What is the average for the following set of measurements? 3.1ml,2.7ml,4.6ml,1.9ml,8.7ml a.4.2ml b.21ml c.8.7ml d.3.5ml

The answer would be A. 4.2mL.

You can get the average of the measurements by adding up the measurements and dividing it by the number of measurements.

So in this case, you average will be computed as follows:

=  3.1mL+2.7mL+4.6mL+1.9mL+8.7mL  >        (Add up the measurements)
                              5                                 >       (There are 5 measurements)
 
=  21mL 
       5

=  4.2mL

1) clean up you lab area2) dispose of the chemicals as instructed by your teacher3) put everything back where it belongs unless your teacher tells you otherwise4) dispose of gloves5) wash hands with soap and water