Concentration data is commonly monitored during a reaction to determine the order with respect to a reactant. Consider the types of observations listed, and determine which order is likely for that reactant. Assume all other factors are held constant. The reaction rate is constant regardless of the amount of reactant in solution: Choose: first order, second order, or zero order.   The reaction rate increases in direct proportion to the concentration of the reactant in solution: Choose: first order, second order, or zero order.   An increase in the concentration of the reactant in solution causes the reaction rate to increase exponentially: Choose: first order, second order, or zero order.

The rate of a certain reaction was studied at various temperatures. The table shows temperature (?) and rate constant (?) data collected during the experiments. Plot the data to answer the questions. What is the value of the activation energy, ?a , for this reaction? What is the value of the pre‑exponential factor (sometimes called the frequency factor), ? , for this reaction? Temperature (K)      k (s^-1)    400                           0.0000173 580                            7.43

I need help with both of the blank spaces with correct significant figures

If a catalyst was added to this reaction, would it change, not change, increase or decrease the overall order of this reaction

If the initial reactant concentration of a first order reaction is 1.60 M , what would be the concentration after 27 seconds ? Half-life = 9 s. 0.80 M 0.10 M 0.40 M 0.20 M

Consider the table of data collected for the reaction A → Products. Determine the magnitude (value) of the reaction rate constant by graphing the data appropriately. Time (s) [A](M) 0 0.5 1.5 0.42 3 0.335 4.5 0.25 6 0.17 7.5 0.085 9 0.003