What else is produced during the combustion of of propane c3h8?

What overall charge must all compounds have

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?

What are the first three quantum numbers for the electrons located in subshell 2s?