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a 15 kg bass is swimming along at 25 ms when it ingests a 50 kg minnow traveling in the opposite direction at 3 ms what
a sample of 100 mol perfect gas molecules at 300k with cpm7r2 is put through a constant-volume heating to twice its
when catching a baseball a catchers glove moves by 12 cm along the line of motion of the ball if thebaseball exerts a
if 535ml of 01000 m naoh solution is needed to just neutralize excess acid after 2000 ml of 01000 m hcl was added to
a person lifts a 47 kg cement block avertical distance of 102 m and thencarries the block horizontally a distance of
are solution of the following salts acidic basic or neutral for those that are not neutral write balanced equations for
a rock is dropped from the top of a 100 - m - tall building andlands traveling at a speed of 30 ms how much energy was
the trend in second ionization energy for the elements from lithium to fluorine is not a smooth one predict which of
explain why the following reaction occured using the vocabulary cation anion ionization energy and electronegativity
write out a detailed procedure for determining the enthalpy ofreaction between citric acid h3cit and sodiumhydroxide
brazilains are quite familiar with fueling their automobiles with ethanol a fermentation product from sugarcane
calcium carbonate decomposes with heat to give calcium oxide and carbon dioxide gas if 2 mols of caco3 decompose how
exactly 500 cubic centimeters of a gas at 1 atmosphere and 0 degrees celsius weighs 0581 grams the composition of the
a rubber ball filled with air has a diameter of 250 cm and a massof 0540 kg what force is required to hold the ball in
a person weighs 170lb assuming the density of the averagehuman body is about that of water estimate her bodys volume
a sealed cubical container 160 cm ona side contains three times avogadros number of molecules at atemperature of
a surveyor measures the distance across a straight river by thefollowing method starting directly across from a tree on
how much energy is required for an electron in a hydrogen atom to make a transition from the n2 state to the n3 state
a beach ball mioving with a speed of 127 ms rolls off apier and hits the water 075m from the end of the pier how high
determine the equilibrium constant of a weak acid if you titrate 2500 ml of the acid diluted with 5000 ml of water with
the human eye is able to detect as little as 235e-18 j of green light of wavelength 510 nm calculate the minimum number
to stop a car first you require a certain reaction timeto begin braking then the car slows down at a constant
an electron in a vacuum is first accelerated by a voltage of 21100 v and then enters a region in which there is a
a 15-cm-diameter cylinder of heliumgas is 20 cm long and at 20degc thepressure gauge reads 120 psia how many helium
plan a procedure to seperate 20 g of mixture into its components using a flow chart using solubility tests select the