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Using only the common 20 amino acids, how many differnt 4-amino acid-long polypeptides could be made?
a. 4^20
b. 80 (=4 x 20)
c. 20^4
A 952 cm3 container of gas is exerting a pressure of 108 kPa while at a temperature of 48 oC. Calculate the pressure of this same amount of gas in a 1236 cm3 container at a temperature of 64 oC
what is the molarity of a solution prepared by adding 132 grams potassium chloride to enough water
Now if your lab partner needed 7.030 x 1019 molecules of Sodium cyanide (NaCN), how many milligrams would you need to weigh out?
The water level in a graduated cylinder was at 211 rises initially it raised to 270 after adding a piece of lead is submerged. Determine the mass in grams of the lead?
What is the molarity of a solution prepared by dissolving 72.0 g of HCI in enough water to make 500 ml of solution.
Suppose that 347 mL of argon is collected over water at 25 ?C and 715 torr. Compute the volume of the dry argon at STP. The water partial pressure at 25 ?C is 23.8 torr.Answer in units of mL
An aerosol spray can with a volume of 456 mL contains 3.09 g of propane gas (C3H8) as a propellant. If the can is at 23°C, what is the pressure in the can? What volume would the propane occupy at STP?
a solution of lactic acid, HC3H5O3, on a laboratory shelf was undetermined concentration. If the pH of the solution was found to be 2.51, what was the concentration of the lactic acid?
What is the volume in the beaker with the aqueous solution NaCl of when equilibrium is attained, assuming ideal behavior? Part C: What is the volume in the beaker with the aqueous solution of a nonvolatile nonelectrolyte when equilibrium is attain..
What mass of AlCl3 can be formed from 5.000 mol NiCl2 and 2.000 mol Al?
What is defined as the number of atoms surrounding an atom in a crystal lattice and indicate how tightly the atoms
why are elements such as Hg, As, Bi, Sb and others first converted to their hydrides prior to sample analysis by Atomic Absorption Spectroscopy?
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