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A 30.00 mL solution of potassium nitrate (KNO3) was diluted to 125.0 mL, and 25.00 mL of this solution were then diluted to 150.0 mL. The concentration of the final solution is 0.00307 M. Calculate the concentration of the original solution.
Suppose 50.0 ml of 0.25 m COCL2 solution is add to 25.0ml of 0.350 m NiCl2 solution calculate the concentration, in moles per liter , of each of the ions present after mixing . assume that the volumes are additive.
Hardness in groundwater is due to the presence of metal ions, primarily Mg2 and Ca2 . Hardness is generally reported as ppm CaCO3 or mmol/L Ca2 . To measure water hardness, a sample of groundwater is titrated with EDTA,
calculate the final temperature of the water after all the ice melts. heat capacity of H2O: 37.7 J/mol*k heat capacity of H2O l: 75.3 J/mol*k enthalpy of fusion of H2O: 6.01 kJ/mol
If 10.7mL of .105 M NaOH is required to reach the first equivalence point of a solution of citric acid, how many mL of NaOH are required to completely neutralize this solution
Calculate the ratio of dihydrogen phosphate to hydrogen phosphate in the blood at pH 7.4. The Ka = 6.3 x 10 -8 5. For a weak acid with a pKa of 6.0 calculate the ratio of conjugate base to acid at a pH of 5.0.
Our stock solutions are 0.2M EDTA, 0.04 M NaF and 1.2 M potassium phosphate. What volumes of the stock solutions should be measured?
Calculate the number of bromine molecules present in the flask if A flask contains 0.350mol of bromine, Br2 in liquid form .
Complete and balance the following redox equation that occurs in acidic solution using the set of smallest whole-number coefficients. What is the sum of all the coefficients in the equation
Mixtures of helium and oxygen are used in scuba diving tanks to help prevent the bends, which is a condition caused by nitrogen bubbles forming in the bloodstream.
An aqueous solution i s10.0% glucose by mass and has a density of 1.039g/ml at 20 degree Celsius. Calculate the freezing point and the normal boiling point of this solution
Consider the following reaction: 2A + B → 3C + D If 63.0 mol A and 42.0 mol B react to form 54.0 mol C. What is the percent yield of this reaction.
a hybrid electric vehicle, has an EPA gas mileage of 52 mi/gal in the city. How many kilometers can the Prius travel on 15 liters of gasoline?
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