What are the molar masses of K, Br2, and KBr

Answer 1

Hi, Vania! If you look on the periodic table, there should be a number located right below the elements you're looking for. This is the mass of one mole of the element. For potassium, this should be very straightforward. For Br2, multiply the molar mass of bromine by 2. For KBr, add the molar mass of potassium with the molar mass of bromine.