Answer:
Mass = 1080.26 g
Explanation:
Given data:
Number of moles of LaPO₄ = 4.56mol
Mass in gram = ?
Solution:
Formula:
Number of moles = mass/molar mass
Molar mass of LaPO₄ = 236.9 g/mol
by putting values,
4.56 mol = mass/ 236.9 g/mol
Mass = 4.56 mol × 236.9 g/mol
Mass = 1080.26 g
For the hydrolysis of methyl acetate express the rate of reaction in terms of different reactants and products
Answer:
See explanation
Explanation:
The equation of the reaction is;
CH3COOCH3 + H2O -------> CH3COOH + CH3OH
Now recall that the rate of reaction refers to the rate of disappearance of reactants or the rate of appearance of products. We indicate that reactants disappear by a negative sign placed in front of the concentration term of reactants.
Rate = k -d[CH3COOCH3]/dt
Rate = k d[CH3COOH]/dt
Rate = k d[CH3OH]/dt
Note; i did not write the rate in terms of water because it is a solvent that is present in large excess. Its concentration does not change with time.
pls help me with science
If a cake recipe requires 25g of sugar, how much sugar will the baked cake contain
An isotope of carbon has 6 protons and 8 neutrons. What is the atomic mass of this element?
6
O 12
O 12.011
O 14
Answer:
14
Explanation:
Atomic mass = protons + neutrons
6 + 8 = 14
Which reverses the flow of current through an electric motor?
A brush
B battery
C armature
D commutator
Answer:
D
Commutator is the answer
Explanation:
The commutator systematically converts the current direction between the rotor and the outer circuit. As the shaft revolves, the commutator converts the course of current in a winding. For a separate armature winding, when a cylinder has reached one-half perfect turn, the winding is now attached so that current passes through it in the reverse of the original direction.
Answer:
D. Commutator
Explanation:
I just took the quiz. credit to the person above me.
which of the following best describes a decomposition reaction?
a. two substances combine to form a single new substance
b.two substances recombine to form two new substances
c. one element takes place of another in a compound
d. a single substance breaks down
Answer:
d.
Explanation:
because its right :)
The statement among the following which best describes a decomposition reaction is a Single complex substance breaks down in to two or more simpler substances.Hence, Option (D) is correct.
What is Decomposition Reaction ?Chemical decomposition, or chemical breakdown, is the process or effect of simplifying a single chemical entity into two or more fragments.
Chemical decomposition is usually regarded and defined as the exact opposite of chemical synthesis.
Therefore, The statement among the following which best describes a decomposition reaction is a Single complex substance breaks down in to two or more simpler substances.Hence, Option (D) is correct.
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If you put a piece of zinc into a solution of copper (I) sulfate and allow the single replacement reaction to go to completion, how will you know which of the reactants is the limiting reactant? Write the balanced equation, including the states of matter of the reactants and products, to help support your answer.
Explanation:
Reaction of zinc metal in copper sulfate solution.
[tex]\begin{array}{ll}\text { Oxidation : } & \mathrm{Zn}(s) \rightarrow \mathrm{Zn}^{2+}(a q)+2 e^{-}\\\text {Reduction : } & \mathrm{Cu}^{2+}(a q)+2 e^{-} \rightarrow \mathrm{Cu}(s) \\\hline \text { Full Reaction : } & \mathrm{Zn}(s)+\mathrm{Cu}^{2+}(a q) \rightarrow \mathrm{Zn}^{2+}(a q)+\mathrm{Cu}(s)\end{array}[/tex]
Zinc is listed above copper on the activity series, this means that zinc is more easily oxidized than copper. That is why copper(II) ions can act as an oxidizing agent when put into contact with zinc metal. Ions of any metal that is below zinc, such as lead or silver, would oxidize the zinc in a similar reaction.
A template of a Venn diagram representing common and differentiating characteristics of covalent and ionic bonds is shown.
Which of the following characteristics can be written only in space B?
