Specific Heat Problem in Celsius

AI Thread Summary
To calculate the heat required to change the temperature of 2.0 kilograms of substance X from 40 degrees Celsius to 55 degrees Celsius, the specific heat is given as 200 J/g°C. The temperature change is 15°C, and the mass in grams is 2000 g. Using the formula Q = (m)(c)(change T), the calculation yields Q = (2000 g)(200 J/g°C)(15°C), resulting in 6,000,000 J. The solution appears correct, but attention to significant figures is advised. Properly addressing significant figures is crucial for accuracy in scientific calculations.
Ki-nana18
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Homework Statement



The specific heat of substance X is 200 J/g*C, how much heat is required to change the temperature of 2.0 kilograms of substance X from 40 degrees Celsius to 55 degrees Celsius?

Homework Equations



Q=(m)(c)(change T)

The Attempt at a Solution


55 C-40 C= 15 C
2.0kg(1000 g/1 kg)= 2000 g

(2000 g)(200 J/g*C)(15 C)= 6000000 J

I'm am not sure if this is right at all. :rolleyes: Is it right?
 
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Looks correct to me.
 
Watch significant numbers.

--
methods
 
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