Katerina is going to perform a reaction between Hydrochloric Acid (HCl) and solid Zinc. She needs to use 5 mols of HCl, how many grams of HCl should she use?

182.3 g

Explanation:

number of mols of HCl = 5 mols

molecular weight of HCl = 36.46 g/mol

m = mass of HCl = number of mols x molecular weight

m = 5 mols * 36.46 g/mol

m = 182.3 g

yes the answer is total mass in unchanged   : )