What will be the internal energy of 8g of oxygen at STP? - Vidyadip

Question

What will be the internal energy of $8g$ of oxygen at STP?

✓

Answer

Oxygen is a diatomic gas Number of moles of $O_2$ gas$=\frac{\text{Atomic wt.}}{\text{Molecular wt.}}=\frac{8}{32}$
$=\frac{1}{4}=0.25$
$\therefore$ Energy associated with 1 mole of oxygen
$\text{U}=\frac{5}2{}\text{RT}$
$\therefore$ Internal energy of 8g of oxygen $=0.25\times\frac{5}{2}\text{RT}$
$=0.25\times\frac{5}{2}\times8.31\times273=1417.9\text{J}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "3 Marks Question" from Kinetic Theory→Kinetic Theory — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Define the restoring force and it characteristic in case of an oscillating body.

Two sound waves originating from the same source, travel along different paths in air and then meet at a point. If the source vibrates at a frequency of 1kHz and one path is 83cm longer than the other, what will be the nature of interference? The speed of sound in air is 332m/s.

An amount Q of heat is added to a monatomic ideal gas in a process in which the gas performs a work $\frac{\text{Q}}{2}$ on its surrounding. Find the molar heat capacity for the process.

By using the method of dimension, check the accuracy of the following formula : $ \text{T}=\frac{\text{rh}\rho\text{g}}{2\cos\theta},$where T is the surface tension, h is the height of the liquid,$\rho$ is the density of the liquid, g acceleration due to gravity $\theta$ angle of contact, and r is the radius of the tube.

$2g$ of hydrogen is sealed in a vessel of volume $0.02m^3$ and is maintained at $300K$. Calculate the pressure in the vessel.

A force of $(2500 \pm 5)$ N is applied over an area of $(0.32 \pm 0.02) \text{m}^2.$ Calculate the pressure exerted over the area.

Find the centre of mass of three particles at the vertices of an equilateral triangle. The masses of the particles are 100g, 150g, and 200g respectively. Each side of the equilateral triangle is 0.5m long.

A convex lens produces a double size real image when an object is placed at a distance of 18cm from it. Where should the object be placed to produce a triple size real image?

A cricket ball is thrown at a speed of $28m/ s$ in a direction $30^\circ$ above the horizontal. Calculate: $(a)$ the maximum height $(b)$ the time taken by the ball to return to the same level $(c)$ the horizontal distance from the thrower to the point where the ball returns to the same level.

Water is boiled in a container having a bottom of surface area $25cm^2$, thickness $1.0mm$ and thermal conductivity $50\text{wm}^{-1}{^{\circ}}\text{C}^{-1}.$ 100g of water is converted into steam per minute in the steady state after the boiling starts. Assuming that no heat is lost to the atmosphere, calculate the temperature of the lower surface of the bottom. Latent heat of vaporization of water $=0.26\times10^6\text{Jkg}^{-1}.$