Answer:
0.4429 m
Explanation:
Given that mass % of the ethanol in water = 2%
This means that 2 g of ethanol present in 100 g of ethanol solution.
Molality is defined as the moles of the solute present in 1 kilogram of the solvent.
Given that:
Mass of = 2 g
Molar mass of = 46.07 g/mol
The formula for the calculation of moles is shown below:
Thus,
Mass of water = 100 - 2 g = 98 g = 0.098 kg ( 1 g = 0.001 kg )
So, molality is:
<u>Molality = 0.4429 m</u>
Answer:
The value of final volume inside the vessel = 5.17 ml
Explanation:
Initial pressure = 6263 mm Hg = 8.24 atm = 835 K pa
Initial temperature = 50.1 ° c = 323.1 K
Initial volume = 461.1 ml = 0.0004611
Final temperature = - 95.8 ° c = 177.2 K
Finial pressure = 411 atm = 41644.6 K PA
We know that
Put all the values in the above equation
⇒ 835 × = 41644.6 ×
⇒ = 5.07 ×
⇒ = 5.17 ml
This is the value of final volume inside the vessel.