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The C-H stretch of chloroform, CHCl3, is observed at 3020cm^-1. Assuming the reduced mass associated with the stretch equals the mass of the hydrogen atom, preduct the frequency of the C-D stretch of CDCl3. Provide an explaination of why this stretch is actually observed at 2256cm-1.
How many stereoisomers are possible for each of the following substances? Draw them, and name each by the R-S and E-Z conventions.
The average speed of a nitrogen molecule at 20oC is 515 m/sec. How many minutes will it take the nitrogen molecule to cover exactly 20 km?
Write the net ionic equations for the reactions.
A sample of gas at 47°C and 1.03 atm occupies a volume of 2.20 L.What volume would this gas occupy at 107°C and 0.789 atm?
Concentration of NADH was found by using beer's law using 6.22 mM cm-1 as extinction coefficient. Concentration of NADH = .0212 mM. Moles of NADH that are present in 1.02 mL sample was found by : .0212 mM x 1.02 mL = .021624 mM/mL
A 2.914-g sample gypsum, a hydrated salt of calcium sulfate, CaSO4, is heated at a temperature greater than 170 C in a crucible until a constant mass is reached.
If 21 mL of 6.0 M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid?
Determine the numbers of oxygen molecules are required for each molecule of C 6 H 12 O 6 glucose that is oxidized if Glucose is oxidized by molecular O 2 to CO 2 and H 2 O?
How many grams of sodium bromide must be added to 309 grams of water in order to prepare a 0.108 molal sodium bromide solution?
What is the ee?, The optical rotation of a compound is -165. What is the ee for a solution mixture with a measured rotation of -50?
At what tempature should 0.5 moles of nitrogen be held to maintain a pressure of 125 kpa in a 1.0L closed sealed container
a weather ballon filled with helium has a volume of 1.0*10^-4L at 1.00 atm and 30.0C. it ascends to an altitude at which the pressure is only 0.60 atm and the temperature is -20.0C. what is the volume of the ballon at the higher altituda.
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