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in a calorimetry experiment the heat capacity of lead was investigated a 48 g sample of lead was heated to 100 degrees
an explorer in the dense jungles of equatorial africa leaves his hut he takes 38 steps at an angle 45 degrees north of
air is about 780 nitrogen molecules and 210 oxygen molecules several other gases make up the remaining 1 of air
a spelunker is surveying a cave she follows a passage that takes her a distance 175 m straight west then a distance 202
a proton has a velocity of v 200x107 msi when it encounters a magnetic field b 00200tj a what is the force f on the
for the structural stone marble the specific heat is 0858 jgdegrees c how much heat is absorbed by a 35 g sample of
in this problem two moles of an ideal gas at 400 k expand quasi-statically and isothermally from an initial volume of
a copy machine costs 45000 when new and has accumulated depreciation of 44000 suppose print and photo center junks this
the compound 1-iodododecane is a nonvolatile liquid with a density of 120gml the density of mercury is 136gml what do
azulene has an appreciable dipole moment write resonance structures for azulene that explain this dipole moment and
what are the volumes of gases produced in the reaction of dehydration of 500 microliters of 2-butanol and 250
a river has a 5ms current due east with respect to the water the boats velocity is 12ms at 60 degress north of east
a large air conditioner has a resistance of 60 ohm and an inductive reactance of 16 ohm the air conditioner is powered
calculate the magnitude of the angular momentum of the venus in a circular orbit around the sun the venus has mass
the hydrolysis of an ester is followed by acid-base titration we take a sample of 300 cm3 from the reaction mixture
the kinetic coeffficient of friction for a 12kg mass on a table is 025 a string from the mass goes across a pulley and
artificial orange flavouring is made by reacting 1-octanol with acetic acid to form the ester octyl acetate the
we titrate 200 cm3 naoh solutions and in the equivalence point the volume of 02 m hcl solution is 150 cm3 calculate the
a piston cylinder assembly whose piston initially rests on stops contains 05 kg of helium gas 100kpa and 25 degrees
a solution of a dye was analyzed by spectrophotometry and the following calibration data were collecteddye concy m
an incident x-ray photon of wavelength 02800 nm is scattered from an electron that is initially at rest the photon is
how many moles of methane are produced when 826 moles of co2 gas react with excess hydrogen gas co24h2-----gtch42h2o i
a machine componant is subjected to the forces and couples shown the componant is to be held in place by a single rivet
to extend the safe diving limit both oxygen and nitrogen must be reduced in the breathing mixture one way to do this is
if an asteroid with mass 622e17kg has radius 32000m what is the acceleration due to gravity near its surface assume the