Q7 of 24 Page 97

What is meant by molar mass?

Molar mass is the mass of one mole of any substance. One mole of any species (atoms, molecules, ions or particles) is that quantity in number having a mass equal to its atomic or molecules mass in grams.

Molar mass is represented by “M”



We can write,


Molar mass (M) = mass (m) × Number of moles(n)


More from this chapter

All 24 →
5

What is meant by the valency of an element?

 6

What helps in determining the formula of an ionic compound?

 8

What is meant by the law of conservation of mass? If 12 g of C is burnt in the presence of O2, how much CO2 will be formed?

[Atomic mass of C = 12 u, O = 16 u]


 9

Calculate the formula mass of CuSO4.5H2O.

[Atomic mass of Cu = 63.5 u, S = 32 u, O = 16 u, H = 1 u]