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The flask shown here contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.300 M NaOH.
A. What volume of NaOH is needed to reach the end point of the titration?
B. What was the initial concentration of HCl?
How much heat is evolved when 233 g of ammonia gas condenses to a liquid at its boiling point?
the concentration of NO in teh vessel is 0.161 M. At equilibrium the vessel contains N2, H2O, and H2. What is the value of the equilibrium constant Kc for the following reaction? 2H2 (g) + 2NO(g) 2H2O (g) +N2 (g)
Sketch bonding orbitals that result from combinations of the following orbitals on separate atoms (a) pz and dz2 (b) s and pz (c) dx2-y2 and dx2-y2
What are the potential effects of exposure to nitric acid? Consider all different modes of exposure listed on the MSDS.
Based on the functional group(s) present in the two compounds, determine 3 physical properties for each of the two compounds. Using these physical properties determine how each of the two compounds uniquely function in the products in which they ar..
Assume that the electrode follows the Nernst equation, the temperature is at 25°C, and that the activity coefficient of X is 1.
115 mL of H_2O is initially at room temperature 22 0C. A chilled steel rod at 2 0C is placed in the water. If the final temperature of the system is 21.1 0C, what is the mass of the steel bar.
How many hemoglobin molecules are there in an average red cell? Assume that the molecular weight of the human hemoglobin tetramer is 65 kd. (The answer is 2.74x10^8, but I don't know how to calculate it)
discuss the various ways that the Fischer esterification reaction can be run to maximize conversion to ester.
Consider a sample of helium gas at 28 C with a volume of 3.80 L at a pressure of 3.15 atm. The gas expands to a volume of 9.50 L and the gas is heated to 43 C
Calculate the final temperature of 33 mL of ethanol initially at 13 degrees Celsius upon absorption of 657 J of heat. (density of ethanol =0.789 g/mL).
If the pressure exerted by ozone, O3, in the stratosphere is 3.0*10^-3 atm and the temperature is 250 K, how many ozone molecules are in a liter?
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