Atoms of which pair of elements will form covalent bonds in a compound? ASAP PLZ A. Li and Al
B. C and O
C. Co and Fe
D. Na and F

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b.refraction c.diffraction d. interference

A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s