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calcuate the number of moles of o2 needed to react with 132 grams of fe givven the balanced equation 2fe2o3
the position of a particle moving along an x axis is given by x 20t2 - 30t3 where x is in meters and t is in
1 how many moles of hno3 are contained in 10 ml of concentrated nitric acid please try to show me your calculations so
an object is launched upward with initial velocity 100ms what maximum height can it
illustrate the overlap draw a picture if possible of a carbon sp3 orbital with the 1s1 atomic orbital of a hydrogen
an 760-cm-diameter 310 sphere is released from rest at the top of a 170-m-long 200 incline it rolls without slipping to
consider the following reaction ch3-cl i- ch3-i cl-suppose we start the reaction with an initial concentration of
when liquid phosphorus trichloride is added to water it reacts to form aqueous phosphorous acid h3po3aq and aqueous
a tablespoon of water has about 300 grams of water in it if this were to be heated to 300 farenheit the water
a box starts out at the top of a frictionless ramp then slides down the ramp has a heighth3meters and a slope
which of the following compound or compounds has electrovalent covalent co-ordinate as well as hydrogen bond explain
a grandfather clock is powered by the descent of a 440-kg weighta if the weight descends through a distance of 0750 m
a trap door of length and width 200 m is held open at an angle of 650deg with respect to the floor a rope is attached
what happens when traces of unreacted magnesium metal in a reaction tube when acid is added after completion of a
x rays diffract from a crystal in which the spacing between atomic planes is 0200nm the second-order diffraction
1 starting with 2 different samples of propyne show how you can make 2-methyl-pent-3-yn-2-ol condensed formula
a dock worker applies a constant horizontal force of 760 n to a block of ice on a smooth horizontal floor the
a 520-kg child takes a ride on a ferris wheel that rotates four times each minute and has a diameter of 200 ma what is
a gaseous mixture is made 0450 moles of neon and 0250 moles of argon the mixture is at 355 celsius and in a container
1 what is the pauli exclusion principle2 specificity and selectivity are important concepts to understand in terms of
an entertainer when performing a bubble trick forms one bubble inside another the surface tension of the bubble liquid
a 0250 mm thick strip of calcium metal is placed in a perpendicular magnetic field of 500t when a current of 117ma is
a hall sensor made from silicon is 040 nm thick and has a charge carrier density of 20 x 10 19 m-3 when it is placed in
how many grams of cs2 can be prepared by heating 128 moles of s2 with excess carbon in a 660l reaction vessel held at
a rectangular loop of wire of dimensions 12 cm times 25 cm faces a long straight wire the two long sides of the loop