Question

Which of the following correctly represents 360 g of water ?
(i) 2 moles of H2O
(ii) 20 moles of water
(iii) 6.022 Ã 1023 molecules of water
(iv)1.2044 Ã 1025 molecules of water
(a) (i)
(b) (i) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)

Answer 1

Answer:

I don't know but dicuss me

Answer 2

The Answer is Option (ii) and (iv)

Explanation:

(ii) 1 mole of water = Molar Mass of Water = 18g

Thus, 20 moles of water = $18g \times 20 = 360g$

(iv) 1 mole of water = $6.022 \times 10^2^3$ molecules of water = 18g of water

Thus, $1.2044 \times 10^2^5$ molecules of water = $\frac {18 \times 1.2044 \times 10^2^5}{6.022 \times 10^2^3}$

= 360g