Question

Find the number of moles present in a 75 gram sample of Mg(OH)2-

Answer 1

Answer: 1.286 mol. Mg(OH)2

Step-by-step explanation:

Find the molar mass of the compound by adding up the atomic masses.

Molar mass of Mg(OH)2: 58.3197 g/mol

Conversion:

Mass (grams) <--Molar Mass--> Moles

Calculate:

75g/1 times 1 mol/58.3197 g/mol

=75/58.3197

=1.286 mol. Mg(OH)2

Hope this helps!