Question

The ideal gas model is valid if which of the following conditions is true?

The gas density is low.
The gas density is high.
The temperature is low.
The temperature is high.
The gas density and the temperature are low.
The gas density and the temperature are high.
The gas density is high and the temperature is low.
The gas density is low and the temperature is high.

Answer 1

in ideal gas we have few things that we need to follow as following

1. Force of interaction between gas molecules are negligible.

2. There is no effect of gravity on them

3. All collisions are perfectly elastic collision.

4. there will be no energy loss

5. All newton's law are valid for them.

6. all molecules moves with same speed in random direction.

So here in order to follow all above conditions we have to maintain low pressure and high temperature in the gas due to which the density of gas becomes low.

So correct answer will be

The gas density is low and the temperature is high.