Question

9(i)Calculate the molar mass of nitric acid(HNO3).(Atomic mass of H=1u,N=14u,O=16u)​

Answer 1

Molar mass of HNO3

= (At. Mass of H) + (At. Mass of N) + 3(At. Mass of O)

= 1 + 14 + 3(16)

= 63 amu _____________(Ans.)

Hope it helps.

Answer 2

Answer:

63 amu

(Atomic Mass units)

Explanation:

Atomic Mass of Hydrogen = 1

Atomic Mass of Nitrogen = 14

Atomic Mass of Oxygen = 16

1 Hydrogen atom

1 Nitrogen Atom

And 3 Oxygen Atoms which means 16*3 =48

Adding up the three Elements We get an answer of 63 Atomic Mass units

1(Atomic Mass of Hydrogen) + 1(Atomic Mass of Nitrogen) + 3(Atomic Mass of Oxygen)

= 1(1) + 1(14) + 3(16)

= 63 amu