What is the specific heat of the lead? (See added details).?

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What is the specific heat of the lead? (See added details).?

A piece of lead with a mass 121.6 g was heated by an electrical coil. From the resistance of the coil, the current and the time current flowed, it was calculated that 235 J (Joules) of heat was added to the lead. The temperature of the lead rose from 20.4 degrees Celsius to 35.5 degrees Celsius. What is the specific heat of the lead?

2006-10-17 18:48:59 · 2 answers · asked by keenan93312 1 in Science & Mathematics ➔ Chemistry

2 answers

spec. heat = mass * energy/temp change

121.6 * 235 / 15.1

2006-10-17 18:55:27 · answer #1 · answered by Slave to JC 4 · 0⤊ 0⤋

Specific heat is multiplied by mass and temperature change to get total heat energy. E = cp*m*∆T; or cp = E/(m*∆T) The result will be in joules/gºC

2006-10-17 18:57:20 · answer #2 · answered by gp4rts 7 · 0⤊ 0⤋