MEDIUM
9th CBSE
IMPORTANT
Earn 100

Calculate the number of atoms in 16u of He.

Important Questions on Atoms and Molecules

MEDIUM
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 3 - Atoms and Molecules>TEST YOURSELF>Q 11
Calculate the number of atoms in 16 g of He.
HARD
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 3 - Atoms and Molecules>TEST YOURSELF>Q 11
Calculate the number of atoms in 16 moles of He.
EASY
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 3 - Atoms and Molecules>TEST YOURSELF>Q 12
Define: Atomic mass
EASY
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 3 - Atoms and Molecules>TEST YOURSELF>Q 12
Define: Gram atomic mass
EASY
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 3 - Atoms and Molecules>TEST YOURSELF>Q 12
Define: Molecular mass
EASY
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 3 - Atoms and Molecules>TEST YOURSELF>Q 12
Define: Gram molecular mass
MEDIUM
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 3 - Atoms and Molecules>TEST YOURSELF>Q 13
The formula of radium bromide isRaBr2. Write the formulae of the following compounds.
(i) Radium Sulphite
(ii) Radium phosphate
(iii) Radium oxide     
 
MEDIUM
9th CBSE
IMPORTANT
Modern's abc+ of SCIENCE CHEMISTRY FOR Class IX>Chapter 3 - Atoms and Molecules>TEST YOURSELF>Q 14
Explain the term 'mole' and Avogadro's number. How are they related?