jorden7544
29.01.2020 •
Physics
You have a 2.00 kg block of lead. lead melts at 327.5°c. cpb = 130.0 j/kg*c and △hj for lead is 2.04x10^4 j/kg . say you start at room temperature (25.0°c). how much heat must you transfer to melt all the lead?
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Ответ:
I hope it is no too late
Explanation:
hmmm,
In a gas, for example, the molecules are traveling in random directions at a variety of speeds - some are fast and some are slow. ... If more energy is put into the system, the average speed of the molecules will increase and more thermal energy or heat will be produced.