Question

Calculate the number of moles when 3.00l of a gas at 814 mmhg and 25 °c?

Answer 1

• Volume=V=3L
• Pressure=P=814mmHg
• Temp=T=25°C

So

No of moles=n

$\\ \rm\rightarrowtail PV=nRT$

$\\ \rm\rightarrowtail n=\dfrac{PV}{RT}$

$\\ \rm\rightarrowtail n=\dfrac{814(3)}{25R}$

$\\ \rm\rightarrowtail n=2442/25R$

$\\ \rm\rightarrowtail n=97.7Rmol$