Assume the recommended single dose of ibuprofen for children over the age of two is 4.5 mg per pound (mg/lb) of body weight. Use this guideline to calculate a single dose in milligrams for a five‑year‑old child who weighs 49 lb.

220.5

Explanation:

because 4.5 x 49 = 220.5

d.) circle motion requires a force to give it a centripetal acceleration.

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.