MEDIUM
9th CBSE
IMPORTANT
Earn 100

What is the mass in gram of 4 moles of nitrogen atom?

Important Questions on Atoms and Molecules

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 7
Calculate the number of iron atoms in a piece of iron weighing 8.4 g.
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 8
Which of the following contains a greater number of atoms: a. 60 g Fe b. 60 g Al?( Atomic mass of Fe=56 u, atomic mass of Al=26.9 u)
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 9

Calculate the mass in gram of one atom of carbon.

HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 10
How many grams of neon has the same number of atoms as 8 g of calcium?
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 11
The mass of 1 atom of an element A is 5.3×10-23g. What is its atomic mass? Give the symbol of this element.
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 12
Calculate the number of molecules present in a drop of trichloromethane (CHCI3) weighing 0.0239 g.
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 13
Calculate the mass in gram of 0.4 mole of water.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 3 - Atoms and Molecules>CHECK YOUR PROGRESS>Q 14
How many moles of calcium carbonate are present in 20 g of the substance?