Final answer:
To calculate the number of moles and volume in liters of each gas at STP, use the equations moles = mass (g) / molar mass (g/mol) and Liters = moles * 22.41 L/mol.
Step-by-step explanation:
The molar mass of each gas can be used to calculate the number of moles using the equation:
moles = mass (g) / molar mass (g/mol)
Then, we can convert moles to liters at STP using the equation:
Liters = moles * 22.41 L/mol
For example, to calculate the number of moles of CO2:
moles = 4g / 44.01 g/mol = 0.09 mol
Liters = 0.09 mol * 22.41 L/mol = 2.01 L
Using this method, the number of moles and volume in liters of each gas can be calculated.