Occurs in substances that have at least one non-metal
Occurs in substances that have a repeating lattice structure
Occurs in substances that have discrete molecular structure
Occurs in substances that have high melting points
Ionic and covalent bonds can occur in substances that have a repeating lattice structure.
Ionic and covalent bondsIonic bonds are formed when an atom donates electron (s) to another atom. Covalent bonds, on the other hand, are formed when two atoms share electrons to complete their octet states.
Ionic compounds are formed from a combination of metal and non-metal atoms. They usually have crystalline lattice structures with high melting points.
Covalent compounds are formed between non-metal atoms. They can also have lattice structures but generally have lower melting points because the forces holding the molecules together are weaker.
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Answer:
Occurs in substances that have a repeating lattice structure
Explanation:
Evaluate the carbon dioxide molecule. Explain how to determine if double or triple bonds exist in the molecule.
Answer:
It contain double Bond.
Explanation:
To determine weather the bond is double or triple simply check the electron involved in mutual sharing of an electron if 2 electron takes parts it said to be double or if 3 it said to be triple.
what is dark matter
can we travel faster than speed of light
what is chlorophyll
Answer:
Explaining dark matter and black holes
Here are six big questions about our universe that current physics can’t answer:
What is dark energy, the mysterious energy that appears to be accelerating the expansion of the universe?
What is dark matter, the invisible substance we can only detect by its gravitational effect on stars and galaxies?
What caused inflation, the blindingly fast expansion of the universe immediately after the Big Bang?
For that matter, what caused the Big Bang?
Are there many possible Big Bangs or universes?
Is there a telltale characteristic associated with the death of a universe?
Despite the efforts of some of the world’s brightest brains, the Standard Model of particle physics – our current best theory of how the universe works at a fundamental level – has no solution to these stumpers.
A compelling new theory claims to solve all six in a single sweep. The answer, according to a paper published in European Physical Journal C by Herb Fried from Brown University and Yves Gabellini from INLN-Université de Nice, may be a kind of particle called a tachyon.
Tachyons are hypothetical particles that travel faster than light. According to Einstein’s special theory of relativity – and according to experiment so far – in our ‘real’ world, particles can never travel faster than light. Which is just as well: if they did, our ideas about cause and effect would be thrown out the window, because it would be possible to see an effect manifest before its cause.
Alt
Explanation:
Due to travelling faster than light, dark matter has a higher than usual mass in relation to its resting mass, thus accounting for the large 'missing' mass around galaxies. ... Dark matter is therefore non-baryonic, travelling faster than light and has a mass half that of a photon...
bts army forever.....vzgGgzs0
.......JK
.....justin bieber
Oil and water placed in a jar will separate. Even when shaken and mixed, the oil still separates from the water.
Which best describes oil and water?
Oil and water are highly soluble because they have separate chemical properties.
Oil and water have a low solubility because they have separate chemical properties.
Oil and water are highly soluble because they exert different pressures.
Oil and water have a low solubility because they exert different pressures.
Answer:
Probably B?
Explanation:
I don't have one...
Hope it helps I guess..
Answer: i think is B
Explanation: HATE ME IF IM WRONG
Will give brainliest
What type of bond is formed between atoms of a molecule of the product of this reaction? How can you determine which type of bond is formed between these atoms?
2 H2(g) + O2(g)⇒ 2 H2O(l)
Answer:
Explanation:
A decomposition reaction occurs when one reactant breaks down into two or more products. This can be represented by the general equation: AB → A + B. Examples of decomposition reactions include the breakdown of hydrogen peroxide to water and oxygen, and the breakdown of water to hydrogen and oxygen.
Answer:
Covalent bond
Explanation: Hydrogen and Oxygen are both non-metals, with a low difference in electronegativity. They will share electrons.
