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Please answer
Question 1 (3 points)
If a glass of water containing 40g at 20 degrees C is heated to 50 degress C, what is the amount of energy gained?

Respuesta :

ardni313

The amount of energy gained : 5016 J

Further explanation

Heat can be calculated using the formula:  

Q = mc∆T  

Q = heat, J  

m = mass, g  

c = specific heat, joules / g ° C  

∆T = temperature difference, ° C / K  

mass water = 40 g

c water = 4.18 J/g C

∆T = temperature difference = 50 - 20 = 30 C

Heat gained :

[tex]\tt Q=40\times 4.18\times 30\\\\Q=5016~J[/tex]

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