One mole of H2O means:

i. 18 g of H2O


ii. 6.022 x 1023 molecules of H2O


iii. 180 g of H2O


iv. 1.8 of H2O


18 g of H2O:




Number of moles = 1


6.022 x 1023 molecules of H2O:


We now that 1 mole contains 6.022 x 1023 molecules.


Thus, option A is correct.

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