The US Environmental Protection Agency (EPA) places limits on the quantities of toxic substances that may be discharged into the sewer system. Limits have been established for a variety of substances, including hexavalent chromium, which is limited to 0.50 mg/L. If an industry is discharging hexavalent chromium as potassium dichromate (K2Cr2O7), what is the maximum permissible molarity of that substance?

Q: In the laboratory you are given the task of separating Ag* and Ba2* ions in aqueous solution. For…

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Q: Question 89, Chapter 5 of General Chemistry 11th Edition, by Petrucci. The active ingredients in a…

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A: N - Na2SO4 Y - NaOH ( Ca(OH)2 - white precipitate and Ba(OH)2 - no precipitate ) N - KBr

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A: yeah its correct  i guess go ahead

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Q: the mass percentage composition of the elements in caffeine, C8H10N4O2.

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Q: Question in image

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Q: In the laboratory you are given the task of separating Ag* and Zn* ions in aqueous solution. For…

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