What is the name of the line drawn perpendicular to the surface where a light ray strikes?

a.
incoming ray
c.
normal
b.
reflected ray
d.
vertical

Problem page gaseous ethane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if of water is produced from the reaction of of ethane and of oxygen gas, calculate the percent yield of water. be sure your answer has the correct number of significant digits in it.

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt