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anthraquinone contains only carbon hydrogen and oxygen as well as has an empirical formula of c2h4othe freezing point
a 200 g sample of a large bio molecule was dissolved in 150 g of carbon tetrachloride the boiling point of this
an aqueous antifreeze solution is 400 ethylene glycole c2h6o2 by mass the density of the solution is 105 gcm3 compute
when 1000ml water at an unknown temperature is mixed with 500ml water at 10 degrees celsius the final temperature is 30
a certain first order reaction a-gtb while performed at 25 degree c is 25 complete after 42 min explain what is the
it takes 42 min for the concentration of a reactant in a first order reaction to drop from 045 m to 032 m at 25 degrees
the activation energy for the isomerization of cyclopropane topropene is 274 kjmol by what factor does the rate of this
a ammonium nitrate decomposes to form dinitrogen oxide and water explain what mass of ammonium nitrate must react to
specified the equation co2 2lioh -gtli2co3 h2o if 3 molesco2 react completelya explain how many moles of water should
state the reaction a2b -gt products has the rate law rate kab3 if the concentration of b is dobled while that of a is
sodium hydroxide solution is habitually standardized by titrating a pure sample of potassium hydrogen phthalate khp an
the absorption of a solution that contains chromium iii ions shows two maxima one at about 400nm and the other at about
if the molar ratio between carbon and tin is 1101 in theory what is the correct value of the above
while measuring the mass of a vial and its contents of either carbon or tin as well as then of the empty vial weighing
explain a solid stainless steel cylindrical rod has a 15 inch diameter the density of stainless steel is 770 gcm3 if a
a define what weight of compound y would be removed from the original water solution in question c by two extractions
define the potassium iodide exhibits predominantly ionic bonding the k as well as i ions have electron structures that
explain how many moles are in 50 ml of a sodium hydroxide solution which was made from 12g sodium hydroxide of about 01
a straight ladder is leaning against the wall of a house the ladder has rails 480 meter long joined by rungs 5200 meter
a 26 newton block rests on a horizontal surface the coefficients of kinetic and static friction between the surface and
a merry-go-round is stationary a dog is running on the ground just outside its circumference moving with a constant
a ferris wheel is moving at an initial angular velocity of 10rev38 second if the operator then brings it to a stop in
the flywheel of an automobile engine is a solid disk with a mass of 86 kilogram and a radius of 20 centimeter and is
a rotating wheel requires 50 second to complete 50 revolutions its angular speed at the end of the 50 sec interval is
a grindstone of mass 30 kilogram and radius 20 centimeter starts rotating from rest and has a constant angular