Questions
When 1000 J of heat energy is applied separately to 10 g of iron (with a specific heat capacity of 0.45 J/(g·°C)) and 20 g of water (with a specific heat capacity of 4.184 J/(g·°C)), calculate the temperature rise for each material! (Point = 25)
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Test
9.2 moles of helium gas are under a pressure of 1.7 atm and a temperature of 20 °C. Determine the volume occupied by the gas! (R = 0.082 (L.atm)/(K.mol)) (Point = 25)
Answer :
How much heat energy is required for 250 g of ice at –20 °C to completely melt and become 250 g of liquid water at 80 °C? Diketahui cice = 2.05 kJ/(kg.K), cwater = 4.18 kJ/(kg.K), Lf = 333.5 kJ/kg (Point = 25)
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