Question

Помогите пожалуйста,умоляю!!!до завтра уже надоо Сколько керосина надо сжечь,чтобы нагреть 5 кг воды на 56 гадусов?Считать,что вся энергия,выделенная при сгорании керосина,идет на нагревание воды. Умоляююююю!!!?!!!!!!!!!!! 37 баллов!!!!

Answer 1

Q=qm
Q=5*4200=21 000;

Answer 2

фиг его знает)))))))) это какой предмет?

Answer 3

Calculation of Energy Required to Heat Water

To calculate the amount of kerosene required to heat 5 kg of water to 56 degrees Celsius, we need to consider the specific heat capacity of water and the energy released during the combustion of kerosene.

The specific heat capacity of water is approximately 4.186 joules per gram per degree Celsius (J/g°C) This means that it takes 4.186 joules of energy to raise the temperature of 1 gram of water by 1 degree Celsius.

To calculate the total energy required to heat 5 kg (5000 grams) of water from an initial temperature to a final temperature, we can use the following formula:

Energy = mass × specific heat capacity × temperature change

In this case, the mass is 5000 grams, the specific heat capacity is 4.186 J/g°C, and the temperature change is from the initial temperature to 56 degrees Celsius.

Let's calculate the energy required:

Energy = 5000 g × 4.186 J/g°C × (56°C - initial temperature)

To proceed with the calculation, we need to know the initial temperature of the water. Please provide the initial temperature so that we can complete the calculation for you.