200.0 Joules of heat is required to raise the temperature of an object sample by 3.00ºC. If the specific heat of the object is .01490 J/gºC, what is the mass of the sample in kilograms?
0.993 x 10-3 kg
4474.3 kg
4.474 kg
40.268 kg
0.067 kg
A 2.00-kg metal object requires 5020 J of heat to raise its temperature from 20.0°C to 40.0°C. What is the specific heat capacity of the metal?
126 J/(kg • °C)
106 KJ/(kg • °C)
126 cal/(kg • °C)
142 kcal(kg • °C)
1146 joules of heat is released when a 100.0 gram sample of an unknown metal cools from 95.00°C to 65.00°C. Determine the specific heat of a metal.
0.755 J/g°C
1.22 J/g°C
.887 J/g°C
.3820 J/g°C
2006-12-14 06:19:57 · 2 answers · asked by queenpravato 1 in Science & Mathematics ➔ Chemistry
The important equation you need to know how to use is often written as:
q=mc(deltaT)
where q is the amount of heat, m is the mass of the sample, c is the specific heat of the material and delta T is the change in temperature.
With this equation, you can answer ALL of those questions.
2006-12-14 06:23:16 · answer #1 · answered by hcbiochem 7 · 0⤊ 0⤋
3820 J/g°C
2006-12-14 06:24:02 · answer #2 · answered by Anonymous · 0⤊ 0⤋