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a car with mass m traveling with speed v has a kinetic energy ke what is the kinetic energy of a second car that has
a 500 g sample of liquid water at 250 degree c is mixed with 290 g of water at 45 degree c the final temperature of the
determine the ph of a solution that is 107 hcl by mass assume a density of 101 gml for the
a copper washer is to be fit in place over a steel bolt both pieces of metal are at 297degc if the diameter of the bolt
calculate the ph at the equivalence point in titrating 0100 m solutions of each of the following with 0061 m
a 30 m organ pipe is open at both ends and contains air the velocity of sound in air is 331 ms what is the wavelength
based on the following definitions of stereospecifc and stereoselective propose a reaction that is stereospecific but
how would one prepare 10ml of a 025m hcl solution if 1m hcl was available how much 1m hcl is needed how much distilled
a what should be the length of an organ pipe open at both ends if the fundamental frequency is to be 2645 hzmb what is
magnesium phosphate precipitates from an aqueous solution does the entropy of the system increase or
the enthalpy of vaporization of ethanol is 3856 kjmol it has a boiling point of 35144 k what is the difference in
you have 5 l of an ideal gas at 25 ordmc and 5 bar are expanded to a final pressure of 100 bar assuming cv32 r
what is the formula and name for the following 1 kohhbr2 znagno33 knacl 4 hclnaoh 5 bacl2naso4 6
without using equations explain why delta s for a liquid or solid is dominated by the temperature dependence of s as
a sample of 15 g nawo4 dehydrate is dissolved in 25 ml di h2o 75g granulated zn was added then heated to 70 c 75 ml of
a what is the ph of a 552e-04 m solution of hcl report your answer to two places past the decimal pointb what is the ph
a sound source radiates sounds uniformly in all directions the intensity of the sound at a distance of 100 m is 100 x
a piano tuner sounds two strings simultaneously one has been previously tuned to vibrate at 2920 hz the tuner hears 20
what is the ph change of a 0300 m solution of citric acid pka477 if citrate is added to a concentration of 0130 m with
years ago a block of ice with a mass of about 20 kg was used daily in a home icebox the temperature of the ice was 00c
mg oh2 is a sparingly soluble salt with a solubility productksp of 56110-11 it is used to control the ph and provide
what concentration of the barium ionba2 must be exceeded to precipitate baf2 from a solution that is 100 10 -2 m in
two waves with identical frequency but different amplitudes a1 60 cm and a2 30 cm occupy the same region of space are
a nichrome wire is used as a heating element in a toaster from the moment the toaster is first turned on to the moment
a buffer solution of volume 1000 ml is 0150 m na2hpo4aq and 0100 m kh2po4aq refer to table 1 for ka valuespka1 212