Question

read this!
a well - written research question states the independent and dependent variables for an experiment. for example, a student investigated the effect of the deicer, magnesium chloride, on vegetation on the sides of highways. her research question was, “what is the effect of magnesium chloride solution concentration on the growth of rye grass?”
key 12. write a research question, using the format suggested in the read this! box, for the experiments in models 2 and 3.
alka - seltzer® and vinegar —
boiling points of alcohols —

Explanation:

For "Alka - Seltzer® and Vinegar" experiment:

The independent variable here can be the amount (or concentration) of Alka - Seltzer® (or Vinegar), and the dependent variable can be the rate of gas production (like the amount of CO₂ produced over time). Following the example, the research question should state the effect of the independent variable on the dependent variable. So a suitable research question is "What is the effect of the amount of Alka - Seltzer® on the rate of gas production when it reacts with vinegar?"

The independent variable could be the type of alcohol (e.g., methanol, ethanol, isopropanol) or the molecular weight of the alcohol, and the dependent variable is the boiling point of the alcohol. Using the example's format, the research question should ask about the effect of the independent variable on the dependent variable. So a suitable research question is "What is the effect of the type of alcohol on its boiling point?"

Answer:

What is the effect of the amount of Alka - Seltzer® on the rate of gas production when it reacts with vinegar?

For "Boiling Points of Alcohols" experiment: