Question

How many moles are present in 36 gm of  water?

  1. 1
  2. 2
  3. 4
  4. 8
Answer (Detailed Solution Below)
Option b: 2

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The correct answer is 2

Number of moles = Amount of substance (in grams)Molecular mass of substance

No. of moles = 3618 = 2 mole

[molecular mass of water(H2O) is= 2x1+16= 18 grams]

So, 2 moles are present in 36 grams of water.

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