Based on the volumes of solutions you mixed together for your six kinetics runs, you have found the three runs where the [h3o+ ] is constant. the values for [sn2+ ], and kexpt are as follows: species: run a , run b , run c [sn2+ ]: 0.0063 , 0.0083 , 0.0123 kexpt : 2.96e−7 , 6.69e−7 , 2.14e−6 plot in excel on the x-axis the ln [sn2+ ] and on the y-axis the ln kexpt and fit it to a linear trend line in excel. input in the field below what is exponent that [sn2+ ] is raised to in the rate law expression (this is the slope of this fit - write in exactly what excel tells you the slope is).