Question: please answer both parts :) reactant concentration was 0.900M, what will the concentration be after 20.0 minutes? Express your answer with the appropriate units. A

please answer both parts :) reactant concentration was 0.900M, what will the concentration be after 20.0 minutes? Express your answer with the appropriate units. please answer both parts :)

reactant concentration was 0.900M, what will the concentration be after 20.0 minutes? Express your answer with the appropriate units. A zero-order reaction has a constant rate of 2.20104M/s. If after 65.0 seconds the concentration has dropped to 5.50102M, what was the initial concentration? Express your answer with the appropriate units

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