I think it is D
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The most appropriate and most commonly used metric when describing a person's mass is D.) kilograms
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Atoms are made of 3 types of subatomic particles ; protons, neutrons and electrons
protons and neutrons are located inside the nucleus and electrons are found in energy shells around the nucleus. Protons are positively charged, electrons are negatively charged and neutrons are neutral. elements in their ground state are neutral with equal amounts of protons and electrons.
Atomic number is the number of protons. atomic number is characteristic for the element.
atomic number of Be is 4 therefore Be has 4 protons
answer is B. 4
Answer:
this is an example of a Simple sentence
Answer:
Answer below!
Explanation: Mean -- add all of the values and divide by the total number of data points.
Error -- subtract the theoretical value (usually the number the professor has as the target value) from your experimental data point.
Percent error -- take the absolute value of the error divided by the theoretical value, then multiply by 100
