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A photon in the gamma ray region of the electromagnetic spectrum has an energy of 9.12 × 10-14 J, calculate the wave length in pm of the photon. Express answer in scientific notation.
Chemicals available for crystallization: ethyl ether, 95% ethanol, methanol, isopropyl alcohol, aceton, hexane, toluene and methylene chloride.
What is the ratio of enantiomers of 2-octanol in the product mixture? 55% (S) and 45% (R). However, I am not sure how to draw the structure of the major enantiomer produced in this reaction. Indicate the configuration of the stereogenic center usi..
Which value is colosest to the POH of a 0.3 M solution of the weak base methylamine (CH3NH2)? the Ka for the acid form of methylamine is 2.27e-11 answer choices are 0.011, 1.94,3.92,10.08 and 12.06.
is the melting of wax a physical or chemical change? from the mass measurement only the mass of the candle at 0 minute
Draw the organic product of the following reaction between (1S,3S)-1-chloro-3-methylcyclopentane and methanethiol in the presence of sodium hydroxide.
acetylene gas c2h2 used in welding produces an extremely hot ?ame when it burns in pure oxygen according to the
8 ml of the HCl was used to titrate the pK_a 3.8 group; so 2 ml was enough to titrate the rest of the high pK_a group. The upper pK_a group must have begun the experiment as 80% acid form, 20% base form.
aluminum has a specific heat of 0.900 jgmiddotdegc. how much energy is required to raise the temperature of 160. g of
Calculate the solubility product constant for Pb(IO3)2 (4.3 x 10^-5 M), given that the molar concentration of saturated solution is as indicated in parenthesis.
the purity of gold alloys is expressed in karats which is the mass fraction of gold multiplied by 24. pure gold is 24
if the half life of a certain radioactive element is 1,250 years what is the percent of atoms remaining after 7,500 years is ?
a 40.0 ml volume of ethane gas is heated from 25.0 celcius to 50.0 celcius. If the pressure remains constant, what is the final volume?
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