An experiment carries out the reaction a → products at three different initial concentrations of a and the initial reaction rate were measured, as indicated in the table. [a](m) initial rate (m/s) 0.15 0.010 0.30 0.040 0.45 0.090 based on this data, what is the rate law for the reaction? view available hint(s) an experiment carries out the reaction at three different initial concentrations of and the initial reaction rate were measured, as indicated in the table. initial rate 0.15 0.010 0.30 0.040 0.45 0.090 based on this data, what is the rate law for the reaction? rate = k[a]2 rate = k[a]3 rate = k[a] rate = k

First lets tabulate the data
                 [a]                              rate  (m/s)
              0.15                             0.010
              0.30                             0.040
              0.45                             0.090            
x - order of reaction with respect to a
since a is the only reactant, the order with respect to a is the order of the reaction 
rate equation;
Rate = k [a]ˣ
where k - rate constant 
substituting rate values and [a]
0.010  = k[0.15 ]ˣ1)
0.040  = k [0.30]ˣ2)
divide 2 by 1
4 = 2ˣ
x = 2
therefore order with respect to a is 2
this is therefore a second order reaction 
Rate = k [a]²

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.