Is C8H16+CO2-->H20+O2+C4H8 a balanced equation for the complete combustion of cyclooctane (C8H16)?

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)