How many grams are in 5 mol CaCO3?

The molar mass of CaCO3 (calcium carbonate) is approximately 100.09 g/mol.

To find the number of grams in 5 moles of CaCO3, you would multiply the molar mass by the number of moles:
5 mol CaCO3 x 100.09 g/mol = 500.45 grams

Therefore, there are 500.45 grams in 5 moles of CaCO3.