[IDOAE]

Calculate the mass in kg of CO2 produced from the complete combustion of methane at 27 degrees C and 100.5 kpa.  (Outline the colution to the problem only)

Can somebody help me please?  I don't know how to do this problem.
So far I only have the combustion which is CH4 + 2 O2 --> C02 + 2 H2O.

mw (CH4) = 12 + 4 = 16g/mol
mw (CO2) = 12 + 16 * 2 = 44g/mol.

1 Cal = the amount of heat needed to raise the temperature of 1g of H2O by 1 degrees C.

I don't know what to do after that.  I don't just want the answer, I want to know how to do it too.

[Borek]

If you don't know initial amount of methane, you can't solve th equestion.

What is kfa?

[IDOAE]

If you don't know initial amount of methane, you can't solve th equestion.

What is kfa?

Sorry, I ment to type "kpa."  The amount of methane is 100.5 kpa (kilopascal)

[Borek]

kpa is a pressure unit, not the amount.

[english]

From what it sounds like this is an ideal gas problem?  You have more than one unknown though.

It's either that or a simple stoichiometric problem.  Because you do not have an initial amount of CH4, as Borek pointed out, this approach doesn't follow.

[IDOAE]

Oops, i left out that the amount of methane .176 kg

[Borek]

So it is simple stoichiometry problem, with some excess information given to confuse you.

http://www.chembuddy.com/?left=balancing-stoichiometry&right=stoichiometric-calculations