Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 4

EASY

11th CBSE

IMPORTANT

Earn 100

Which of the following weighs most?
(i) $50$ g of iron (ii) $5$ g atoms of nitrogen (iii) $0.1$ g atom of silver (iv) $1$ × $10^{23}$ atoms of carbon

Important Questions on Some Basic Concepts of Chemistry

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 5

Calculate the number of molecules present in

22 g

of

{CO}_{2}

?

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 6

Calculate the mass of

{CO}_{2}

which contains the same number of molecules as are present in

40

g of oxygen.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 7

Calculate the mass of

{Na}_{2} {CO}_{3}

which will have same number of molecules as contains in

12.3

g of

{MgSO}_{4} . 7 H_{2} O

.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 8

Calculate the volume occupied by

10^{22}

molecules of a gas at

300 K

and

760 mm

pressure.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 9

Find the number of atoms of each type present in

3.42

grams of cane sugar (

C_{12} H_{22} O_{11}

).

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 10

Calculate the mass of

1

molecule of oxygen.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 10

Calculate the mass of molecules of ammonia.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 10

Calculate the volume occupied at

STP

by

16.0 g

of oxygen.