Question

What is the molar mass of Mn(ClO3)2? Explain how you calculated this value.

Answer 1

Mn- 1 x 55 = 55
Cl- 2 x 35 = 70
O- 6 x 16 = 96
= 221 g/mol

Answer 2

Molar mass is the mass of 1 mol of a compound

molar mass of a compound is the sum of the products of the molar masses of the individual elements by the number of atoms of the element

molar mass of Mn(ClO₃)₂ = molar mass of Mn + 2(molar mass of Cl + 3(molar mass of O))

Molar masses of the elements are

Mn - 55 g/mol

Cl - 35.5 g/mol

O - 16 g/mol

substituting the values

molar mass of Mn(ClO₃)₂ = 55 + 2 (35.5 + 3(16))

molar mass of Mn(ClO₃)₂ = 55 + 2 (35.5 + 48) = 55 + 2 (83.5) = 55 + 167 = 222

molar mass of Mn(ClO₃)₂ is 222 g/mol