Question

Вода объёмом 3 Л налита В сосуд имеет температуру 10 градусов Цельсия. а) Определите массу воды(p=1000 кг/м)б) Определите какое количество теплоты необходимо чтобы нагреть воду до температуры кипения( с=4200 Дж/(кг*⁰С))с)Вычислите Какое количество теплоты необходимо чтобы воду превратить в пар(r=2,3*10⁶ Дж/кг)d) Вычислите общее количество теплоты которое было затраченоЯ ВЕРЮ ЧТО ВЫ МНЕ ДАДИТЕ ПРАВИЛЬНЫЙ ОТВЕТ​

Answer 1

Объяснение:

помоглалалаьатмтмтсьвжжыыж

Answer 2

Calculation of Water Mass

To determine the mass of water, we can use the formula:

mass = density x volume

Given that the density of water is 1000 kg/m³ and the volume is 3 L (or 0.003 m³), we can calculate the mass as follows:

mass = 1000 kg/m³ x 0.003 m³

Calculating this, we find that the mass of water is 3 kg.

Calculation of Heat Required to Heat Water to Boiling Temperature

To calculate the amount of heat required to heat the water from 10°C to its boiling temperature, we can use the formula:

heat = mass x specific heat capacity x change in temperature

Given that the specific heat capacity of water is 4200 J/(kg·°C), the mass is 3 kg, and the change in temperature is the difference between the boiling temperature and the initial temperature (100°C - 10°C), we can calculate the heat as follows:

heat = 3 kg x 4200 J/(kg·°C) x (100°C - 10°C)

Calculating this, we find that the amount of heat required to heat the water to its boiling temperature is 1,134,000 J or 1.134 MJ.

Calculation of Heat Required to Convert Water to Steam

To calculate the amount of heat required to convert water to steam, we can use the formula:

heat = mass x latent heat of vaporization

Given that the mass is 3 kg and the latent heat of vaporization of water is 2.3 x 10⁶ J/kg, we can calculate the heat as follows:

heat = 3 kg x 2.3 x 10⁶ J/kg

Calculating this, we find that the amount of heat required to convert the water to steam is 6.9 x 10⁶ J or 6.9 MJ.

Calculation of Total Heat Required

To calculate the total amount of heat that was expended, we need to sum the heat required to heat the water to its boiling temperature and the heat required to convert the water to steam.

Total heat = heat required to heat water + heat required to convert water to steam

Substituting the values we calculated earlier:

Total heat = 1.134 MJ + 6.9 MJ

Calculating this, we find that the total amount of heat required is 8.034 MJ.