Calculate the energy required to raise the temperature of 150.0 g Ag from 273 K to 291 K.
To calculate the energy required to raise the temperature of a substance, we can use the formula:
Q = m * C * ΔT
Where:
Q is the energy required (in Joules),
m is the mass of the substance (in grams),
C is the specific heat capacity of the substance (in J/g·K), and
ΔT is the change in temperature (in Kelvin).
In this case, we are given:
m = 150.0 g
ΔT = 291 K - 273 K = 18 K
To find the specific heat capacity (C) for silver (Ag), we can refer to a reliable source such as a physics or chemistry textbook. The specific heat capacity for silver is approximately 0.235 J/g·K.
Now, substituting the values into the formula:
Q = 150.0 g * 0.235 J/g·K * 18 K
Calculating Q:
Q = 632.1 J
Therefore, the energy required to raise the temperature of 150.0 g of silver from 273 K to 291 K is 632.1 Joules.