Secondary Chemistry>Chapter 3 - Atoms and Molecules>Numerical On Mole And Its Role>Q 9

HARD

9th CBSE

IMPORTANT

Earn 100

What is the number of $H_{2} O$ molecules in 1 drop of water which weighs 0.06g?

Important Questions on Atoms and Molecules

HARD

9th CBSE

IMPORTANT

Secondary Chemistry>Chapter 3 - Atoms and Molecules>Numerical On Mole And Its Role>Q 10

The molar mass of O atoms is 16g/mol. What is the mass of oxygen atom?

HARD

9th CBSE

IMPORTANT

Secondary Chemistry>Chapter 3 - Atoms and Molecules>Numerical On Mole And Its Role>Q 11

The amount of 4.4g substance X is reported to be 0.1 mol. What is its molar mass.

HARD

9th CBSE

IMPORTANT

Secondary Chemistry>Chapter 3 - Atoms and Molecules>Numerical On Mole And Its Role>Q 12

What mass of oxygen will contain 2 moles of

O_{2}

molecules? Molar mass of

O_{2}

= 32g/mol.

HARD

9th CBSE

IMPORTANT

Secondary Chemistry>Chapter 3 - Atoms and Molecules>Numerical On Mole And Its Role>Q 13

Calculate the number of molecules in 1.195g of chloroform $({CHCl}_{3})$ .

Atomic masses. $H = 1 u, C = 12 u, Cl = 35.5 u$

HARD

9th CBSE

IMPORTANT

Secondary Chemistry>Chapter 3 - Atoms and Molecules>Numerical On Mole And Its Role>Q 14

Calculate the mass of one billion molecules of water. M

(H_{2} O)

= 18g/mol.

HARD

9th CBSE

IMPORTANT

Secondary Chemistry>Chapter 3 - Atoms and Molecules>Numerical On Mole And Its Role>Q 15

Calculate the amount of moles in 6g of carbon.

HARD

9th CBSE

IMPORTANT

Secondary Chemistry>Chapter 3 - Atoms and Molecules>Numerical On Mole And Its Role>Q 15

Calculate the amount of moles in 9.9g of

H_{2} O

.

HARD

9th CBSE

IMPORTANT

Secondary Chemistry>Chapter 3 - Atoms and Molecules>Numerical On Mole And Its Role>Q 15

Calculate the amount of moles in 9.8g

H_{2} {SO}_{4}

.