how much heat in joules is required to melt an ice cube with a mass of 18.6 g at 0 °c? the lf for water is 333 j/g.

The heat energy required, Q = 6193.8 J

Explanation:

Given,

The mass of ice cube, m = 18.6 g

The heat of fusion of ice, ΔHₓ = 333 J/g

The heat energy of a substance is equal to the product of the mass and heat of fusion of that substance. It is given by the equation,

                                Q = m · ΔHₓ     joules

Substituting the given values in the above equation

                                Q = 18.6 g x 333 J/g

                                    = 6193.8 J

Hence, the heat required to melt the ice cube is, Q = 6193.8 J

the answer is a. hope this .

false.

explanation:

this statement is false. after falling for 5 seconds, its speed will not be 100 m/s.