How many significant figures are there in 500 and 101.00?

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

C3h8o3 - glycerol major species present when dissolved in water

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line