2. interpret numbers on a chemical hazard label.
a. a number is the most serious, and a number is the least serious.
b. what does the number four on a red background indicate to the user?

What provides structure to the human body?

Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.

What is the value of the standard enthalpy of formation of an element in its most stable form?