NEED HELP ASAP!! Question 12
Propane, C3Hg, is the fuel in barbecue tanks, Calculate the volume that 4.5 mol of propane occupies at STP.

The fertilizer ammonium sulfate, (NH4)2SO4, is prepared by the reaction of ammonia, NH3, with sulfuric acid: 2 NH3 (g) + H2SO4 (aq)  (NH4)2SO4 (aq)

How many moles of ammonium sulfate are produced if 1.50 moles of ammonia react completely at STP? The balanced equation indicates that 2 moles of NH3 react to produce 1 mole of (NH4)2SO4.

1.50 moles NH3 x 1 mol (NH4)2SO4 = 0.750 moles (NH4)2SO4

Explanation:

GasMolar Mass (g/mole)Density at STP (g/L)

N2, nitrogen gas28.0141.25

O2, oxygen gas31.9981.43

CH4, methane gas16.0430.714

CO2, carbon dioxide44.0091.96

Explanation:

I think this is what your asking. I added a little more.