Question

How many g of H2O
are present in 0.25
mol of it?
b. 18
d. 5.4
a. 4.5
c. 0.25​

Answer 1

Explanation:

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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

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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

Answer 2

1 mole of H2O = 18g

0.25 mole = 0.25 * 18

= 4.5 g

Hope it will help you and please Mark me Brainilist