Question

what is the mass of 0.5 mole of water ( Atomic mass of hydrogen = 1 u, oxygen = 16 u.

Answer 1

the mass of 0.5 mole of water is 9u

Answer 2

Answer:

9u

Explanation:

Water = $H_{2}O$

= 1(2)+16

=18

Using the formula:

No. of moles = $\frac{Given Mass}{Molar Mass}$

= 0.5 = $\frac{x}{18}$

So,

x = 0.5 × 18

x = 9

Hence, your answer is 9u