What is the hydronium ion concentration in an aqueous hydrochloric acid solution that has a pOH of 10.700? [H3O+] = M I

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What is the hydronium ion concentration in anaqueous hydrochloric acid solution thathas a pOH of 10.700?[H3O+] = M
In the laboratory, a studentdilutes 26.3 mL ofa 6.25 M perchloricacid solution to a total volumeof 300.0 mL. What is the concentrationof the diluted solution? Concentration = M
In the laboratory, a studentadds 50.8 mL of waterto 28.5 mL ofa 0.594 M nitricacid solution. What is the concentration of thediluted solution? Assume the volumes areadditive. Concentration = M
In the laboratory, a studentdilutes 23.5 mL ofa 9.02 M nitricacid solution to a total volumeof 125.0 mL. What is the concentrationof the diluted solution? Concentration = M
You need to make an aqueous solutionof 0.220 M bariumhydroxide for an experiment in lab, usinga 125 mL volumetric flask. How muchsolid barium hydroxide should you add?____ grams
In the laboratory you dissolve 12.5 gof cobalt(II) chloride in a volumetricflask and add water to a total volumeof 500 . mL. What is the molarity of the solution? M
You need to make an aqueous solutionof 0.150 M potassiumsulfide for an experiment in lab, usinga 300 mL volumetric flask. How muchsolid potassium sulfide should you add?_____ grams
An aqueous solution of bariumhydroxide, Ba(OH)2,contains 5.69 gramsof bariumhydroxide and 17.4 gramsof water.The percentage by mass of bariumhydroxide in the solution is %. Youwish to prepare 193 grams of 7.55 % solution. Youwill need grams of cobalt(II) chloride and mLof water. Assume that the density of water is 1.00 g/mL.
How many grams of K2S arethere in 196 grams of an aqueoussolution that is 9.57 % byweight K2S. ____ g K2S