171 because 57x3=171.
BOOM!!
Shakalaka.
The answer is (4) CH3CH2OH and CH3OCH3. You need to figure out which pair has the same molecular formula which means that they have the same number of same atoms. Then you can get the write answer.
A superconductor performs best at very cold temperatures.
Answer:
B and C is your answer
Explanation:
Hope I helped, Sorry if I'm wrong
