Question

60gm of water is mixed with 90gm water at 20°C; the temperature of mixture is obtained as 70°C; Find out temperature of 60gm water is..
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Answer 1

Answer:

app value change kar ke likhlo

Explanation:

Heat lost by the hot water=Heat gained by the cold water.

m  

1

​  

cΔT  

1

​  

=m  

2

​  

cΔT  

2

​  

 

20(60−T)=60(T−20)

60−T=3T−60

4T=120

T=30  

o

C

Answer 2

Answer:

Explanation:

Temperature of 60 gm water =X

Temperature of 90 gm water = 20

Temperature when both water are added = 70

70 =X+20

70 = x+20

70-20 =x

∴ x= 50