Question

Mass of a given substance = Number of moles $\times$ gram molecular mass of the substance.

• A. True
• B. False

Answer 1

The correct option is A

True

This is the simple formula to calculate the mass of a substance when the number of moles is given.
For example:

If we have to calculate the mass (in g) of 0.7 moles of Sodium.
The gram molecular mass of Sodium is 23 = 1 mole
Therefore, mass of 0.7 moles = 0.7 X 23 = 16.1g