How many moles of O2 are needed to produce 50.0 moles of CO2?
2 C8H18 + 25 O2 --> 16 CO2 + 18 H20
a) 78.1 moles

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?

Give the orbital configuration of the phosphorus (p) atom.

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6