Solve the following: a. A lab technician needs to prepare 500 mL of 0.18 M sodium hydroxide solution. How many grams of NaOH are needed? b. Concentrated aqueous hydrochloric acid is 12 M in HCl. If 1000 mL of 1.0 M HCl are needed for an experiment, how many mL of concentrated HCl must be used to prepare the diluted solution? c. Identify each ion and its concentration in the following solutions:      [a. 0.25 M CaBr2   ;  b. 0.15 M Na2SO4    ;   c. 0.10 M Na3PO4

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Q: 1.b

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