Fire is combination of what? example ( water is a compound of hydrogen and oxygen)

Based on the law of conservation of energy, which statement is false? answer- energy is lost when machines dont work right

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 number at the end of an isotope’s name is the number.