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copper has a density of 8900 gcm3 how many centimeters cubes would be displaced if 35 kg of copper pellets were poured
a proton moves 10m along the direction of an electric field of a magnitude 30vm what is the change in kinetic energy of
a refrigerator removes heat from the freezing equipment at the rate of 20kj and ejects 24 kj into a room per cycle how
draw the major product obtained when 3-methyl-3-hexanamine is treated with excess methyl iodide followed by aqueous
the normal freezing point of ammonia is -78 degrees celsius predict the signs of delta h delta s and delta g for
a 20kg wood block is launched up a wooden ramp that is inclined at a 33 angle the blocks initial speed is 14 the
consider the following galvanic cell at 298k this cell is a bettery producing a positive voltage reaction goes in the
a banked curve in a road is designed so that it can be safely navigated by cars traveling at 20 ms in icy conditions no
a student with a mass of 70 kg sits in a roller coaster that has a vertical loop of radius r20 m if the speed of the
an aqueous solution of ki has a freezing point of -195 c and an osmotic pressure of 270 atm at 250 cassuming that the
explain in terms of newtons law each of the following situationswhat happens when we shake down a mercury thermometer
a man pulls a 333000 kg jet down a runway using a rope the rope is attached to nose of jet and goes down at a 17 degree
one mole of potassium dichromate completely oxidises the following number of moles of ferrous sulphate in acidic
a ball of mass 15 kg is thrown upward it leaves the throwers hand with a velocity of 10 ms the net impulse on the ball
the reaction that produces the water gas mixture is as follows cs h2og cog h2g this reaction requires an input of
calculate the values of q w delta u and delta h for the reversible adiabatic expansion of 1 mole of a monoatomic ideal
a conducting bar with a mass of 0155 kg and a length of 160 cm is suspended touching two vertical electrical contacts
use the following experimental titration data to calculate the unknown concentration and ph of the acidobservationthe
an atom in a solid vibrates at 16thz with amplitude 13pm find the atoms maximum acceleration then if its a carbon atom
a 5g packet of an effervescing stomach antiacid contains 268 g of calcium hydroxide to neutralize stomach acid what
calculate the ph or the hydrogen ion concentration as required for each of the following substancesa 0075m acetic acidb
when at rest a proton experiences a net electromagnetic force that has a magnitude of 72 times 10-14 n and points in
a baseball catcher puts on an exhibition by catching a 0150-kg ball dropped from a helicopter at a height of 100m above
a 40-kg hanging mass is connected by a string over a pulley to a 80-kg block ona frictionless ramp with an angle of
an object of mass m attached to a spring of force constant k oscillates with simple harmonic motion the maximum