This page explains how to calculate the amount of a substance needed for a solution based on its molar mass, using carbon dioxide and calcium nitrate as examples. It highlights the relationship betwee...This page explains how to calculate the amount of a substance needed for a solution based on its molar mass, using carbon dioxide and calcium nitrate as examples. It highlights the relationship between moles and grams and underscores the importance of molar mass for accurate measurements in solution preparation. The page also includes review questions to help reinforce understanding of molar mass and its calculations.