HELP ME!! Draw the structure of 5-Butyl-2,2-dimethylnonane. NO LINK PLS

In this reaction n2o4(g)→2no2(g) what changes in color would you expect as pressure is increased at a constant temperature

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.

The footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils