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Physical Chemistry
Page 4
Questions (634)
camphor melts at 179.8 degrees, and it has a particularly high freezing point depression constant.(kf=40 degrees/m). when 0.186g
6 answers
asked by
lucylu
3,581 views
When 15.0 g of ethyl alcohol, C2H5OH, is dissolved in 750 g of formic acid, the freezing point of the solution is 7.20 C. The
4 answers
asked by
bree
1,443 views
Why is the boiling point of HCL gas (permanent dipole-dipole interactions) lower than that of CO2 gas(temporary dipole-dipole
3 answers
asked by
Olympia Xavier
679 views
Molecular Mass by Freezing point Depression (Preliminary Lab)
The following errors occurred when the above experiment was carried
3 answers
asked by
chuchuchulu
2,109 views
How much heat (in kJ}) is required to vaporize it? (Assume a density of 1.00 g/mL )
I have this 60.0ML/ 1.00 g/ml = 60grams
2 answers
asked by
Creative9k
909 views
The "proof" of an alcoholic beverage is twice the volume percent of ethanol, C2H5OH, in water. The density of ethanol is
3 answers
asked by
alicia
1,092 views
explain why the pure solvent shows a level horizontal curve as solidification occurs, but the curve for the solution slopes
4 answers
asked by
christianne
1,477 views
Describe an experiment you could do to test the strength of intermolecular forces using melting point. Be detailed about how you
3 answers
asked by
cynco
147 views
Calculate the solubility (in M units) of ammonia gas in water at 298 K
and a partial pressure of 5.00 bar. The Henry’s law
3 answers
asked by
Anonymous
1,506 views
Define intermolecular forces of attraction.
3 answers
asked by
pilam
345 views
At what temperature does benzene boil when the external pressure is 440 torr ?
2 answers
asked by
aliza
980 views
The vapor pressure of liquid bromine at room temp is 168 torr. If the bromine is introduced drop by drop into a closed system
3 answers
asked by
Joseph
1,599 views
What is the osmotic pressure of a solution prepared by dissolving 5.50 g of CaCl2 in enough water to make 420. mL of solution at
4 answers
asked by
lily
630 views
The solubility of a substance can be expressed qualitatively and quantitatively. Use examples to explain this statement for
3 answers
asked by
Miss K
712 views
Calculate % of lowering of vapour pressure if 36 g glucose is added in 312g of benzene
4 answers
asked by
Kevin
552 views
Explain why the surface tension of water is greater than that of methylated spirit?
4 answers
asked by
lesego mosweu
461 views
Antifreeze is made by mixing equal volumes of ethylene glycol (d=1.114 g/mL) and water. The resulting solution has a density of
2 answers
asked by
Anonymous
700 views
The diffusion constant for the alcohol ethanol in water is 1.24x10^-9 m2/s. A cylinder has a cross-sectional area of 4.10 cm^2
4 answers
asked by
BlubBlub
1,031 views
A container with a one-liter capacity at 27 degree C is filled with helium to a pressure of 2 atm. how many moles of helium does
3 answers
asked by
eddy
692 views
The freezing point of pure cyclohexane is 6.60°C and the freezing point depression constant is 20.00°C/m. The freezing point
4 answers
asked by
Anonymous
1,296 views
If you place 10.0 L of propanol (C3H8O) in a sealed room that is 3 m long, 2.75 m wide, and 2.5 m high, will all the propanol
3 answers
asked by
chris
875 views
calculate the boiling point of water if the atmospheric is 630 mm hg
4 answers
asked by
maryjohn
1,573 views
A 0.5 molal urea solution causes freezing point depression of two degrees .what is the molal delression constant ????
4 answers
asked by
Prithvi
1,040 views
what is the boiling point of 0.212 m lactose in water?
