Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 33

EASY

9th CBSE

IMPORTANT

Earn 100

How many moles of oxygen atoms are present in one mole of the aluminium oxide, ${Al}_{2} O_{3}$ ?

Important Questions on Atoms and Molecules

EASY

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 33

How many moles of oxygen atoms are present in one mole of the carbon dioxide,

({CO}_{2})

?

EASY

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 33

How many moles of oxygen atoms are present in one mole of

{Cl}_{2} O_{7}

?

EASY

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 33

How many moles of oxygen atoms are present in one mole of the

H_{2} {SO}_{4}

?

EASY

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 33

How many moles of oxygen atoms are present in one mole of the

{Al}_{2} {({SO}_{4})}_{3}

?

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 34

Define gram molecular mass of a substance. How much is the gram molecular mass of oxygen?

HARD

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 34

If sulphur exists as

S_{8}

molecules, calculate the number of moles in

100

g of sulphur.

(S = 32 u)

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 35

What is meant by the 'molar mass' of a substance? State the unit in which molar mass is usually expressed.

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 35

Calculate the molar mass of the ozone molecule

O_{3}

. Write the results with proper unit.