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a giant sequoia tree cut down in 1891 in what is now kings canyon national park northeast of los angeles contained 1342
a concentration cell consists of two snsn2 electrodes the electrolyte in compartment a is 013 m snno32 the electrolyte
a 330cm focal length converging lens is 172cm behind a diverging lens parallel light strikes the diverging lens after
a solution containing 3301 g of an unknown substance in 5000 g of benzene has a freezing point of 130degca what is the
a woman with mass 550kg is standing on the rim of a large disk that is rotating at 0470revs about an axis perpendicular
determine the h oh and the ph of a solution made by dissolving 103 g of naoh a strong base in water to make exactly 150
starting from rest a 98-kg firefighter slides down a fire pole the average frictional force exerted on him by the pole
write a balanced chemical equation for the reaction between cn - and mno4- in basic solution the skeleton ionic
it is desired to magnify reading material by a factor of 221times when a book is placed 796 cm behind a lens what is
calculate the magnetic field inside a solenoid and the energy stored within the coil given the following information i
researchers have created artificial red blood cells these artificial red blood cells are cleared from circulation by a
what is the maximum volume of 60 m naoh that can be added to 100 ml of a buffer solution that is initially 100 m in
what is the common purpose of these precautions flaming the apparatus before running the reaction using a drying tube
1 indicates bond types give the range for a a nonpolar covalent bond b a polar covalent bond c an ionic bond2 name and
an image of the moon is focused onto a screen using a converging lens of focal length f 363 cm the diameter of the moon
a particular bohr orbit in a hydrogen atom has a total energy of -054ev what is the kinetic energy of the electron in
one mole of an ideal gas with a volume of 13 l and a pressure of 69 atm is allowed to expand isothermally into an
a cylindrical electromagnet contains a uniformly magnetized core having a magnetization of 19 106 am surrounded by a
if hydrogen were used as a fuel it could be burned according to the following reaction use average bond energies to
a compound with the molecular weight of 39198 was determined to be 31 hydrogen 315 phosphorous and 654 oxygen
an electron traveling with a velocity of 60 105 ms along the direction enters a uniform magnetic field of 060 t
hydrazine is used as a rocket fuel when 15 g of hydrazine n2h4 was burned in a bomb calorimeter temp increased from
buffer with ph of 55 kb for aniline is 42 x 10-10 calculate the ratio of amine salt to dissolved amine for
youre the operator of a 120times104 v rms 60 hz electrical substation when you get to work one day you see that the
write the noble gas abbreviation ground state electronic configurations for ag and for ag which is