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if equal amounts of na2hpo4 and na3po4 are added in water calculate the resulting ph the pkas of phosphoric acid are 21
a liquid unknown was found to be insoluble in water and soluble in cyclohexane and alcohol the unknown was found to
the average osmotic pressure of seawater at 25 degree celsius is approximately 30 atm assuming that seawater is a
why does low molecular weight alcohols tend to be more soluble in water than high molecular weight
2n2o5----gt 4no2 o2 when 250g of n2o5 is allowed is decompose it is found that 100g of no2 forms what is the percent
a solution of 250 grams of a compound having the empirical formula c6h5p in 250 grams of benzene in observed to freeze
the smallest observed frequency for a transition between states of an electron in a one dimensional box is 35 x 10 14 s
calculate the wavelenght of the light emitted when an electron in a one dimensional box of lenght 30 nm makes a
a 175 g sample of c2h6 mm 3007 g i mol was maintained in a 986 l vessel at 2906 k it was compressed isothermally and
the graph of moles sodium hydrogen carbonate versus moles sulfuric acid produced a linear graph with the equation y 2x
in order to raise the temperature of 266 g of methane gas from 250 c to 400 c how much heat energy in kilojoules is
calculate the compression ratio final inital volume required to raise the temperature of air initally at 1 bar and 300k
consider joules experiment and an insulated container contains 500g of water initially at room temperature and
the active ingredient in pepto-bismol is bismuth subsalicylate c7h5bi04 anslysis of a 1500-g sample of pepto-bismol
how much water is produced in the burning of
a method for measuring organic carbon in seawater consists of oxidation of the organic materials to co2 with k2s2o8
how many atoms of phosphorus are in 344 moles of
1 assume that for a laboratory assignment you need 15 ml of 25m potassium hydroxide koh all you can find however is
calculate triangleg0 and k for the cell reaction in part a at 298k part a - ag pbs -gt ags pb2 overall balanced
if the distance between a proton and electron is 050nm would you except the force of attraction to be greater than or
suppose that a hypothetical element consists of a mixture of two isotopes one isotope having mass 44 amu is present
the thermite process is used to mend railroad tracks together it combines aluminum powder with ferric oxide the
when pure nickel is burned in carbon monoxide the compound nickel carbonyl nico4 is formed write and balance the
carbon disulfide can be made from reacting sulfur dioxide with carbon the reaction is 5c 2so2 cs2 4co how many grams