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What is the frequency of light needed to eject electrons from a metal is called the threshold frequency, ν0. Find the minimum energy needed to eject electrons from a metal with a threshold frequency of 3.80 × 1014 s-1.
specific brand of gourmet chocolate candy contains 7.00 rm g of dietary fat in each 22.7-rm g piece. How many kilograms of dietary fat are in a box containing 4.00 lb of candy?
Reaction of a single enantiomer of W produces a single enantiomer of Y as the only substitution product. X likewise reacts readily in water though at a slower rate than W; a chiral substitution product Z, C8H17OH, is again formed. Unlike W, howeve..
In a formal sense, the conversion of a carboxylic acid to an amide corresponds to which of the following. the combining of the fragments which remain after the loss of -OH from the carboxylic acid and -H from ammonia or an amine
Exactly 34.42 mL of 0.1013 M NaOH is used to titrate a 25.00 mL sample of H2SO4. What is the concentration of the sulfuric acid?
when you have a solution of potassium chlorate containing 4g at 65 degress celcius. how many additional grams of solute
for 1st order problem, at 298k the rate is 3.8X10^-6M/s, and at 350k the rate is 4.2X10^-5 M/s. What is the half life at 360k?
the recommended adult dose of elixophyllin a drug used to treat asthma is 6 of body mass. calculate the dose in
Determine the standard reaction enthalpy for the partial combustion of methane to carbon monoxide according to the following reaction:
When 5.454 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 17.11 grams of CO2 and 7.006 grams of H2O were produced.
0.000333 g fluorescein (332.32 g/mol) is dissolved in 225 mL solution of ethanol. The density of ethanol is 0.785 g/mL. What is the concentration of the solution in molarity (M)
What functional groups are the key players in a condensation polymerization reaction. How so.
a solution is prepared by mixing 55.0 ml of 0.015 m bacl2 and 150. ml of 0.045 m k2so4. what are the concentrations of
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