alexa likes very sweet coffee. when she adds ...
alexa likes very sweet coffee. when she adds sugar, no matter how hot the coffee, most settles to the bottom of her cup. alexa wants to determine how she can best dissolve lots of sugar in the coffee without using any extraordinary methods.\nwhat experimental method would best provide alexa with the information she needs?\na adding sugar at different rates to the coffee\nb dissolving sugar in coffee at different temperatures\nc stirring the sugar after its been added to the coffee\nd using different types of sugar in coffee at a single temperature
Answer
# Brief Explanations:
- Option A: Adding sugar at different rates won't address the dissolution issue as the problem is about getting more sugar to dissolve, not the speed of adding.
- Option B: Since the problem mentions that even with hot coffee (a temperature factor), sugar settles. But different temperatures (even if she already tried hot) could be explored in a more systematic way (e.g., very hot vs. just below boiling) to see if there's a temperature - solubility relationship she hasn't fully exploited.
- Option C: Stirring is a common method but the question says "without using any extraordinary methods" and also, the problem might not be due to lack of stirring (as it's a basic step people do).
- Option D: Using different types of sugar is not relevant as the problem is about dissolving the sugar (presumably common table sugar) she has.
# Answer:
B. dissolving sugar in coffee at different temperatures