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What is the length of a helical section of a polypeptide chain of20 residues? What is its length when it is fully extended? (Youneed to get bond lengths and angles using trig functions to get the linear length)
The yield of the reaction to form your chalcone is not quantitative. What side products might be formed from your aldol condensation?
Consider another expandable balloon is filled with nitrogen gas. The density of the gas is 1.24 g/L and the outside pressure is 1.05 atm. What is the temperature of the gas?
How many liters of O2 gas measured at 861 torr and 250.0°C are formed by the decomposition of 200. g of KClO. (You will need a balanced equation where KClO is the reactant. The other product is KCl.)
What mass of NaOH is needed to precipitate the Cd^{2+} ions from 39.0 mL of 0.550 M Cd(NO3)2 solution?
Mercury, with a freezing point of -38.8 degrees Celsius, is the only metal that is liquid at room temperature. How much heat energy must be removed from 1.00 mL of mercury at 23.0 degrees Celsius to produce solid mercury?
Amino acids with an additional COOH group in the side chain are called acidic amino acids.
A block of aluminum with a volume of 98.5cm^3 absorbs 68.4J of heat. If its initial temperature was 31.9 degrees celsius, what is its final temperature
1) How many litres of hydrogen gas will be produced by the decomposition of 90 L of water? (Assume that temperature and pressure are constant) Show ALL work.
determine the osmotic pressure of an aqueous solution containing 250 g of glucose c6h12o6 in a total volume of 1.0 l
A proton in a linear accelerator has a de Broglie wavelength of 158 pm, What is the speed of the proton?
Calculate the reaction rate for each of the three trials. Determine the order of the reaction with respect to NO2.
Calculate the freezing point and boiling point of a solution of 383 g of glucose dissolved in 400. g of water.
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