Answer to Question #170387 in Chemistry for Ava Brooke

Question

Find the amount of energy required to raise the temperature of 9.19 g silicon from 18 ^oC to 58 ^oC

s_Si = .71 J/g^oC

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

m = mass of sample

C = specific heat capacity (J ^oC^-1 g^-1)

T_f = final temperature

T_i = initial temperature

 

Thus:

q = (9.19 g) × (0.71 J ^oC^-1 g^-1) × (58 - 18)^oC = 260.996 J = 261 J

q = 261 J

Answer: 261 Joules of energy required.