High School

A 38.2 g piece of metal has an initial temperature of 15.4 °C. After 458 J of heat is added to the metal, its temperature increases to 46.7 °C. What is the specific heat capacity of the metal?

Answer :

The specific heat capacity of the metal is approximately [tex]\( 0.382 \, \text{J/g°C} \).[/tex]

To find the specific heat capacity (c) of the metal, we can use the formula:

[tex]\[ q = mcΔT \]Where:- \( q \) is the heat added (in joules)- \( m \) is the mass of the metal (in grams)- \( c \) is the specific heat capacity of the metal (in J/g°C)- \( ΔT \) is the change in temperature (in °C)[/tex]

Given:

[tex]- \( m = 38.2 \, \text{g} \)- \( ΔT = 46.7 \, \text{°C} - 15.4 \, \text{°C} = 31.3 \, \text{°C} \)- \( q = 458 \, \text{J} \)We can rearrange the formula to solve for \( c \):\[ c = \frac{q}{mΔT} \][/tex]

Now, plug in the given values:

[tex]- \( m = 38.2 \, \text{g} \)- \( ΔT = 46.7 \, \text{°C} - 15.4 \, \text{°C} = 31.3 \, \text{°C} \)- \( q = 458 \, \text{J} \)So, the specific heat capacity of the metal is approximately \( 0.382 \, \text{J/g°C} \).[/tex]

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