Предмет: Физика, автор: ciprovske07

1.25 Какое количество теплоты необходимо, чтобы нагреть 5 КГ Льда от -20 до -12 °С? ​

Мартын05: Q=mC(T2-T1), найди теплоёмкость льда С в справочнике и подставь в эту формулу.

Ответы

Автор ответа: Olaanna
1

Ответ:

Q = 84 кДж

Объяснение:

Q = cmΔt

c = 2100 Дж/кг*°С

m = 5 кг

Δt = 8 °С

Q = 2100*5*8 = 84000 Дж = 84 кДж

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