1. calculate the mass of an atom of silver.(Ag=108u).

2. if the aluminium salt of anion X is  Al2X, what is the valency of X & what will be the formula of Magnesium salt of X?

3. find the percentage of composition of carbon, hydrogen & oxygen in glucose. (C6H12O6)

4. calculate  the percentage of water of crystallisation in washing soda having formula  Na2CO3.10H2O

5.  calculate the no. of moles present 1 drop of water having 0.05g weight.


 

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