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suppose solute a has a distribution coefficient of 10 between water and diethyl ether demonstrate that if 100 ml of a
a microscope with a tube length of 200 mm achieves a total magnification of 400x times with a 20x times objective and a
a large tank supported high off the ground is filled with water to a depth of 205 m a hole of cross-sectional area 60
ammonia and hydrogen chloride gases react to form solid ammonium chloride a 100 l reaction flask contains ammonia at
as a spaceship flies past with speed you observe that 10000 s elapses on the ships clock in the same time that 10000
calculate the work done when 250 g of tin dissolves in excess acid at 100 atm and 29degc assume ideal gas
find the velocity of the falling parachutist assuming the initial velocity is zero the mass is 681kgdrag is 125 kgs
a 250 ml solution of 0600 m edta was added to a 570 ml sample containing an unknown concentration of v3 all v3 present
the numbers 3n -1 are never prime if n 2gt 2 since they are always even however it sometimes happens that 3n -1 2 is
write the anode half-reaction for the electrolysis of aqueous sodium chloride and sodium sulfate i know the answers for
suppose an astronomical telescope is being designed to have an angular magnification of 316 if the focal length of the
calculate the ph at the equivalence point for titration of 0140m methylamine ch3nh2 with 0140m hcl the kb of
a piece of aluminum specific heat 910 jkg degrees c of mass 200 g at 800 degree c is dropped into a styrofoam cup
find the ph and volume ml of 00372 m naoh needed to reach the equivalence points in titrations of 200 ml of 00892 m
the work function for platinum is 635 eva find the cutoff wavelength for platinumnmb what is the lowest frequency of
a rectangular coil of 100 turns measure 40cm by 20cm this coil is placed next to an electromagnet which is switched on
the lenses used in a compound microscope have powers of 90d and 60d if a total magnification of -250x is desired
if a camera with a 60 mm lens is to resolve two objects that are 30 mm from each other and both objects are 40 m from
in a mass spectrometer a singly ionized 24mg ion has a mass equal to 3983 10-26 kg and is accelerated through a 280-kv
a 0050 m h2s solution contains 015 m nicl2 and 035 m hgno32 what ph is required to precipitate the maximum amount of
a hunter who is a bit of a braggart claims that from a distance of 15 km he can selectively shoot either of two
light enters a container of liquid at an angle of 48deg to the normal the refracted beam makes an angle of 37deg with
a gaseous compound containing hydrogen and carbon is decomposed and found to contain 8266 carbon and 1734 hydrogen by
in a youngs double slit experiment the 10th order dark fringe is located 0025 m to the side of the central bright
a large group of football fans comes to the game with colored cards that spell out the name of their team when held up