What volume is occupied by 15.0 moles of carbon dioxide gas at standard temperature and pressure?

Q. 0.2g of a gas 'X' occupies a volume of 440 ml . If 0.1g of carbon dioxide occupies a volume of 320 ml at the same temperature & pressure . Gas 'X' would be (1) O_2 (2) SO_2 (3) NO (4) C_4H_{10

Q. molar volume is the volume occupied by 1 mol of any ideal gas at standard temperature and pressure. show that it is 22.4 liters

Q. $0.2g$ of gas $X$ occupies a volume of $440ml$ and $0.1g$ of carbon dioxide occupies $320ml$ at the same temperature and pressure. The gas $X$ could be:

Q. 0.2 gram of a gas X occupies a volume of 440 ml. If 0.1 gram of carbon dioxide occupies a volume off 320 ml at the same temperature and pressure then gas X would be

Q. At constant temperature, a gas occupies 11.2 liters at 0.860 atm. What is the pressure if the volume becomes 15.0 L?