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The pH indicator bromothymol blue turns yellow when CO₂ gas is added to a
solution and blue when CO₂ is removed from a solution. In an experiment that
tests how the intensity of light affects the rate of photosynthesis by algae,
how would bromothymol blue be used?
OA. To estimate the temperature at which a solution containing algae
and the indicator turns blue under different intensities of light
OB. To determine how long it takes a solution containing algae and the
indicator to turn blue under different intensities of light
OC. To measure the volume of a solution containing algae and the
indicator when it turns yellow under different intensities of light
OD. To count the number of air bubbles in a solution containing algae
and the indicator when it turns yellow under different intensities of
light

Respuesta :

Oseni

To determine how long it takes a solution containing algae and the indicator to turn blue under different intensities of light. Option B.

Photosynthesis

During photosynthesis, green plants use their green pigments to absorb light and drive the reaction between carbon dioxide and water to produce carbohydrates. The equation is as below:

[tex]6CO_2 + 6H_2O --- > C_6H_1_2O_6 + 6O_2[/tex]

Thus, in the experimental setup, the algae will gradually consume  CO₂ to produce carbohydrates.

Since bromothymol blue turns blue from yellow when  CO₂ is removed from a solution, its function in the setup would be to indicate when all the  CO₂ has been consumed by the algae.

More on photosynthesis can be found here: https://brainly.com/question/1388366

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butterflyprincesszlw

Answer:

B. To determine how long it takes a solution containing algae and the

indicator to turn blue under different intensities of light

Explanation:

A P E X

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