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What is the % barium in an alloy if it takes 22.0 mL of 0.875M sulfuric acid solution to react with all the barium in a 7.59 g sample of the alloy
For the titration of 25.0 mL of 0.20 M hydrofluoric acid with 0.20 M sodium hydroxide, determine the volume of base added when pH is 3.15
A sample containing both enantiomers is found to have an observed rotation of +0.87 degrees in a one dm tube at a concentration of 0.025 g/mL. What is the optical purity of the sample? What is the % of the dominant enantiomer in this sample?
Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.052 moles of sulfuric acid is mixed with water to make 179 mililiter of solution, what is the molarity of H+?
potassium fluoride has a solubility of 92g of KF in 100 g of H2O at 18 degrees C. which of the following are saturated solutions and unsaturated solutions at 18 degrees C: a)46 g of KF and 100 g of H2O. b)46 g of KF and 50 g of H2O. c)184g of KF a..
Calculate the average molecular weight of a gaseous mixture with the following composition on a mole % basis: CH4= 30%, H2= 10% and N2= 60%.
What is the pH when 100 mL of 0.1 M HCl is titrated with 50 mL of 0.2 M NaOH?
In an acid-base titration 14.7 mL of .107M NaOH (aq) sodium hydroxide is needed to react to an end point with .1252 grams of H2C2O4 oxalic acid. Determine the molarity of the aqueous sodium hydroxide solution. 2NaOH + H2C2O4 ----> 2HOH + Na2C2O4
Five potential structures belonging to point groups Oh,D3h,D6h,D2h and D3d. Sketch geometries that are consistent with the possible point groups?
Sodium borohydride is a strong base as well as a reducing agent. Why would it be better to add the NaBH4 solution to a base-sensitive substrate
A lead fishing weight with a mass of 68 g absorbs 146 cal of heat. If its initial temperature is 56°C, what is its final temperature.
On the basis of the solubility rules, write a balanced molecular equation for the precipitation reactions that take place when the following aqueous solutions are mixed. If no precipitation reaction is likely for the reactants given
Calculate the mass defect in Fe-56 if the mass of an Fe-56 nucleus is 55.921 amu. The mass of a proton is 1.00728 amu and the mass of a neutron is 1.008665 amu.
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