How much energy would it take to heat a section of the copper tubing that weighs about 485.0 g , from 13.11 ∘C to 22.24 ∘C ? Copper has a specific heat of 0.3850 J/(g⋅∘C).

Answer 1

For thermochemistry calculations involving specific heat values, change in temperatures, and a solid's mass, we can use the equation, q = mcΔT, to calculate the amount of heat energy needed.

For the equation, q = mcΔT [where q = energy in the form of heat in units of joules; m = mass of the solid in untis of grams; c = specific heat of the solid in units of joules per gram-degree Celsius; and ΔT = temperature change of the solid] they have given us the values for: mass, m, in units of grams; specific heat of copper, c, in units of J/g-^oC; and the final and initial temperature values, in units of degrees Celsius, to calculate ΔT where ΔT= T_final - T_initial.

q = (m)(c)(ΔT) = (485.0 g)(0.3850 J/g-^oC)(22.24^oC - 13.11^oC)

units of grams, and degrees Celsius cancel out to be left with an energy value, in the form of heat, with units of Joules, J

q = 1705 J