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Calculate the pH of the following solution made from .210 M in pyridime (C5H5N) and .350 M in pyridime chloride (C5H5NHCl). Kb: 1/7 x 10^-9
If the reaction is allowed to proceed until all substances have reached their equilibrium concentrations, determine delta G for the reaction.
A hot air balloon is inflated to its full extent by heating the air inside it. In the final stages of this process the volume of the balloon changes from 4.00 x 10^6 L to 4.50 x 10^6 L by addition of 1.3 x 10^8 J of energy as heat.
What is the hydronium ion concentration of a 0.20 M solution of an acid with a Ka
what is the molarity of a solution prepared by dissolving 2.06g of NaOH in a volume of 500.0ml?
a sample of gaseous SiH4 weighing 0.425g is placed in a 580 mL container. The resulting pressure is 0.61 atm.What is the temperature in degree celsius.
What is the molarity of a solution made by dissolving 5.69 g of sodium acetate in water and diluting to 750. mL? (molar mass NaC2H3O2 is 82.0 g/mol.)
What are the active ingredients & determine what possible tests to perform to identify each active ingredient. (what is the expected result?) - can't use melting points, boiling points, burning of solids, benedict's solution and tasting.
Water has seeped through the pore spaces in the glass cup. 4. The relative humidity of the air near the glass cup is approaching 0 percent. 5. The dew point temperature was not reached.
A tank is first evacuated, and then connected to a 75.0 L cylinder of compressed nitrogen gas. The gas pressure in the cylinder, originally at 15.8 atm, falls to 1.05 atm without a change in temperature. What is the volume of the tank?
4. How many grams of NaNO3 would you add to 250g of H2O in order to prepare a solution that is .500 molal in NaNO3?
When a 2.50 L flask containing 1.00 atm of gas A is joined with a 0.500 L flask containing 0.750 atm of gas B, and the stopcock between the flasks is opened, and the gases are allowed to mix thoroughly
what is the concentration M of a NaCl solution prepared by dissolving 15.3g of NaCl in sufficient water given 455mL of solution?
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