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Question- When 2.75 of a nonelectroylte solute is dissolved in water to make 765 mL of solution at 29 Celsius the solution exerts an osmotic pressure of 959 torr. How many moles of solute are in the solution?
Rework your solution from the beginning and check each step carefully.
Explain the record for the fastest marathon run is 26.164 miles in 2.08 hours. If the runner were a progressive wave, explain how quickly would he be traveling in m s-1
What is the wavelength of light having a frequency of 5.4 x 10^13 Hz? What is the frequency (in Hz) oflight having a wavelength of 8.26 x10^2 nm?
a volume of 18.0 l contains a mixture of 0.250 mols n2 0.250 mols o2 and an unknown quantity of he. the temperature
a compound contains 14.5 g of magnesium and 3.5 g of oxygen. what is the mass percent of oxygen in the
Compute the theoretical yield of aspirin to be obtained when 1.5 g of salicylic acid as well as 4.0 ml of acetic anhydride (density= 1.08 g/ml) are mixed together. Molar masses- acetic anhydride= 102.1 g/mol; salicylic acid = 138.1 g/mol.
Problem- You determine that it takes 37.25ml of base to neutralize a 20ml sample of your unknown acid solution. The pH of the solution when about 18.62ml of base had been added was 4.20. You notice that the concentration of the base was 0.1050 M. ..
how long would it take for 1.50mol of water at 100.0 degrees to be converted completely into steam if heat were added
We have a solution that is in equilibrium with solid Ag2SO3 (ksp=1.5x10^-14), and buffered at pH=8.00. The sulfite anion (SO3(2-)) is the conjugate base of the bisulfite anion (HSO3-), Calculate the concentrations of all chemical species present i..
A hot air balloon is filled with 1.51 x 10^6 L of an ideal gas on a cool morning (11 C). The air is heated to 125 C. What is the volume of the air in the ballon after it is heated? Assume that noen of the gas escapes from the balloon.
A solution was prepared by dissolving 620 grams of ethylene glycol, C2H6O2 in 1000 grams of water. Find the concentation of ethylene glycol in molality. Find the freezing point and boiling point of the solution. For water Kf= -1.86 Celsius m-1 and..
What is the energy of a photon of green light with a frequency of 5.51 multiplied by 1014 s-1
She pours a 50.0mL sample of water at 345K into the calorimeter containing a 50.0mL sample of water at 298K. She carefully records the final temperature as 317K. Explain what is the value of Ccal for the calorimeter
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