Rate of a chemical reaction — task. Science State Board, Class 10.

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Answer variants:

$100$

$g$

$A$ : after

$20$ minutes :

$50$

$g$

$A$ is left

$100$

$g$

$A$ : after

$20$ minutes :

$30$

$g$ of

$A$ is left

1. Fastest reaction:

2. Slowest reaction:

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