A student heats up a substance from 100 C to 145 C, which requires thermal energy of 20000 J. If the mass of the chemical is 100 g, determine the specific heat capacity of the substance.

THE SPECIFIC HEAT CAPACITY IS 4.44 J/G C

Explanation:

Heat energy = 20000 J

Mass = 100 g

Change in temperature = 145 C - 100 C = 45 C

Specific heat capacity = unknown

In calculating the specific heat capacity, we use the formula:

Heat = mass * specific heat capacity * change in temperature

Re-arranging the formula by making the specific heat capacity the subject of the equation, we have:

Specific heat capacity = Heat / mass * change in temperature

Specific heat capacity = 20000 J / 100 g * 45 C

Specific heat = 20000 / 4500

Specific heat = 4.44 J/g C

The specific heat capacity of the substance is therefore 4.44 J/g C

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