3 answers
asked by
courtney
1,284 views
calculate the freezing point of an aqueous solution of 15.5 grams of glucose dissolved in 150 grams of water
3 answers
asked by
Sara
1,303 views
Lowering of vapor pressure is directly proportional to:
a) Temperature b) Mole fraction of Solute c) Mole fraction of Solvent d)
3 answers
asked by
Riana
707 views
A solution is made by dissolving 0.698 mol of nonelectrolyte solute in 777 g of benzene. Calculate the freezing point and
3 answers
asked by
Shardai
657 views
The solubility of a compound in water is 6.8g/100ml at 0.33g/100ml at 25 degree celsius. Calculate the amount of water required
4 answers
asked by
VICKI
641 views
A saturated solution of kno3 at 70°c is cooled to 10°c. What mass of a solid of precipitate out of solution.
4 answers
asked by
Riana
1,773 views
the addition of 50 g of salt to a sample of pure water causes its freezing point to be reduced from 0.0 degrees Celsius to -3.15
5 answers
asked by
randomchik
551 views
make a statement relating hydrogen ion concentration to the acidity and basicity of solutions
3 answers
asked by
Alex
1,033 views
I don't know how to answer this. An aqueous solution of glucose has a freezing point of -0.37. What is the concentration of the
4 answers
asked by
Camela
872 views
At 20 °C, chloroform (CHCl3) has a density of 1.489 g/mL. What is the mass of 7.52 mL of chloroform at 20°C?
3 answers
asked by
katie
1,871 views
The vapor pressure of pure water at 25 degrees Celsius is 23.77 mm Hg. What is the vapor pressure, in mm Hg, of water above a
5 answers
asked by
Anonymous
1,478 views
In an organic chemistry lab, why is the organic layer usually the upper layer in the separatory funnel while the aqueous layer
2 answers
asked by
Rachel
645 views
Use a temperature - composition diagram to explain why fractional distillation of two components is more easil?
easily
3 answers
asked by
laura
1,153 views
how do you find the boiling temp of 2m of c6h12o6
3 answers
asked by
Alex
738 views
could freezing point depression be used for substances not soluble in water?
3 answers
asked by
Anonymous
550 views
What is the relationship between delta T and molar mass of solute?
The larger the value of delta T, the (larger,smaller) the
4 answers
asked by
G
2,381 views
What would happen to the caffeine if the sublimation step were performed at atmospheric pressure?
4 answers
asked by
Tammy
1,338 views
The vapor pressure of pure ethanol at 20 degrees C is 44 mmHg, and the vapor pressure of pure methanol at the same temperature
4 answers
asked by
Stephany
1,689 views
Determine the density of chlorine gas at 22C and 1.00 atm pressure.
3 answers
asked by
Anonymous
796 views
A 0.750 g sample of an unknown substance is dissolved in 20.0 g of benzene, C6H6. The freezing point of the solution is 4.53 oC.
3 answers
asked by
CC
1,255 views
Acrylonitrile and ethyl acetate have the same boiling point: 77.2ºC. In one to two sentences, explain what outcome you would
3 answers
asked by
ALL ANSWER
51 views
What is the vapor pressure of ethanol at 13 C?
4 answers
asked by
gnozahs
2,352 views
intermolecular forces
Rank the following substance from highest melting point to lowest melting point. My teacher gave a list of
3 answers
asked by
jen
1,414 views
What is the total vapor pressure of NaCl solution at 25C with mole fraction of 0.01? (X_NaCl = 0.01)
Thanks!!
5 answers
asked by
Andrew
470 views
Calculate the % empty space in 1 mole of water at 25 degree C (d=0.9971g/ml). The volume of a water molecule can be taken as the
3 answers
asked by
christy
676 views
the complex ion[Ti(H2O)6]^3+ has a maximum absorption wavelength of 512 nm. Calculate the energy change in joules per ion.
3 answers
asked by
kelsie
673 views
What is the boiling point of an aqueous solution of a non electrolyte that has an osmotic pressure of 10.50atm at 25 degrees C?
4 answers
asked by
Ken
1,498 views
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Parent Categories (3)
Chemistry
Science
Science/Chemistry