Chemistry problems in picture lots of points if you can help me solve any of these :)

Predict the products butane (c4h10) + oxygen —>

How do you lengthen a pattern piece? (family and consumer science, sewing)

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.