The specific heat of copper metal of .385J/gC and it is .128 J/gC for gold. Assume you place 100 g for each metal, originally at 25C, in a boiling water bath at 100C. If each metal takes up heat at the same rate (the number of joules of heat absorbed per minute is the same), which piece of metal reaches 100C first? explain?
Wouldn't both reach 100C at the same time because the question actually sayseach metal absorbs heat at the same rate??
Thanks
2007-12-30 06:46:59 · 3 answers · asked by senseless.student 1 in Science & Mathematics ➔ Chemistry
The rate of heat absorption, J/min, is the same. But 100g Cu must absorb 38.5 J, whereas 100g Au need absorb only 12.8, so Au will get to 100C faster.
2007-12-30 06:56:36 · answer #1 · answered by steve_geo1 7 · 0⤊ 0⤋
Think...which metal requires more energy (heat) to reach 100 deg?
If each metal takes up heat at the same rate, and one metal must take up more heat than the other, how could they both get to 100 deg at the same time?
If you were filling a 5 gallon container and a 1 gallon contain at the same rate of 1 gal per minute, which would be filled first?
2007-12-30 06:56:17 · answer #2 · answered by skipper 7 · 0⤊ 0⤋
From q= m c ΔT you see that heat (energy) is directly proportional to temperature so the one with the lower specific heat will change temperature much easier that one with a higher one. Your answer is Au.
2007-12-30 06:52:10 · answer #3 · answered by (Ω)Carlos S 2 · 0⤊ 0⤋