文熙 asked in 科學及數學化學 · 1 decade ago

一d chem問題 3

Which of the following is the most abundant component of sea water?

A. sodium ions b. water

c. hydroixde ions d. chloride ions

When some anhydrous cobalt(II) chloride crystals are exposed to air in a raing day, they will turn

A. blue b. brown c. colourless d. pink

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2 Answers

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  • 1 decade ago
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    Which of the following is the most abundant component of sea water?

    b. water

    Water has a concentration of 53.6 mol/kg

    When some anhydrous cobalt(II) chloride crystals are exposed to air in a raing day, they will turn

    A. blue

    2007-12-29 10:56:34 補充:

    Sorry,not blue ,but pink

  • 1 decade ago

    Which of the following is the most abundant component of sea water?

    b. water

    When some anhydrous cobalt(II) chloride crystals are exposed to air in a raing day, they will turn

    d. pink

    Water turns anhydrous cobalt(II) chloride crystals pink.

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