Could a mixture be made up of only elements and no compounds? explain.

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.

How can the periodic table be used to predict the behavior of elements?

Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c