If a chemical change has taken place, which of these is most likely true? (5 points) Original substance can be easily recovered. Composition of a substance is the same. A completely new substance is formed. An easily reversible process has taken place.

Why do lunar and solar eclipse not happen every month

Which one of the following bonds would you expect to be the most polar? a) b–h b) n–h c) p–h d) al–h e) c–h

Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.