What is meant by the specific heat capacity of a material?The amount of energy which is required to change 1 kilogram of the material from a liquid to a gasThe total amount of thermal energy which can be stored by 1 kilogram of the materialThe amount of energy required to raise the temperature of 1 kilogram of the material by 1 degree CelsiusThe amount of energy which is required to change 1 kilogram of the material from a solid to a liquid2The specific heat capacity of water is 4200 J/kg °C. Calculate the amount of energy required to raise the temperature of 500 g of water from 20 to 70 °C.105 kJ105 MJ (105,000,000 J)147 kJ147 MJ (147,000,000 J)3A heater is used to transfer 40 kJ of energy to the thermal store of a 2 kg copper cylinder. By how much will this cause the temperature of the copper to increase? The specific heat capacity of copper is 385 J/kg °C.0.05 °C207.8 °C51.9 °C0.21 °C41,300 J of energy is transferred to the thermal store of a block of gold of mass 0.2 kg. This causes its temperature to rise from 100 to 150 °C. Use this information to calculate the specific heat capacity of gold.5.2 J/kg °C65 J/kg °C43.3 J/kg °C130 J/kg °C5What is meant by the specific latent heat of fusion of a substance?The amount of energy released when 1 kilogram of the substance changes from a gas to a liquid (at the same temperature)The amount of energy needed to fuse together two of the particles that make up the substanceThe amount of energy needed to change 1 kilogram of the substance from a solid to a liquid (at the same temperature)The total amount of energy needed to freeze a given amount of the substance6A beaker of (liquid) water has been heated to its boiling point. Calculate the mass of water which will evaporate when an additional 565 kJ of energy is transferred to the water. The specific latent heat of vaporisation of water is 2.26 MJ/kg (2,260,000 J/kg).250 kg0.25 kg1276.9 kg0.25 g
Question
What is meant by the specific heat capacity of a material?The amount of energy which is required to change 1 kilogram of the material from a liquid to a gasThe total amount of thermal energy which can be stored by 1 kilogram of the materialThe amount of energy required to raise the temperature of 1 kilogram of the material by 1 degree CelsiusThe amount of energy which is required to change 1 kilogram of the material from a solid to a liquid2The specific heat capacity of water is 4200 J/kg °C. Calculate the amount of energy required to raise the temperature of 500 g of water from 20 to 70 °C.105 kJ105 MJ (105,000,000 J)147 kJ147 MJ (147,000,000 J)3A heater is used to transfer 40 kJ of energy to the thermal store of a 2 kg copper cylinder. By how much will this cause the temperature of the copper to increase? The specific heat capacity of copper is 385 J/kg °C.0.05 °C207.8 °C51.9 °C0.21 °C41,300 J of energy is transferred to the thermal store of a block of gold of mass 0.2 kg. This causes its temperature to rise from 100 to 150 °C. Use this information to calculate the specific heat capacity of gold.5.2 J/kg °C65 J/kg °C43.3 J/kg °C130 J/kg °C5What is meant by the specific latent heat of fusion of a substance?The amount of energy released when 1 kilogram of the substance changes from a gas to a liquid (at the same temperature)The amount of energy needed to fuse together two of the particles that make up the substanceThe amount of energy needed to change 1 kilogram of the substance from a solid to a liquid (at the same temperature)The total amount of energy needed to freeze a given amount of the substance6A beaker of (liquid) water has been heated to its boiling point. Calculate the mass of water which will evaporate when an additional 565 kJ of energy is transferred to the water. The specific latent heat of vaporisation of water is 2.26 MJ/kg (2,260,000 J/kg).250 kg0.25 kg1276.9 kg0.25 g
Solution
It seems like you've pasted a set of multiple-choice questions related to heat capacity and latent heat. Here are the answers:
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The specific heat capacity of a material is the amount of energy required to raise the temperature of 1 kilogram of the material by 1 degree Celsius.
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To calculate the amount of energy required to raise the temperature of 500 g of water from 20 to 70 °C, we use the formula Q = mcΔT, where m is the mass, c is the specific heat capacity, and ΔT is the change in temperature. In this case, m = 0.5 kg (500 g), c = 4200 J/kg°C, and ΔT = 70 - 20 = 50°C. So, Q = 0.5 kg * 4200 J/kg°C * 50°C = 105,000 J or 105 kJ.
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Using the same formula, Q = mcΔT, we can rearrange it to find ΔT = Q/(mc). Here, Q = 40,000 J (40 kJ), m = 2 kg, and c = 385 J/kg°C. So, ΔT = 40,000 J / (2 kg * 385 J/kg°C) = 51.9°C.
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Again using the formula Q = mcΔT, we can rearrange it to find c = Q/(mΔT). Here, Q = 41,300 J, m = 0.2 kg, and ΔT = 150 - 100 = 50°C. So, c = 41,300 J / (0.2 kg * 50°C) = 4130 J/kg°C.
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The specific latent heat of fusion of a substance is the amount of energy needed to change 1 kilogram of the substance from a solid to a liquid (at the same temperature).
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To find the mass of water that will evaporate, we use the formula Q = mL, where m is the mass and L is the latent heat of vaporisation. Rearranging to find m = Q/L, we have Q = 565,000 J (565 kJ) and L = 2,260,000 J/kg. So, m = 565,000 J / 2,260,000 J/kg = 0.25 kg.
Similar Questions
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Specific heat capacity of water is 4200 J/kg⁰C. How much energy is needed to raise thetemperature of 3kg of water by 4⁰C?
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