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A solution is prepared by placing 22.9 g of KCl in a 0.800 Lvolumetric flask and adding water to dissolve the solid, then filling the flask to the mark. What is the molarity of an AgNO3 solution if 40.6 mL of the KCl solution reactexactly with 34.0 mL of the AgNO3 solution?
a buffer is created by mixing 26 mL of 3.3M sodium formate and 16 mL of 3 M formic acid. What is the capacity of the buffer if 0.2 M NaOH is added?
A sample of compound B having an unknown concentration is measured to have an absorbance of 0.90 in a 1.00 cm path length cell at 500 nm. What is the concentration of B in this sample, assuming Beer's Law holds
when NaOH is added to this solution, a white precipitate forms. Using an equation, provide the identity of the white precipitate and explain its formation.
Complete and Balance the following redox equation. MnO4 + H +Br-->Mn2 +Br2 +H2O (acidic Solution). The sum of the smallest whole number coefficients is
Silver and Gold are exceptions to the rule for transition metals and charge. What is the charge of gold and silver. What color will potassium burn in a flame
Calculate the slope of the straight line 2. What is the density of the substance 3. Briefly explain why it is more accurate to use the slope of the plot to determine the density than it is to use data from a single determination
Aqueous sulfuric acid will react with solid sodium hydroxide to produce aqueous sodium hydrogen sulfate and liquid water . Suppose 3.92 g of sulfuric acid is mixed with 2.22 g of sodium hydroxide.
A steel tank has a volume of 438 liters and is filled with 0.885 kg of Oxygen. Calculate the pressure of oxygen at 21 degrees Celsius.
Molarity is only one of many ways to express concentration. Another is percent mass per volume or %(m/v). For example, vinegar usually contains about 5 %(m/v) acetic acid(5g acetic acid/100 mL vinegar)
L ?^2=-?^2 ?^2 ?^2=(1/(?sin?^2 ?) ?/(??^2 )+1/sin? ?/?? sin? ?/??) b) For the l = 2, ml = -1 state determine the average angular momentum and the average angular momentum in the z-axis
What is the pH at the point during a titration when 30 mL of 0.200 M HCl has been added to 31 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10-5 for NH3.Answer in units of pH.
a cylindrical specimen of a brass alloy 10.0 mm 0.3937 in. in diameter and 120.4 mm 4.740 in. long is pulled in tension
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