How many Joules are required to heat 2 g of
silver from 50
◦
C to 70
◦
C?
q = mass Ag x specific heat Ag x (Tfinal-Tinitial)
To determine the amount of energy required to heat a substance, we need to use the formula:
Q = mcΔT
Where:
Q = amount of heat energy (in Joules)
m = mass of the substance (in grams)
c = specific heat capacity of the substance (in J/g°C)
ΔT = change in temperature (in °C)
In this case, we are given:
m = 2 g (mass of silver)
ΔT = 70°C - 50°C = 20°C (change in temperature)
The specific heat capacity of silver is approximately 0.24 J/g°C.
Now, we can plug these values into the formula:
Q = (2 g) * (0.24 J/g°C) * (20°C)
Q = 9.6 J
Therefore, it would require 9.6 Joules of energy to heat 2 grams of silver from 50°C to 70°C.