Audrey drove 50 miles in 2 hours. What was her average speed? 25 miles per hour 20 miles per hour 50 miles per hour 100 miles per hour

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?