Question

Calculate the molecular mass of the following in u.

a. NH3​

Answer 1

Answer:

• Given that: ${\sf{NH_3}}$

~ Firstly let us see what are the atomic mass of the given elements!

→ The atomic mass of N = 14 u

→ The atomic mass of H = 1u

~ According to the question,

→ The atomic mass of N = 14u

→ The atomic mass of ${\sf{H_3}}$ = 1u × 3 = 3u

Explanation:

The molecular mass of any substance is the sum of the atomic masses of all the atoms in the molecule of the substance!

→ Molecular mass = 14u + 3u

→ Molecular mass = 17u $\:$