EASY
9th CBSE
IMPORTANT
Earn 100

How many moles of oxygen atoms are present in one mole of  Cl2O7?

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 H2SO4?
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 Al2SO43?
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 S8 molecules, calculate the number of moles in 100 g of sulphur. (S=32u)
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 O3. Write the results with proper unit. 
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 ethanoic acid CH3COOH. Write the results with proper unit. 
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Multiple Choice Questions (MCQs)>Q 36
Which of the following pair of elements represents a mole ratio of 1:1?