Given the reaction: Magnesium + Water --> Magnesium Hydroxide + Hydrogen

At which temperature will the reaction occur at the greatest rate?

Avoltaic cell converts chemical energy to

What is the increase in density of a medium due to wave travel?

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.