Question

Определите количество теплоты,которую необходимо предоставить 0, 5 кг жидкости чтобы полностью ее испарить,если жидкость-вода

Answer 1

Q= mL= 0,5×2,3×10^6=1,15×10^6= 1,15 MДж

Answer 2

Calculating Heat Required to Vaporize Water

To calculate the heat required to vaporize 0.5 kg of water, we can use the formula:

Q = m * L

Where: - Q = heat required - m = mass of the substance - L = latent heat of vaporization

For water, the latent heat of vaporization is approximately 2260 kJ/kg.

Using the given mass of 0.5 kg, we can calculate the heat required:

Q = 0.5 kg * 2260 kJ/kg = 1130 kJ

Therefore, it would require approximately 1130 kJ of heat to completely vaporize 0.5 kg of water.

This calculation is based on the standard latent heat of vaporization for water and assumes standard atmospheric pressure.