A sample of $O_{2}$ gas is collected over water at 23 $^{\circ}$ C at a barometric pressure of 751 mm Hg (vapour pressure of water at 23 $^{\circ}$ C is 21 mm Hg). The partial pressure of $O_{2}$ gas in the sample collected is____.

A sample of $O_{2}$ gas is collected over water at $23^{\circ}$ C at a barometric pressure of 751 mm Hg (vapour pressure of water at $23^{\circ}$ C is 21 mm Hg). The partial pressure of $O_{2}$ gas in the sample collected is ......

Q. Based on the information in each choice below, which of the noble gases would have the greatest density for a

1.00 L

sample at room temperature and pressure?

Join BYJU'S Learning Program

A sample of pure gas has a density of 1.60 gm/L at temperature of 26.50C and pressure of 680.2 mm Hg. Which of the following gases could the sample be?

The correct option is C CO2Density of a gas is given by:d=PMRT⇒M=dRTP=1.6×0.0821×299.5680.2760=44∴CO2 is the answer.Hence, the correct option is C

A sample of pure gas has a density of 1.60 gm/L at temperature of ${26.5}^{0} C$ and pressure of 680.2 mm Hg. Which of the following gases could the sample be?

The correct option is C $C O_{2}$
Density of a gas is given by:

$d = \frac{P M}{R T} \Rightarrow M = \frac{d R T}{P} = \frac{1.6 \times 0.0821 \times 299.5}{\frac{680.2}{760}} = 44$

$∴ C O_{2}$ is the answer.

Hence, the correct option is $C$