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the wavelength of the laser beam used in a compact disc player is 780 nm suppose that a diffraction grating produces
why does the enolate of acetone attack the carbonyl of cinnamaldehyde rather than the carbonly of another acetone
how will density meltingand boiling point temprature hardness elastisityexpansionconductivity been infulance atomic
a parallel plate capacitor is make of two circular thin plates of radius 15 cm separated by 25 mm of a material with
a quantity of ideal gas requires 800 kj to raise the temperature of the gas by 100 k when the gas is maintained at
a generator produces 60 a of current at 120 v the voltage is usually stepped up to 4500 v by a transformer and
given that aprotic solvents are not practical for unimolecular processes little if any reaction occurs via a
you dissolve 0425 g of naoh in 300 l of a buffer solution that has h2po4 hpo42- 0132 ma what is the ph of the
white light is incident normally on a thin soap film having an index of refraction of 134 it reflects with an
two positive charges each of magnitude 1 x 10-6 c are located a distance of 17 cm from each otherwhat is the magnitude
the ph of a solution of hn3 was found to be 47 find the original concentration of the hydroazoic acid
1 what is the purpose of 18m sulfuric acid in the preparation of aspirin2 old aspirin tests positive to a fecl3 test
edta forms strong complexes with most metal ions except those in group 1a what information could be obtained if the
400 ml of an acetic acid of unknown concentration is titrated with 0100 m naoh after 200 ml of the base solution has
what will be the ph change when 230 ml of 0100 m naoh is added to 800 ml of a buffer solution consisting of 0159 m nh3
using standard enthalpies of formation from appendix l calculate ho for the following reaction 2 c6h6l 15 o2g --gt 12
here are the problems id appreciate the answers to one or both not sure if my karma entitles me to both though1 in the
a 600-microc charge is moving with a speed of 630 104 ms parallel to a very long straight wire the wire is 500 cm from
a 0050 m h2s solution contains 020 m nicl2 and 035 m hgno32 what ph is required to precipitate the maximum amount of
at what temperature will a fahrenheit thermometer reading be the same as a celsius thermometer
titration of 01756 g of primary standard na2c2o4 required 3204 ml of a kmno4 solution calculate the concentration of
a solution is made by mixing 500 ml of 167 m naoh with 500 ml of 100 m ch3cooh calculate the equilibrium concentrations
describe the enery transformations that take place as you swing on a swingwhy do you have to keep pumping to keep
oxalic acid h2c2o4 can be neutralized with a solution of sodium hydroxide naoh a write a balanced chemical equation for
250 ml of a hydrofluoric acid solution of unknown concentration is titrated with 0200 m naoh after 200 ml of the base