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During the course of an experiment, 10.0 mL of water is added to 25.0 mL of aqueous 0.120 M NaCl. What is the concentration of NaCl in the resulting solution?
Calculate the work done (in joules) against a pressure of 1.0 atm at 25 o C. If 3 moles of H 2 react with 3 moles of Cl 2 to form HCl while
Calculate the mass of propylene glycol that must be added to 0.330 of water to reduce the vapor pressure by 2.88 torr at 40°C (Pressure of H2O is 55.3 torr at 40°C ).
determine the amount of heat energy needed to convert 255g of substance x from 40 degrees to 300 degrees
Hemoglobin, a nonelctrolyte is an iron containing protein found in red blood cells. The osmotic pressure of 25.0 mL of an aq. soln containing 0.658 g of hemoglobin is 9.88x10^-3 atm at 25.0 *C. Determine the molar mass of hemoglobin
the volume of a gas dropped from 300 ml to 280 ml when the original pressure of 200 torr was increased. what was the
Write a proposed procedure in chart format to determine the identity of the following aqueous solutions: HCl, Na2C2O4, Al(NO3)3, AgNO3, Mn(NO3)2, ZnCl2, H2O2, NH4Cl, Ba(NO3)2, Na2CO3, NA2S2O3.
A 30.36 gram sample of a hydrate of MnSO4 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, 27.12 grams of the anhydrous compound remained. What is the formula of the hydrate?
Calculate the vapor pressure of ethanol at 30C (in mm Hg). Bp of ethanol 76 C.
what are some of the benefits of using geothermal energy to produce electricity?what are some of the negatives
cindy an overweight high school student is overheard telling her friend that shes going to research how she can
Calculate the change in pH to 0.01 pH units caused by adding 10. mL of 2.63-M NaOH is added to 440. mL of each of the following
In a fuel cell using oxygen as the oxidizer and hydrogen as the fuel, what is the overall cell reaction?
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