Answer to Question #341093 in Inorganic Chemistry for bigboy

Question

a metal has a specific heat capacity of .899 Jg-1k-1 How much energy is required to raise the temperature of 2.00 Kg of the metal by 80 K

Answer 1

Solution:

q = m × C × ΔT

where:

q = amount of heat energy gained or lost by substance (J)

m = mass of sample (g)

C = specific heat capacity (J K⁻¹ g⁻¹)

ΔT = change in temperature (K)

 

m = 2.00 kg × (1000 g / 1 kg) = 2000 g

C = 0.899 J K⁻¹ g⁻¹

ΔT = 80 K

Thus,

q = (2000 g) × (0.899 J K⁻¹ g⁻¹) × (80 K) = 143840 J = 143.84 kJ

q = 143.84 kJ

Answer: 143.84 kJ of energy is required