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The osmotic pressure of a fraction of poly(vinyl chloride) in a ketone solvent was measured at 25°C. The density of the solvent (which is virtually equal to the density of the solution) was 0.798 g cm-3. Calculate the molar mass and the osmotic virial coefficient, B, of the fraction from the following data:
c/(g /102cm3)
0.200
0.400
0.600
0.088
1.000
h/cm
0.48
1.2
1.86
2.76
3.88
canadian 10cent and 25cent coins are made of pure nickelwhich has a density of 8.902 gcm3. suppose each dimeweighs 2.14
Calculate the molarity of sodium ions in a solution made by diluting 50.0 mL of 0.874 M sodium sulfide solution to a total volume of 250.0 mL
Problem- The equation of line determined from a Beer's Law plot is y = 0.195x + 0.4. What is the resistance of an unknown water sample if the assumed concentration is 1.8ppm
Identify the species that is oxidized and the species that is reduced in each reaction.Write out two half reaction to show how many electrons are gained or lost by each species.
a 35 mL sample of NaOH solution is titrated to an endpoint by 14.76 mL 0.4122M HBr solutio. what is the molarity of the NaOH solution?
a gas cylinder witha volume of 3.00 dm^3 contains 8.00 moles of oxygen gas at a temperature of 50.0k. what is the pressure inside the cylinder.
Problem- The freezing point of 0.0830 m aqueous acetic acid is -0.159?C. Acetic acid, HC2H3O2, is partially dissociated according to the equation: HC2H3O2 (aq) H^+^ (aq) +C2H3O2^-^ (aq). Calculate the percentage of HC2H3O2 molecules that are diss..
for a hydrohalogenatoin reaction if you use br is it calles hydrobromination? or if you use cl is it hydrochlorination?
In what situations would you utilizing NaH as a base and in what situations would you use NaOH as a base in the preparation of the alkoxide ion by reaction of an alcohol with a strong base
A 22.0 mL sample of vinegar, which is an aqueous solution of acetic acid, HC2H3O2 , requires 24.5 mL of 0.450 M NaOH to reach the endpoint in a titration. What is the molarity of the acetic acid solution
Describe the preparation of 1 liter of a 0.75M acetate buffer, pH 4.50, starting from a 1.50 M solution of acetic acid and solid KOH pellets, M.W.=56 (pKa=4.75)
Calculate the osmolarity of this solution. my answer is 0.499 osm. Is that correct? 2*(.1249) + 1 (.2499)
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