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du8nAnawestktf
du8nAnawestktf du8nAnawestktf
  • 29-12-2015
  • Chemistry
Answered

If a 38g sample of water releases 621J of heat energy and cools to 4 0C. What was the initial temperature of the water?

Verified Answer :

Billymkhoi
Billymkhoi Billymkhoi
  • 29-12-2015

Let x be the initial temperature of the water.

According to calorimetry formula, we have:
Q=mcΔT
⇒621J= (38g)(4.18J/(Cg))*(x-4)C
⇒ x= 8 degrees C 
 
Hope this would help~
       

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