According to the question, the determined melting point of the compound is 112.5-113.0oC. When the solidified compound was retried, the melting point was found to be 133.6-154.5oC. This greater range higher than 112°C is caused by reusing samples leads to errors.
A pure sample is known by its sharp melting point. A pure sample does not melt over a large range. We can see this in the predetermined melting points of the pure sample(112.5-113.0oC).
However, reusing a sample introduces errors because the pure sample may become contaminated leading to a larger and higher range of melting point (133.6-154.5oC) which is far above 112°C.
Learn more: brainly.com/question/5325004
To turn the flow of electricity on or off. Probably wrong
Answer:
The role of indicator in titration is to detect the endpoint of the titration.
The structures in the human lungs where gas exchange occurs is at the alveoli. Tiny air filled sacs at the end of bronchioles.
Answer:3600 meters
Explanation:
If a car travels 60 meters a second for 60 seconds that means it traveled 60*60 meters which is 3600
