3 years ago

As Matter Changes States of matter does chemical composition stay the same or not

1 answer:

6 0

Whether water is frozen, in a gaseous state, or is a liquid, it is still H2O. So the chemical composition does stay the same.

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igor_vitrenko [27]

The answer is

e o i and a

not really sure forgive me if im wrong

7 0

2 years ago

Propane (c3h8) is burned in oxygen to produce carbon dioxide and water. the heat of combustion of propane is -2012 kj/mole. how

Olegator [25]

$C_{3} H_{8} + 5 O_{2} ---\ \textgreater \ 3CO_{2} +4H_{2}O (-2012 \frac{kJ}{mol} )


3 mol 10 mol


C_{3}H_{8} is /excess /reactant

because 3 mol propane require 15 mol oxygen (by reaction)

5 mol oxygen ---1 mol propane, so

10 mol oxygen ---2 mol propane

Only 2 mole propane will be burned,

so 

2012 ( kJ/mol)*2 mol =4024 KJ heat will be given off

Correct answer is number 4.


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2 years ago

The changing of a substance from a liquid into a vapor or gas is called

sergejj [24]

Answer: Boiling and Evaporation: Evaporation is the change of a substance from a liquid to a gas. Boiling is the change of a liquid to a vapor, or gas, throughout the liquid.

Explanation: Boiling and Evaporation: Evaporation is the change of a substance from a liquid to a gas. Boiling is the change of a liquid to a vapor, or gas, throughout the liquid.

6 0

10 months ago

What is a polar functional group?

earnstyle [38]

I think this is the answer

7 0

2 years ago

Write a balanced equation for the reaction of chlorine gas with fluorine gas. express your answer as a chemical equation. identi

postnew [5]

The balanced equation for reaction of chlorine gas with fluorine gas is written as follows

Cl2(g) + 3 F2(g) = 2ClF3(g)

chlorine react with flourine to form CIF3 . The phases of reactant and product is the gas phase

6 0

3 years ago

Read 2 more answers