In the laboratory a student combines 24.7 mL of a 0.123 M magnesium nitrate solution with 12.1 mL of a 0.379 M manganese(II) nitrate solution. What is the final concentration of nitrate anion ? M

if you mean hydrogen and oxygen then water is the product

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.