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an engineer wishes to determine the spring constant of a helical spring she first puts enough weights on the spring to
the equilibrium constant for thr hypothetical reaction below is kp0113 at 250 oc a2g b2g lt---gt 2abg an experiment is
a tank containing h2 and o2 develops a pinhole leak which gas will leak faster and by what factor h2 16 o2 16 h2 4 o2
use coulombs law to calculate the ionization energy in kjmol of an atom composed of a proton and an electron separated
an unkown metal crytallizes in one of the three cubic latticesthe edge length of the unit cell is 408pmgiven that the
what is the ka of the amino acid glutamine if it is 330 dissociated at ph
my car engine can deliver a maximum of 112 ft-lbf of torque when running at 3450 rpm how many horsepower is the engine
what is the ph of a solution prepared by mixing 500 ml of 010 m methylamine ch3nh2 with 2000 ml of 010 m methylammonium
a piece of wood is 0700m long 0300m wide and 800times102m thickits density is 600kgm3 what volume of lead must be
you are designing a hydraulic lift for an automobile garage it will consist of two oil-filled cylindrical pipes of
the balanced net ionic equation for the neutralization reaction involving equal molar amounts of hcl and ch3ch2nh2
for the next three problems consider 10 l of a solution which is 05 m hf and 02 m naf ka for hf 72 x 10-4 assume 2
titanium iv oxide tio2 is the substance used as the white pigment in paint it is prepared according to the following
metals ions can also be placed in a spectrochemical series in this case larger effective nuclear charges generally lead
in a certain binary-star system each star has the same mass which is 60 times of that of the sun and they revolve about
write the equations for the following reversible systems a solid kmno4 in a saturated aqueous solution of kmno4 b a
a charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 180cm giving
determine the specific heat capacity in jg degrees c of an alloy that requires 842kj to raise the temperature of 3940g
you have a 210- resistor and a 0360-h inductor suppose you take the resistor and inductor and make a series circuit
a lab chemist used gravimetric analysis to determine the lead content in a pond near a battery manufacturing plant a
an l-r-c series circuit r 160 l 0730h and c 200times102f the source has a voltage amplitude of 160v and a
a standard solution of sodium hydroxide is made by dissolving 150g of naoh in 250 ml of water the resulting standard
calculate the change in internal energydelta e for a system that is giving off 650 kj of heat and is performing 975 j
geologists can estimate the age of rocks by their uranium-238 content the uranium is incorporated in the rock as it