Final answer:
To heat 5 kg of silver from 20°C to 960°C, 1.1075×10^9 joules of heat are required, using the specific heat capacity of silver and the formula Q = mcΔT.
Step-by-step explanation:
To calculate how much heat is required to raise the temperature of 5 kg of silver from 20°C to 960°C, the specific heat capacity of silver and the equation Q = mcΔT, where Q is the heat added, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature, are needed. The specific heat capacity of silver is 235 J/kg°C.
The change in temperature (ΔT) is 960°C - 20°C = 940°C. Substituting the known values into the equation, we get:
Q = (5,000 g) × (235 J/kg°C) × (940°C) = 1,107,500,000 J or 1.1075×109 J
Therefore, 1.1075×109 joules of heat are needed to raise the temperature of 5 kg of silver from 20°C to 960°C.