Pieces of melting ice are thrown into the calorimeter with water. At some point, the pieces of ice stop melting.

Pieces of melting ice are thrown into the calorimeter with water. At some point, the pieces of ice stop melting. The initial water temperature is 20 ° C. How much has the mass of water increased?

To find the value of the increase in the mass of water, we will use the ratio: ml / mw = Sv * (tn – 0) / λl.

Data: St. – beats. heat capacity of water (Sv = 4.2 * 10 ^ 3 J / (kg * ºС)); tн – initial temperature (tн = 20 ºС); λl – beats heat of melting of ice (λl = 340 * 10 ^ 3 J / kg).

Calculation: mn / (mk – mn) = (Sv * (tn – 0)) / λl = (4.2 * 10 ^ 3 * (20 – 0)) / 340 * 10 ^ 3 = 0.247 ≈ 0.25 or 25%.

Answer: The mass of water has increased by 25%.