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what is the concentration of hydroxide ions in pure water at 30 degrees if kw at this temperature is 147 x
an electron has a kinetic energy of 600 10-17 j it moves on a circular path that is perpendicular to a uniform magnetic
for an enzyme that displays michaelis-menten kinetics what is the reaction velocity vas a percentage of vmax observed
a student suspends two identical conductive spheres m 030g from two equally long nylon threads each 25 cm long he
calculate the nuclear binding energy for 5525 mn in megaelectronvolts per nucleon
a converging lens produces a real image magnified 3 times that of an object if the object is placed at 15 cm from the
a proton rest mass 9383 mevc2 is confined to a small region of space 20 nm wide what is the uncertainty on its speed
write a balanced redox equation for the seperation of cu2 from the other qual 1 cations the other cations are na k
compare the structures of amino acids dipeptides polypeptides and proteins which has the largest molecular mass the
a solid wire with a radius of 300 mm carries a current of 00530 a assume the current is uniformly distributed in the
the restriction enzyme ssti cuts phage dna at positions 24472 and 25877 draw a picture of the gel you will see if it is
an electron is moving in a concentric circular orbit inside a solenoid of radius 489 cm in such a manner that it grazes
calculate the amount of heat required to raise the temperature of 2500 g of water from 25 c to 100c calculate the
a fossil was analyzed and determined to have a carbon-14 level that is 420 that of living organisms how old is the
at 200degc a mainly silicon resistor has a resistance of 275 and a tungsten resistor has a resistance of 752 at this
lasik eye surgery uses pulses of laser light to shave off tissue from the cornea reshaping it a typical lasik laser
a uniform magnetic field in a region of space changes at a rate of 5000e-3 ts what is the strength of the induced
when solid ammonium chloride nh4cl is added to excess water a solution forms and the temperature of the system
calculate the ph of a 017 m aqueous solution of ammonium chloride nh4cl at 25degc assume that kb for ammonia nh3 is
at what point during a titration of a weak acid with a strong base does the ph pka what ratio would cause ph gt pka
when the heart pumps blood into the aorta the pressure gradient-the difference between the blood pressure inside the
what is the volume required of a 02 m koh solution to reach the half equivalence point in titrating 25 ml of a 01 m
a rectangular box is to have a square base and a volume of 40 ft3 if the material for the base costs 030 per square
a bolt on an engine is to be tightened with a maximum torque of 75 nm if a wrench has a length of 030 m what is the
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