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1) how many g h2O are present in 0.25 mol of it? a.4.5 b.18 c.0.25 d.5.4


mahekmujawar00 10th Oct, 2020
Answer (1)
Tapas Kumar Singh 10th Oct, 2020

Hello dear student


1 mole of water weighs = the molecular mass of water.

thus the amount of present in 0.25 mole of it is 4.5 grams

So ans a. 4.5 gm


or


mass of water - 0.25 mol


We know molecular mass of water ( M) = 18

No. Of grams ( W)  ?

No. Of moles = W/M

W= No of moles × M

W =  0.25 × 18

W= 4.5 gm


hope that's helpful


best of luck

1 Comment
Comments (1)
12th Oct, 2020
thanks 😊
Reply

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