Ans 1.
2A + 3B(excess) → 4Y + 5Z
In the given reaction B is excess , so A is limiting reagent and it decide the mole of Z
The given reaction is practically going
2 mole of A producing mole of Z is = 5
therefore 1 mole of A producing mole of Z is = 5/2
Hence 3.10 mole of A producing mole of Z is = 5*3.10/2 = 7.75 mole
Thus 3.10 A give 7.75 mole of Z
Ans 2.
2AgNO3 + Na2CrO4 → 2NaNO3 + Ag2CrO4
From above reaction clear that 2 mole of AgNO3 is give 1 mole of Ag2CrO4
Or 2* 169.87 gmol-1 *mole of AgNO3 is give 1*331.73 gmol-1 *mole of Ag2CrO4
Note : I multiply with molar mass of compound
Or
339.74 g of AgNO3 is give Ag2CrO4 amount is = 331.73g
1 g of AgNO3 is give Ag2CrO4 amount is = 331.73g/339.74
29.3 g of AgNO3 is give Ag2CrO4 amount is = 331.73g* 29.3 /339.74 = 28.609 g
Thus 29.3 g of AgNO3 is give Ag2CrO4amount is = 28.609 g
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