Hello! :) help, please

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

What type of electromagnetic radiation has a shorter wavelength than blue light

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.