Question

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Answer 1

1.8 × 10² J

Step-by-step explanation:

Step 1: Given data

• Mass of the rock (m): 20 g

• Initial temperature: 10 °C

• Final temperature: 29 °C

• Specific heat capacity of granite (c): 0.48 J/g.°C

Step 2: Calculate the amount of heat absorbed (q)

We will use the following expression.

q = m × c × ΔT

q = 20 g × 0.48 J/g.°C × (29 °C - 10 °C) = 1.8 × 10² J