Hydrogen and oxygen combine in the ratio of 1 : 8 by mass to from water.

Q.2 Hydrogen and oxygen combine in the ratio of 1 : 8 by mass to from water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?

Atoms and molecules class 9 intext solution playlist
Atoms and molecules class 9 ncert int...

Atoms and molecules class 9 Ncert exercise playlist
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Atoms and molecules intext solution video
P.no 32
Q.1 In a reaction 5.3g of sodium carbonat...

P.no 33
Q.2 Hydrogen and oxygen combine in the ra...
Q.3 Which postulate of Dalton's atomic th...
Q.4 Which postulate of Dalton's atomic th...

P.no 35
Q.1 Define the atomic mass unit | Atoms a...

P.no 39
Q.1 Write down the formulae of: Sodium ox...
Q.2 Write down the names of compounds rep...
Q.3 What is meant by the term chemical fo...
Q.4 How many atoms are present in a: (i) ...

Page no.40
Q.1 Calculate the molecular masses of H2,...
Q.2 Calculate the formula unit masses of ...

Page no.42
Q.1 If one mole of carbon atoms weights 1...
Q.2 Which has more number of atoms 100 gr...

Atoms and molecules ncert solution video
Q.1 A 0.24g sample of compound of oxygen ...
Q.2 When 3.0g of carbon is burnt in 8.00 ...
Q.3 What are polyatomic ions? Give examples.
Q.4 Write the chemical formulae of the fo...
Q.5 Give the names of the elements presen...
Q.6 Calculate the molar masses of the fol...
Q.7 What is the mass of 1 mole of nitroge...
Q.8 Convert into mole. (a) 12 g of oxyge...
Q.9 What is the mass of: (a) 0.2 mole of...
Q.10 Calculate the number of molecules of ...
Q.11 Calculate the number of aluminium ion...

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