Which of the following best describes an atom? select one: a. consists of elements b. consists of compounds c. biggest unit of a compound d. smallest unit of an element

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

What is the number of atoms in 3.54 mol s

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?