The total amount of heat is the sum of heat necessary to heat the block of ice to melting point ("0[^\\circ {\\rm{C]}}") and heat necessary to melt this block of ice
where "c \\approx 2100[\\frac{{\\rm{J}}}{{{\\rm{kg}} \\cdot {\\rm{^\\circ C}}}}]" is the specific heat capacity of ice (we neglecting its temperature dependence) and "\\lambda \\approx 330 \\cdot {10^3}[\\frac{{\\rm{J}}}{{{\\rm{kg}}}}]" is the heat of fusion of ice. Now let's perform calculations
This is the answer.
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