An electron in a hydrogen atom moves from level 1 to level 4. the electron then drops from level 4 to level 2. which statement describes the most likely result? the energy absorbed in the first move equals the energy released in the second move. the energy absorbed in the first move is greater than the energy released in the second move. the energy released in the first move equals the energy absorbed in the second move. the energy released in the first move is greater than the energy absorbed in the second move.

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.

What term describes technology that operates on an atomic level

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule