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a piece of metal at 80 degrees celsius is placed in 12 l of waterat 72 degrees celsius the system is thermally isolated
a new binaryasteroid is discovered in our solar system with an orbital periodaround the sun of 5 yrs the two components
a saturated solution of magnesium hydroxide mgoh2 in equilibrium with undissolved solid is prepared at 25degc the ph of
a calculate the specific heat of the metal assuming perfect insulation and a calorimeter heat capacity of zerob
look up and write the structures of d-galactose and d-mannose how do they differ from
to calibrate the calorimeter electrically a constant voltage of 36 v is applied and a current of 26 a flows for a
when at rest two trains have sirens that emit a frequency of 300hz the trains travel toward one another and toward an
determine the empirical formula of a compound that is 2542 percent na 392 percent cl and 3538 percent o by
a star similar to our sun radiates energy at the prodigious rate of46 1026 wa at what rate does this star convert mass
suggest a reasone why would be inadvisable to add the sulfuric acid to the diluted bleach solution before that of the
the standard enthalpy and entropy for a slightly soluble salt at 25 degrees c were determined to be 71 kj and 49 jk
suppose a sphere thin hoop and a disk were all rolling along a horizontal surface with the same speed when they
what is the wavelength in nanometers of a photon with a frequency of 560 multiplied by 1014 sec-1 the speed of light in
a goodyear blimp typically contains 5400m3 of helium he at an absolute pressure of 11multiplied by 105 pathe
two blocks are suspended over a pulley the pulley can be treatedas a uniform solid cylindrical disk the downward
a combination of blue lightn160 and red light n150 is incident on the surface of a flat glass plate because of
the end of the cutting cord on a gas powered weed cutter is 015 m in length if the motor rotates at the rate of 20 revs
a merry-go-round at a playground is a circular platform that is mounted parallel to the ground and can rotate about an
green light of a wavelength 550 nm enter a piece of glass that hasindex of refraction n 15 for the light what is the
a titration was performed at 25 degrees c and the ksp of a slighlty soluble salt was determined to be 15times10-4
a tube is closed at one end and open to 16 o c air atthe other end the tube vibrates in the fifth harmonic at
what is the ph of a solution that contains 015 m hc2h3o2 and 028 m c2h3o2- use kb 56 x 10-10 for c2h3o2- ph
to fill a childs backyard inflatable wading pool you use a gardenhose with a diameter of 29 cm water flows from this
a star has a mass of 18 1030 kg and radiates energy at the rate of40 1026 w what fraction of its original mass has the
assume that the protons in a hot ball of protons each have akinetic energy equal to kt where k is the boltzmann