Is word 'and' is proper noun ?

Karen often finds that tasks come up unexpectedly during her day, and she has trouble figuring out how to rearrange her schedule because she changes it daily.  what should karen do to prevent these unexpected tasks from disrupting her day

Write two paragraphs describing how your chosen theme relates to the characterization and setting in "the yellow wallpaper." one paragraph should focus on characterization, and the other should focus on setting. back up your ideas in each paragraph by summarizing the story in a way that emphasizes the most important details.

Acontainer hold 4 gallons of lemonade.a large lemonade contains 16 ounces. how many large lemonades could the restaruant sell before they run out of lemonade?