Which compound is an electrolyte?
(1) C6H12O6 (3) CaCl2
(2) CH3OH (4) CCl4

Answers

Answer 1

Answer: I think the correct answer is option 3. CaCl2 is the compound that is an electrolyte when dissolved in water. An electrolyte is a substance that conducts electricity in solution. Calcium Chloride when in solution dissociates into ions which allows the flow of current in the solution.

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What three things happen in order for a chemical reaction to occur?

Answers

Three things that should happen for a chemical reaction to occure :
1. Position of electrons must change
2. Chemical bonds must be formed and broken between atoms and
3. No changes should happen to the nuclei

Fe2O3 + H2 --> Fe + H2OA) what mass of hydrogen gas must be consumed to produe 10.0 g of iron metal?

B) what mass of iron(lll) oxide, Fe2O3, must be consumed to prepare 2.50g of iron metal

Answers

A) 10.0g of Iron is $(10.0)/(55.8)=179mmol$ of Iron.

One mole of dihydrogen is required to form one mole of iron, hence you'll need $0.179*1.00=0.179g$ of dihydrogen.

B) Likewise : 2.50g of Iron is $(2.50)/(55.8)=44.8mmol$ of Iron, hence we'll need $44.8*(3*16+2*55.8)=7.15g$ of Fe2O3.

Which two statements are true for both compounds and mixtures?A. Their particles are held together by chemical bonds.

B. They are made up of more than one type of atom.

O C. They can be separated into two or more elements.

O D. Their particles all have the same chemical formula.

Answers

Answer:

B and C

Explanation:

A. Their particles are held together by chemical bonds.

This option is incorrect for both compounds and mixtures. It is only true for Compounds.

B. They are made up of more than one type of atom.

This is correct. Both compounds and mixtures consists of different atoms of elements.

C. They can be separated into two or more elements.

This option is correct. Compounds are broken down into elements through chemical means.

D. Their particles all have the same chemical formula.

This is wrong. Mixtures do not have chemical formula

Answer:a and c

Explanation:

apex

Which statement explains why water is classifiedas a compound?
(1) Water can be broken down by chemical means.
(2) Water is a liquid at room temperature.
(3) Water has a heat of fusion of 334 J/g.
(4) Water is a poor conductor of electricity.

Answers

Answer: Option (1) is the correct answer.

Explanation:

Compounds are the substances which contain two or more different elements.

Similarly, water is a compound as it is made up when two hydrogen atoms combine with one oxygen atom. Compounds can be broken down with the help of chemical reactions.

Hence, the statement water can be broken down by chemical means explains why water is classified as a compound.

I believe the correct answer from the choices listed above is option 1. Water is classified as a compound because it can be broken down by chemical means. This process is called electrolysis where the products are H2 and O2. Hope this answers the question. Have a nice day.

How many moles of h2o would be produced from 1.75 moles of o2 with unlimited c3h6

Answers

1.75 (moles O2) × 6 (moles H2O) ÷ 9 (moles O2) = 1.17 (moles H2O)

You have to convert moles of O2 into moles of H2O so it's the number of moles you start with (1.75 O2) × the number of moles from the element you want (6 H20), then ÷ by the number of moles that the element that you already have (9 O2).

if you are finding the value of a 10 g piece of metal that has a value of 5 dollars/ 1 gram what would be my final unit