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  2. Convert into mole. (b) 20 g of water
# NCERT

Q 8.     Convert into mole. 

     (b)     20 g of water 

Answers (1)
P Pankaj Sanodiya

Given, Mass of water = 20 g

The Molecular mass of the water  = 2 * Mass of Hydrogen + Mass of Oxygen

                                                      = 2 * 1 + 16

                                                      =  18 g.

Now, Number of moles :

=\frac{given\:mass}{molar\:mass}=\frac{20}{18}=1.11\:moles

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