If 10-4dm3 of water is introduced into a 1.0 dm3 flask at 300 K, how many moles of water are in the vapour phase when equilibrium is established? (Given, vapour pressure of H2O at 300 K is 3170 Pa, R = 8.314 JK-1 mol-1.

# If ${10}^{-4}{\mathrm{dm}}^{3}$ of water is introduced into a 1.0 ${\mathrm{dm}}^{3}$ flask at 300 K, how many moles of water are in the vapour phase when equilibrium is established? (Given, vapour pressure of ${\mathrm{H}}_{2}\mathrm{O}$ at 300 K is 3170 Pa, R = 8.314 .

1. A

2. B

3. C

4. D

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