Could the empirical formula determined from chemical analysis be used to tell the difference between pentene, C5H10, and heptene C7H14?

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

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro