2 because the 1st energy level can only hold 2 electrons and the 2nd holds 4
<h3>To round to a significant figure:</h3>
- look at the first non-zero digit if rounding to one significant figure.
- look at the digit after the first non-zero digit if rounding to two significant figures.
- draw a vertical line after the place value digit that is required.
- look at the next digit.
Answer:
QUESTION:
amino acids come from which type of organic molecule?
ANSWER:
<em><u>Proteins</u></em>
Proteins are polymers made up of nitrogen-containing monomers called amino acids. An amino acid is a molecule composed of an amino group and a carboxyl group, together with a variable side chain.
Explanation:
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Answer:The answer is A
Explanation:I have had the question before