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suggest at least one characteristic absorption each in the ir spectra of 9 fluorenone and 9 hydroxyfluorene that could
an experiment is performed to determine the density of a metal when a 351 g piece of the metal is placed in a graduated
a man drags a 715-kg crate across the floor at a constant velocity by pulling on a strap attached to the bottom of the
determine the atomic packing factor apf of the simple hexagonal crystal structure assuming the lattice parameter a is
an electron is accelerated through a potential difference of 300 v before colliding with a metal target what
while in europe if you drive 125 km per day how much money would you spend on gas in one week if gas costs 110 euros
a horizontal rope is tied from a house to a pulley and down to a paint bucket filled with sand the paint bucket
a thin piece of metal foil is 1328 ft long and 555 inches wide the density of the metal is 8638 gcm3 and the specific
a pendulum of length l 840 m with a bob of mass m 180 kg is pulled aside until the bob is a distance l 672 m above
a sample of lead has a mass of 4500 kg and a density of 1130 104 kgm3 at 0degc assume the average linear expansion
a star has a mass of 204 1030 kg three-quarters of which is hydrogen the mass of a hydrogen atom is 167 10-27 kg how
write the net ionic equation for the reaction that takes place when the following aqueous solutions are mixed if you
a container in the shape of a cube 96 cm on each edge contains air with equivalent molar mass 289 gmol at atmospheric
if 0250 l of aqueous solution with a density of 100 gml contains 137 micrograms of pesticide express the concentration
write the balanced molecular equation for the reaction that occurs when h2so4 reacts with naoh in aqueous solutionwrite
a pendulum clock has a period of 0658 s on earth it is taken to another planet and found to have a period of 0820 s the
an open organ pipe and an organ pipe that is closed at one end both have langths of 52 m at 20 degrees celsius what is
calculate the amount of calcium fluoride which is insolublecaf2 formula weight 781 gmol formed by the reaction of 30 ml
1 a 0060kg ball is propelled by a 110kg racquet from rest to a speed of 400ms if the two objects are in contact for
a steel wire 32 m long has a diameter of 12 mm the wire stretches 16 mm when it bears a load youngs modulus for steel
a potters wheel a solid uniform disk of mass 70 kg and radius 065 m spins about its central axis a 27 kg lump of clay
a torque of 12 n m is applied to a solid uniform disk of radius 050 m if the disk accelerates at 57 rads2 what is the
calculate the concentration of the chloride ion if you dilute 25 m of 020 m barium chloride to 100 ml with
two identical blocks of iron one at 15degc and the other at 30degc are put in thermal contact with one another suppose