How to calculate mass from given moles of a substance or compound?

How to calculate mass from given moles of a substance or compound? Practice questions/worksheet on mass to mole

Mole(n)= Mass of a substance(m)/ Molar mass(Mr)

so mass of a substance , m= nx Mr

The first question is solved for you.

For calculating Molar mass, you need to add the relative atomic masses of all the atoms in a 

compound or ion. For example Mr of Na₂O = (23x2)+16 = 62 ,

because  Ar( relative atomic mass) of Na=23,

Ar( relative atomic mass) of O= 16

so  mass of 1.5  moles of Na₂O= 1.5x62= 93 g

Calculate mass  in  1.5 moles of Na₂O

Calculate mass  in  2.5 moles of H₂O

 Calculate mass  in  3.5 moles of NaOH

Calculate mass  in  0.5 moles of MgO

 Calculate mass  in  4.5 moles of Mg(OH)₂

Calculate mass  in  0.5 moles of Li₂O

Calculate mass  in  2.5 moles of HCl

Calculate mass  in  6.5 moles of LiCl

Calculate mass  in  1.5 moles  of MgCl₂

Calculate mass  in  5.5 moles of P₄O₁₀

Calculate mass  in  0.5 moles of H₃PO₄

Calculate mass  in  7.5 moles of Cl₂O₇

Calculate mass  in  1.15 moles of HClO₄

Calculate mass  in  1.25 moles of SO₂

Calculate mass  in  1.35 moles of H₂SO₃

Calculate mass  in  1.45 moles of SiO₂

Calculate mass  in  1.55 moles of Al₂O₃

Calculate mass  in  10.5 moles of H₂SO₄

Calculate mass  in  12.5 moles of Al₂(SO₄)₃

Calculate mass  in  1.35 moles of CO

Calculate mass  in  1.25 moles of NO

 Calculate mass  in  1.45 moles of CO₂

Calculate mass  in  1.55 moles of N₂

Calculate mass  in  1.55 moles of 𝐶𝐻₄

Calculate mass  in  1.25 moles  of 𝑂₂

Calculate mass  in  1.5 moles  of 𝐶₆𝐻₁₂𝑂₆

Calculate mass  in  1.58 moles  of 𝑆𝑂𝐶𝑙₂

 Calculate mass  in  1.50 moles  of 𝐹𝑒𝐶𝑙_3.