questions:
1.Convert the following temperature to celsius scale :
a . 300 K b . 573 K
2. What is the physical state of water at :
a . 250 ° C | b . 100 ° C ?
3.For any substance , why does the temperature remain constant during the change of state ?
4. Suggest a method to liquefy atmospheric gases ?
Answers
Explanation:
1.a Ans- 300- 273 = 27°C
b. Ans- 573- 273 = 300°C
2.a Ans- The physical state of water at 250°C is a gaseous state.
b. Ans- The physical state of water will be both liquid and gaseous state at 100° C
3.Ans- The temperature remain constant during the change of state because the heat energy which is supplied to change the state of matter is used in breaking the intermolecular forces and other attractive forces . Hence the temperature remains constant as all the heat is used up and no external heat is released or absorbed.
4.Ans- Similarly, atmospheric gases can be liquefied by applying pressure and lowering temperature. When enough pressure is applied, the gases are highly compressed into a small volume. The particles of gases get so close together that they start attracting one another sufficiently to form a liquid.
hope it helps u