Calculate the number of moles of magnesium oxide, MgO in
i. 80 g and ii. 10 g of the compound.
(Average atomic masses of Mg = 24 and O = 16 )

Calculate the number of moles of magnesium oxide, MgO in 80 g of the compound. (Average atomic masses of Mg =24 and O =16)

Calculate the number of moles of magnesium oxide, MgO in 10 g of the compound. (Average atomic masses of Mg =24 and O =16)

Calculate the number of moles in the following: Mass of 3.5 g of hydrogen

Calculate the number of moles in the following: Mole of 3.2 times 10^(24) atoms of calcium

Calculate the number of atoms in 39.4 g gold.Molar mass of gold is 197 g / mole

Calculate the number of atoms of C,H and O in 72.5 g isopropanol, C_3 H_7 OH (molar mass 60).

Calculate the mass of sulfur dioxide produced by burning 16 g of sulphur in excess of oxygen in contact process. (Average atomic mass : S=32 u, O =16 u)

Calculate number of atoms is each of the following. (Average atomic mass : N = 14 u, S = 32 u) a. 0.4 mole of nitrogen b. 1.6 g of sulfur