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What is the band gap energy in kilojoules per mole if bule diamonds absorb orange light with a wavelength of 675nm?
Calculate the proton motive force across the inner mitochondrial membrane a 25 degrees C when theelectrical difference is -0.18 V (inside negative), pH outside us 6.7, and pH inside is 7.5.
Copper metal and zinc metal react differently in the presence of certain acids. For example, while both react with concentrated nitric acid and dissolve completely, only zinc reacts and dissolves in dilute hydrochloric acid.
questions on chemical equations.in dilute nitric acid copper metal dissolves to form aqueous cupric nitrate nitrogen
determine the mass of precipitate in grams that forms when 213.8 ml of 0.132 m cacl2 solution is reacted with excess
If the endpoint is surpassed in the back-titration with NaOH, will the reported amount of antacid in the sample be too high or too low?
The radioisotope argon-41 is used to measure the rate of the flow of gases from smokestacks. It is a γ emitter with a half-life of 109.2 minutes. Calculate the fraction of an argon-41 sample that remains after one day.
During the dehydration reaction when acetaldehyde was reacted with KOH in ether, an intermediate was formed. What was this intermediate that was eventually converted to the final product?
nicotine a component of tobacco is composed of c h and n. a 12.075 mg sample of nicotine was combusted producing 32.757
Why is 2-naphthol soluble in sodium hydroxide? Q.3 why is o-toluic acid soluble in sodium bicarbonate?
The activity of the antibiotic penicillin slowly decomposes when stored in a buffer at pH 7.0, 298K. The time dependence of the penicillin antibiotic activity
The second-order reaction, 2 Mn(CO)5 Mn2(CO)10 has a rate constant equal to 3.0 x 109 M-1s-1 at 25°C. If the initial concentration of Mn(CO)5 is 1.0 x 10-5 M.
What is the percent by mass of NaHCO3 in a solution containing 50 g of NaHCO3 dissolved in 400 mL of H2O?
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