Answer : The amount of heat required is, (C) [tex]6.68\times 10^6J[/tex]
Explanation :
Formula used :
[tex]q=L\times m[/tex]
where,
q = heat required = ?
L = latent heat of fusion of ice = [tex]3.34\times 10^5J/kg[/tex]
m = mass of ice = 20.0 kg
Now put all the given values in the above formula, we get:
[tex]q=(3.34\times 10^5J/kg)\times (20.0kg)[/tex]
[tex]q=6.68\times 10^6J[/tex]
Therefore, the amount of heat required is, [tex]6.68\times 10^6J[/tex]