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what is the concentration of chloride ions in a solution that contains 156 mm sodium chloride 214 mm calcium chloride
1 you have dissolved 0503 g of potassium hydroxide in 125 ml of water you wish to neutralize this base by adding
a substance b has a normal boiling point of 893 degc and its enthalpy of vaporization of 260 j g-1 to change 150 grams
if i were to take a 1 kg block of ice whose temperature was -30 c and drop it into a container holding 2 kg of water at
1 the combustion of propane with oxygen is described in the unbalanced reaction below if 01240 kg of propane is
a balanced wheel supported on springs as shown in figure is rotating at 1200 rpm if a bolt weighing 15 g and located 5
a particle has a velocity of 33 of the speed of light if the wavelength of the particle is 15 x 10-10 m calculate the
in a chemical reaction c2h6o pcl3 aelig c2h5cl h3po3 when the reaction was carried out the actual yield of c2h5cl was
calculate the ph of a 160 m kbro solution ka for hypobromous acid hbro is 20 times
find the ka of a weak acid given the following information the concentration of the acid was found from the titration
if the wheel of prob 3-9 shows resonance at 900 rpm with damping of 010 determine the phase lag of the original
many scientists are using 37 mg per kg bw per d-1 as the current value for the slope of the dose-response curve for
in one molecule of monomethylarsonic acid how many valence electrons are
the equilibrium constant k for the following reaction isnbsp510times10-6nbspatnbsp548nbspknh4cls lt-----gtnbspnh3g
prove that a long rotor can be balanced by adding or removing weights in any two parallel planes and modify the single
calculatenbspmoles of the gases once equilibrium has been re-established given volume 070 l initial moles of hig 070
a counterrotating eccentric mass exciter shown in figure is used to determine the vibrational characteristics of a
what volume of oxygen at 4230 k and a pressure of 1274 kpa is produced by the decomposition of 1297 g of bao2 to bao
how molarity can be used to calculate moles describe how to make a certain concentration calculate how many grams of
how much more solute can be added to an unsaturated solution how much will ppt from a supersaturated solution and more
exactly 500 g of hydrone an alloy containing pb and na yields 26 m3nbspof hydrogen gas at stp note that only the na
for turbines operating above the critical speed stops are provided to limit the amplitude as they run through the
if a compound has a log kow value of 65 what would be its predicted concentration in ppm in the fat of fish that swim
determine the minimum ph for quantitative separation of fe3 from mn2 by precipitation with hydroxide ion assume the
what observed rotation is expected when a 168 m solution of r-2-butanol is mixed with an equal volume of a 0840 m