$t=0$ s$.$

$($A$)$ Calculate the values of the rate constant $k$ assuming that the reaction is first order.

What is the value of $k$ at $5s?$

What is the value of $k$ at $10s?$

What is the value of $k$ at $15s?$

What is the value of $k$ at $25s?$

$($B$)$Calculate the value of $k$ assuming that the reaction is second order.

What is the value of $k$ at $5s?$

What is the value of $k$ at $10s?$

What is the value of $k$ at $15s?$

What is the value of $k$ at $25$ s$?$

$($C$)$ Use your results from parts A and B above to decide what the order of the reaction is for your data. $($Enter $1$ or $2)$

$($D$)$ What is the concentration of $A$ at time $t=63s?$

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