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you are in a labratory and need to make 90 ml of a solution that is 2 micrograms eb per 01 ml safflower oil outline the
when a 200-kg object is hung vertically on a certain light spring described by hookes law the spring stretches 267 cma
a 202 ml benzene solution containing 227g of an organic polymer has an osmotic pressure of 863 mmhg at 21 degrees
acetylsalicylic acid aspirin hc9h7o4 is the most widely used pain reliever and fever reducer determine the ph of a 0018
a projectile is fired at an upward angle from the top of a 165 m cliff with a speed of 195 ms what will be its speed
a uniform thin rod of length 07 m and mass 30 kg can rotate in a horizontal plane about a vertical axis through its
the mass percent of iron in an iron ore can be determined by converting fe to fe2 in acid solution and then titrating
a 500 ml solution of 12 m hcl at 241 c is mixed with 500 ml of 13 m naoh also at 241 c in a coffee-cup calorimeter
crossfire was a popular board game in which players attempted to propel a puck forward towards their opponets side by
a constant current of 1190 a is passed through an electrolytic cell having an impure copper anode a pure copper cathode
a 12600-kg railroad car travels alone on a level frictionless track with a constant speed of 158 ms a 5350-kg load
ammonia is produced industrially from the reaction of nitrogen and hydrogen write the balanced chemical equation for
1 what causes acid rain why is acid rain more damaging in some lakes than others2 what is the ph of 100 l of rainwater
a 042-kg particle has a speed of 80 ms at point a and kinetic energy of 75 j at point ba what is its kinetic energy at
i solution i is 0088 m in compound z and has an absorbance of 0203 in a 1 cm cell at 520 nm the solvent alone has an
a 200 kg block is on an inclined plane which makes up an angle of 52 degrees to the horizontal the coeff of friction is
which of the following compounds is quite insoluble in water but would liberate a gas when treated with aqueous acetic
what mass of silver iodide can be made by the reaction of 100 g of silver nitrate agno3 with 100 g of sodium iodide nai
the mars reconnaissance orbiter circles the red planet with a 119 period the mass of mars is 6421023 the radius is
a 0411g sample of powdered copper mixed with an inert soluble additive was fully consumed by 234ml of 0602m nitric acid
a white solid is known to consist of one or more of the following compounds agno3 na2co3 cacl2 and pbno32 a sample of
what is the sum of all coefficients in the complete and balanced net equation for the reaction occurring when chlorine
how many microliters of 1000 m naoh solution must be added to 2500 ml of a 01000 m solution of lactic acid to produce a
a crate of mass 115 kg is pulled up a rough incline with an initial speed of 150 ms the pulling force is 100 n parallel
synthesize 2-butanol from an aldehyde and a grignard reagentshow two possible routes to the