Answer : The amount of energy needed is, 419.76 J and the energy is absorbed.
Solution :
Formula used :
[tex]Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})[/tex]
where,
Q = heat gained or absorbed = ?
m = mass of nickel = 95.4 g
c = specific heat of nickel = [tex]0.44J/g^oC[/tex]
[tex]\Delta T=\text{Change in temperature}[/tex]
[tex]T_{final}[/tex] = final temperature = [tex]32^oC[/tex]
[tex]T_{initial}[/tex] = initial temperature = [tex]22^oC[/tex]
Now put all the given values in the above formula, we get
[tex]Q=95.4g\times 0.44J/g^oC\times (32-22)^oC[/tex]
[tex]Q=419.76J[/tex]
The value of Q is positive that means energy is absorbed.
Therefore, the amount of energy needed is, 419.76 J and the energy is absorbed.
