What ion is formed when an atom of magnesium (mg) loses two electrons? mg–1 mg–2 mg 1 mg 2
2 answers:
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Methanoic acid has a molecular formula of HCOOH, when form an ester it's HCOO-, so the rest of the ester is -C4H9, a saturated 4 carbon chain. As shown in the attached diagram, there are 4 structural isomers, and the third isomer has 2 stereoisomers. So the answers is D:5.
