Answer: 4000J/kg°C
Explanation:
The quantity of Heat Energy (Q) required to heat substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)
Thus, Q = MCΦ
Since,
Q = 1000joules
M = 25grams (Convert grams to kilograms)
1000grams = 1kg
So, 25grams = (25/1000)kg
= 0.025kg
C = ? (Let unknown value be Z)
Φ = 100°C
Then, apply Q = MCΦ
1000j = 0.025kg x Z x 100°C
1000j = 2.5Kg°C x Z
Divide both sides by 2.5kg°C
1000j/2.5kg°C = (2.5Kg°C x Z)/2.5kg°C
4000J/kg°C = Z
Recall that Z is the specific heat capacity of the substance.
Thus, the specific heat capacity of the substance is 4000J/kg°C
