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Calculate the pH if 0.03 mol HCl is added to 0.500 L of a buffer solution that is 0.24 M NH3 and 0.20 M NH4Cl ? For NH3 Kb= 1.8 x 10-5.
based on molecular structure arrange each of the following sets of molecules in order of increasing acidity. explain
What will happen to the pressure if 1 mole of N2 gas is added to the container while keeping the temperature and size of the container the same
A sample of nitrogen gas is collected over water at a temperature of 23.0 degrees Celcius. What is the pressure of the nitrogen gas if atmospheric pressure is 785 mm Hg?
Which of the following is a neutralization reaction?
calculate the amount of energy needed in calories to heat 145 g of water from 22.3 degrees celsius to 75.0 degrees
The rate of an enzyme-catalyzed reaction usually increases with temperature, but then decreases after reaching the "optimal temperature."
When ethane (C2H6) reacts with chlorine (Cl2) the main product is C2H5Cl; but other products containing Cl (chlorine), such as C2H4Cl2, are also obtained in small quantities. The formation of these other products reduces the yield of C2H5Cl. In a ..
Comment of the fact that erythro-2,3-dibromo-3-phenylpropanoic acid undergoes elimination by an E1 pathway in water solvent, but by and E2 pathway when acetone is used as the solvent.
Calculate the number of collisions required to slow a neutron from an energy of 2.85 MeV to a thermal energy of 0.025 eV, using a moderator with an average logarithmic energy decrement of .955.
how many liters of gasoline would you need to buy to complete a 142- trip in Europe? Use the following conversions
A solution of vinegar is 4.68% by mass acetic acid in water. Assuming the density of vinegar is 1.00 g/mL , what is the molarity of the acetic acid.
how many calories of heat must be added to raise the temperature of 40 g of water fro 25 Celsius to 50 Celsius
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