L and D forms of a molecule are what kind of isomers? double isomers
layered isomers
stereoisomers
copy isomers

What semimetal can form four single covalent bonds.

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What energy conversion occurs when a sling shot is used to shoot a rock across the room? (2 points) question 2 options: 1) stored mechanical energy is converted to mechanical energy. 2) stored mechanical energy is converted to radiant energy. 3) gravitational energy is converted to radiant energy. 4) gravitational energy is converted to mechanical energy.