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calculate the molality molarity and mole fraction of fecl3 in a 236 mass aqueous solution d 1222
pheromones are compounds secreted by the females of many insect species to attract males one of these compounds
standing on a sidewalk you notice that you are halfway between a clock tower and a large building when the clock
a 50 kg crate is transferred to a lower level by means of an 8 m long frictionless slide the height of the top end of
what are the mole fraction and the mass percent of a solution made by dissolving 035 g kbr in 0405 l water d 100
material found with a mummy in the arid highlands of southern peru has a 164c activityg of carbon that is 785 of the
the power output of an autmobile engine is advertisted to be 220 hp at 600 rpm remeber 1 hp 7446 wattsa what is the
under a particular set of conditions a particular compound decomposes by a first order process if during an experiment
a solid spherical target which weighs 10 kg and has a radius of 25 cm rests on a frictionless table a 30 gram bullet
a bicycle wheel slows down uniformly to rest over a ditance of 45 m becuase the bicyclist sees something int he road
the reactant concentration in a zero-order reaction was 0100 m after 115 s and 250times10-2 m after 350 s what is the
exactly 3135j of heat energy will raise the temperature of 100 g of a metal to 600 c if the specific heat of the metal
which of the following statements is correct with regard to the following two solutions note use the ideal values of
assume the equilibrium constant for the reaction of a particular alcohol with a carboxylic acid is 43 what is the
a 5 gram bullet is fired horizontally into a 15 kg block of wood suspended by a rope from the ceiling the block swings
a large balloon of mass 220 kg is filled with helium gas until its volume is 321 m3 assume the density of air is 129
a 10 kg wheel of radius 05 m is rotating at a rate of 40 rads about an axis through its center of mass the mass of the
on october 21 2001 ian ashpole of the united kingdom achieved a record altitude of 335 km 11000 ft powered by 600 toy
a small coil with n2 loops each of area a2 is placed inside a long solenoid near its center the solenoid has n1 loops
on a dry day your body can accumulate static charge from walking across a carpet or from brushing your hair if your
the half life for the decay of radium is 1620 years what is the rate constant for this first-order processa 428 x 10 to
the rate constant for the first-order decomposition of n2o is 340 s to the -1 what is the half-life of the
given the following rate law how does the rate of reaction change if the concentration of y is doubledrate kxya the
the activation energy of a certain reaction is 467 kjmol at 28 c the rate constant is 0150 s-1 at what temperature in