Question

Determine the mass, in grams, of 0.545 moles of Si (1 mol of Si has a mass of 28.09 g).

Answer 1

Moles = Mass ÷ Molar mass

Given that,

Moles= 0.545 mol

Molar mass= 28.09g

∴Mass = moles × Molar mass

Mass= 0.545 × 28.09 = 15.309g