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Sandy explored the effect of two fluorescent dyes on both the synthesis of benzpinacol as well as the chemiluminescent reaction. Dye 1 quenched the benzpinacol reaction as well as gave a green fluorescence in the chemiluminescent reaction. Dye 2 failed to quench the synthesis of benzpinacol however afforded a red flurorescence in the chemiluminescent reaction. Explain what can say about the approximate energy levels of the S1 and T1 states of the two dyes?
a 255- flask contains pure helium at a pressure of 753 . a second flask with a volume of 465 contains pure argon at a
A 45.0 g block of aluminum initially at 28.0C absorbs 548 J of heat. What is the final temperature of the aluminum?
What is the H3O+ concentration of the solution?
calcium oxide reacts with water in a combination reaction to produce calcium hydroxide caos h2ol --gt caoh2s. in a
A certain shade of blue has a frequency of 7.08 × 1014 Hz. What is the energy of exactly one photon of this light
If it takes 526 J of energy to warm 7.40 g of water by 17 °C, how much energy would be needed to warm 7.40 g of water by 55 °C?
Type the half-cell reaction that takes place at the cathode for the iron-silver voltaic cell. Indicate physical states using the abbreviation (s), (l), or (g) for solid, liquid, or gas, respectively. Use (aq) for an aqueous solution. Do not forget..
1. calculate the numbers of moles of 2-butanol that needed to dissolved in ethenol125gms just to form 12 m 2 butanol
How many grams of ethylene glycol (C2H6O2) must be added to 1.15 kg of water to produce a solution that freezes at -4.82 degrees celsius
what is the volume of a sample of helium that has a mass of 6.36 times 10-3 g and a density of 0.17847 gl? answer in
what wind flow rate entering the canyon would produce a pollutant concentration greater than 0.0025 gmol/ft^3 in the air coming out of the canyon?
what is the minimum atomic radius required for a cubic closest-packed metal to accommodate boron atoms (radius 88 pm) in its octahedral holes?
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