Answer:
6
Explanation:
number of protons equal number of electrons for the atom to be stable
What is the mole ratio of  to Fe? if oxygen it is 4:3 Fe3O4
Answer: Communicable diseases, abuse gunshot wounds and forensic medicine
Explanation:
Scientists use scientific notation to communicate extremely small measurements. Hence, option A is correct.
<h3>What scientific notation?</h3>
Scientific notation is a way of writing very large or very small numbers.
Scientists use scientific notation to represent very small or very large numbers because this notation increases the
- accuracy of measured quantities.
- convenience in using the numbers.
- the number of significant figures.
- precision of measurements.
Hence, option A is correct.
Learn more about the scientific notation here:
brainly.com/question/18073768
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