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15.0 grams of an unknown sugar was dissolved in water and the final volume of the solution was brought up to 1.00 L. The osmotic pressure of this solution was determined to be 2.44 atm at 25°C. Which of the sugars below was most likely the unknown sugar?
A. none of these
B. glucose (C6H12O6)
C. sucrose (C12H22O11)
D. ribose (C5H10O5)
At what wavenumber would you expect to see an absorbance in the IR if your sample contained water as an impurity?
What is the percent ionization of a solution made by adding 6.00 grams of CH3COOH to 100 g of water (Kb = 0.512 ?C/m) if the boiling point of the solution is 100.712 ?C? Answer in units of %.
Given that the nuclidic masses of 238U = 238.0508 amu and an a particle = 4.0026 amu, calculate the mass of 234Th in units of g/mol.
Balance the chemical equation when aqueous ammonium phosphate and aqueous calcium choloride are mixed. What is the sum of the coefficeints?
The daily dose of ampicillin for the treatment of an ear infection is 115 mg/kg of body weight. What is the daily dose for a 34-lb child?
If 358 mL of H2SO4 is neutralized with 60.0 mL of 1.50 M NaOH, what is the initial concentration of the acid?
Assume the density of the vinegar solution is 1.00 g/mL and 5.00% by mass acetic acid. Determine the volume of vinegar that can be neutralized with 25.0 mL of 0.100 M NaOH.
If 85.0 of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 p.m. ?
sample of carbon monoxide gas occupies a volume of 0.225 L. The gas is transferred to a 1.50-L flask and the temperature is reduced to -15 degrees C. What is the pressure of the gas in the flask?
how many grams of Cu2S could be produced if 100.0g of copper is heated with 50.0g of sulfur? what is the amount of excess reactant?
Describe how this observation is consistent with the law of conservation of charge.
although even more strained than cyclopro-panone, is nevertheless quite stable and can even be distilled. Explain, taking the polarity of the carbonyl group into account.
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