How much heat is necessary to change 5 grams of water at 10 degrees celcius to water at 70 degrees celcius?
To calculate the amount of heat required to change the temperature of a substance, you need to use the specific heat capacity formula:
Q = m * c * ΔT
where:
Q = heat energy
m = mass of the substance (in grams)
c = specific heat capacity of the substance
ΔT = change in temperature (final temperature - initial temperature)
For water, the specific heat capacity is 4.184 J/g°C.
Given:
m = 5 grams
c = 4.184 J/g°C
ΔT = 70°C - 10°C = 60°C
Substituting these values into the formula, we have:
Q = 5g * 4.184 J/g°C * 60°C
= 1255.2 J
Therefore, it would require 1255.2 Joules of heat energy to change 5 grams of water at 10°C to water at 70°C.