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bonufazy [111]
3 years ago
11

HELP FAST 100 PTSCalculate the amount of heat needed to convert 100.0 g of liquid water at 25 °C to water at 100 °C.

Chemistry
2 answers:
alex41 [277]3 years ago
8 0

Answer:

\Large \boxed{\sf 31400\  J}

Explanation:

Use formula

\displaystyle \sf Heat \ (J)=mass \ (g) \times specific \ heat \ capacity \ (Jg^{-1}\°C^{-1}) \times change \ in \ temperature \ (\°C)

Specific heat capacity of water is 4.18 J/(g °C)

Substitute the values in formula and evaluate

\displaystyle \sf Heat \ (J)=100.0 \ g \times 4.18 \ Jg^{-1}\°C^{-1} \times (100\°C-25\°C)

\displaystyle Q=100.0 \times 4.18 \times (100-25  )=31350

Alex Ar [27]3 years ago
4 0

Answer:

31,380 Joules

Explanation:

Given Data:

Mass = m = 100 g

Temperature 1 = = 25 °C

Temperature 2 = = 100 °C

Specific Heat Constant = c = 4.184

Change in Temp. = ΔT = 100 - 25 = 75 °C

Required:

Heat = Q = ?

Formula:

Q = mcΔT

Solution:

Q = (100)(4.184)(75)

Q = 31, 380 Joules

Hope this helped!

~AH1807

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