Respuesta :
Answer : The amount of energy needed are, 464.1 J and the value is positive that means 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 = energy gained or absorbed = ?
m = mass of zinc = 34 g
c = specific heat of zinc = [tex]0.39J/g^oC[/tex]
[tex]\Delta T=\text{Change in temperature}[/tex]
[tex]T_{final}[/tex] = final temperature = [tex]57^oC[/tex]
[tex]T_{initial}[/tex] = initial temperature = [tex]22^oC[/tex]
Now put all the given values in the above formula, we get the energy gained or absorbed.
[tex]Q=34g\times 0.39J/g^oC\times (57-22)^oC[/tex]
[tex]Q=464.1J[/tex]
Therefore, the amount of energy needed are, 464.1 J and the value is positive that means the energy is absorbed.
