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

Who can you think of that has an a in their first name and a b in their last name?

Break down of rocks and minerals into smaller particles without a change in composition is called_

Afarmer began a new method of reducing grain spills. this reduced the number of mice on the farm. the number of snakes in the surrounding area decreased at the same time. the snakes depended on the mice that lived in the field. what’s the likely reason the snake population decreased? a. the number of snake predators increased. b. the number of mice increased. c. the number of mice decreased. d. the pesticides affected the snakes. e. a new breed of mice moved into the field.