Answer to Question #330422 in General Chemistry for dodo

Question

The specific heat capacity for silver is 0.24 J/goC. Calculate the energy required to raise the temperature of 150.0 g Ag from 273 K to 298 K.

Answer 1

Solution:

q = m × C × ΔT

q = m × C × (T_f − T_i),

where:

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

m = mass of sample (g)

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

T_f = final temperature (°C)

T_i = initial temperature (°C)

m = 150.0 g

C = 0.24 J °C⁻¹ g⁻¹

T_f = 298 K = 25°C

T_i = 273 K = 0°C

Therefore,

q = (150.0 g) × (0.24 J °C⁻¹ g⁻¹) × ( 25°C − 0°C) = 900 J

q = 900 J

Answer: 900 J of energy required