How Much Heat Is Required to Vaporize Water in Homework Problem 2.9?

AI Thread Summary
To solve the homework problem, the work done by the gas during the vaporization of water is calculated to be 533.81 J. For the second part, the heat added to the water can be determined using the equation Q = mass * Lv, where Lv is the latent heat of vaporization. The mass of the water can be found using its density of 1000 kg/m3. By calculating the volume of water in cubic meters and multiplying by the density, the mass can be determined to find the total heat added. Understanding these calculations is crucial for accurately solving the problem.
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Homework Statement

2.9 cm3 of water is boiled at atmospheric
pressure to become 5271.2 cm3 of steam, also
at atmospheric pressure.
Calculate the work done by the gas during
this process. The latent heat of vaporization
of water is 2.26 × 106 J/kg .
Answer in units of J.
(part 2) Find the amount of heat added to the water
to accomplish this process.
Answer in units of J.



Homework Equations

W= pV, Q=mLv




The Attempt at a Solution

Ok SO the awnser to the first part is 533.81 J. What I don't understand is the second part. The equation that I think I use is Q=mass * Lv...but I don't know my mass...
 
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At atmospheric pressure, water has a density of 1000 kg/m3.
 

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