True or False; the atomic number always equals the number of protons, neutrons and electrons found in an atom.

For which one of the following reactions is the value of δh° rxn equal to δh° f for the product? a. 2 h2 (g) + o2 (g) → 2 h2o (l) b. n2 (g) + o2 (g) → 2 no (g) c. 2 h2 (g) + o2 (g) → 2 h2o (g) d. h2o (l) + 1/2 o2 (g) → h2o2 (l) e. none of the above

This drawing shows a human body system. what is the primary function of this body system?

Draw the structure for 5-isopropyl-2-methyl-3-nonene