1. Find out the molar mass of a gas, if 3.94g of the gas occupied a volume of 3.52L at STP.
2. The combination reaction between hydrogen with oxygen generates tremendous amount of heat. Depict a reaction profile for the reaction and explain whether it is exothermic or endothermic.
3. State the simplest formula for a compound containing 0.080 mole Ba, 0.0800 mole S, 0.320 mole O.