which of the following procedures will allow the student to determine the rate constant, k , for the reaction? responses plot ln [x] versus time and determine the magnitude of the slope. plot ln [x] versus time and determine the magnitude of the slope. plot 1/[x] versus time and determine the magnitude of the slope. plot 1/[x] versus time and determine the magnitude of, the slope. run another trial of the experiment with a different initial concentration, plot the data on the same graph, and see where the curves intersect. run another trial of the experiment with a different initial concentration, plot the data on the same graph, and see where the curves intersect. run another trial of the experiment at a different temperature, plot the data on the same graph, and see where the curves have the same slope.