question is in the description

Question

The decompostion of N2O5 can be described by the quation, 2N2O5(soln)->4NO2(soln) + O2(g)consider the data table for the reaction at 45 degrees celcius in carbon tetrachloride

Data table:

t(s)  N2O5 (M)

0                                   2.583

215                               2.256

486                               1.903

745                               1.617

Given the data, calculate the average rate of reaction for each successive time interval.

What is the average rate of reaction for the time interval from 0s to 215s ?

average rate of reaction:

What is the average rate of reaction for the time interval from 215s to 486s ?

average rate of reaction:

Ms

What is the average rate of reaction for the time interval from 486s to 745 s?

average rate of reaction:

Ms

I had gotten, 0.00152, 0.00130, and 0.0010

Answer 1

Your first term is correct: .00152 mole/liter-s (numbers withiut units don't mean anything in science. Depending on the convention you use in class, the value could be negative as material is disappearing.

2nd term is correct. You seem to be doing the right thing.