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Carotenoids are yellow, orange, and red pigments synthesized by plants. The observed color of an object is not the color of light it absorbs but rather the complementary color, as described by a color wheel such as the one shown here. On this wheel, complementary colors are across from each other.
(a) Based on this wheel, what color is absorbed most strongly if a plant is orange?
(b) If a particular carotenoid absorbs photons at 455 nm, what is the energy of the photon?
Calculate the number of moles of sodium hydroxide that will completely react with the amount of olive oil and Crisco shortening that you are using (15g olive oil and 34g Crisco).
Magnesium hydroxide is 54.87% oxygen by mass. How much oxygen is in 114 g of the compound?
Assuming that concentrated HNO3 (70% HNO3) is 16M, what is the molarity of a 1:1 HNO3:Water solution
How many moles of iron(III) hydroxide are needed to react with excess nitric acid to produce 67.0 g iron(III) nitrate
Calculate the fractional compositions 0 (HA) and 1 (A) for HEPES at pH = 7.00, 7.56, and 7.80. Assume the ionic strength is zero.
Discuss the nuclear reactions within the reactor of a nuclear power plant
question a water carbonating plant operates by providing carbon dioxide at 5.0 atm. estimate the molar concentration of
A buffer solution contains 0.10 mol of acetic acid and 0.13 mol of sodium acetate in 1.00 L. (a) What is the pH of this buffer? (b) what is the pH of the buffer after the addition of 0.02 mol of KOH? (c) What is the pH of the buffer after the addi..
Write a balanced chemical equation depicting the formation of one mole of CaCO3 from its elements in their standard states
For N2 1- draw the molecular orbital energy diagram showing electrons 2- give the molecular electron configuration 3- give the bond order for the molecule 4- predict if the molecule will be magnetic
If we build a reactor and run it under these conditions, could we ever get a lower conversion (less hydrogen) than that calculated in part (a)? Can we ever get a higher conversion? Explain.
Consider the two equilibria and their equilibrium constants: (1) 2NO2(g) ↔ N2O4(g) KC1 (2) ½N2O4(g) ↔ NO2(g) KC2
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