Question
In: Chemistry
350.mg of an unknown protein are dissolved in enough solvent to make 5.00mL of solution. The...
350.mg of an unknown protein are dissolved in enough solvent to make 5.00mL of solution. The osmotic pressure of this solution is measured to be 0.296atm at 25.0°C.
Calculate the molar mass of the protein. Be sure your answer has the correct number of significant digits.
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
An unknown compound (152 mg) was dissolved in water to make 75.0 mL of solution. The...
An unknown compound (152 mg) was dissolved in water to make 75.0
mL of solution. The solution did not conduct electricity and had an
osmotic pressure of 0.328 atm at 27°C. Elemental analysis revealed
the substance to be 78.90% C, 10.59% H, and 10.51% O.
Determine the molecular formula of this compound by adding the
missing subscripts.
A 425 mg sample of a weak diprotic acid is dissolved in enough water to make...
A 425 mg sample of a weak diprotic acid is dissolved in enough
water to make 275.0 ml of solution. The pH of this solution is
3.08. A saturated solution of calcium hydroxide (Ksp=
1.3 x 10-6) is prepared by adding excess calcium
hydroxide to water and then removing the undissolved solid by
filtration. Enough of the calcium hydroxide solution is added to
the solution of the acid to reach the second equivalence point. The
pH at the second equivalence...
A 425 mg sample of a weak diprotic acid is dissolved in enough water to make...
A 425 mg sample of a weak diprotic acid is dissolved in enough
water to make 275.0 ml of solution. The pH of this solution is
3.08. A saturated solution of calcium hydroxide (Ksp= 1.3 x 10^-6) is prepared by adding excess
calcium hydroxide to water and then removing the undissolved solid
by filtration. Enough of the calcium hydroxide solution is added to
the solution of the acid to reach the second equivalence point. The
pH at the second equivalence...
An unknown nonelectrolyte and nonvolatile compound is dissolved in enough pure water to make 348ml of...
An unknown nonelectrolyte and nonvolatile compound is dissolved
in enough pure water to make 348ml of solution.The vapor pressure
above the solution drops from 198.7mbar to 196.7mbar. When 100g of
the compound is dissolved at constant temperature.Determine the
molar mass of the unknown compound. Assume no change in volume
occurs upon dissolution.
The answer is 509 g/mol Why?
If 4.90 g of Na2CO3 is dissolved in enough water to make 250. mL of solution,...
If 4.90 g of Na2CO3 is dissolved in enough
water to make 250. mL of solution, what is the molar concentration
of the sodium carbonate?
Molar concentration of Na2CO3 =
______M
What are the molar concentrations of the Na+ and
CO32- ions?
Molar concentration of Na+ = ______M
Molar concentration of CO32- =
_______M
1. A solution that has a relatively large quantity of solute dissolved in the solvent in:
1. A solution that has a relatively large quantity of solute dissolved in the solvent in:
a) Homogenous
b) Dilute
c) Concentrated
d) Saturated
2. The concentration of flouride ions in municipal drinking water cannot exceed 1.5 ppm. What is the maximum mass of flouride ions that can be dissolved in 500 mL of water?
a) 3.0 mg
b) 0.003 mg
c) 750 mg
d) 1.5 mg
e) 0.75 mg
3. As the temperature of a solution increases, the solubility...
1. A solution that has a relatively large quantity of solute dissolved in the solvent in:
1. A solution that has a relatively large quantity of solute dissolved in the solvent in:
a) Homogenous
b) Dilute
c) Concentrated
d) Saturated
2. The concentration of flouride ions in municipal drinking water cannot exceed 1.5 ppm. What is the maximum mass of flouride ions that can be dissolved in 500 mL of water?
a) 3.0 mg
b) 0.003 mg
c) 750 mg
d) 1.5 mg
e) 0.75 mg
3. As the temperature of a solution increases, the solubility...
Calculate the amount of calcium carbonate (mg) not in solution if a tablet is dissolved in...
Calculate the amount of calcium carbonate (mg) not in solution
if a tablet is dissolved in 250 mL of water and the tablet's label
claim is 600 mg/tablet. That source of calcium in the tablet is
calcium carbonate.
Enough of a monoprotic acid is dissolved in water to produce a 0.0175 M solution. The...
Enough of a monoprotic acid is dissolved in water to produce a
0.0175 M solution. The pH of the resulting solution is 2.35.
Calculate the Ka for the acid.
Enough of a monoprotic acid is dissolved in water to produce a 0.0129 M solution. The...
Enough of a monoprotic acid is dissolved in water to produce a
0.0129 M solution. The pH of the resulting solution is 2.69.
Calculate the Ka for the acid.
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