Предмет: Химия, автор: miltonlera5

можно ответ по физике не понимаю
Задача №5
≈216°С
Объяснение:
Дано:
железо
m=67г=0,067кг
t₂=21°C
Q=6кДж=6000Дж
c=460Дж/(кг °С)
Найти: t₁-?
Решение.
Количество выделившейся теплоты при охлаждении находится по формуле
Q=cm(t₁-t₂)
Отсюда находим начальную температуру


Подставляем значения и вычисляем​

Ответы

Автор ответа: gubarevgrigorij0
1

Ответ:

216°с

Объяснение:

формула нахождения дельта t

теплоту то есть 6.000 Дж, делим на произведение массы (0.067кг) и удельной теплоемкости (460)

1. 0.067 * 460 = 30,82

2. 6000 : 30,83 = 194.678780013

дальше к этому значению прибавляем 21

3. 194.678780013 + 21 = 216

получается 215 но мы округляем в большую сторону

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