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suppose the original sample is unknowingly contaminated with a second anhydrous salt will the reported percent water in
for a wavelength of 420nm a diffraction grating produces a bright fringe at an angle of26deg for an unknown wavelength
write an equation for the process that corresponds to the electron affinity of the mg ion express your answer as a
an electron and a positron each have a mass of 911 x 10-31kg they collide and both vanish with only
the crucible is handled with oily fingers after its mass measurement the oil from the fingers is burned off will the
when you look down into a swimming pool or lake are youlikely to underestimate or overestimate its depth explain how
given the following equation how many grams of pbco3 will dissolve exactly when 15l of 100 m h is added to 500g of
a string of length 26 m is fixedat both ends when the string vibrates at a frequency of840 hz a standing wave with6
a 20 -kg lead sphere is hanging from a hook by a thin wire35m long and is free to swing in a complete cirle suddenly it
while looking at her image in a cosmeticmirror dina notes that her face is highly magnified when she isclose to the
the wavelength of yellow sodium light in air is 589 nma what is its frequencyhzb what is its wavelength in glass whose
the fired crucible is handled with oily fingers before its mass measurements subsequently the sample is heat and the
a machine shop has 129 equally noisy machines that togetherproduce an intensity level of 90 db if the intensity level
draw structural formulas and complete write the names under the products and indicate the major one show the reaction
a diverging lens f -100 cmis located 210 cm to the left of aconverging lens f 300 cm a268-cm tall object stands to
a thin film of alcohol n136 lies on a flat glass platen151 when monochromatic light whose wavelength can bechanged is
suppose that the proper half life of a certain type of particle is 18mus these particles are produced at one end of a
in visible spectroscopy we place a sample in a source and observe transmittance if we observe 420nm absorbed by the
a concave shaving mirror has a radius of curvature of270 cm it is positioned so that theupright image of a mans face is
describe the technique you would use to determine the density of approximately 5 gram samples of the following at 20
your boss at the cut-rate cuckoo clock company asks you whatwould happen to the frequency of the angular shm of the
in a certain binary-star system each star has the a mass of100 x 1030 kg and they revolve about theircenter of mass the
ascorbic acid vitamin c present in apples is burned in the presence of excess oxygen to yield 580 mg co2 and 158 mg h2o
two pieces of steel wire with the same area of transversalsection have lengths l and 2l the wires are fixed in
cesium atoms are the largest naturally occurring atoms the radius of a cs atom is 262 angstroms how many cs atoms would