9. Ibuprofen contain which of the following two functional groups: (1 point) A) benzene

B) halogen

C) carboxyl

D) hydroxyl

A and C

I hope this helps you:)

i think it is true since you can test the answer and can use observations to complete it.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.