WAEC - Chemistry (2021 - No. 9)

Study the graphs below and use them to answer the question below

Study the graphs below and use them to answer the question below

Study the graphs below and use them to answer the question below

Which of the following illustrates the variation of the rate of evolution of gas from a given length of magnesium ribbon (y-axis) with an increase in the concentration of the added (x-axis)?
I
II
III
IV

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