The specific heat of a substance is 0.38 J/goC. How much energy is required to raise the temperature of 42 g of the substance from 25oC to 39oC?

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Question:

The specific heat of a substance is 0.38 J/goC. How much energy is required to raise the temperature of 42 g of the substance from 25oC to 39oC?

Answers

Answer:223.4JExplanation:Given parameters: Specific heat capacity of substance  = 0.38J/g°C Mass of substance  = 42g Initial temperature  = 25°CFinal temperature  = 39°C Unknown: Energy required to raise the temperature  = ? Solution: The amount of heat required by the substances can be derived using the expression below;   H  = m c Δt H is the amount of heat energy m is the mass c is the specific heat capacity Δt is the change in temperature;  Δt  = 39°C  -  25°C  = 14°C  Now insert the parameters and solve;  H = 42 x 0.38 x 14  = 223.4J

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