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a fountain sends a stream of water straight up into the air to a maximum height of 422 m the effective area of the pipe
ammonia and preheated air are mixed to form a gas containing 150 mol nh3 at 500degc if ammonia enters the mixing unit
a niii coordination compound with an octahedral arrangement of ligands has been synthesized containing only water and
a rock is thrown off a 800 m limestone cliff at an angle of 38 degrees below the horizontal with an intitial velocity
an element x forms the oxalate complex x2c2o4 which is 791 c and 2107 o by mass what is the identity of the element
a 4000 liter container is filled to the brim with ethanol at 200 degc the container is heated to 300 degc as a result
determine the theoretical yield of h2s in moles if 40 mol al2s3 and 40 mol h2o are reacted according to the following
1 a constant-pressure insulated piston-cylinder device contains 17 kg of saturated liquid-vapor mixture of water at 150
urea nh22co can be formed from ammonia and carbon dioxide as shown in the following reaction hdeg value for this
when synthesizing aspirin in the labmixed 2g salicylic acid 5ml acetic anhydride 5 drops concentrated sulfuric acid
two spherical objects have a combined mass of 190 kg the gravitational attraction between them is 826times106 n when
draw a resonance structure complete with all formal charges and lone unshared electron pairs that shows the resonance
the distance from the earth to the center of our galaxy is about 23000ly1yr is 947x1015m as measured by an earth based
a 500 kg box is pushed a distance of 150 m up a rough 200 degree incline with a constant force of 350 n the
calculating throretical yield and actual yield for a gringard reaction experimentreaction is1 bromobenzene mg in ether
suppose an object is placed 6 cm in front of a lens that has a focal length of 4 cm where is the image located what are
a car at the indianapolis-500 accelerates uniformly from the pit area going from rest to 285 kmh in a semicircular arc
calculate the height of a column of methanol that would be supported by atmospheric pressure the density of methane is
the electric field of a sinusoidal electromagnetic wave obeys the equation
in a hydrogen atom the electron makes a transition from the n 7 to the n 2 state what is the wavelength of the
the activation energy for the diffusion of car- bon in chromium is 111000 jmol calculate the diffusion coefficient at
on a cold day a heat pump absorbs heat from the outside air at 14degf -10degc and transfers it into a home at a
to simulate gravitation effects in space you design a large cylindrical space station with a radius of 200m the space
a simple camera telephoto lens consists of two individual lenses the objective has a focal length f1 370 cm exactly