Answer:
The vapor pressure = 345.8 torr
Explanation:
Step 1: Data given
Number of molesof a non-volatile solute = 0.500 moles
mass of hexane = 275 grams
Molar mass of hexane = 86.18 g/mol
Temperature =49.6 °C
P°(hexane) = 400.0 torr at 49.6°C.
Step 2: Calculate moles solvent
moles of solvent = 275 grams / 86.18 g/mol = 3.19 mol
Mol fraction of the solvent = 3.19 moles / (0.500 + 3.19) = 0.8645
Step 3: Calculate the vapor pressure
P = P° * Xsolvent
⇒ with Xsolvent = mol fraction of the solvent = 0.8645
⇒ with P° hexane =400.0 torr
P = 400.0 * 0.8645 = 345.8 torr
The vapor pressure = 345.8 torr
I need an island six, 644 kg I was completely liner
Answer:
C
Explanation:
The cold doesn't mean water (A), the age of the desert doesn't mean much in this context (B), that doesn't make any sense (D), but the desert being an ocean in the past does explain where the fossil came from because the organism would have been in the area before death.
Wavelength decreases as frequency increases.
Imagine a heart rate graph. As the heart beats faster, frequency increases and the time between heartbeats decreases (wavelength).
Make sense that way?
Answer:
P = 0.75 atm
Explanation:
Using Boyle's law
Given ,
<u>For Bulb A</u>
Pressure = 190 torr
The conversion of P(torr) to P(atm) is shown below:
So,
Pressure = 190 / 760 atm = 0.25 atm
Volume = 200 mL
For Bulb B
Pressure = 1 atm
Volume = 400 mL
For Bulb C
Volume = 1.00 L = 1000 mL
Pressure = 75.994 kPa
The expression for the conversion of pressure in KiloPascal to pressure in atm is shown below:
P (kPa) = P (atm)
75.994 kPa = atm
Pressure = 0.75 atm
Also, Total volume, V = 200 + 400 + 1000 mL = 1600 mL
Using above equation as:
We get, Total pressure, P = 0.75 atm