What is the volume of 1.5 moles of chlorine gas (cl2) at standard temperature and pressure (stp)?

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?