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when 422 g of phosphorus is burned 967 g of white oxide is obtained determine the empirical formula of the
part a what is the minimum cross-sectional area required of a vertical steel cable from which is suspended a 340
a reaction was found to be second order in carbon monoxide concentration the rate of the reaction if the co is doubled
a sample of gasoline was run through the gc yielding several peaks indicating the components that made up the gasoline
in an engine a piston oscillates with simple harmonic motion so that its position varies according to the following
for hydrogen gas at 500 k initially at 200 atm in a 100 l vessle and expanding into 200 liter vessel calculate the
a growing plant creates a highly complex and organized structure out of simple materials such as air water and trace
an iron tower in is 304 meters tall on a cold day t -9 degrees celsius what is its height of the tower on a hot day
230 moles of an ideal gas with molar heat capacity at constant volume of 1247 jkmol is expanded irreversibly and
gold has a face-centered cubic arrangement with a unit cell edge length of 408 how many moles of gold fit in a sheet
23 kg of a liquid metal with a latent heat of fusion of 5312 kjkg freezes while at its melting temperature of 354 degc
at a certain distance from the center of the earth a 45- object has a weight of 401 find distance2 if the object is
prolonged exposure to mercury hg vapor can cause neurological disorders and respiratory problems for safe air quality
a car is traveling at 25 ms when the brakes are applied and it comes to rest after 5 s how far did it travel while the
a solution was analyzed using aa spectroscopy for au the signal registered was150 thesample solution wasplaced in a
two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface
for an isothermal expansion of 100 mole of ideal gas at 399k and initially at 1600bar pressure compare the total work
a uniform 825m 1750 kg beam is hinged to a wall and supported by a thin cable attached 200m from the free end of the
a 75-m long extension cord carries a current of 12 amps the cord is made of two wires carrying currents in opposite
a thin uniform rod has a length of 0520 and is rotating in a circle on a frictionless table the axis of rotation is
two periodic waves interfere somehow both waves have the same frequency and wavelength if one wave has an amplitude of
suppose someone is running towards a siren which is at rest the siren emits a frequency of 400 hz what will the person
a horizontal force of 50 n pushes a box that weighs 75 n across the floor at a constant speed the coefficient of
oxygen modeled as an ideal gas is in a container and has a temperature of 639degc what is the rms-average magnitude of