar mass of CoCl2 = 129.84 g/molmoles = 130g ÷ 129.84g/molmoles of CoCl2 = 1molMolarity of CoCl2 solution = 1mol ÷ 0.5LMolarity of CoCl2 = 2MTherefore, the molarity of a solution with 130g of CoCl2 in 1/2 liter is 2M.
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A new substance with unique chemical and physical properties formed when two or more elements are chemically bonded during a physical reaction.
Answer:
A compound
Explanation:
Chemical compound can be regarded as any substance made up of identical molecules which consists atoms of two or more than two chemical elements. For example four hydrogen atoms bonds with a carbon atom to give methane molecule which is a compound. It should be noted that A compound is a new substance with unique chemical and physical properties formed when two or more elements are chemically bonded during a physical reaction.
NH3(g) + O2(g) + CH4(g) → HCN(aq) + H20(l)
Answer:
2 NH3(g) + 3 O2(g) + 2 CH4(g) = 2 HCN(aq) + 6 H2O(l)
Explanation:
Reaction stoichiometry Limiting reagent
Compound Coefficient Molar Mass Moles Weight
NH3(g) 2 17.03052
O2(g) 3 31.9988
CH4(g) 2 16.04246
HCN(aq) 2 27.02534
H2O(l) 6 18.01528
Instructions on balancing chemical equations:
Enter an equation of a chemical reaction and click 'Balance'. The answer will appear below
Always use the upper case for the first character in the element name and the lower case for the second character. Examples: Fe, Au, Co, Br, C, O, N, F. Compare: Co - cobalt and CO - carbon monoxide
To enter an electron into a chemical equation use {-} or e
To enter an ion specify charge after the compound in curly brackets: {+3} or {3+} or {3}.
Example: Fe{3+} + I{-} = Fe{2+} + I2
Substitute immutable groups in chemical compounds to avoid ambiguity.
For instance equation C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced,
but PhC2H5 + O2 = PhOH + CO2 + H2O will
Compound states [like (s) (aq) or (g)] are not required.
If you do not know what products are enter reagents only and click 'Balance'. In many cases a complete equation will be suggested.
Reaction stoichiometry could be computed for a balanced equation. Enter either the number of moles or weight for one of the compounds to compute the rest.
Limiting reagent can be computed for a balanced equation by entering the number of moles or weight for all reagents.
The given chemical equation is already balanced and does not require any further balancing.
The chemical equation NH₃(g) + O₂(g) + CH₄(g) → HCN(aq) + H₂O(l) is already balanced because the number of atoms of each element is the same on both sides of the equation.
On the left side of the equation, there is 1 nitrogen (N) atom in NH₃ and 1 nitrogen (N) atom in HCN.
On the right side of the equation, there are 3 hydrogen (H) atoms in NH₃, 2 hydrogen (H) atoms in HCN, and 2 hydrogen (H) atoms in H₂O.
There are 3 oxygen (O) atoms in O₂ on the left side of the equation and 1 oxygen (O) atom in H₂O on the right side of the equation.
Finally, there is 1 carbon (C) atom in CH₄ on the left side of the equation.
Since the number of atoms of each element is balanced on both sides of the equation, we can conclude that the given equation is already balanced and does not require any further adjustments or coefficients.
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The complete question is:
How can I balance NH₃(g) + O₂ (g) + CH₄ (g) -> HCN (aq) + H₂O (l)?
A student needs 7.6 liters of a 0.18 molar solution for an experiment. How many grams of solute does the student need if the molar mass of the solute is 22.71 g/mol? Round your answer to the nearest 0.01
Answer:
31.07 g
Explanation:
First we calculate how many moles of solute would there be in 7.6 liters of a 0.18 molar solution, using the definition of molarity:
molarity = moles / volume0.18 M = moles / 7.6 Lmoles = 1.368 molNow we calculate the mass of 1.368 moles of solute, using the given molar mass:
1.368 mol * 22.71 g/mol = 31.07 gHelp please it’s due in 3 minutes
Answer:
A
Explanation:
Both students are Pushing/Pulling towards the same direction meaning if enough force is applied the object will move into that direction
What makes an acid acidic? a) Number of protons in a molecule b) Temperature c) Chemical structure d) Phase
Answer:
C.
Explanation:
Chemical structure
How many K3PO4 are in the equation below after it is correctly balanced?
K3PO4 +
HCI -->
KCI +
H3PO4
Answer:
1 K3PO4 +3 HCI -->3 KCI +1 H3PO4
Explanation:
K3PO4- 1
How many atoms are present in one formula unit of barium acetate, Ba(C2H302)2?
Answer:
i think 15
Explanation:
Answer: About Barium Acetate
All metallic acetates are inorganic salts containing a metal cation and the acetate anion, a univalent (-1 charge) polyatomic ion composed of two carbon atoms ionically bound to three hydrogen and two oxygen atoms (Symbol: CH3COO) for a total formula weight of 59.05. Hopefully i helped
Explanation:
21.Total mass of reactants always equals the total mass of the products true or false
Answer:
True
Explanation:
because its the law of conservation of mass
Please help me, im studying for finals and i need an answer to this question! Will mark brainliest for the best answers!w
Answer:
the generation of electricity and other energy jointly, especially the utilization of the steam left over from electricity generation to produce heat.
I hope it helps!! Have a nice day
Answer:
Cogeneration r is the use of a heat engine or power station to generate electricity and useful heat at the same time.
7. Which substance produces sulfur dioxide when roasted in air?
A bauxite
B cryolite
C hematite
D zinc blende
B. cryolite substance produces sulfur dioxide when roasted in air.
Cryolite (Na3AlF6, sodium hexafluoroaluminate) is an uncommon mineral identified with the once-large deposit at Ivittuut on the west coast of Greenland, mined commercially until 1987.
