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We are enabling trans to cis isomerizaton of E-1,2-dibenzoylethylene by irradiating the alkene with light. Which alkene is more stable, the E or Z isomer above? why does irradiation go from E to Z rather than the other way around? how will the Rf values from TLC compare?
A solution contains 0.635g NaOH in 236 ml solution. What is the [OH-]?
Identify the major attractive force between each of the following atoms or molecules: a) He; b) HBr; c) SnH4; d) CH3-CH2-CH2-OH.
The light sources were controls. How would the experiment be different if you used different light sources? Explain why it was not important to know the exact intensity of either light source.
Foruntantely, this toxin decomposes to a safe mixture of products by first-order kinetics with a rate of .27 days^-1. How long will it take for the water to be safe to drink
? sample of neon has a volume of 1.50 litres initially at 16 degrees celsius. when the volume of the sample is charged
How many grams of the solid can be formed from 268 g of calcium nitrate and 115 g of phosphoric acid?
The atmospheric activity of 14 C is 15 cpm/gC (counts per minute per gram of carbon). Assume that the cloth was made in the year 24 B.C. The half-life of 14 C is 5730 years. What will be the expected activity of 14 C of this sample
Consider the halide ions as nucleophiles. Briefly explain why F-, the strongest base among the halide ions, is the best nucleophile in polar aprotic solvents while iodide the weakest base is the best in protic solvents.
A student determined the Ca^2+ ion content of a 100 mL sample of calcium-fortified orange juice. After adding 2.0 M HCl solution to the sample, the student filtered the juice to remove the pulp and other particulate matter.
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons.
calculate the amount of heat required to completely sublime 15.0 of solid dry ice at its sublimation temperature. the
Write the half reactions and the net cell reaction for the following cell. Calculate the cell potential. S.C.E. || MnO4- (aq, 0.035 M), Mn+2 (aq, 0.022 M), pH = 4.50 | Pt(s)
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