How many total atoms are present in one formula unit of Al_2(CO_3)_3?

What is the mass, in grams, of 8.50 × 10^{22} molecules of NH_3?

What is the mass of 1.20 × 10^{24} atoms of potassium (K)? (Atomic mass of K = 39.1 g/mol)

What is the total mass in grams of 0.75 mole of SO_2?

What is the total mass in grams of 0.75 moles of SO_2?

Benzene has the chemical formula C_6H_6. If you have 24.0 grams of benzene, how many grams of hydrogen are present in this sample?

What is the molar mass of Al_2(CO_3)_3?

What is the molar mass of copper (Cu)?