LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 24

EASY

9th CBSE

IMPORTANT

Earn 100

Calculate the molar mass of phosphorus molecule $P_{4}$ $(P = 31)$ .

Important Questions on Atoms and Molecules

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 24

Calculate the molar mass of Hydrochloric acid.

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 24

Calculate the molar mass of nitric acid.

MEDIUM

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 25

Which has more number of atoms:
a. $100 g$ of sodium or
b. $100 g$ of iron?

Given: atomic mass of $Na = 23 u, Fe = 56 u$ .

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 26

Calculate the molecular mass of

H_{2} O

.

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 26

Calculate the molecular mass of

{CO}_{2}

.

MEDIUM

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 26

Calculate the molecular mass of

{CH}_{4}

.

HARD

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 27

Find the percentage composition of sodium sulphate (

{Na}_{2} {SO}_{4}

).

MEDIUM

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>Practice Questions>Q 28

Calculate the number of atoms in

52

moles of

Ar

.