Question

How much heat will be lost by a 6.41 g piece of zinc if it decreases in temperature from 98.1 0C to 37.4 0C?

Answer 1

147 J

Step-by-step explanation:

Step 1: Given and required data

• Mass of zinc (m): 6.41 g

• Specific heat capacity of zinc (c): 0.377 J/g.°C

• Initial temperature (T₁): 98.1 °C

• Final temperature (T₂): 37.4 °C

Step 2: Calculate the amount of heat (Q) lost by the piece of zinc

We will use the following expression.

Q = c × m × (T₂ - T₁)

Q = (0.377 J/g.°C) × 6.41 g × (37.4 °C - 98.1 °C) = -147 J

The piece of zinc will lose 147 J in the form of heat.