The temperature of 50 g of water is 70 degrees Celsius. How much heat must be added to raise the temperature?

"The temperature of 50 g of water is 70 degrees Celsius. How much heat must be added to raise the temperature to 80 degrees Celsius?

 

A. 540 cal

B. 10 cal

C. 200 cal

D. 500 cal

E. 80 cal"

Answers (6)

dewaan 06-03-2013
dewaan - Biju Patnaik University of Technology, Rourkela
"ΔH = mcΔT ΔH = 50*1*(80-70) = 500 calories (taking m = 50 gram, c = 1cal/g/C degree) So. option D must be correct."
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cool_bre 15-05-2013
cool_bre - Anna University of Technology
  "certain temperature capacity for h2o = iv.16 T/(h*degC) "
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