Question

Помогите SOS..Какое количество теплоты выделяется при сгорании 400 см³ сухих дров плотностью 0,8 г/см³ если удельная теплота сгорания топлива равна 1,6*10в седьмой степени Дж/кг...Умоляю, может вы знаете как??

Answer 1

Q=qm
m=плотность дров * V
теперь переведи в систему СИ и подставь

Answer 2

Calculation of Heat Released during Combustion

To calculate the amount of heat released during the combustion of 400 cm³ of dry wood with a density of 0.8 g/cm³ and a specific heat of combustion of 1.6 * 10^7 J/kg, we can use the following steps:

1. Calculate the mass of the wood: - Mass = Volume * Density = 400 cm³ * 0.8 g/cm³ = 320 g.

2. Calculate the heat released during combustion: - Heat Released = Mass * Specific Heat of Combustion - Heat Released = 320 g * 1.6 * 10^7 J/kg = 5.12 * 10^9 J.

Therefore, the amount of heat released during the combustion of 400 cm³ of dry wood with a density of 0.8 g/cm³ and a specific heat of combustion of 1.6 * 10^7 J/kg is 5.12 * 10^9 J.

I hope this helps! Let me know if you have any further questions.