Which of the following correctly represents 360 g of water?- 2 moles of H2O
- 20 moles of water
- 6.022 × 1023 molecules of water
- 1.2044 × 1025 molecules of water
(a) (i)
(b) (i) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
Correct Answer: (d) (ii) and (iv)
Explanation: Number of moles = Mass of water / Molar mass of water
Number of moles = 360g / 18 g/mol
Number of moles = 20
Number of molecules = 20 x 6.022 x 1023 = 1.2044 x 1025 molecules of water.
Hence, 20 moles of water and 1.2044×1025 molecules of water correctly represent 360 gms of water.
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