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1. A 200 g copper block absorbs 2.34 x 10³ of heat to raise its temperature by 30.0 K. What is the specific heat of copper?
I would solve this question by first converting the 200 g copper to 0.2 kg. Then solving with C = q/mt and I get 390 J/(kg•K). I know that if you solve it without converting g to kg you still get the right answer
(0.39 J/(g•°C), but how if you are using the wrong units (g•K)?
1 Answer
- ?Lv 73 years agoFavorite Answer
In the formula q = m c t, t stands for "change in temperature", but not "temperature".
I rather write the formula as q = m c ΔT in order to make it clear.
In this formula, the unit for c is J/(g °C) or J/(g K).
The change in temperate in °C is identical to the change in temperature in K.
For example, when the temperature changes from 27°C (i.e. 300 K) to 57°C (i.e. 330 K), the temperature is raised by 30°C or 30 K.