1. A 450.0 N metal block measures 10.0 cm by 20.0 cm by 5.00 cm. Determine the pressure exerted by the block on a table in N/cm² when it is placed on its side? Its end? Face down?

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules

The organs inside the body and how they function together