Answer to Question #124358 in Molecular Physics | Thermodynamics for Gyamfi Maxwell

Question

1. Explain in 15 words only, why an ice cube at 0 ˚C is more effective in cooling a drink than
the same mass of water also at 0 ˚C. (3 marks)
2. A woman is unhappy with the rate at which eggs cook in a saucepan of boiling water. State
in 2 words only, the method she could use to get the eggs to cook fastest. (2 marks)
3. A faulty mercury-in-glass thermometer indicates that the ice point of pure water is 0.8 ˚C
and the steam point 99.5 ˚C under standard atmospheric pressure. Deduce an expression in
the form of y = mx + c, where m and c are constants, to relate the faulty temperature reading
F ˚C to the correct temperature T ˚C. (3 marks)
4. Using the equation deduced in Question 3 above, calculate the correct temperatures when
the faulty thermometer reads -15 ˚C and 50 ˚C.

Answer 1

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