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an alien spacecraft flies from its home planet to earth a distance of 433 light-years according to the aliens on board
a 500-ml volume of 015 m is titrated with 025 m koh calculate the ph after the addition of 200 ml of
allen machines specializes in developing weed-harvesting equipment that is used to clear small lakes of weeds allen
rays of the sun are seen to make a 310deg angle to the vertical beneath the water at what angle above the horizon is
a find the of nickel in the coin solution molority of nickel is 8469 density of coin solution as 100gmlb find the of
a diver shines a flashlight upward from beneath the water at a 445deg angle to the vertical at what angle does the
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