A. 207 kJ
B. 4730 kJ
C. 9460 kJ
D. 414 kJ
Answer:
Q = 9460 Kj
Explanation:
Given data:
Mass of copper = 2kg
Latent heat of vaporization = 4730 Kj/Kg
Energy required to vaporize 2kg copper = ?
Solution:
Equation
Q= mLvap
It is given that heat required to vaporize the one kilogram copper is 4730 Kj thus, for 2 kg
by putting values,
Q= 2kg × 4730 Kj/Kg
Q = 9460 Kj
(20 POINTS!!) please help me write a short reference page on chemical bonds (anything helps)
•differentiate the characteristics of ionic and covalent bonds
•summarize the steps and rules for naming IONIC and COVALENT bonds
•describe the role an elements charge has in writing and naming bonds
- how do roman numerals change the process of naming ionic compounds
have a good day :)
Explanation:An ionic bond essentially donates an electron to the other atom participating in the bond, while electrons in a covalent bond are shared equally between the atoms. The only pure covalent bonds occur between identical atoms. ... Ionic bonds form between a metal and a nonmetal. Covalent bonds form between two nonmetals.
How do Ionic bods form in binary compounds?
Answer:
Ionic bonding is the complete transfer of valence electron(s) between atoms and is a type of chemical bond that generates two oppositely charged ions. By losing those electrons, these metals can achieve noble-gas configuration and satisfy the octet rule. ...
Explanation:
ygyjhu went to the store and bumped into afghsiugshjkds
Answer:
well dont hurt yourself
Explanation:
its not very good to
what mineral is least important to plant growth
a. Nitrogen
b. Phosphorus
c. Potassium
d. Sodium
Answer:
sodium
Explanation:
nitrogem, phosphorous and potassium are very important to plant growth, but sodium isnt necessary.
Answer:
the answer is sodium hope this helps
6.3 moles of water h20
Answer:
6.3 moles of water = 6.3*18=113.4 grams per mole
Explanation:
What do electric conducts and thermal conducts have in comman?
Usually electrical conductors have loosely bound electrons. Materials that conduct heat are thermal conductors
The number of waves that pass a given point in a certain amount of
time is the waves...
Answer:
100
Explanation:
nsvcscjkvschssvds
I HAVE 5 minutes HELP!!
Which organelle accurately completes the chart?
O lysosome
O cell wall
O vacuole
O endoplasmic reticulum
Answer:
endoplasmic reticulum
Explanation:
Endoplasmic reticulum will complete the chart. The Endoplasmic reticulum is one type of organelle that is present in eukaryotic cells. They form a network that is interconnected with membrane-enclosed sacs or structures that are tube shaped and are called cisternae.
which metal can be obtain from calvertie ores?
Answer:
Ore
hope this helps
thanks for the points
PLEASE HELP
The area in which you live has a particular climate. It also has weather. Which claim describes the difference between climate and weather?
Group of answer choices
Weather is determined by temperature and precipitation, whereas climate is determined only by humidity, air pressure, and wind conditions.
Climate is the condition of Earth’s atmosphere at a particular time and place, whereas weather is the characteristic climate in an area over a long period of time.
Climate is determined by temperature and precipitation, whereas weather is determined only by humidity, air pressure, and wind conditions.
Weather is the condition of Earth’s atmosphere at a particular time and place, whereas climate is the characteristic weather in an area over a long period of time.
Answer:
Weather is the condition of Earth’s atmosphere at a particular time and place, whereas climate is the characteristic weather in an area over a long period of time.
Explanation:
Weather and climate are two very important conditions that describes the atmospheric overview of a place.
Weather is reported over a short period of time, it is the condition of the atmosphere at a particular time and place.
Climate is reported over a long period of term. The average weather condition of a place over a long period of time is the climate.
