Help on Chemistry Homework!?

Question

Ammonium nitrate is a common agricultural fertilizer, an ingredient in fireworks, and was one of the components of the bomb used in the terrorist attack on the federal building in Oklahoma City in 1995. How many liters of gas at 300° C and 1 atm are produced by the explosive decomposition of 12.0 kg ammonium nitrate to nitrogen gas, oxygen gas and water vapor.

Answer 1

First you need a balanced equation. I'll give you that.

2NH4NO3 == N2 + O2 + 4H2O

Now convert the 12.0 kg to moles (don't forget to first change to grams)

Now note that yu get 6 moles of gas for every 2 moles of NH4NOS, so the molar ratio is 3:1

Once you have moles of gas, multiply by 22.4 liters at STP. Finally adjust from STP to 300 C. using the gas laws.