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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
an underwater scuba diver sees the sun at an apparent angle of 380deg from the vertical what is actual direction of the
air contains nitrogen oxygen argon and trace gases if the partial pressure of nitrogen is 587 mmhg oxygen is 158 mmhg
a popcorn kernel initially at rest explodes into two pieces one piece having twice the mass of the other what is the
a sample of hydrogen fluoride gas has a volume of 1250 ml at stp what is the pressure in mmhg if the volume is 255 ml
the worlds strongest magnet that can produce a sustained field is a 45-t device at the national high magnetic field
an earth satellites elliptical orbit ranges from 300km to 840km altitude at the high point its moving at 729kms how
explain why tetrachloethylene is widely used for dry cleaning of fabrics and as a paint stripperwould you expect it to
a capacitor that has air between its plates is connected across a potential of 240 v and stores 480 uc of charge it is
a certain automobile engine delivers 224 104 w 300 hp to its wheels when moving at a constant speed of 210 ms 47 mih