Twenty students were surveyed to find out how many hours of TV they watch during a school
week. The results are shown to the right.
If student 12 had actually watched 10 hours of TV
instead of 1, which values would be affected?
mean
median
mode
range
DONE

your answer would be a. 12.5 kg

the answer is na (sodium)

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.