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consider the isothermal expansion of 450 mol of an ideal gas at 450 k from an initial pressure of 120 bar to a final
distillation on a mixture of benzene and toluene is performed as the in the initial distillate is being collected you
what is another reagent other than phosphoric acid that can be used to determine the concentration of calcium ion by a
mercury poisoning is a debilitating disease that is often fatal in the human body mercury reacts uith essential
a lab procedure requires 350 ml of a liquid which of the following glassware should be used to obtain the volume with
assuming that a neutron star has the same density as a neutron calculate the mass in kg of a small piece of a neutron
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1 the sides of a rectangular block of solid copper metal are measured to be 826 cm 2984 cm and 092 cm length width and
how much dry solute would you take to prepare the following solution from the dry solute and the solvent 129g of 0120m
a blackbody emits light with a frequency of 154 x 1014 s-1 the total energy emitted per second at this frequency is 102
at 250 c a solution has a concentration of 3179m and a density of 1260 gml the density of the solution at 500 c is 1249
silver chloride often used in silver plating contains 7527 what is the mass of silver chloride required to plate 285
carbon-14 dating can be used to estimate the age of formerly living materials because the uptake of carbon-14 from
fecl3 reacts with only one of the two compounds aspirin and salicylic acid with which part of a molecule does fecl3
george is making spaghetti for dinner he places 401 kg of water in a pan and brings it to a boil before adding the
a solution is prepared by disolving 060 g of nicotine a nonelectrolyte in water to make 12 ml of solution the osmotic
the vapor pressure of pure water at 25 celcius is 238 torr what is the vapor pressure torr of water above a solution
procaine hydrochloride m 27277 gmol is used as a local anesthetic calculate the molarity of a 4666 m solution which
the radius of an atom of gold au is about 135 angstron a express this distance in nanometers and in picometers b how
a serving of kellogs corn flakes is 00892 k by mass the usrda for potassium is 60g if one serving of corn flakes has a
based on the following equation determine the mass of a 500ml sample of your salt solution report the mass as a number
ammonia is produced using the haber process in which nitrogen and hydrogen combine n2g 3h2g gt 2nh3g how many grams of
on a trip of 287 miles a driver maintains an average speed of 850 kmhr how many minutes does the trip
a bird is flying around the world at a rate of 885 ftsec how many days will it take to complete its journey
the concentration of a drug in the body is often expressed in units of milligrams per kilogram of body weight the drug