When sodium and chlorine combine to form sodium chloride, sodium chloride is the:
a. originator
b. reactant
c. product
d. produce

product

Explanation: it's the product of chlorine and sodium

waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )