How do i balance this chemical reaction ?

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

8. what happens to matter during a chemical reaction