Calculate the mean rate of reaction between 30 and 250 seconds for coarse manganese dioxide lumps. Use the figure and the equation: Give your answer to 3 significant figures. Volume of oxygen formed – 6128

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Q1.

Calculate the mean rate of reaction between 30 and 250 seconds for coarse manganese dioxide lumps. 

Use the figure and the equation:

Give your answer to 3 significant figures. 

Volume of oxygen formed ______________________________________ 

Time taken ________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________________________________________

Mean rate of reaction = _______________________________ cm3 /s (4)

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One thought on “Calculate the mean rate of reaction between 30 and 250 seconds for coarse manganese dioxide lumps. Use the figure and the equation: Give your answer to 3 significant figures. Volume of oxygen formed – 6128”

  1. The volume of oxygen formed was:
    58 cm³ − 20 cm³ = 38 cm³
    The time taken was:
    250 s − 30 s = 220 s
    Rate of reaction = volume ÷ time =
    38 ÷ 220 = 0.1727 cm³/s
    0.173 cm³/s

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