Question

1) what volume at STP will be occupied by 0.4 grams Sulphur dioxide? S:32,O:16

2) what volume of carbon dioxide will be produced at STP by heating 3.1 gram of copper carbonate?(C=12,O=16,Cu=64)

3). how many moles of Nitrogen dioxide are present in 672 litres of it(N=14,O=16)

4) calculate the percentage of the element present in Ammonium Sulphate(H=1,N=14,C=16,S=32)

5). calculate the percentage gain of mass when anhydrous copper sulphate is dissolved in water and then recrystallized (H=1,C=16,S=32,Cu=64)

6) what is the percentage of oxygen in water(H=1,O=16)

7) calculate the percentage composition of the element present in Lead Nitrate(H=14,O=16,Pb=207)​

Answer 1

Answer:

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