Question

Those who will answer will get 50 points​

Answer 1

Answer:

300K = 300-273 = 27°C

573K = 573-273 = 300°C

2a.Gas

2b.Liquid or Gas

3. It is assumed that some heat gets hidden which is called lantent heat of energy....

4••••Increasing Pressure.

••••Decreasing Temperature.

That's all

Question of Class 9 NCERT...

I REMEMBER THAT...

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Answer 2

☯ AnSwEr :

(1). (a)

We know that,

$\small{\star{\boxed{\sf{Temperarure \: in \: Celsius = Temperature \: in \: kelvin - 273}}}}$

★ Putting Values ★

$\sf{\dashrightarrow Celsius = 300 - 273} \\ \\ \sf{\dashrightarrow Celsius = 27^{\circ}}$

$\rule{150}{2}$

We know that,

$\small{\star{\boxed{\sf{Temperarure \: in \: Celsius = Temperature \: in \: kelvin - 273}}}}$

★ Putting Values ★

$\sf{\dashrightarrow Celsius = 573 - 273} \\ \\ \sf{\dashrightarrow Celsius = 300^{\circ}}$

$\rule{200}{2}$

(2). (a)

At 250°C the physical state of water is gas because at 100°C water got evaporated .

$\rule{150}{2}$

(b)

At 100°C the physical state of water can be liquid or gas because at 100°C water start evaporating.

$\rule{200}{2}$

(3).

The temperature remains constant during the change of state because the heat supplied during the change is used up in overcoming the intermolecular forces between the particles of the state. This is also known as Latent heat.

$\rule{200}{2}$

(4).

Method to liquify atmospheric gas is by decreasing temperature.