life science

Investigation to determine whether expired air contains carbon dioxide
how should state the method,step by step for the experiment

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  1. Formulate a hypothesis for this investigation

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  2. carbon dioxide is present in expired air

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  3. state the aim of this determine whether expired air contains carbon dioxide

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  4. formula a hypothesis for this investigation of to determine wether expired air contains carbon dioxide.
    Apparatus are two beakers/test tubes/straws,two drinking straws and clear lime water

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  5. I doooont kknow

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  6. the hypothesis is the test that expired air contains carbon dioxide

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  7. Formulate a hypothesis for this investigation

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