Specific Heat Capacity: Find Temperature

Question

1) A sample of solid titanium is heated with an electrical coil. If 103 Joules of energy are added to a 10.6 gram sample initially at 21.1°C, what is the final temperature of the titanium?

2) A sample of solid copper is heated with an electrical coil. If 94.7 Joules of energy are added to a 15.0 gram sample and the final temperature is 39.0°C, what is the initial temperature of the copper?

Answer 1

1). q = mC∆T

q = heat energy = 103 J

m = mass = 10.6 g

C = specific heat of titanium (look it up in a table)

∆T = change in temperature = ?

Solve for ∆T and add that to 21.1º to get the final temperature

2). q = mC∆T

all variable are as described in #1

Solve for ∆T and subtract it from 39.0º to get the initial temperature