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the winning time for the 2005 annual race up 86 floors of the empire state building was 10 min and 49 s the winners
how many grams of calcium phosphate are theoretically produced if we start with 340 moles of cano32 and 240 moles of
predict any precipitates that are formed when the following solutions are mixed and give the net ionic equation bano32
a coin with a diameter of 3 cm is dropped onto a horizontal surface the coin starts out with an initial angular speed
a heating element in a stove is designed to dissipate 3380 w of heat when it is connected to 200 v assuming that the
what is the empirical and molecular formula for a compound that is 4616 carbon 516 hydrogen and 4868 fluorine if the
an inductor has a 540- reactance when connected to a 600-hz source the inductor is removed and then connected to a
a 12-v battery is connected in series with a switch 60-ohms resistor and coil what energy is stored in the coil when
lakes that have been acidified by acid rain can be neutralized by the addition of limestone caco3 how much limestone in
which reactant is in excess from the reaction of 350 g of hydrogen with 276 g of oxygen to form
a 1000 ml sample of 010 m nh3 is titrated with 010 m hno3 determine the ph of the solution after the addition of 1500
outline the steps necessary to properly prepare 100ml of te buffer include the amounts of tris-base and edta and all
what is the percent yield of a reaction where 153g of oil of wintergreen is collected after 163g salicylic acid is
a plastic bar is rubbed with fur and the bar aquires a net charge of 834 uca determine the net charge on the fur and
explain why treating a mixture of vanillin and eugenol to steam distillation would result in distillation of eugenol
what is the molar mass of toluene if 085 g of toleune depresses the freezing point of 100 g of benzene by 047 degrees c
you are the science officer on a visit to a distant solar system prior to landing on a planet you measure its diameter
a disk has a moment of inertia 30 x 10-4 kg m2 and rotates with an angular speedof 35 radsec what net torque must be
a steel ball of mass 05 kg is fired vertically up from the edge of a building 20 m high with an initial speed of 10 ms
if a graph shows all of the possibilities for the no of refrigerators and the no of tvs that will fit into an 18
the osmotic pressure of 0010m mgso4 solution at 25 degrees c is 0318 atm calculate i the van hoff factor for this mgso4
a piece of rock reads 2776 n on a scale when in air but 1893 n in a fluid of unknown specific gravity the rock has a