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a radioactive isotope of element x has a mass number of 79 the most stable isotope of this element has a mass number of
was wondering if there was any program that permits for automatically balancing chemical equations in particular and
on 15 june 2005 a 72 magnitude earthquake occurred in the pacific ocean centered 157 kilometers from crescent city
you have been asked to assist in the design of a new power generator which harnesses the power of progressive waves
explain the record for the fastest marathon run is 26164 miles in 208 hours if the runner were a progressive wave
a wave with a wavelength of 400 meters is located in deep water 1000 meters deep and is travelling toward the shore
consecutively to make some tea you place a 51363 g copper teakettle containing 12117 ml of water density 10 gml on a
explain why do gas bubbles when rising through a liquid get bigger is it for the reason that of the molecules that are
environmental engineers utilizes alkalinity as a measure of the capacity of carbonate buffering systems in water
explain what would be the effect on your calculated copper if some blue color remained when you acidified your
the dissociation energy for n2 is 976 ev light of energy2123 ev cause n2 to emit photoelectrons the most energetic of
a salt solution can be acidic basic or neutral when dissolved in water define which of the following salts will not
suggest a mechanism for the base catalyzed condensation of cyclohexanone with two molecules of benzaldehyde to give
explain how many joules of thermal energy are required to heat a 6000 gallon swimming pool from a cool 58 degree f to a
salicylic acid c7h6o3 has been suggested as a calometric standard its heat of combustion is -3023x103 kjmol c7h6o3 from
explain what is the percent purity of a sample of impure h2c2o4bull 2h2o oxalic acid dehydrate 12607 gmol if 09157
a you have as well been informed that an insect infestation has just decimated your suppliers rose crop and you are now
draw the skeletal structure for the major organic product formed when 1-butyne reacts with 2 equivalents of
a balloon is filled to a volume of 550 ml at a temperature of 400 degrees celsius the balloon is then heated up at
define the standard enthalpy of formation of al3 aq is -5384kjmol explain how much heat is evolved when 1377g of als
gout is caused by an error in nucleic acid metabolism that leads to a buildup of uric acid in body fluids which is
sodium chloride is added gradually to a solution is 0010 m in cu ag and au the ksp values for the chloride salts are 19
the formation constant of the complex ion fecn64- is4211045 this complex ion is formed by the reaction of fe2with a
use the kinetic theory in this equation if a given mass of gas in a fixed volume exert a higher pressure when the
a 500 sample of a dry mixture of potassium hydroxide potassium carbonate as well as potassium chloride is reacted with