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19g of water at 30°C and 5g of ice at − 20°C are mixed together in a calorimeter. What is the final temperature of the mixture ? Given specific heat of ice = 0.5 cal g − 1°C − 1 and latent heat of fusion of ice = 0.8 cal g−1
  • a)
    0°C
  • b)
    − 5°C
  • c)
    5°C
  • d)
    10°C
Correct answer is option 'C'. Can you explain this answer?
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19g of water at 30°C and 5g of ice at − 20°C are mixed t...
To calculate the final temperature of the water, we need to know the initial temperature, the mass of the water, and the heat capacity of water.

Assuming the initial temperature is 30°C, we can use the formula:

Q = mcΔT

Where:
Q = heat transferred (in joules)
m = mass of water (in grams)
c = specific heat capacity of water (4.18 J/g°C)
ΔT = change in temperature (final temperature - initial temperature)

Given:
m = 19 grams
c = 4.18 J/g°C
ΔT = final temperature - 30°C

Let's assume the final temperature is T.

Q = mcΔT
Q = (19 g)(4.18 J/g°C)(T - 30°C)

Now, let's assume the heat transferred, Q, is 0 since no heat is added or removed from the water. This means the final temperature will be the same as the initial temperature.

0 = (19 g)(4.18 J/g°C)(T - 30°C)

Simplifying the equation:

0 = (79.42 J/°C)(T - 30°C)

0 = 79.42T - 2382.6

79.42T = 2382.6

T ≈ 30°C

Therefore, the final temperature of the water would be approximately 30°C.
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19g of water at 30°C and 5g of ice at − 20°C are mixed together in a calorimeter. What is the final temperature of the mixture ? Given specific heat of ice = 0.5 cal g − 1°C − 1 and latent heat of fusion of ice = 0.8 cal g−1a)0°Cb)− 5°Cc)5°Cd)10°CCorrect answer is option 'C'. Can you explain this answer?
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19g of water at 30°C and 5g of ice at − 20°C are mixed together in a calorimeter. What is the final temperature of the mixture ? Given specific heat of ice = 0.5 cal g − 1°C − 1 and latent heat of fusion of ice = 0.8 cal g−1a)0°Cb)− 5°Cc)5°Cd)10°CCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about 19g of water at 30°C and 5g of ice at − 20°C are mixed together in a calorimeter. What is the final temperature of the mixture ? Given specific heat of ice = 0.5 cal g − 1°C − 1 and latent heat of fusion of ice = 0.8 cal g−1a)0°Cb)− 5°Cc)5°Cd)10°CCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 19g of water at 30°C and 5g of ice at − 20°C are mixed together in a calorimeter. What is the final temperature of the mixture ? Given specific heat of ice = 0.5 cal g − 1°C − 1 and latent heat of fusion of ice = 0.8 cal g−1a)0°Cb)− 5°Cc)5°Cd)10°CCorrect answer is option 'C'. Can you explain this answer?.
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