What needs to happen for the equation ch4 + o2 → co2 + h2o to be balanced? a. nothing, the equation is already balanced. b. a coefficient of 2 must be added before the second reactant and the second product. c. a coefficient of 2 must be added before both products and reactants. d. a coefficient of 2 must be added before both products.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.