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a 100 mole sample of he is placed in an empty vessel to make a pressure of 500 atm a 480g quantity of methane ch4 is
1 a harmonic oscillator has a period of vibration of 4 seconda explain what is the frequency of vibrationb explain how
blocks mass is 500 g in airwhile placed in water 20 celcius d99821 gcm3 the block only weighs 56 gramsexplain what is
at 40 c h2o2 aq will decompose according to the subsequent reaction2h2o2 aq -----gt 2h2o l o2 gthe subsequent data
construct a born-haber cycle to compute the lattice enthalpy of tlcl given the following data sublimation of tls182
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sodium metal can photo-emit electrons make a plot of the kinetic energy of the photo-emitted electrons opposed to the
pick a problem that you are currently experiencing as well as apply the steps of the scientific method this must be a
explain when 140ml of hcl of unknown concentration but less than that of the base are reacted with 15 ml of 3218m naoh
a proton in a magnetic field has two spin states one aligned with b and the other anti-aligned the energies of these
a explain how many liters of ethylene glycol ch2 oh ch2oh must be added to a car radiator that contains a total of 65 l
1 explain what is the wavelength of an electron whose linear velocity is 18185 msec2 if all the energy is dissipated as
a hot-air balloon is filled with air to a volume of 400 x 103 m3 at 745torr and 21 degrees celsius the air in the
assume at certain time the wave function is n for all x between values x1cm and x2cm for all values of x outside the
1state a thoughtful paper that compares how chemists of the early 20th century helped shape social policy as well as
define when 144g of carbon were burned in the presence of 551g of oxygen 167g of oxygen remained un-reacted explain
state the balanced net ionic equation for the reaction between mno4- ion as well as fe2 ion in acid solution explain
a 781g sample of hcn contains 0289g of h as well as 405g of n determine the mass of carbon in a sample of hcn with a
the boiling point of methanol is 722o c the molar boiling point elevation constant for methanol is 27o cm explain what
fluorine-18 decays by positron emission as well as is a key tracer used for medical imaging via positron emission
explain how many milliliters of water vapor measured at 318 degrees c and 735torr are formed when 336ml of nh3 at
explain while the gibbs free energy g is the fundamental function of natural variables t p n growing biological cells
on an average is an electron farther away from the nucleus when it is occupying a 2p orbital in hydrogen than when it
formic acid is a weak acid with a ka value of 18x10-4 at 25 celsius a solution with a concentration of 424m formic acid
a 40-cuft tank is filled with air at 147psia and 80 f the tank also contains a 15-lb block of dry ice solid co2