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the second-order rate constant for the decomposition of nitrous oxide n2o into a nitrogen molecule and oxygen atom has
water treatment plants commonly use chlorination to destroy bacteria a byproduct is chloroform- chcl3 a suspected
when an ambulance is stationary the siren gives off a sound at a frequency of 500hz in answering the following
1 how many grams of ethylene glycol c2h4oh2 are needed per kilogram of water to protect radiator fluid against freezing
an electron in the n7 level of hydrogen atom relaxes to a lower energy level emitting light of 397 what is the value of
the speed of sound in air is 345 ms a tuning fork vibrates above the open end of a sound resonance tube if sound waves
in an investigation of the reaction between copperii ions cu2 and hydrazine n2h4 in alkaline conditions the following
a hard-boiled egg of mass 530g moves on the end of a spring with force constant 256 nm the egg is released from rest at
as morning sunlight falls on a tethered helium balloon it expands from a volume of 110 cross 103 m3 to a volume of 117
one liter of oxygen combines with 1 l of hydrogen to form 1 l of hydrogen peroxide given that the molecules of hydrogen
an athlete does the 100 m dash if observers on a spaceship moving with a speed of 0741c relative to earth see the
the distance to the moon can be found with the help of mirrors left on the moon by astronauts a pulse of light is sent
at 25degc the vapour pressure of pure pentane is 511 torr and that of hexane is 150 torrwhat is the mole fraction of
a student calculated an averagelue of 4289 for a siyles law constant k based on the number ofgnificant figures in the
a circular coil having 19 turns and a radius of r 192cm carries a current of 330a it is placed in a uniform magnetic
describe a procedure for making 100 ml of a 010 m solution of barium nitrate bano32 make sure to include all equipment
an ideal monotonic gas is compressed at a constant pressure of 09 atm from 14 l to 35 l note atmospheric pressure is
two identical gliders on an air track are held together by a piece of string compressing a spring between the gliders
a copper rod of cross-sectional area 112 cm2 has one end immersed in boiling water and the other in an ice-water
a cepheid variable in a nearby galaxy looks 106 times fainter than an identical cepheid in the milky way the cepheid in
a spy satellite circles the earth at an altitude of 160 km and carries out surveillance with a special high-resolution
an elderly sailor is shipwrecked on a desert island but manages to save his eyeglasses the lens for one eye has a power
a glass plate n 161 is covered with a thin uniform layer of oil n116 a light beam of variable wavelength is normally
an x-ray photon with a wavelength of 0240 nm scatters from a free electron at rest the scattered photon moves at an
a box weighing 215 n is placed on an incline plane that makes an angle of 350 with the horizontalcompute the component