Answer:
c = 0.0635 J/g°C
Step-by-step explanation:
We can use the formula for heat energy:
Q = m * c * ΔT
where Q is the heat energy absorbed by the substance, m is its mass, c is its specific heat capacity, and ΔT is the change in temperature. Rearranging the formula, we get:
c = Q / (m * ΔT)
Plugging in the given values, we get:
c = 9.0 J / (4.3 g * (80.0°C - 50.0°C))
c = 9.0 J / (4.3 g * 30.0°C)
c = 0.0635 J/g°C
Therefore, the specific heat capacity of the substance is 0.0635 J/g°C.