Step-by-step explanation:
The amount of copper used can be calculated using the specific heat capacity of copper and the amount of energy used to raise its temperature:
Q = mcΔT
where Q is the amount of energy used, m is the mass of copper used, c is the specific heat capacity of copper, and ΔT is the change in temperature.
The specific heat capacity of copper is approximately 0.385 J/g°C.
Substituting the given values, we get:
554 = m * 0.385 * 9
Simplifying:
m = 554 / (0.385 * 9) ≈ 166.4 grams
Therefore, approximately 166.4 grams of copper were used.