<span>First, he should inform all the people who might be in the building to quit immediately.
Since the content which was in the pipette is not known they vacate and let the investigation to be carried out.
If the content is known, then the procedure on how to lean up the mess is carried out. After that people can go back to their normal duties.</span>
Answer:Atoms of nonmetals have a tendency to gain or share electrons when they react.
Explanation: Non-metals are elements that gain electron to form negatively charged ions known as anions.
When non-metals react, they either gain/accept electron from a metal atom or share electron with another non-metal atom. When a non-metal accepts an electron from a metal atom, the type of bond formed is called ionic or electrovalent bond. In electrovalent bond, the metal atom transfers its valence electrons to the non-metal atom so that both attain a stable octet or duplet structure.
When a non-metal shares electron with another non-metal atom, the type of bond formed is known as covalent bond. In covalent bond, the two non-metal atoms share a pair of electron, each atom donating one electron to form a pair.
There would be 40 units of energy left, because 10% is lost each time.
Carbohydrates- monosaccharides
Lipids- glycerol and fatty acids
Nucleic acid- nucleotides
Proteins- amino acids