When 100g of liquids L1 at 78oC was mixed with Xg of liquid L2 at 50oC, the final temperature was 60oC. Given that the specific heat capacity of L2is half t...

Assessment: JAMB UTME - Physics - 1994 Subject: Physics

Question 1 Report

When 100g of liquids L1 at 78oC was mixed with Xg of liquid L2 at 50oC, the final temperature was 60oC. Given that the specific heat capacity of L2is half that of L1, find x
Answer Details
Heat lost by L1 = heat gained by L2

cL1 = 2cL2

100 x 2cL2 x (78 - 60)

= xg x cL2 x (60 - 50)

xg = 150g

Read lesson note on Temperature And Its Measurement (JAMB)
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