What is the total number of sulfur atoms in Mg2(SO4)3

At stp, what is the volume of 1 mole of co2?

You open a can of soda at room temperature and hear a hiss. which of the following factors has changed inside the container? a.) atmospheric pressure b.) temperature of gas c.) type of gas d.) amount of gas

How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?