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A 16-g sample of methane, CH4, is combined with a 16-g sample of molecular oxygen, O2, in a sealed container. Upon ignition, what is the maximum mass of carbon dioxide, CO2, that can be formed?
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Added Mon, 03 Aug '15
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number of moles of methane= mass/molar mass
=16/16=1 mol

number of moles of O2= mass/molar mass
=16/32=0.5 mol

clearly O2 is limiting reagent

2 moles of O2 gives 1 mol of CO2

SO, amount of CO2 formes = 0.5/2 =0.25 mol

mass= number of mol * molar mass of CO2
= 0.25 * 44
= 11 gm

Ans:
value =11
units = gm
Edit
Added Mon, 03 Aug '15
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