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the empirical formula of a solid is ab2 and it dissolves to form the cation a2 and the monoanion b-solid ab2 is added
a coal-fired plant generates 600mw of electric power theplant uses 48 x 106 kg of coal each day and the heat
what is the ph for a buffer solution containing 049 molar acetic acid and 002 molar potassium
a 27 kg object oscillates with simple harmonic motion on a spring of force constant 5100 nm the maximum speed is 09 ms
a cylinder rotating about its axis with a constant angular acceleration of 18 rads2 starts from rest at t0 at the
a block of ice of mass 100 g and at 00 c is dropped into 500 g of water at 800 c in a styrofoam cup assume that the cup
a boy of mass 35 kg and a girl of mass 40 kg are skating towards each other with speeds of 25 ms and 20 ms respectively
for the cell reaction cu2aq zns arrow cus zn2aq e cell 110v use the nernst equation to determine e cell when the
a 300-liter aluminum cylinder at 500degc is filled to the brim with gasoline at the same temperature if the aluminum
assuming you have avaiable to you a 500 g sample of glass c00837 jg c and a 500 g sample of iron c00452 jg c both
what ph is required to start precipitation of feoh3 from a 0110 m solution of fecl3 ksp of feoh3 40
a student accidentally mixed small pure white crystals of napthalene into a small vial containing small white crystals
a uniform 19-kg rod that is 090 m long is suspended at rest from the ceiling by two springs one at each end both
a person bounces up and down on a trampoline while always staying in contact with it the motion is simple harmonic
a solid disk rotates in the horizontal plane at an angular velocity of 0077 rads with respect to an axis perpendicular
how many grams of formic acid hcooh must be added to 0240 l of 0110 m sodium formate hcoona to yield a buffer solution
a laboratory technician drops a 00850-kg sample of unknown material at a temperature of 1000c into a calorimeter the
show that parthpartpt 0 for an ideal gas using thermodynamic relationships and the definition of
you performed a nitration reaction in 15 minutes to completion assume it took the entire allotted time if we used
you are given a sample of metal and asked to determine its specific heat you weigh the sample and find that its weight
how much acid of 05n concentration would be required to fully neutralize an 86g sample of sodium
how many moles of a reducing agent are used in a reaction containing 15l of this material which possesses a density of
a steel tank is completely filled with 300 m3 of ethanol when both the tank and the ethanol are at a temperature of
a us penny has a diameter of 19000cm at 200 c the coin is made of a metal alloy mostly zinc for which the coefficient
an unknown monoprotic weak acid ha has a molar mass of 550 a solution contains 250 g of ha dissolved 800 ml of solution