Question

If a mass of copper takes 35.25 kJ of heat to raise the temperature from 23°C to 79

°C, what is the mass, in kg, of the copper?
(specific heat of copper = 385 J/kg-°C)

Answer 1

The mass of the copper is approximately 1 kg.

Step-by-step explanation:

To find the mass of the copper, we will first calculate the amount of heat energy absorbed by the copper using the formula:

Q = mcΔT

Where:

• Q = amount of heat energy (35.25 kJ = 35,250 J)
• m = mass of copper (unknown)
• c = specific heat of copper (385 J/kg-°C)
• ΔT = change in temperature (79°C - 23°C = 56°C)

Plugging in the given values, we have:

35,250 J = m * 385 J/kg-°C * 56°C

Simplifying this equation, we can solve for the mass 'm':

m = 35,250 J / (385 J/kg-°C * 56°C)

Calculating this, we get:

m ≈ 1 kg

Therefore, the mass of the copper is approximately 1 kg.

Learn more about Calculating the mass of copper based on heat energy and specific heat capacity