Question

Какое количество теплоты выделится при полном сгорании 100 кг карагандинского угля?

Answer 1

c сгорания угля=27000000 Дж/кг 

 

значит количество теплоты: 27 000 000*100=27*10 в 8 степени Дж

Answer 2

Calculating Heat Release from Combustion of Karaganda Coal

To calculate the amount of heat released from the complete combustion of 100 kg of Karaganda coal, we can use the formula:

Q = qm

Where: - Q = amount of heat released - q = heat of combustion per unit mass of the fuel - m = mass of the fuel

Using the provided information, we can calculate the heat release.

Given: - m = 100 kg

We need to find the value of q to calculate Q.

From the search results, we find that the heat of combustion per unit mass of Karaganda coal is approximately 35 MJ/kg.

Using the formula, we can calculate the amount of heat released:

Q = qm Q = 35 MJ/kg * 100 kg Q = 3500 MJ

Therefore, the amount of heat released from the complete combustion of 100 kg of Karaganda coal is approximately 3500 megajoules (MJ).