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a gas at 1 atm and 125degc is expanded from a volume of 150ml to a volume of 4l the pressure of the gas after expansion
consider the reaction below what volume of co2 gas will be produced by the reaction of 100 gram of caco3 at 25degc and
gas lanterns used on camping trips have mantles small lacy bags that give off light made from a rayon mesh impregnated
a black wood stove has a surface area of 220 m2 and a surface temperature of 185deg c what is the net rate at which
an engine absorbs 1698 j from a hot reservoir and expels 1205 j to a cold reservoir in each cyclea what is the engines
the ph of a 0010 mol l-1 solution of a weak monoprotic acid is 209 at 25oc what is the pka for this
a particular engine has a power output of 400 kw and an efficiency of 220 assume the engine expels 8500 j of energy in
if you are limited to two significant figures in your determination of the molar mass what could you do to increase the
two stars are at rest 10times1014m apart this is about 10 times the diameter of the solar system the first star is the
write down mass balance and charge balance equations for 0100mol l-1 na2c2o4aq mass balanced equation charge balance
how many milliliters of hydrogen would be collected at a pressure of 754 torr and 22 c in a reaction between 0315 grams
a piano tuner stretches a steel piano wire with a tension of 1040n the wire is 0400m long and has a mass of
a gas mixture containing 0300 mol o2 500 mol co and 250 h2 mol exerts a total pressure of 16 atm what is the partial
a steel tank contains 342 g of ammonia gs nh3 with molar mass 170 gmol at a pressure of 113 x 106 and a temperature of
what is the equilibrium constant kc for the reaction below assume temperature is 25oc hint represent the reaction below
a beam of hydrogen molecules h2 is directed toward a wall at an angle of 58deg with the normal to the wall each
consider the following reaction n2g 3h2g gt 2nh3g the initial pressures of the h2 is 3 atm and the pressure of the n2
when synthesizing aspirin in the lab what is the purpose of the sulfuric acid in the mixture mixed 2g salicylic acid
the blackbody radiation emitted from a furnace peaks at a wavelength of 25 10-6 m 00000025 m what is the temperature
a persons leg measures 40 cm between the knee and the hip with an average leg diameter ignoring bone and other poorly
the generator at a power plant produces ac at 27000 v a transformer steps this up to 355000 v for transmission over
a spherical balloon has a radius of 675m and is filled with helium the density of helium is 0179 kgm3 and the density
in a game of billiards the cue ball is traveling eastward when it strikes a second ball that is initially at rest after
he diffuses faster than ar because he is smaller has a higher average speed is less reactive is