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1. The concentration of H3O in your stomach is 0.012 M. What is the pH of your stomach?
2. Write the balanced reaction when nitric acid and potassium hydroxide react together.
3. Write the balanced reaction when potassium bicarbonate reacts with sulfuric acid.
4. If 50.0 mL of a 0.120 M solution of sulfuric acid is titrated with 0.150 M sodium hydroxide, then how many mL of sodium hydroxide will be used?
5. What product results from alpha emission by 244-Pu?
6. What isotope would produce 84-Kr after emitting a beta-particle?
7. The half-life of 208-Po is approximately 3.00 years. When it decays, it emits an alpha particle and produced 204-Pb as a product. If you had 15 grams of 208-Po today, then how many grams of 204-Pb would you have after nine years?
A mole of carbon atoms has a mass of 12 grams, and a mole of magnesium atoms, 24 grams. What is the mass ratio of a single carbon atom to a single magnesium atom?
A 200 mL volume of 1.28 M Ba(NO3)2 is diluted with water to a volume of 2.00 L, calculate the molarity (M) of NO3- in the new solution. Molar Mass (g/mol) Ba(NO3)2 261.34 NO3- 62.004 Ba2+ 137.33
The MnO4(-) is often used to analyze for the Fe(2+) content of an aqueous solution via the reaction MnO4(-)+Fe(2+)---> Fe(3+)+Mn(2+) in acidic solution. What is the ration Fe(2+):MnO4(-) in the balanced equation
What mass of Na2CrO4 is required to precipitate all the silver ions from 96.0 mL of a 0.650 M solution of AgNO3
Construct a plot of the Gibbs free energy of this system as a function of partial pressures of BrCl as the reaction approaches equilibrium.
Being that the active ingredient is Mg(OH)2, which decomposed to form Mg2+ and OH- ions. What are the two ways to increase solubility of Mg(OH)2 either before you take it or when it gets in the stomach
If the volume of the flask is presumed to be 125mL instead of the measured volume, would the computed molar mass of the liquid be too high or else too low or unaffected by the experimental error
Show a completely different, good way to make product B above, starting from benzene. The method should not involve halogenations of the ring.
Calcium carbonate CaCO3 reacts with stomach acid HCL according to the following equation: CaCO3 + HCl --- CaCl2 + H2O + CO2. Tums, antacid, contains CaCO3. If tums is added to 20.0 mL of 4.00M HCl, How many grams of CO2 gas are produced.
What is the rate of change of [D] in M/min?
Why is the identity of a gas not included in the combined and ideal gas law? Please give example.
The ternary compounds called chlorofluorocarbons, or Freons, have proved to be very valuable as refrigerants and as cleaning agents for circuit boards. Unfortunately, in the atmosphere these compounds produce chlorine atoms that catalyze the decom..
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