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3 days ago · The 3-methyl- prefix indicates that the molecule has a methyl group (C H 3) at the C-3 carbon atom. The C-3 carbon atom will be the carbon atom that is separated from the C O O H group by one methylene (C H 2) group. This statement rules out system D. Option (A) is the only molecule that contains a carboxyl group, a four-carbon parent-chain ...
5 days ago · Biological macromolecules are organic molecules. This means that they possess atoms of carbon that are bonded to atoms of hydrogen. Molecules that do not possess carbon–hydrogen bonds are considered inorganic with regards to biology. There are a few exceptions to this rule.
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5 days ago · Elements in the same Period have the same number of energy shells. For example, all the elements in Period 5 have 5 energy shelss and their valence electrons are in the 5th energy shell (highest energy shell). Representative Elements are Groups 1,2, and 13 to 18. Transition Elements (also called Transition Metals) are Groups 3 to 12.
This table shows the most common charges for atoms of the chemical elements. You can use this table to predict whether an atom can bond with another atom. The charge on an atom is related to its valence electrons or oxidation state . The most common charges are based on maximum stability for the atom. However, other charges are possible.
5 days ago · The activated carbons were characterised by scanning electron microscopy, X-ray photoelectron spectroscopy, and nitrogen and carbon dioxide gas adsorption. Under the optimal conditions, the BET-specific surface area, total pore volume, and microporous volume of the activated carbon were as high as 1142 m2/g, 0.62 cm3/g, and 0.40 cm3/g ...
4 days ago · Fast Fact: Atoms and Molecules. An atom is the basic unit that everything is made of. There are many different kinds of atoms, with different names, sizes, and weights*. Atoms are very tiny. The largest one would be about 200,000 times smaller than the width of a human hair. Because they are so small, atoms can’t be seen without special tools.
5 days ago · Metabolism (/ m ə ˈ t æ b ə l ɪ z ə m /, from Greek: μεταβολή metabolē, "change") is the set of life-sustaining chemical reactions in organisms.The three main functions of metabolism are: the conversion of the energy in food to energy available to run cellular processes; the conversion of food to building blocks of proteins, lipids, nucleic acids, and some carbohydrates; and the ...
