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Question about Understanding molecular behaviour.Are the following statements true or false? If false, explain why.
a) In most globular proteins, the nonpolar amino acids tend to be concentrated at the surface of the protein.
b) A small organic molecule required by an enzyme in order for the enzyme to be a functional catalyst is known as a vitamin.
c) Lipids that are solids at room temperature tend to have more double bonds than liquids at room temperature.
One a cold day a person takes a breath of 450 ml of air at a pressure of 745 mm Hg and room temperature of 21oC. What is the volume of this air in the lungs at 37oC and 758 mm Hg?
This assignment inhibits chemistry Laboratory Questions.
how many liters of O2 can be made from 342 g H2O2 if the density of O2 is 1.428 g/L?
What mass of H2O is required to form 1.3L of O2 at a temperature of 320K and a pressure of 0.957atm.
determine the molecule weight of the liquid and the density of the vapor under these condition?
55.0 mL of a 1.70 M solution is diluted to a volume of 278 mL. A 139 mL portion of that solution is diluted using 175 mL of water. What is the final concentration.
A power company burns approximately 474 tons of coal per day to produce electricity. If the sulfur content of the coal is 1.30% by weight.
Does purified aspirin appear to be purer than crude aspirin? What is your evidence?
A zero-order reaction has a constant rate of 3.20×10-4 . If after 60.0 seconds the concentration has dropped to 6.50×10-2 , what was the initial concentration?
In an oxidation-reduction reaction, it required 25.6 ml of a 0.65 M potassium permanganate solution to reach the equivalence point with 15.0 mL of an iron(II) sulfate solution.
3.5 g of a hydrocarbon fuel is burned in a vessel that contains 250. grams of water initially at 25.00 C. After the combustion,the temperature of the water is 26.55 C.
Consider the following reaction: NH4HS(s) NH3(g) + H2S(g) An equilibrium mixture of this reaction at a certain temperature was found to have [NH3]=.278M and [H2S]=.355M.
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