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Physical Chemistry
Page 10
Questions (634)
At 20.0°C the vapour pressure of pure methanol is 11.8 kPa and that of pure ethanol is 5.93 kPa. A gaseous mixture of methanol
1 answer
asked by
S
735 views
How much heat (in kilojoules) is evolved or absorbed in the reaction of 3.35 of with enough carbon monoxide to produce iron
2 answers
asked by
LaK
729 views
What type of chemist would study the energies and heats involved in chemical reactions?
3 answers
asked by
Moe
712 views
Calculate the normal freezing point of an aqueous solution containing 30% w/w ethylene glycol. Thanks
2 answers
asked by
el
726 views
the boiling point increased by 2oC, what is the approximate molality of NaCl.
K boiling point(water)= 0.512oC/m
2 answers
asked by
mickey
699 views
The solubility of nitrogen in water is 6.9 x 10^-4 at exactly 1 atm pressure. What is the solubility of nitrogen under .80 atmp
2 answers
asked by
Sara
709 views
Determine the mass of a nonvolatile, nonionizing compound that must be added to 4.68 kg of water to lower the freezing point to
2 answers
asked by
renee
713 views
16.6ml of a solution is run into an empty flask. the mass of the flask is 145.0 g. the mass of the flask plus solution is 158.5
2 answers
asked by
Gabby
683 views
predict the order of increasing vapor pressure at a given temperature for the following compounds: a.ch3ch2ch2ch2oh ,
2 answers
asked by
Luisa
686 views
Will increasing the temperature of H20 before dissolving Ca(IO3)2 affect how much Ca(IO3)2 is dissolved? I think this has
2 answers
asked by
Minuet
682 views
The vapor pressure of an organic solvent is 50 mm Hg at 25°C and 200 mm Hg at 45°C. The solvent is
the only species in a closed
2 answers
asked by
Anonymous
683 views
Calculate ΔGo (in J) for 2 moles of electron(s) in each half-reaction and a standard potential of 0.44 V
1 answer
asked by
moe
686 views
WHAT IS THE FREEZING POINT OF THIS SOLUTION?
25.5g C7,H11,N,O7,S(4-nitro-2-toluenesulfonic acid dihydrate) in 1.00x10^2g
3 answers
asked by
Jose Reyes
696 views
the particles in which sample of LiCl(s) have the same average kinetic energy as the particles in a 2.0-mole sample ph H2O(l) at
1 answer
asked by
khayla
717 views
what is the freezing point depression of water, benzene, acetic acid, ethanol and clyclohexane?
2 answers
asked by
jarlyn jane ejares
669 views
Determine the boiling points of 1 m solution of suger, glucose, urea, sodium chloride, barium chloride, aluminium chloride.
4 answers
asked by
Dinesh
681 views
The boiling point of water at 735 mmHg is 99.07C. What percent by mass of NaCl should be present in a water soln to raise the
2 answers
asked by
Holly
682 views
Calculate the freezing point of 0.15 m calcium chloride aqueous solution. Assume that the molal freezing point depression
1 answer
asked by
hereyago
673 views
The enthalpy of solution of nitrous oxide (N2O) in water is -12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per
2 answers
asked by
Raoul
681 views
a neat spectrum of liquid with a boiling point of 150 degrees celcius determined using salt plates
3 answers
asked by
renee
658 views
The procedure described in this experiment was used to determine the molar mass of unknown liquid (non-electrolyte). The
1 answer
asked by
hereyago
666 views
Ethanol (C2H5OH) boils at a temperature of 78.3oC.
What amount of energy, in joules, is necessary to heat to boiling and then
2 answers
asked by
John
687 views
A 1.90-g sample of a large biomolecule was dissolved in 25.0 g of carbon tetrachloride. The boiling point of this solution was
2 answers
asked by
Tasha
668 views
water has a vapor pressure of 23.76 torr at 25C if 1.15 g H2O is enclosed in a 1.0 L container will any liquid be present if so
2 answers
asked by
Anonymous
656 views
hi guys I really need some help with my homework its so confusing here it is.
