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an aqueous solution containing 538g of an optically pure compound was diluted to 2000 ml with water placed in a
there are three masses m1 20 kg m2 50 kg and m3 70 kg the mass are all affixed to a massless rod of length 15cm m1
1 a 010 m solution of the weak acid ha has a ph of 296 what is the percent dissociation of ha in this solution what is
a street light is supported by two wires and each makes a different angle from each other the one on the left is 32
at an outdoor market a bunch of bananas attached to the bottom of a vertical spring of force constant 160 nm is set
use standard reduction potentials shown below to calculate the potential of a nickel-cadmium cell that uses a basic
marble is composed mainle of calcium carbonate if 0750 g of marble react with hydrocloric acid to produce 165 ml of
a capacitor with a capacitive reactance of is connected in series with a 100 resistor across in ac source of frequency
in a mass spectrometer a singly negative charged ion having a particular velocity selected by using a magnetic field of
an ac generator supplies 15 amps at 440v to a 50000v power line through a step-up transformera what must the turn ratio
the gas stream from a chemical reactor contains 25 mol ammonia and the rest inert gases the total flow is 1814 kg molh
a bar magnet is dropped through a coil of wirea describe what will be observed on the galvanometer by sketching a graph
how many grams of lead will be deposited at the cathode from a solution of pb2 ions by a 015 ampere current flowing for
a proton with a speed 15 x 105 ms falls through a potential difference of 100 volts gaining speed what is the speed
with what speed in mileshr 1 ms 223 mihr must an object be thrown to reach a height of 915 m equivalent to one
predict the standard cell potential for the process and whether or not this cell would function as diagrammed
it was once recorded that a jaguar left skid marks that were 290 m in length assuming that the jaguar skidded to a stop
why is nitroacetic acid o2nch2cooh pka168 a much stronger acid than acetic acid ch3cooh
zinc has a standard reduction potential of -136 v for znoh4 2- 2e- yields zn4oh- find the formation constant for zn2
a diamond has a mass of 566 g and the gold ring it is set in has a mass of 1256 g how many carbon atoms are there
iron forms a magnetic oxide with the formula fe3o4 that contains both fe2 and fe3 ions what is the average oxidation
a satellite circles a spherical planet of unknown mass in a circular orbit of radius 19 x 107 m the magnitude of the
comet halley has an orbital period of about 75 yearsa determine the average distance of comet halley from the sun in
1 what are the electron configurations of the following metal ions fe3 zr4 and co32 draw a the high-spin electron
a a solar collector is 120 efficient in gathering solar energy and converting it to heat if the average intensity of