1)A sample of oxygen gas occupies 1.00 liter at 1.00 atmosphere (atm) of pressure. If the temperature remains constant, and the pressure on the oxygen gas is increased to 3.00 atmospheres, what is the new volume? 2)At STP, 0.280 L of a gas weighs 0.400 g. Calculate the molar mass of the gas

3)The density of a gas is 1.43 g/mole at STP. What is the gas?

4)A gas evolved during the fermentation of sugar was collected at 22.5°C and 702 mmHg. After purification its volume was found to be 25.0 L. How many moles of gas were collected?

5)Calculate the number of moles of CO2 in a 846 mL container at 76 oC and 3.5 atm