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a solution of 750 g of benzene c6h6 and 750 g of toluene c7h8 has a total vapor pressure of 809 mmhg at 303 k another
a grinding wheel in the shape of a solid disk is 0300m in diameter and has a mass of 250kg the wheel is rotating at
a large cylindrical tank contains 0720 of nitrogen gas at 220 and 120times105 absolute pressure the tank has a
compare the shift in frequency if a 1750 hz source is moving toward you at 15ms versus you moving toward it at 15 ms
a calculate the magnitude of the angular momentum of the earth in a circular orbit around the sun is it reasonable to
the osmotic pressure of a solution containing 204 g of an unknown compound dissolved in 175 ml of solution at 25 c is
a man of mass m 700 kg pushes a rotating platform of mass m 850 kg and radius r 300 m at the playground with a
a bag of sugar weighs 700 lb on eartha what would it weigh in newtons on the moon where the free-fall acceleration is
a 220- bullet embeds itself in a 160- block which is attached to a spring of force constant 780 if the maximum
compute a wavelength of the yellow light emitted by a sodium lamp if the frequency of the radiation is
two objects with masses of 260 kg and 650 kg are connected by a light string that passes over a frictionless pulleya
two forces are applied to a car in an effort to move it as shown in the following figure where f1 434 n and f2 387 n
according to the shop manual when drilling a 128-mm-diameter hole in wood plastic or aluminum a drill should have a
the heaviest invertebrate is the giant squid which can have a weight of about 23 tons spread out over its length of 60
explain why the electrostatic interaction in ionic solids would if alone result in the collapse of the crystal to zero
find the mass of urea ch4n2o needed to prepare 508 g of a solution in water in which the mole fraction of urea is
a wave with a frequency of 1200 hz propagates along a wire that is under a tension of 800 n its wavelength is 172 cm
an object with a mass of m 48 kg is attached to the free end of a light string wrapped around a reel of radius r 0265
when 46 mol o2 is heated at a constant pressure of 325 atm its temperature increases from 252 k to 300 k given that the
a 200mw laser pulse is focused with a lens to a diameter of 15 mu ma what is the laser beams electric field amplitude
a 161 kg piece of zinc at 68 degrees celsius is placed in a container of water the water has a mass of 20 kg and has a
115 grams of kcl is dissolved in 750ml of water assume density1005gml what are the molality molarity mole fraction mole