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Grade: 10
        
What will be the final temperature if 50g of water at exactly 0°c is added to 250g of water at 90°c?
7 months ago

Answers : (2)

Mohamed Harithkhan
18 Points
							
If heat lose/gain from the environment,
 
Heat lost by  250g of water at 90°c will be equal to heat gained by  50g of water at exactly 0°c.
Let’s take final temperature as t
So, m1*S*Δt1 = m2*S*Δt2
250 * (90 – t) = 50 * (t – 0)
300t = 90*250
t = 75°c
So, final temperature is 75°c
7 months ago
Mohamed Harithkhan
18 Points
							If heat lose/gain from the environment are neglected,
 
Heat lost by  250g of water at 90°c will be equal to heat gained by  50g of water at exactly 0°c.
Let’s take final temperature as t
So, m1*S*Δt= m2*S*Δt2
250 * (90 – t) = 50 * (t – 0)
300t = 90*250
t = 75°c
So, final temperature is 75°c
7 months ago
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Course Features

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  • Test paper with Video Solution
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  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


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