Question

A sample of iron which has a specific heat capacity of ___.

A) 0.45 J/g°C
B) 0.82 J/g°C
C) 0.56 J/g°C
D) 0.71 J/g°C

Answer 1

The specific heat capacity of iron is 0.449 J/g°C. To calculate the heat involved in raising the temperature of an object, you can use the formula q = (specific heat capacity) x (mass) x (temperature change).

Step-by-step explanation:

The specific heat capacity of iron is 0.449 J/g°C. Specific heat capacity is an intensive property that depends only on the type of substance. It measures the heat required to raise the temperature of 1 gram of the substance by 1 degree Celsius.

For example, let's calculate the heat involved in raising the temperature of a 25.0 g iron skillet from 25°C to 250°C. Using the specific heat capacity of iron, we can calculate:

q = (0.449 J/g°C) x (25.0 g) x (250°C - 25°C) = 2491.25 J

Therefore, approximately 2491.25 joules of heat must be added to the iron skillet to increase its temperature from 25°C to 250°C.