Which of the following correctly represents 360 g of water?

i. 2 moles of H2O


ii. 20 moles of water


iii. 6.022 x 1023 molecules of water


iv. 1.2044 x 1025 molecules of water

20 moles of water:


Given: Number of moles = 20


Atomic mass of H2O = 2×1 + 16 = 18g/mol


To find out the mass of water, apply the formula given:



⇒


⇒ Mass = 20 mol × 18g/mol


⇒ Mass = 360 g


1.2044 x 1025 molecules of water:


1 mole = 6.022 × 1023



⇒ 20 moles


Mass of 20moles of water is 360g.


Thus, option D is correct.

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