A 6.2 L ball contains 1.87 moles of nitrogen at 23°C, what is the
pressure in the ball?

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

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

Consider the heating curve of h2o and line segments a, b, and c. several changes are taking place at a, b, and c. all but one would be an appropriate description as e move through segments a, b and then c.