Having trouble not every good at this

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Which of the following units is not an official si unit? mole liter kilogram ampere

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).