Question

C. How many moles of gas are in a container with a volume of 9.55 mL at 35 °C and a pressure of 895 mmHg?

Answer 1

Answer: There are $4.45\times 10^{-4}moles$ of gas are in a container with a volume of 9.55 mL at 35 °C and a pressure of 895 mmHg

Explanation:

According to ideal gas equation:

$PV=nRT$

P = pressure of gas = 895 mm Hg= 1.18 atm  (760 mm Hg= 1 atm)

V = Volume of gas = 9.55 ml = 0.00955 L   (1 L=1000ml)

n = number of moles = ?

R = gas constant =$0.0821Latm/Kmol$

T =temperature =$35^0C=(35+273)K=308K$

$n=\frac{PV}{RT}$

$n=\frac{1.18atm\times 0.00955L}{0.0821L atm/K mol\times 308K}=4.46\times 10^{-4}moles$

Thus there are $4.45\times 10^{-4}moles$ of gas are in a container with a volume of 9.55 mL at 35 °C and a pressure of 895 mmHg