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1 5000 ml of 0120 m naoh is added to 525 ml of 0250 m weak acid ka 344 times 10-5 what is the ph of the resulting
two students decided to fling balloons filled with m1681 grams ofice water at coeds who are sun batheing on the roof of
s-2-iodooctane is dissolved in acetone and is found to rotate planepolarized lightone equivalent of radioactive na131i
a horizontal wire of length 053 m carrying a current of 75 a isplaced in a uniform external magnetic field when the
two identical containers are open at the top and are connected atthe bottom via a tube of negligible volume and a valve
1 name two antacids and their two active ingredients2 write a chemical equation to show the reaction of stomach acid
magnesium reacts with chlorine gas to produce magnesium chloride how many moles of mg will react with 26 moles of
a 13 g projectile traveling 152 mspenetrates into a 025-kg wad of putty and emerges cleanly at42 msa if the putty is
what is the rate of the following reaction ms if the rate constant for the reaction is 108e-3 lbullmol-1bulls-1 and the
an electric fan spinning with an angular speed of 16 rads has a kinetic energy of 39 j what is the moment of inertia of
a solution of volume 0500l contains 168g nh3 and 400g nh42so4 how many milliliters of 12m hcl must be added to 0500 l
in the bohr model of the hydrogen atom an electron in the5th excited state moves at a speed of876104 msin a circular
the hydroxyl radical oh is important not only in atmospheric chemistry but also in cell biology as it participates in
a constant horizontal force f applied by a fishing line to auniform solid disk of radius r and mass m the line is
using the following data calculate the concentration of copperii ions in the unknown solution the cell path length is
a mixture of the compounds aluminum sulfide and aluminum oxide contains 272 g of aluminum and is 145 by mass aluminum
a person who weighs 760 n steps onto aspring scale in the bathroom and the spring compresses by071 cma what is the
calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n 5 to n
a typical aspirin tablet contains 324 mg of aspirin c9o4h8 a monoprotic acid with a ka 28x10-4 a monoprotic acid
a solid cylindrical disk has a radius of 020 m it is mounted to an axle that is perpendicularto the circular end of the
assuming that the smallest measurable wavelength in an experiment is 0570 fm femtometers what is the maximum mass of an
the three air carts shown in figure 9-16 have massesreading from left to right of 4m2mand mrespectivelythe most massive
a certain shade of blue has a frequency of 708 times 1014 hz what is the energy of exactly one photon of this
if the isotope with the least mass didnt exist and the others did what would that do to the atomic mass for the
a ball is dropped from a height of 63 centimeters andrebounds to a height of 40 centimeters calculate the coefficient