Which statement describes the focus of an earthquake? It creates stress in rock.
It develops in the lithosphere.
It lies above the surface where rock breaks.
It begins about 5 kilometers below Earth’s surface.

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.

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

Draw the lewis structure for the trisulfur s3 molecule. be sure to include all resonance structures that satisfy the octet rule.