An insulated beaker with negligible mass contains liquid water with a mass of 0.335 kg and a temperature of 69. How much ice at a temperature of -18....

An insulated beaker with negligible mass contains liquid water with a mass of 0.335 kg and a temperature of 69.1 ∘C .

How much ice at a temperature of -18.3 ∘C must be dropped into the water so that the final temperature of the system will be 29.0 ∘C ?

Take the specific heat of liquid water to be 4190 J/kg⋅K , the specific heat of ice to be 2100 J/kg⋅K , and the heat of fusion for water to be 3.34×105 J/kg .