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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?
T/F As temperature increases, the average kinetic energy of a sample of gas molecules decreases.T/F At constant temperature, the heavier the gas molecules, the larger the average velocity.T/ F Real gas molecules have a volume and exert attractive for..
What is the boiling point of a solution produced by adding 510g of cane sugar (molar mass 342.3g/mol ) to 2.1kg of water. For each mole of nonvolatile solute, the boiling point of 1kg of water is raised 0.51 degrees celsius.
A 3.00 L container at 25 C contains 0.464 atm of CO2. When graphite is added to the container, some CO2 is converted to CO and at equilibrium the total pressure is 0.746 atm.
Why does the absolute refractory period occur and What is happening in the cell.
draw the skeletal structure of the organic species containing the carbonyl functionality needed to form
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Calculate the equilibrium compostion when 1.00 mol N2 is mixed with 3.00 mol H2 in a 2.00 L vessel.
Determine the balanced chemical equation for this reaction. CaH18(g) + O2(g) > Ca2(g) + H2O(g) Enter the coefficients for each compound in order, separated by commas
Calculate the pH during the titration of 34.5 mL of 0.507 M triethylamine, (C2H5)3N with 0.148 M HCl after 13.0 mL of the acid have been added. Kb of triethylamine = 5.2 x 10-4.
Number of Moles and Conversion, a) Number of moles of carbon atoms in 0.585 moles C4H10
How many grams (g) of calcium phosphide should be dissolved in 501.5 g water to produce a solution that freezes at -1.894 ºC? Kf = 1.86 ºC/molal. Use the ideal van't Hoff factor.
What is the pH of a solution made of 10 mL of 0.1 M Nh3 (aq) (K = 1.8 X 10^-5) when mixed with 10 mL of 0.1 M NH4Cl
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