Express in scientific notation. Choose the answer with the proper number of significant figures. 9x10^9/4.5x10^1 •2x10^8 •2.0x10^8
•2.0^8

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.

i'm wiling to try and you : )

what is the question here. i think you messed up.