shaihulud The graphic doesn’t match the equation. First time using this site. CO2 on the right side is wrongly shown as O2 instead. https://www.chemicalaid.com/tools/equationbalancer.php?equation=C4H10+%2B+O2+%3D+CO2+%2B+H2O&hl=en
Admin It's showing a more condensed form, so the C is not shown as a letter, but the vertex where it is is implied to be a C. Just like on the left, there are 4 carbonds, but the letter C is shown only twice.