Question

calculate the no of moles present in 60gm of calcium. [calcium = 40 atomic mass unit

Answer 1

moles =given mass/molar mass
=60/40
=3/2 =1.5 moles

Answer 2

Given mass = 60gm

Atomic mass = 40 gm

No.of moles = given mass / atomic mass

= 60 / 40

= 3/2

= 1.5