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household ammonia nh3 is a weak base 1000ml of ammonia was titrated with 01683 moll hcl 2274 ml was required to reach
after a spacewalk a 233-kg tool is left 589 m from the center of gravity of a 401-metric ton space station orbiting
a 170 g ball attached to a spring with spring constant 21 nm oscillates horizontally on a frictionless table its
use the following rate constant equations to determine the equillibrium constant for the following reaction at 400 k
a turn-table is spinning down due to friction in the bearings it takes 60 seconds for the turn-table to stop from an
at 3000 m altitude the partial pressure of oxygen is approximately 013 calculate the solubility of oxygen in freshwater
a compass needle initially points 197o e of n due to the earths magnetic field however when current flows through a
interhalogens are covalent compounds where 1 halogen is bonded with another halogen when 3299g of iodine reacts with
consider a rectangle which is constructed with the long side having a length l and the short side having a length 0 5l
ground beef may be irradiated with high-energy electrons from a linear accelerator to kill pathogens in a standard
many hunting dogs enjoy standing nose-to-nose with a skunk while barking furiously oblivious to the skunk spray
consider a large uniform rectangle length l on the long edge and width w on the short edge this rectangle is rotating
a uniform thin rod of length 040 m and mass 30 kg can rotate in a horizontal plane about a vertical axis through its
which of the following two compounds anisole or toluene would have a larger rf value using silica gel plates and
the figure below shows a rigid structure consisting of a circular hoop of radius r and mass m and a square made of four
a 30 kg particle with velocity v 50 ms i - 60 msj is at x 30 m y 80 m it is pulled by a 70 n force in the negative x
a particle of mass m0 is given a kinetic energy equal to one-third its rest-mass energy how fast must the particle be
a record turntable rotating at 3313revmin slows down and stops in 21 s after the motor is turned offa find its constant
you have a 15 m long copper wire you want to make an n-turn current loop that generates a 24 mt magnetic field at the
the second-order fringe of 610 nm light is observed at an angle of 12deg when the light falls on two narrow slits how
it takes 31 minutes for a 1000-g sample of a certain isotope to decay to 0350 g what is the half-life of this
monochromatic light falls on two very narrow slits 0050 mm apart successive fringes on a screen 510 m away are 52 cm
a 392-microf capacitor is connected across a 642-hz generator an inductor is then connected in parallel with the
the activation energy of an uncatalyzed reaction is 89 kjmol the addition of a catalyst lowers the activation energy to
2no g br2 g yields 2nobr g what is the rate of disappearance of br2 when no 59times10-2 m and br2 026