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calculate the ph of the following the solution prepared by mixing 2500ml of 0100m malonic acid with 1500ml of 016667m
a canoe heading 30 degrees west of north is being paddled at a rateof 7 mih the current is pushing a the canoe 20
describe how to prepare a 50000ml of a ph 1000 100m carbonate buffer using the following reagents nahco3 fm 84007 gmol
a the xenate ion xeo3oh- slowly decomposes in alkaline solution to give perxentate xeo64- and xenon as the only
when 50g of koh is added to 100ml of water the temperature of the solution increases by 3c assume the density of the
it takes 105 j of work to move21c of charge from a positive plate to anegative plate what voltage difference exists
determine the enthalpy change when 235 g of carbon is reacted with oxygen according to the reaction cs o2g co2g delta
two waves are traveling in the same direction along astretched string each has an amplitude of 40cm assume the wavesare
a system absorbs 159 kj of heat and performs 83 kj of work on the surroundings what is the change in e of teh
it is determined by immersing a crown in waterthat is volume is 39 in3 000225 ft3a what would its weight be if it were
the tip of a scanning electron microscope has a radius ofcurvature of 5 nm and is at a potential of 3v by treating the
a kennedy half-dollar has a mass that is 1150 x 10-2 kg the coin is a mixture of silver and copper andin water weighs
a golf ball rolls of a cliff with an inital speed of 130 ms theball falls a vertical distance of 188 m into a lake
a 63-kg water skier is pulled up a 140 degree incline by a ropeparallel to the incline with a tension of 512 n the
why is benzyl bromide which appears to be a primary halide able to undergo sn2 and sn1 reactions support your answers
a certain part of an aircraft engine has avolume of 16 ft3a find the weight of the piece when it is made of ironb if
a hydrate of calcium sulfate caso4xh2o contains 20 water calculate the ater of crystallization x and write the formula
hydrogen displays an emission line in the infrared region of the spectrum at 18756 nm determine the values of n for the
two railroad cars each og mass 6500-kg and traveling 95 kmhcollide head-on and come to rest how much thermal engery is
how does sec distinguish between large and small molecular weights be specific here also why is sec ideally suited for
a 40kg child standing on a frozen pond throws a 05kg stone to theeast with a speed of 5ms neglecting friction between
an observer moving at a speed of 0995c relative to a rod measuresits length to be 190m and sees its length to be
green laser light with a wavelength of 521 nm strikes adifraction grating with 3000 linescm how many spots appear on
a stopper tied to the end of a string is swung in a horizontal circle the string makes a 100 degree angle with the
10-kg mass weighs 98 n on earths surface and the radiusof earth is roughtly 64x106ma calculate the mass of earthb