Sulfur dioxide (SO2) is a gaseous air pollutant composed of sulfur and oxygen. SO2 forms when sulfur-containing fuel such as coal, oil, or diesel is burned. Sulfur dioxide also converts in the atmosphere to sulfates, a major part of fine particle pollution in the eastern U.S.
What is sulfur dioxide and why is it bad?Sulfur dioxide (SO2), a colorless, bad-smelling, toxic gas, is part of a larger group of chemicals referred to as sulfur oxides (SOx). These gases, especially SO2, are emitted by the burning of fossil fuels — coal, oil, and diesel — or other materials that contain sulfur.
What is sulfur dioxide used for?Although its chief uses are in the preparation of sulfuric acid, sulfur trioxide, and sulfites, sulfur dioxide also is used as a disinfectant, a refrigerant, a reducing agent, a bleach, and a food preservative, especially in dried fruits.
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Write a balanced net ionic equation for each of the following aqueous metathesis reactions. Classify each reaction as a neutralization, precipitation, or gas--forming reaction.
A. Hydrobromic acid and cesium hydroxide.
B. Sulfuric acid and sodium carbonate.
C. Cadmium chloride and sodium sulfide.
Answer:
See explanation
Explanation:
A. This is a neutralization reaction.
Molecular equation;
HBr(aq) + CsOH(aq) ---------> CsBr(aq) + H20(l)
Complete ionic equation;
H^+(aq) + Br^-(aq) + Cs^(aq) + OH^-(aq) --------> Cs^+(aq) + Br^- + H20(l)
Net ionic equation;
H^+(aq) + OH^-(aq) --------> H20(l)
B. This is a gas forming reaction;
H2SO4(aq) + Na2CO3(aq) ------->Na2SO4(aq) + H2O(l) + CO2(g)
Complete ionic equation;
2H^+(aq) + SO4^-(aq) + 2Na^+(aq) + CO3^2-(aq) ------->2Na^+(aq) + SO4^-(aq) + H2O(l) + CO2(g)
Net ionic equation;
2H^+(aq) + CO3^2-(aq) -------> + H2O(l) + CO2(g)
C. This a precipitation reaction
Molecular equation;
CdCl2(aq) + Na2S(aq) ------->CdS(s) + 2NaCl(aq)
Complete ionic equation;
Cd^2+(aq) + 2Cl^-(aq) + 2Na^+(aq) + S^2-(aq) ---------> CdS(s) + 2Na^+(aq) + 2Cl^-(aq)
Net ionic equation;
Cd^2+(aq) + S^2-(aq) ---------> CdS(s)
What does the fossil record tell us about the evolution of the hominin skull?
The face grew wider as hominins evolved
The face stuck out farther from the rest of the skull as hominins evolved
The part of the skull surrounding the brain grew larger as hominins evolved
The part of the skull surrounding the brain grew more pointed as hominins evolved
Answer:
The part of the skull surrounding the brain grew larger as hominins evolved
The skulls are all casts of the original fossils. By determining the skulls we can explore the characteristics which reflect the evolutionary relationships. The part of the skull surrounding the brain grew larger as hominins evolved. The correct option is C.
What is hominin evolution?Hominin evolution is characterized by two mains trends, transition to bipedality and increase in brain size. Fossil evidence shows that both trends had a major impact on the structure and function of the hominin skull.
Hominins or homo species are characterized by relatively and absolutely large brains, a modern skeleton, reduced tooth and jaw size and an involvement in cultural activities. Hominins have a larger cranial capacity and this is an indication of their brain size.
In addition, the contour of the hominin forehead eventually shifted from being angled to more vertical.
Thus the correct option is C.
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STEP 7: LEAD
Initial temperature of metal = 100
✓°C
Initial temperature of water = 22.6
✓ °C
Final temperature of both = 23.3
°C
Subtract to find the temperature
changes for the water and the metal.
AT (water) = 0.7 ✓ °C
AT (metal) = 76.7 ✓ °C
Answer:
answer is 76
Explanation:
pls mark me brainliest right
Answer:
0.7
76.7
this is for (LEAD) the last one
HELP I DON'T HAVE TIME LEFT
Answer:
mass
Explanation:
Answer:
C Mass
Explanation:
mass wont change when a force is put upon it.
Wine goes bad soon after opening because Ethanol (CH3CH2OH) dissolved in it reacts with oxygen (O2) gas to form water and Aqueous Acetic acid (CH3COOH) The main ingredient of vinegar. Calculate the moles of water produced by the reaction of 0.060 mol of oxygen
Answer:
[tex]0.060molH_2O[/tex]
Explanation:
Hello there!
In this case, since the chemical reaction between ethanol and oxygen to water and acetic acid is:
[tex]CH_3CH_2OH+O_2\rightarrow CH_3COOH+H_2O[/tex]
Thus, since there is a 1:1 mole ratio between oxygen and water, the produced moles of water are calculated down below:
[tex]0.060molO_2*\frac{1molH_2O}{1molO_2}=0.060molH_2O[/tex]
Best regards!
What is the phase label on CI?
A. aq
B.
C. e
D. g
E. s
Answer:
Pubic hair smells bad
Explanation:
What season is represented in the northern hemisphere? *
5 points
Captionless Image
A. Spring
B. Summer
C. Fall
D. Winter
Answer:
B. summer
Explanation:
The northern hemisphere experiences summer during the months of June, July, and August because it is tilted toward the sun and receives the most direct sunlight.
Calculate the number of moles in 42.15g of magnesium carbonate.
Answer:
0.5mol
Explanation:
Please mark as brainliest
iron (II) chloride + chlorine gas
iron (III) chloride
Answer:
Fe2Cl + Chlorine
Explanation:
Fe2Cl2