Which material is the least likely to be recognized as a mixture by looking at it under a microscope?
2 answers:
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Answer:
The right answer is "3 g".
Explanation:
Given:
Initial mass substance,
By using the relation between half lives and amount of substances will be:
⇒
Thus, the above is the correct answer.
Answer:
Isotopes of an element are atoms of the same element that have different number of neutrons.
