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Calculate the osmotic pressure (in torr) of 6.00 L of an aqueous 0.779 M solution at 30.oC, if the solute concerned is totally ionized into three ions (e.g., it could be Na2SO4 or MgCl2).
A student titrates 0.738 grams of an unknown solid, weak acid with 0.1027 Molarity NaOH. What is the molecular weight of the unknown solid, weak acid?
A seagull flies at a velocity of 11.00 m/s straight into the wind. If it takes the bird 19.0 min to travel 6.00 km relative to the earth, what is the velocity of the wind?
Classify the liquids that she has consumed as acidic or alkaline. State the pH values of water and blood. State what the patient can include and avoid in her diet on a regular basis to avoid these sym
A major-league pitcher can throw a ball in excess of 35.3 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches a catcher who is 17.0 m away from the poi
the molar heat capacity of silver is 25.35 rm J/mol * C. How much energy would it take to raise the temperature of 8.60 g of silver by 11.1 C?
You have constructed a hydroquinone concentration cell (below) with buffers of pH = 10 and pH = 2. Using the Nernst equation, calculate the cell potential for this electrochemical cell.
A peregrine falcon dives at a pigeon. The falcon starts downward from rest and falls with free-fall acceleration. If the pigeon is 83.5 m below the initial position of the falcon, how long does it t
At a certain temperature and pressure 1.4 L of N2 reacts with 2.1 L of O2. If all the N2 and O2 are consumed, what volume of N2O3, at the same temperature and pressure, will be produced?
The quantity of the gas is fixed and the volume remains constant as the pressure is adjusted to 6.00 ´ 102 torr. What is the resulting temperature of the gas?
The distances shown in the drawing are rSM = 1.5 1011 m and rEM = 3.85 108 m. Determine the magnitude of the net gravitational force on the moon.
Calculate the mass of KI in grams required to prepare 8.00 102 mL of a 2.80 M solution
How many grams of calcium (m.w. = 40.1g) is needed to react with 41.5g Cl (m.w. = 35.5g) to produce CaCl2?
If the solubility of benzoic acid is 6.80g per 100mL of water at 100 degrees celsius and 0.35g per 100mL of water at 25 degrees C.
Can this plane land on a small tropical island airport where the runway is 0.800 km long? What is the actual minimum distance needed to stop the plane?
Sodium hydroxide is a common ingredient in drain cleaners such as Drano. The mole fraction of sodium hydroxide in a saturated aqueous solution is 0.310. What is the molality of the solution?
The standard molar enthalpy of vaporization for water is 40.79 kJ/mol. What mass of steam is required to release 500. kJ of energy upon condensation?
A solid cylindrical disk has a radius of 0.12 m. It is mounted to an axle that is perpendicular to the circular end at its center. When a 47-N force is applied tangentially to the disk, perpendicula
Procaine hydrochloride (M = 272.77 g/mol)is used as a local anesthetic. Calculate the molarity of a 4.666 m solution which has a density of 1.1066 g/mL.
Two satellites are in circular orbits around Jupiter. One, with orbital radius r, makes one revolution every 16 h. The other satellite has orbital radius 3.8r. How long does the second satellite tak
Compute the wavelength of the radio waves from the following stations. An AM station operating at a frequency of 710 kHz, An FM station wiht a frequency of 96.3 MHz.
5.0 g of H2O at 23.0 oC is added to 100.0 g of H2O at 67.5 oC.What is the temperature of the resulting mixture.
Draw a Newman projection for stilbene dibromide. Is this isomer of stilbene dibromide chiral?
A battery with an emf of 1.50 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 1.40 V and the current is 0.10 A. What is the value of the external resistor R?
What is the percent ionization of ephedrine hydrochloride with pka of 9.6 in the intestinal tract buffered at PH 8?