Receiving heat

How many degrees Celsius was an iron cylinder weighing 300 g heated in a water bath if it received heat of 7.2 kJ? (specific heat capacity of iron c = 0.46kJ/kg/ºC)

Correct answer:

t =  52.1739 °C

Step-by-step explanation:

$$\begin{gathered} m=300\text{g}\to \text{kg}=300:1000\text{kg}=0.3\text{kg} \\ Q=7.2\text{kJ} \\ c=0.46\text{kJ/kg/°C} \\ Q=mct \\ t=\frac{Q}{m\cdot c}=\frac{7.2}{0.3\cdot 0.46}=\frac{1200}{23}\text{°C}=52.1739\text{°C} \end{gathered}$$

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