Determine the quality/moisture of the vapor/water mixture

[Krokodrile]

Homework Statement

1.- A 20 L container without air contains 5 kg of pure water at 250 Celcius. Determines the mass and volume of the liquid water as well as the quality and moisture.

2.-An 80% quality saturated water vapor mixture has a temperature of 210 Celsius. Determine the pressure, the specific volume of the mixture as well as the specific energy of the mixture

Relevant Equations

X = v - vf/vg - vf
v = V/m
x = mg / n
Vg = mg (vg)

Hello! ;)
I need help with two problems.

I ready resolve it, but i have a question about if a use the units of the correct way. Because got a little strange results.

 

[Borek]

No idea what you mean by "quality" and your symbols are a bit cryptic. Please elaborate.

 

[Krokodrile]

No idea what you mean by "quality" and your symbols are a bit cryptic. Please elaborate.

Quality: mass fraction of vapor in a liquid/vapor mixture
vf = specific volume of steam
vg = specific volume of liquid
x = quality

 

[mjc123]

vf = specific volume of steam
vg = specific volume of liquid

Looks like it's the other way round, looking at the numbers.

 

[Krokodrile]

Looks like it's the other way round, looking at the numbers.

vf = specific volume of liquid
vg = specific volume of steam

so, sorry. Yep, my mistake