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the weight of a star is usually balanced by two forces the gravitational force acting inward and the force created by
what is the value of q when 712g of water vaporizes at 373 k the enthalpy of condensation of water at 373 k is -407
show mechanism of acetal formation through hemiacetal starting with 3-methylbutanal yieleding ethanol and
the speed of sound does not depend on the loudness or the frequency of sound the speed of sound in dry air 0 degree
an organic pesticide mw 1837 is 843 cl a 0627 g sample containing the pesticide plus inert material containing no
a motorcyclist intends to perform a stunt in which he jumps a river 25 meters wide the motorcyclist must jump from a
a researcher determines that 744 j of energy needed to vaporize a 355-mg sample of a liquid at its boiling point
a projectile is fired directly upward at such an initial velocity that it reaches half its height of 45 meters
use atomic properties to explain why is xenon 11 times as soluble as helium in water at 0 degrees celcius on a mole
as astronauts travel between the earth and the moon their mass remains constant but their weight diminishes assume the
introduction-presents the background information to the report may include-nbsp introduction of pin on disk machine and
a plane diving with constant speed at an angle of 490deg with the vertical releases a projectile at an altitude of 560
a reaction which is second order in reactant b has a rate constant of 1110-3 lmolesec how long would it take it for the
light with 760 nm is diffracted by a single slit and the first intensity minimum the first dark fringe occurs at
when 776 grams of magnesium bicarbonate are mixed with 300 ml of 010 m hydrocyanic acid how many liters of gas are
ignoring any side reactions and assuming the reaction occurs completely how large in kg an oxygen candle kclo3 would be
a closely wound coil has a radius of 630 cm and carries a current of 170 a how many turns must it have if at a point on
if the ea for a reaction is 728kj and if the rate constant at 15c is 10010-4 lmolesec then what is the value of the
a rock is dropped in a large tank of benzene n15 and sinks to the bottom of the tank if the apparent depth of the rock
the solubility of kno3 is 155 g per 100 g of water at 75 degree c and 380 g at 25 degree c what mass of kno3 will
an ac generator with a frequency of 341 hz and an rms voltage of 120 v is connected to a 498-microf capacitora what is
a converging lens has a focal length of f 43 cm for blue light and f 53 cm for red light an object is placed 140 cm
the rate of reaction between carbon monoxide and hygrogen to form ch3oh with respect to carbon monoxide is 118 10-4
your eye diameter 25 cm is able to focus the image of a tree on your retina the tree is 24 m tall and 85 m away what is
each of the plates of a parallel plate capacitor has an area of 106cm2 and a plate separaton difference of 2mm suppose