What's the molecular geometry for butanol? PLEASE ANSWER ASAP

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

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.

May someone me with these science questions