2. A train pulls out of a station at a speed of 3 m/s . 45 s after leaving the station, the train is going 18 m/s What is its acceleration? O 0.33 m/s2 O 0.45 m/s2 O 0.57 m/s2 0.66 m/s2 1​

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.