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Write net ionic equations for the reactions that take place when aqueous solutions of the following substances are mixed. Potassium fluoride and bromic acid. Ammonium Chloride and sodium hydroxide. Sodium cyanide and ammonium bromide. Potassium hydrogen sulfate and lithium acetate. Ammonia hypochlorite and ammonia
How do you determine the charge of an electron when given the number of moles of electrons and the amount of electricity passed through the circuit?
Dissolving 3.00 g of an impure sample of CaCO3 in an excess of HCl acid produced .656 L of CO2 (measured at 20 degrees C and 792 mmHg). calculate the percent by mass of calcium carbonate in the sample. State any assumptions.
drinking water was determined in seven replicate measurements with the following results (in ppb): 1.84; 1.92; 1.94; 1.92; 1.85; 1.91; 1.97. What is the standard deviation of these measurements in ppb?
Explain why acetone in the cyclohexane would invalidate the experiment?
Calculate the amount of HCN that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×8.50ft.
formic acid is titrated with 0.50 M sodium hydroxide, calculate the pH before any of the titrant (NaOH solution) is added and after 15.0 mL of the titrant has been added.
What is the initial (before any reaction takes place) lead nitrate concentration when 4.0 mL of 0.034 M lead nitrate is added to 11 mL of 0.0052 M sodium chloride
When Methane is burned with oxygen, the products are carbon dioxide and water. If you produce 9gms of waterand 11grams of carbon dioxide from 4gms of methane only 16gms of oxygen were needed.
Indicate the concentration of each of ion present in the solution formed by mixing
If the sample of the complex ion compound that you prepared had not thoroughly dried, but contained traces of water or ethanol would this make your value of x too high or too low? Or would it not affect your results at all? Explain.
A 24.60 mL sample of 0.185 M HNO3 requires 27.35 mL of a KOH solution for complete neutralization in an acid-base titration. What is the molarity of KOH
3 State what happened when 2 drops of concentrated hydrochloric acid are added to the bromophenol blue indicator. Explain the change in terms of equilibrium.
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