PLEASE ANSWER

Based on the chart below order each of the substances according to how fast sound waves would travel through them (1 fastest- 5 slowest):

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

Which compound contain an iron with a 3+ charge

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.