Question

Q1. Define :
a. Atomic mass
b. Atomic mass unit
c. Gram atomic mass
d. Molecular mass
e. Gram molecular mass.
Q2. What do you understand my the statement :
a. Atomic mass of Calcium is 40u
b. Molecular mass of water is 18u

Answer 1

Explanation:

1 - atomic mass - the mass of an atom of a particular chemical substance

2- atomic mass unit - a unit of mass used to express atomic and molecular weights, equal to one twelfth of the mass of an atom of carbon-12.

3- gram atomic mass- Gram atomic mass is the mass, in grams, of one mole of atoms in a monatomic chemical element. It is numerically equal to the relative atomic mass (or atomic weight) in grams.

4-molecular mass - The molecular mass is the mass of a given molecule: it is measured in daltons

5- gram molecular mass - Gram molecular mass is the mass in grams of one mole of a molecular substance. Gram molecular mass is the same as molar mass. ... Gram molecular mass may be reported in grams or grams per mole (g/mol).

Q2-1- a - atomic mass is 40 and atomic number of calcium is 20

2- atomic mass of water (H2O) is 18u