5.00g of glucose,C6H12O6, is dissolved in 500g of
1 answer
asked by
stacy
662 views
The formation of condensation on a glass of ice water causes the ice
to melt faster than it would otherwise. If 8.00 g of
2 answers
asked by
sara
664 views
what is the solubility of alum in 100 ml of water at 20 degrees celcius?
2 answers
asked by
Anonymous
641 views
At 21.0 °C, a solution of 23.71 g of a nonvolatile, nonpolar compound in 30.64 g of ethylbromide, C2H5Br, had a vapor pressure
4 answers
asked by
Luke
631 views
1) Benzene freezes at 5.45 degrees celsius. The Kf for benzene is -5.07C/m. What would be the freezing point of a 0.210m
4 answers
asked by
Hannah
656 views
0.24 grams of benzene (C6H6) is dissolved into 4.9 grams of melted biphenyl. The freezing point of the mixture was determined to
2 answers
asked by
Erin
625 views
Knowing what information would allow you to order gas molecules according to their velocity?
A. Pressure and temperature B.
1 answer
asked by
erika
644 views
What is the vapor pressure of a solution composed of 3.0 moles benzene (vapor pressure 12.1 kPa) & 1 mole chloroform (vapor
3 answers
asked by
Anonymous
637 views
When 0.354 g of an unknown nonelectrolyte compound was dissolved in 12.5 g of benzene a solution was formed that froze at 4.46
2 answers
asked by
Shines
632 views
Determine the boiling point(bp)of 0.44 m Naphthalene, C10H8, in Benzene, C6H6. kb(C6H6)=2.53, bp(C6H6)=80.1
2 answers
asked by
Shelly
641 views
The temperature at which molarity of pure water is equal to its molality
4 answers
asked by
Monika
621 views
About how much should the boiling point of pure water differ from .5m 1m and 1.5m aqueous solutions of NaCl and same molal
2 answers
asked by
bob
613 views
If Kf = 1.86C/m, how many grams of calcium chloride must be added to 1.0L of water (assume a density of 1.0 g/mL) to lower the
7 answers
asked by
Dee
613 views
five factors that affect the rate of diffusion in GASES
2 answers
asked by
fefe
624 views
what is the osmotic pressure at 20 C of a solution made by dissolving 0.69 grams of sucrose C12 H22 O11 in 100 mL of water
2 answers
asked by
briana
603 views
An aqueous solution of a non electrolyte boils at 100.32 degrees C. The expected freezing point for this solution is ______?
(Kb
2 answers
asked by
Lauren
618 views
What is the vapor pressure in Torr above a solution prepared by mixing 66.73g of benzene C6H6 with 63.26g toluene C6H5CH3 at 20
2 answers
asked by
Jude
648 views
Iodine(I2)is a solid molecular compound at room temperature. Predict its solubility in liquid water(H2O)and in liquid
2 answers
asked by
Nam Le
609 views
How many phases and components are present in a saturated solution of Na2so4 with excess of solid is present at equilibrium with
2 answers
asked by
buhle
596 views
arrange the following aqueous solutionsin order of increasing freezing points(lowest to highest temperature): 0/10m glucose,
2 answers
asked by
Jill
609 views
at 298K,the vapour of pure water is 23.76mmHg and that of dilute aqueous ultimate urea is 22.9mmHg. Estimate the molarity of the
2 answers
asked by
Novah
591 views
Calculate boiling point and freezing point of this solution which contains 5.85g of C6H12O6 in 255g H2O. pleasee
7 answers
asked by
Sheena
567 views
a volatile liquid was allowed to evaporate in a 43.298g flask that has a total volume of 252 mL.,the temperature of the water
2 answers
asked by
Ana
580 views
The lattice enthalpies of NACL KCL and AGCL are 787,717 and 916 kj/mol; based on these values , arrange them in increasing order
2 answers
asked by
Punk marley
566 views
Which of the following statements is /are true?
Answer a. None of he above. b. Impurities in a solvent raise the freezing point
2 answers
asked by
alia
605 views
The normal freeing point of cyclohexane if 6.6 degrees Celsius. A 0.2g sample of an unknown solute is dissolved in 50 ml of
4 answers
asked by
Karolina
569 views
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Parent Categories (3)
Chemistry
Science
Science/Chemistry