A quantity of steam at 100oC condenses to water at the same temperature by releasing 6.9 x 104J of energy. Calculate the mass of the condensed steam. [speci...
Question 1 Report
A quantity of steam at 100oC condenses to water at the same temperature by releasing 6.9 x 104J of energy. Calculate the mass of the condensed steam. [specific latent heat of vaporization of eater = 2.3 x 106 J kg-1]
Answer Details
When steam condenses to water, it releases energy in the form of heat. The amount of heat released is given by:
heat released = mass x specific latent heat of vaporization
where the specific latent heat of vaporization of water is 2.3 x 10^6 J/kg.
In this problem, we are given that 6.9 x 10^4 J of energy is released as the steam condenses. Therefore, we can calculate the mass of the condensed steam as follows:
mass = heat released / specific latent heat of vaporization
mass = 6.9 x 10^4 J / 2.3 x 10^6 J/kg
mass = 0.03 kg
Therefore, the mass of the condensed steam is 0.03 kg. This is equivalent to 3.0 x 10^-2 kg, which is one of the options provided. Hence, the correct answer is.
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