Question

Помогите пожалуйста физика 8 класс задача даю 53 балла!Определи массу испарившейся водыВ калориметр опускают цинковый цилиндр массой 0,4 кг, в котором находится вода при температуре кипения 100 °С. Температура цинкового цилиндра равна 558 °С. Определи массу испарившейся воды. (Удельная теплота парообразования воды L=2260000 Дж/кг, удельная теплоёмкость цинкового цилиндра c=400 Дж/кг·°С). Ответ (округли до целого числа): … г.Выполнить решение задач с полным оформление: условие, что найти, решение (формулы, которые применяются и числовые расчеты).

Answer 1

Ответ:30 г

Объяснение: фото

Answer 2

Problem Statement:

We are given a calorimeter containing water at its boiling point of 100°C. A zinc cylinder with a mass of 0.4 kg is placed in the calorimeter, and its temperature is measured to be 558°C. We need to determine the mass of the evaporated water. The specific heat capacity of the zinc cylinder is 400 J/(kg·°C), and the specific latent heat of vaporization of water is 2,260,000 J/kg.

Solution:

To solve this problem, we can use the principle of energy conservation. The heat gained by the zinc cylinder is equal to the heat lost by the water that evaporates.

Let's denote the mass of the evaporated water as m (in kg).

The heat gained by the zinc cylinder can be calculated using the formula:

Q1 = m × c × ΔT1

where: - Q1 is the heat gained by the zinc cylinder (in J), - c is the specific heat capacity of the zinc cylinder (in J/(kg·°C)), - ΔT1 is the change in temperature of the zinc cylinder (in °C).

The heat lost by the water can be calculated using the formula:

Q2 = m × L

where: - Q2 is the heat lost by the water (in J), - L is the specific latent heat of vaporization of water (in J/kg).

Since the heat gained by the zinc cylinder is equal to the heat lost by the water, we can set up the equation:

Q1 = Q2

Substituting the formulas for Q1 and