• 2022-06-07 问题

    Which of the following will you classify as bases? A: ammonium hydroxide B: potassium hydroxide C: ammonium chloride D: nitric acid E: sodium phosphate F: calcium chloride G: carbon dioxide H: calcium carbonate I: calcium oxide J: silicon dioxide

    Which of the following will you classify as bases? A: ammonium hydroxide B: potassium hydroxide C: ammonium chloride D: nitric acid E: sodium phosphate F: calcium chloride G: carbon dioxide H: calcium carbonate I: calcium oxide J: silicon dioxide

  • 2022-06-07 问题

    Which of the following will you classify as acids? A: sufuric acid B: nitric acid C: ammonium hydroxide D: sodium phosphate E: calcium chloride F: carbon dioxide G: calcium carbonate H: calcium oxide I: silicon dioxide J: potassium hydroxide

    Which of the following will you classify as acids? A: sufuric acid B: nitric acid C: ammonium hydroxide D: sodium phosphate E: calcium chloride F: carbon dioxide G: calcium carbonate H: calcium oxide I: silicon dioxide J: potassium hydroxide

  • 2022-06-16 问题

    A solution whose hydroxide concentration is 10-8 M, the pH of the solution is A: 5 B: 6 C: 7 D: 8

    A solution whose hydroxide concentration is 10-8 M, the pH of the solution is A: 5 B: 6 C: 7 D: 8

  • 2022-06-09 问题

    Ferric hydroxide forms a positively charged colloid. Which of the following ionic substances should be most effective in coagulating the colloid? ( ) A: NaCl B: CaCl2 C: Fe2(SO4)3 D: K3PO4

    Ferric hydroxide forms a positively charged colloid. Which of the following ionic substances should be most effective in coagulating the colloid? ( ) A: NaCl B: CaCl2 C: Fe2(SO4)3 D: K3PO4

  • 2022-06-04 问题

    Which of the following is most likely the basic process attended to and adjusted by acid-base mechanisms in the body? A: Generation of hydrogen ions in the body B: Generation of hydroxide ions in the body C: Pumping out of potassium ions from cells D: Generation of chloride ions in the stomach

    Which of the following is most likely the basic process attended to and adjusted by acid-base mechanisms in the body? A: Generation of hydrogen ions in the body B: Generation of hydroxide ions in the body C: Pumping out of potassium ions from cells D: Generation of chloride ions in the stomach

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