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Llana [10]
3 years ago
9

How much energy is required to heat 70 g of water at 20°C to boiling

Physics
1 answer:
choli [55]3 years ago
3 0

Answer:

Q=23,430J

Explanation:

Hello,

In this case, since we compute the required energy via:

Q=mC\Delta T

Whereas m is the mass which here is 70 g, C the specific heat which for water is 4.184 J/(g°C) and ΔT is the temperature difference which is:

\Delta T=100-20=80\°C

Therefore, the energy turns out:

Q=70g*4.184\frac{J}{g\°C}*80\°C\\ \\Q=23,430J

Best regards.

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By what factors does the speed of the elctron exceed that of the proton?<br>​
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» An electron is lighter than a proton.

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