The most important control over the climate of a place is the temperature and amount of precipitation it receives over a period of time. Weather conditions is reported using more diverse factors such a temperature, pressure, humidity, precipitation, etc.HELP ASAP!!! Which two energy transformations are shown in the photo? A. Chemical energy → electromagnetic energy B. Chemical energy → thermal energy C. Thermal energy → electrical energy D. Thermal energy → chemical energy
Answer:
Chemical energy _ thermal energy
if hydrochloride tablets and eno combine what will the reaction
answer is attached in the image below
Answer:
Hydrochloric Acid
Explanation:
Calculate normality and tire of KOH solution , if CN H2 C2 O4 solution , that is nessesary for titration is 0.1050 mol/1 and the Volume is 5.0 ml ; the volume of KOH - solution is 4.5 ml
Answer:
Normality of KOH = 0.1062 N
Note: The given question is not clearly stated. A related question below is answered and explained;
What is the NORMALITY of a solution of KOH if 45.18 mL are required to neutralize 0.3g of pure oxalic acid H2C2O4 . 2H2O?
Explanation:
Equation of the reaction: 2KOH + H₂C₂O₄.2H₂O --> K₂C₂O₄ + 4H₂O
molar mass 0f KOH = 56 g/mol; molar mass of H₂C₂O₄.2H₂O = 126 g/mol
Number of moles of in 0.3 g of H₂C₂O₄.2H₂O = mass/molar mass
number of moles = 0.3 g / 126 g/mol = 0.0024 moles
From the equation of reaction, 2 moles of KOH are required to neutralize 1 mole of H₂C₂O₄.2H₂O
Number of moles of KOH required to neutralize 0.0024 moles of H₂C₂O₄.2H₂O = 2 * 0.0024 = 0.0048 moles
Molar concentration of 45.18 mL solution of KOH containing 0.0048 moles of KOH = number of moles/volume (L)
molarity of KOH solution = (0.0048/45.18 mL) * (1000 mL/1 L) = 0.1062 mol/L
Normality = n * molarity
where is the number of moles of OH⁻ ions produces from mole of KOH = 1
Normality of KOH = 1 * 0.1062
Normality of KOH = 0.1062 N
Hi can anyone answer these two distance and time questions
The length of a year is equivalent to the time it takes for one.. (pls help I honestly forgot )
What are the reactants in a chemical equation located? (20 Points)
A. On the right side of the arrow
B. Below the arrow
C. Above the arrow
D. On the left side of the arrow
on the left side of the arrow
The reactants in the chemical equation located on the left side of the arrow. Option D is correct.
The arrow in the chemical equation represents the direction of the chemical reaction, and it separates the reactants from the products.
A chemical equation is a symbolic representation of a chemical reaction, showing the starting materials (reactants) and the resulting substances (products). The general form of a chemical equation is as follows:
Reactants → Products
Reactants: The reactants are the substances present at the beginning of the chemical reaction. They are the starting materials that undergo a chemical change or reaction to produce new substances. Reactants were written on the left side of the arrow.
Arrow: The arrow in the chemical equation points from the reactants to the products, indicating the direction of the reaction. It symbolizes the transformation of reactants into products during the chemical reaction.
Products: The products are the substances formed as a result of the chemical reaction. They are the new compounds or elements that are produced by rearranging the atoms of the reactants. Products were written on right side of the arrow.
For example, let's consider the combustion of methane (CH₄) in oxygen (O₂) to produce carbon dioxide (CO₂) and water (H₂O):
CH₄ (methane) + 2 O₂ (oxygen) → CO₂ (carbon dioxide) + 2 H₂O (water)
In this chemical equation, methane (CH₄) and oxygen (O₂) are the reactants, and they are located on the left side of the arrow. The products, carbon dioxide (CO₂), and water (H₂O), are located on the right side of the arrow.
Hence, D. is the correct option.
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help is science, if you don't know the answer just don't put anything /:
Answer:
Light
Explanation:
Light is a good example of invisible particles. We cannot see light particles aka photon. We only know the light is present by the objects we see. Because we can only see objects when light reflects from them on our eyes.
[I could only think of one example if I can remember one more I'll edit it down]