Calculate the amount of substance c a) 16 g of sulfur b) 24 g of oxygen c) 49 g of sulfuric acid

Calculate the amount of substance c a) 16 g of sulfur b) 24 g of oxygen c) 49 g of sulfuric acid d) 500 g of calcium carbonate e) 10 kg of water

n-amount of substance,
m is the mass (in g),
Mr is the molar mass of the substance.
by the formula: n = m / Mr. calculate:
a) n (S) = 16g / 32 (g / mol) = 0.5 mol
b) n (O2) = 24g / (2 * 16) (g / mol) = 24g / 32g / mol = 0.75 mol
c) n (H₂SO₄) = 49g / 98 (g / mol) = 0.5 mol
d) n (CaCO3) = 500g / 100 (g / mol) = 5mol
e) n (H2O) = 10000g / 33 (g / mol) = 303mol
e) and if there is still a typo and 10 g, and not 10 kg, then
n (H2O) = 10g / 33 (g / mol) = 0.3 mol