Two: Coefficients are the numbers in front of each formula. If no number is shown, a one is understood. Three: The coefficients tell us how many molecules (moles) of each reactant used and how many molecules (moles) of each product made.
The answer to your question is "carbon dioxide from combustion"
Hydrogen bonds, electrostatic attractions, hydrophobic interactions, and Van der Waals attractions.
answer A.a new substance is formed