A)The rate constant for a certain reaction is k = 3.20Ã10â3 sâ1 . If the initial reactant concentration was 0.400 M, what will the concentration be after 13.0 minutes?

B)A zero-order reaction has a constant rate of 4.10Ã10^â4M/s. If after 45.0 seconds the concentration has dropped to 5.00Ã10^â2M, what was the initial concentration?

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1)The rate constant for a certain reaction is k = 6.90Ã10â3 sâ1 . If the initial reactant concentration was 0.950 M, what will the concentration be after 14.0 minutes?

2)A zero-order reaction has a constant rate of 3.00Ã10â4 M/s. If after 65.0 seconds the concentration has dropped to 8.00Ã10â2 M, what was the initial concentration?

The reactant concentration in a zero-order reaction was 0.100 M after 120 s and 3.50Ã10^â2M after 345 s . What is the rate constant for this reaction?

What was the initial reactant concentration for the reaction described in Part A?

The reactant concentration in a first-order reaction was 9.60Ã10^â2M after 10.0 s and 7.30Ã10^â3M after 75.0 s . What is the rate constant for this reaction?

The reactant concentration in a second-order reaction was 0.100 M after 265 s and 7.20Ã10^â2M after 895 s . What is the rate constant for this reaction?

Part A The reactant concentration in a zero-order reaction was 5.00Ã10â2 M after 190 s and 3.50Ã10â2 M after 370 s . What is the rate constant for this reaction? Express your answer with the appropriate units.

Part B

What was the initial reactant concentration for the reaction described in Part A?

Express your answer with the appropriate units

Part C

The reactant concentration in a first-order reaction was 8.80Ã10^â2M after 20.0 s and 7.10Ã10^â3M after 60.0 s. What is the rate constant for this reaction?

Express your answer with the appropriate units.

Part D

The reactant concentration in a second-order reaction was 0.650 M after 190 s and 1.60Ã10^â2M after 855 s . What is the rate constant for this reaction?

Express your answer with the appropriate units. Include an asterisk to indicate a compound unit with mulitplication, for example write a Newton-meter asN*m.

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