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Estimate the molecular weight of a polymer if a 100.-mL solution of 6.5 g of the polymer in toluene has an osmotic pressure of 0.044 atm at 27°C.
62,000
45,000
22,000
5500
36,000
Uric acid dissociates as shown in the figure at the right with a pKa of 5.80, and can be treated as a simple monoprotic acid in this pH range.
A 27.0-g sample of water at 270. K is mixed with 49.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Calculate the volume of chlorine gas in liters, measured at 20 C and 762 mm Hg, required to react with this volume of seawater.
show the flow of electrons and predict which resonance structure is the major contributor
Draw Fischer projection formulas of the major product of the reaction between E-2-methyl-3-hexene and aqueous Br2.
A sample of 54.7 g of HCl gas is dissolved to make 1L of solution. What is the molarity of the solution?
A gas-filled balloon having a volume of 6.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 10-3 atm, respectively. Calculate the final v..
Calculate the density in kg/m3 using (a) the ideal gas equation of state and (b) the compressibility factor equation of state in conjunction with the law of corresponding states.
Solution A is 2.00 L of a 2.00 M aqueous solution of copper(II) nitrate. Solution B is 2.00 L of a 3.00 M aqueous solution of potassium hydroxide. React the two solutions. Determine the concentrations of all ions left in solution (from part a) and..
A sample obtained from that mixture containing 443900 particles weighs 10.0g. Determine the number and percent relative standard deviation of NaCN particels from a sample of the mixture weighing 7.16g.
When 30 mL of a 365 mL stock solution containing 1.8999999999999997 M AlCl3 is diluted to 81 mL, how many moles of Cl- are in the new solution?
Hemoglobin has a mass of about 67,000 g/mol. It is 0.3335% iron by mass. How many iron atoms are in a molecule of hemoglobin?
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