Chemistry

[blujay]

10cm^3 of CO is mixed and sparked with 100cm^3 of air containing 21% of O2. If all the volumes are measured at s.t.p.,?
a) write a balanced equation for the reaction
b) calculate the:
i) volume of oxygen present in the air
ii) volume of gas unused and name the gas
iii) the volume of CO2 produced
iv) volume of residual gases.?

[theprof]

Unfortunately, we are not in the business of providing comprehensive answers to questions like this on The Answerbank. You'll learn nothing by being provided with the answers and there's no way we can show you the calculations involved on this forum.

I suggest you refer to your course notes and look for something called Gay-Lussac's Law of Combining Volumes etc but you'll need that balanced equation first.

[Karolina82]

As "theprof" says, you won't learn by being provided with the answers. Here are a few hints:
Carbon monoxide burns in air producing carbon dioxide.
Is there sufficient oxygen for complete combustion?
The reaction products will be hot so what is the significance of measuring the gas volumes at stp?
What gases make up air?
Write yourself a balanced chemical equation for the combustion.
How many moles are on the left and right hand sides of the equation?
What volume of gas is on the left and right hand sides of the equation?
Are there any gases which haven't taken part in the reaction ?