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the melting point of a newly discovered element is 19354degf express this temperature in degrees
a baseball player decides to keep going past second base and try for third base the 62 kg player begins sliding 340 rm
show the change in oxidation number give number of electrons gained or lost per atom eg 3e- gained in the following
butanol and chlorobenzene form a minimum-boiling azeotropic system the mole fraction of 1-butanol in the liquid x and
your friends 00185 kg graduation tassel hangs on a string from his rearview mirror when he accelerates from a stoplight
the camera is 450 m in front of the mirror the bird is at camera level 689 m to your right and 412 m from the mirror
a student carried out the standardizatoin of a potassium permanganate solution using the procedure described in this
a respiration monitor has a flexible loop of copper wire which wraps about the chest as the wearer breathes the radius
we titrated kmno4 into oxalic acid dihydrate now by using the mass of substance and volume ect i found the number of
if temperature and pressure remain constant how does the volume of a gas sample vary withthe number of moles of gas
a wedding ring of diameter 199 cm is tossed into the air and given a spin resulting in an angular velocity of 23
two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface
the conductivity of a solution can be measured easily with a probe that dips into a solution and a meter that reads out
electrons are ejected from a metallic surface with speeds ranging up to 45 105 ms when light with a wavelength of 625
the density of air under ordinary conditions at 25 c is 119gl how many kilograms of air are in a room that measures
an object of mass 661 kg is released from rest and drops 190 m to the floor the collision is completely inelastic how
the reaction of bromine with acetone follows first order kinetics ie where k is the rate constant c is the
a 165 kg mass is placed on the end of a spring that has a spring constant of 195 nm the mass-spring system rests on a
a 400 g sample of solid ammonium carbonate is placed in a closed evacuated 300 l flask and heated to 400 degrees c it
1 an object is initially moving with a speed of 100 ms in the direction 600 degrees n of e ten seconds later the object
calculate the ph of the solution that results when 250 ml of 0120 m hcl is mixed with 400 ml of
a 700-g block is released from rest at an initial height above a vertical spring with constant k400nm and negligible
what is the velocity of a hydrogen molecule after absorbing a photon 584 nm what is the translational energy of the
an electron orbits a proton at a radius of 540 10-11 m what is the magnitude of the magnetic field at the proton due to
a simple gaussmeter for measuring horizontal magnetic fields consists of a stiff 42 cm wire that hangs from a