One kg of saturated steam at $100$C and $1\mathrm{.}01325$ bar is contained in a rigid walled vessel. It lias a volume of $1\mathrm{.}673$ m$3.$ It cools to $98$C; the saturation pressure is $0\mathrm{.}943$ bar ; one kg of water vapour under these conditions has a volume of $1\mathrm{.}789$ m$3.$ The amount of water vapour condensed $($in kg$)$ is

$0$

$0\mathrm{.}065$

$0\mathrm{.}1$

$1$