Question 17
Quantity of HeatHow much heat is absorbed when a block of copper of mass 0.05kg and specific heat capacity 390 J kg−1 K−1 is heated from 20°C to 70°C?
- A.3.98 × 10−1 J
- B.9.75 × 102 J
- C.3.98 × 103 J
- D.9.75 × 103 J
Show the answer and explanation
Answer: B (9.75 × 102 J)
Explanation
Q = mcθ = 0.05 × 390 × 50 = 975 J = 9.75 × 102 J.