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Thermal physics Typeit
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A gas is compressed by 3.8 m3 at a constant pressure of 120 kPa. At the same time, 250 kJ of heat are extracted from the gas. The change in internal energy of the gas is J.
The element in a boiler heats water at a rate of 44 kW. It would take s to heat 5.0 kg of water from 20 °C to 80 °C. The specific heat capacity of water is 4200 J kg-1 K-1.
An 18 g paraffin wax candle burns with a power of 32 W. The latent heat of fusion of paraffin wax is 220 kJ kg-1. It takes 41 minutes for the candle to melt entirely. % of the energy from the candle is used to melt the wax.
3.3 moles of a gas take up a volume of 61 dm3 at a pressure of 74 kPa and a temperature of K.
At a constant volume, a gas is heated from a pressure of 24 kPa and a temperature of 38 °C to a pressure of kPa and a temperature of 67 °C.
The root mean square speed of the molecules in a gas is 9.4 m s-1. 1.4 moles of the gas have a volume of 22 dm3 and a pressure of 81 kPa. The molar mass of the gas is g mol-1.
At a temperature of 300 K, the average kinetic energy of the molecules in a gas is × 10-21 J.
The element in a boiler heats water at a rate of 44 kW. It would take s to heat 5.0 kg of water from 20 °C to 80 °C. The specific heat capacity of water is 4200 J kg-1 K-1.
An 18 g paraffin wax candle burns with a power of 32 W. The latent heat of fusion of paraffin wax is 220 kJ kg-1. It takes 41 minutes for the candle to melt entirely. % of the energy from the candle is used to melt the wax.
3.3 moles of a gas take up a volume of 61 dm3 at a pressure of 74 kPa and a temperature of K.
At a constant volume, a gas is heated from a pressure of 24 kPa and a temperature of 38 °C to a pressure of kPa and a temperature of 67 °C.
The root mean square speed of the molecules in a gas is 9.4 m s-1. 1.4 moles of the gas have a volume of 22 dm3 and a pressure of 81 kPa. The molar mass of the gas is g mol-1.
At a temperature of 300 K, the average kinetic energy of the molecules in a gas is × 10-21 J.