1. Carbon monoxide, CO(g), is a deadly gas that takes the place of oxygen molecules
in the blood. If you are smoking, the concentration of carbon monoxide that reaches
your lungs is approximately 200 ppm. Determine the mass of CO(g) that would be
present in a sample of air having a mass of 9.69 (approximately one breath).

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.