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Suppose you have a sample of NaOH (0.0315 L, to be exact). If this amount of NaOH is used to exactly titrate 0.0250 L of HCl that has a concentration of 0.105 M, what is the molarity of the NaOH?
Calculate the percent ionization of phenol (HC6H5O) in solutions of each of the following concentrations (Ka = 1.3e-10.) (a) 0.181 M % (b) 0.482 M % (c) 0.733 M %
the carbon dioxide that is exhaled by astronauts who are on a space shuttle is scrubbed by pumping the air through
A double sided magnetic disk pack has six disks. Can you tell how many surfaces of this pack are normally used?
When solution of silver nitrate, AgNO3, and calcium Iodide, Cal2, are mixed, a yellow precipitation of silver iodide is formed. Calculate the mass of silver iodide that is formed in 50 mLof 1.00 M AgNO3 is combined with 30 mL of 1.25 mL CaI2.
We will abbreviate malonic acid, CH2(CO2H) 2 as H2M. Find the pH and concentrations of H2M, HM-, and M2- for the following. (Ka values for malonic acid are Ka1 = 1.42 10-3 and Ka2 = 2.01 10-6.)
Ammonium will react with oxygen in the presence of a copper catalyst to form nitrogen and water. At 179 C, the rate constant is 0.602 hr-1g-1 and at 160.5 C, the rate constant is 0.151 hr-1g-1. What would you expect the rate constant to be at 195...
silver (I) perchlorate into a 50.ml volumetric flask and filling the flask to the mark with water. calculate the concentration in mol/L of the silver (I) perchlorate soluation
If the theoretical yield for a reaction was 156 grams and I actually made 122 grams of the product, what is my percent yield
Pyruvic acid, HC3H3O3, is involved in cell metabolism. It can be assayed for (that is, the amount of it determined) by using a yeast enzyme. The enzyme makes the following reaction go to completion.
The characteristic odor of pineapple is because of ethyl butyrate a compound containing carbon, hydrogen, and oxygen. Combustion of 1.39mg of ethyl butyrate produces 1.29mg of H2O and 3.16mg of CO2. Explain what is the empirical formula of the com..
Magnesium oxide decomposes into magnesium and oxygen. If 16.12 of magnesium oxide decomposes to form 9.72 of magnesium, what mass of oxygen gas is also released in the reaction
What is the volume of the air space when the bell has been lowered to a depth of 50m? Take the density of sea water to be 1.025gcm^-3 and assume that the temperature is the same as on the surface
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