Question

1. Calculate the change in internal energy ΔΕ when 15.6 kJ of heat is added to the system and 1.4 kJ of work is done to the system. 2. How much work can a bicycle pump perform when the the cylinder compresses from 3L to 2.5 L as you apply a pressure of 1.1 atm? J. A hot air baloon expands from 4,00,000L to 4.00,000L by the addion of 130,000000 of eat energy Calculate the change in energy of the system. 1 L atm 101.3 J. e 4. A 15g sample of copper, The temperature of the water and copper eventually change to 26.020C after thermal equilibration Determine the specific heat (C) of the copper. (The specific heat of water is 4.18J/g-c) heated to 100°C is placed in 100mL of 25°C water, insulated from heat loss to the

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Answer #1

1) Change in internal energy (AE)W Here, d is the heat energv and w 1s the work done. Since work 1s don e to the system w is

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