Perform the following calculations to the correct number of significant figures.
(83.0 - 22.953) / 0.0059

Complete the sentence. the lower the hydrogen ion concentration, the the ph. higher lower closer to 7 closer to 0

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.