Question

The mass of one mole of a substance is always fixed.
(A) False (असत्य)
(B)True (सत्य)​

Answer 1

Explanation:

The mass of one mole of a substance is equal to that substance's molecular weight. For example, the mean molecular weight of water is 18.015 atomic mass units (amu), so one mole of water weight 18.015 grams.

Answer 2

yes mass of one mole of a substanceis always fixed..

so, its true