how many joules of heat are required to heat a 75 gram silver spoon from 20celcius to 30 celcius
To calculate the amount of heat required to heat a substance, you need to use the formula:
Q = mcΔT
where:
Q is the heat energy,
m is the mass of the substance (in grams),
c is the specific heat capacity of the substance (in J/g°C),
ΔT is the change in temperature (in °C).
First, find the specific heat capacity of silver. The specific heat capacity of silver is approximately 0.24 J/g°C.
Next, calculate the change in temperature:
ΔT = final temperature - initial temperature
ΔT = 30°C - 20°C
ΔT = 10°C
Now, we have all the information we need to calculate the amount of heat energy required:
Q = (75 g) * (0.24 J/g°C) * (10°C)
Q = 180 J
Therefore, it would take 180 joules of heat energy to heat a 75 gram silver spoon from 20°C to 30°C.