Using the balanced equation for the combustion of ethane: 2C 2H 6 + 7 O 2 → 4CO ... (3) A molecule of hydrogen peroxide contains more atoms than does a ... For which of the following compounds does 1.9 g represent 4.3 × 10 -2 moles of ... (3) The "normal" number of covalent bonds that the element carbon forms is four.
