A) 2H2O + 2K H2 b) H2 + 2KOH 2 H2O + 2 K c) 2 H2O + 2 Na 2NaOH + H2 d) H2O + Na NaOH + H

Asolution at 25 degrees celsius is 1.0 × 10–5 m h3o+. what is the concentration of oh– in this solution?

Compare and contrast physical changes with chemical changes.

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm