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7 November, 20:25

The pH indicator bromothymol blue is blue in an alkaline solution and yellow in an acidic solution. A slight increase in acidity, such as when CO2 gas is added, causes a solution with the indicator to change from blue to yellow. A solution with the indicator would be most likely to turn from yellow to blue when which combination of factors exists? A. Yeast cells and sugar are placed in the solution. B. Water plants in the solution are placed under a bright lamp. C. Algae are placed in the solution and left in a dark room. D. A person blows air into the solution through a straw.

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  1. 7 November, 22:17
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    D as the person exhales CO2
  2. 7 November, 23:58
    0
    Yeast cells and sugar are placed in the solution.

    A person blows air into the solution through a straw.

    Apex; )
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