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a geological sample is found to have a pb-206u-238 mass ratio of 0773100 assuming there was no pb-206 present when the
a circuit containing a 76 h inductor has an alternating current supplied to it if irms is 56 a and vp is 28 v find the
the freezing point of ethanol c2h5oh is -1146 c the molal freezing point depression constant for ethanol is 200cm what
an object with moment of inertia i1 is rotating freely with no torque applied with angular velocity w another object of
the strong acid soultion of hcl has ph of 122 what is the concentration of h cl- and
the density of ice is 917 kgm3 and the density of sea water is 1025 kgm3 a swimming polar bear climbs onto a piece of
a 500ml sample of 00240 m nh3aq is titrated with aqueous hcl what is the ph after the addition of 150ml of 00600 m
for the reaction 2no cl2 2nocl if the change in molarity is cl2 is 241 x 10 -2 m in one second how do you find the
light propagating in the glass n1 165 wall of an aquarium tank strikes the interior edge of the wall with incidence
suppose that when a certain sound intensity level in db triples the sound intensity in wm2 quadruples determine this
in a electrode potentialcell reaction lab you conduct an experiment with a voltmeter connected to two electrodes two
we will abbreviate malonic acid ch2co2h 2 as h2m find the ph and concentrations of h2m hm- and m2- for the following ka
a 24-kg boy stands 5 m from the center of a frictionless playground merry-go-round which has a moment of inertia of 234
if you were to draw samples from the top of a homogeneous solution and then the bottom would you find differences
the team monitoring a space probe exploring the outer solar system finds that radio transmissions from the probe take
the rate constant for a reaction increases by a factor of 10 when the temperature is raised from 250k to 325k what is
imagine trying to build a portion of a draw bridge as in the following the side towers reach h100 meters high above the
a 160- resistor a 120-microf capacitor and a 170-mh inductor are connected in series with a 155-v generatora at what
2pbss 3o2g 2pbos 2so2ghfkjmol -100 0 -2173 -2969gfkjmol -987 0 -1879 -3004sjmol k 912 2050 687 2485assuming that hf
a particle moves along the x axis it is initially at the position 0210 m moving with velocity 0090 ms and acceleration
fe2o3molar mass1597 gmol reacts with comolar mass 280gmol according to the equation fe2o3s3coggtgtgtgt 3co2g2feswhen
a titration of 600ml of 030m pyridine c5h5n required 900ml of 020m hcl to reach the equivalence point what is the ph at
what is the escape speed on a spherical asteroid whose radius is 5000 km and whose gravitational acceleration at the
if 0100 mol of argon gas occupies 215 l at 725 mmhg what is the temperature in degrees
a certain kind of glass has an index of refraction of 1640 for blue light of wavelength 430 nm and an index of 1595 for