Given the Three Reactions Shown Below, Pick the Best Answer

question 61

Multiple Choice

Given the three reactions shown below, pick the best answer.
I. K + O₂→KO₂
II. 2 K + 2 H₂O→2 KOH + H₂
III. 2 NaOH + H₂SO₄→Na₂SO₄ + 2 H₂O

• A) I and III are correct, II is not
• B) II and III are correct, I is not
• C) only III is correct
• D) I and II are correct, III is not
• E) all three are correct

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Definitions:

Fake Treatment

A placebo or sham treatment given to participants in research, which has no therapeutic effect.

Demand Characteristic

Cues in an experimental environment that communicate to participants how they are expected to behave.

Control Group

A control group in scientific experiments is the group of subjects that does not receive the treatment or experimental condition and is used as a benchmark to measure the effects of the treatment.

Control Group

In experimental research, a group of subjects that does not receive the experimental treatment and is used as a benchmark to measure how the other tested subjects do.