Question

Какое количество воды можно нагреть 50 градусов теплотой, полученной при полном сгорании 10 г спирта?

Answer 1

Q=qm
Q=1,1*10³Дж
Q=cmΔt
m=Q/cΔt
m=1100/4200*50=11/2100≈0,005кг≈5г

Answer 2

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Answer 3

Calculating the Amount of Water Heated by the Energy Released from Burning 10g of Alcohol

To calculate the amount of water that can be heated by the energy released from burning 10g of alcohol, we can use the formula:

Q = cmΔT

Where: - Q is the amount of heat energy transferred - c is the specific heat capacity of water - m is the mass of water - ΔT is the change in temperature

Given: - Mass of alcohol burned (m) = 10g - Change in temperature (ΔT) = 50°C

We need to find the amount of heat energy released (Q) from burning 10g of alcohol, and then use it to calculate the amount of water that can be heated.

Calculating the Heat Energy Released from Burning 10g of Alcohol

The heat energy released from burning 10g of alcohol can be calculated using the formula:

Q = cmΔT

From the provided search results, we have the following information: - Q = Q- Q = cmt- c- m = 10g - ΔT = 50°C

Using the given information and the formula, we can calculate the heat energy released (Q) from burning 10g of alcohol.

Calculation:

- c = 4200 J/(kg·°C) (specific heat capacity of water)- m = 10g = 0.01kg - ΔT = 50°C

Plugging the values into the formula: Q = (0.01kg) * (4200 J/(kg·°C)) * (50°C) Q = 2100 J

So, the heat energy released from burning 10g of alcohol is 2100 Joules.

Calculating the Amount of Water Heated

Now, we can use the heat energy released (Q) to calculate the amount of water that can be heated.

Given: - Heat energy released (Q) = 2100 J - Specific heat capacity of water (c) = 4200 J/(kg·°C) - Change in temperature (ΔT) = 50°C

We can use the formula Q = cmΔT to calculate the mass of water that can be heated by the energy released from burning 10g of alcohol.

Calculation:

Q = cmΔT m = Q / (cΔT) m = 2100 J / (4200 J/(kg·°C) * 50°C) m ≈ 0.025 kg

So, the amount of water that can be heated by the energy released from burning 10g of alcohol to a temperature change of 50°C is approximately 25 grams.