Question

The table shows the specific heat capacities of various substances. How much energy is required to raise the temperature of 5g of air by 10°C? Use the table below to help you.

Answer 1

Answer:

50.25 J

Explanation:

Energy = Mass in kg * Specific heat in J/K/Kg * Temp. Difference  

            = 5 x 10^-3 * 1005 * 10

            = 50.25 J

Answer 2

50.25 J energy is required to raise the temperature of 5g of air by 10°C.

As per given information,

Mass = 5 g

Specific heat capacity of air = 1005 J/kg°C = 1.005 J/g°C

Change in temperature = 10°C

The specific heat capacity is measured in J/(kg K) or J/(kg °C), and it is the amount of heat (J) absorbed per unit mass (kg) of the material when its temperature rises by 1 K (or 1 °C).

We may use the following formula to determine how much energy is needed to increase the temperature of 5g of air by 10°C:

Energy = mass x specific heat capacity x change in temperature

By substituting given values we get:

Energy = 5g x 1.005 J/g°C x 10°C

Energy = 50.25 J

Hence, assuming a specific heat capacity of 1.005 J/g°C, it takes around 50.25 joules of energy to increase the temperature of 5 g of air by 10 °C.

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