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Choose the amino acid in the following pairs that would be more likely to appear on the solvent-eexposed surface of a protein.
A. His or Pro
B. Ser or Ala
C. Phe or Tyr
D. Met or Cys
E. Asn or Ile
A mixture containing 2.01 g each of CH4(g), C2H4(g) and C4H10(g) is contained in a 1.50 L flask at a temperature of 25°C. (a) Calculate the partial pressure of each of the gases in the mixture.
Phosphorus is combined with chlorine to give PClz a gaseous compound .calculate the value of z If you start with 2.097g of P and isolate 9.298g of PCLz .
Calculate the mass of silver chloride in grams required to make 5.6 grams of silver plating?
Carbon Monoxide is a toxic pollutant found in our city air. On a particular day, the air contains 6.50mg of CO per 1.000X cubic meter of air. How many grams of CO are present in a room whose dimensions are 15.0 meters X 11.0 meters X 16.5 meters?
A 250.0-L cylinder contains 65.0% He(g) and 35.0% Kr(g) by mass at 25.0° C and 1.35 atm total pressure. What is the partial pressure of He in this container?
Calculate the partial pressure of ozone and the number of ozone molecules per liter of air if the tempreture and pressure were 20.0 degrees C and 758 mmHg, respectively.
Given an unknown monoprotic(one hydrogen) acid. Make a 100 mL solution with 20% by volume. (mix 20 mL acid with 80 mL water) and titrate with NaOH. You must find the concentration of it the weak acid.
If I add 1.65 L of water to 112 grams of sodium acetate what is the molality of NaC2H3O2 in this solution?
do not specify stereochemistry. (The absolute stereochemical configurations of chiral substances cannot be determined from the data.)
Propose a reasonable reaction mechanism for the sodium hypochlorite oxidation of 3-heptanol. Give the IUPAC name of the expected product. What other oxidizing agents may be used to carry out this oxidation
Determine what is element Y if you have a compound consists of element "Y" and H, only and know that it is 79.89% element Y by mass. Each molecule has 3.00 times as many H atoms as Y atoms?
If you are given a 0.33 g piece of sodium metal to react with water, how many moles of HCl would it take to neutralize the sodium hydroxide produced?
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