Question

convert into mole 20 g of water​

Answer 1

Answer:

mass of water = 20g

molar mass of water = 18g/mol

number of moles of water = given mass / molar mass of water

                                   = 20g / 18g/mol

                                  =  10/9 mol

                                   = 1.11mol

Explanation:

Answer 2

Answer:

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

                                                     = 2 * 1 + 16

                                                     =  18 g.

Now, Number of moles :

given mass/molar mass = 20/18 = 1.11 moles

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