Question Text
Question 2 :
The number of moles in $12.044\times10^{23}$ number of He atoms are-
Question 3 :
The number of particles in 0.1 mole of carbon atoms are-
Question 4 :
If one mole of carbon atoms weighs 12 grams, what is the mass of 1 atom of carbon?
Question 13 :
Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?
Question 15 :
Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)?
Question 18 :
The smallest particles beyond which further division will not be possible are called-
Question 21 :
When 3.0 g of carbon is burnt in 8.00 g oxygen, 11.00 g of carbon dioxide is produced. What mass of carbon dioxide will be formed when 3.00 g of carbon is burnt in 50.00 g of oxygen?
Question 30 :
What is the number of aluminium ions present in 0.051 g of aluminium oxide?
