A student travels in a car from Philadelphia for 12 hours before they reach their destination in Chicago. They measured the distance they traveled as 1221 km. What was their average speed? HELP ME PLEASE !!

101.75 km/hr

Explanation:

average speed is the distance traveled ÷ time traveled

= 1221 ÷12 = 101.75 km/hr

iron and sleel

make siroeel

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.