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a lens is used as a magnifier to view an ant placed on a piece of paper the image of the ant is 15cm from the lens and
a body of mass 18 kg makes an elastic collision with another body at rest and continues to move in the original
a 50 g ice cube floats in 200 g of water in a 100 g copper cup all are at a temperature of 0degc a piece of lead at
a student drops two metallic objects into a 120 g steel container holding 150 g of water at 25degc one object is a 240
consider the titration of 500 ml of 0100 m hc3h5o2 by 0100 m koh for the following questions ka for hc3h5o2 13 x 10-5
a 100 g aluminum calorimeter contains 250 g of water the two substances are in thermal equilibrium at 10degc two
a careful photographic survey of jupiters moon io by the spacecraft voyager 1 showed active volcanoes spewing liquid
when the molecular weight of a volatile liquid is calculated from the weight volume temperature and pressure of a
calculate the equilibrium constant at 25 degrees celsius for the reaction 4feaq o2g 4h ----gt fe3aq
a steel wire with mass 223 g and length 108 m is strung on a bass so that the distance from the nut to the bridge is
for a particular reaction hdeg is 735 kj and s is 1937 jk assuming these values change very little with temperature
a 47- kg box of books is pulled up a 416- m-long inclined plank to a height of 18 m a force of 281 n parallel to the
a compound is observed to follow first order reaction kinetics with a half-life t12 of 8 s how long will it take the
a horizontal force of 28 n is applied to a 12- kg radio initially at rest on a table with a level surfacewhat is the
calculate the energy released per mole of deuterium consumed for the following fusion reaction 21 h 31 h -gt 42 he 10
calculate the activity for cs2 at mole fraction 722 for a henrys law standard state using the following data 4469 torr
consider the titration of 500 ml of 20 m hno2 ka 40 x 10 -4 with 10 m koh at each step of the titration a write a
the addition of 2160 g of an unknown metal at 800degrees c to 2000g of water at 210degrees c resulted in a final
two acrobats are balanced on a very thin rod spinning atop a thin pole the first acrobat is 450 kg at a distance of 250
the unpolarized light of intensity inot is passed through two polarizers with axes oriented at 30degrees from each
the molar nuclear mass of fluorine-19 is 1899840 gmol the molar mass of a proton is 1007825 gmol the molar mass of a
calculate the activity for cs2 at mole fraction cs2722 for a raoults law standard state using the following data
what percent of a sample of cesium-137 first order beta negatron decay with t12 30 years remains after 100 years what
imagine a universe in which ms m sub s the value of can be 12 0 and -12 assuming that all the other quantum numbers can
a horizontal bar 2361 m long with a mass of 9127 kg is hinged to a wall the bar is supported from its other end by a