uestions
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.
Yo
evapo
a а
1.5 Evaporation
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Answer:
Convert the following temperatures to Celsius scale : (a) 300 K (b) 573 K. Solution : (a)(300-273)=27∘C (b)(573-273)=300∘C.
The physical state of water at 250 degrees Celsius ( 250 ºC) is a gaseous state. As we know that the boiling point of water is 100ºC
3. The temperature remains 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.
Explanation:
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