Help with Parts 1and 2 please! Thank you The Relationship between Heat and Tempe

Question

Help with Parts 1and 2 please! Thank you The Relationship between Heat and Temperature Assume you add identical "pulses" of heat to a liquid in a perfectly insulated cup (no heat can leak in or out). Which of the following determines how much the temperature of the liquid rises. Please do not guess - incorrectly selected items accumulate 0.5 negative points each. Number of heat pulses Total time period over which the heat pulses are administered Amount of liquid in the cup The type of liquid Temperature outside of the insulated cup The shape of the cup How many Joules of heat energy do you need to heat 200 ml of water from 20 degree C to 80 degree C. Show your calculations (use 4.19 J/(g degree C) for the specific heat capacity of water).

Explanation / Answer

2.)

you can convert. 1 calorie = 4.18 Joule


specific heat of water is 4.186 kJ/kgC
200 mL = 0.1 kg
energy = 4.186 kJ/kgC x 0.1 kg x 60ºC = 25.1 kJ

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