Which of the following shows a correct oxidation half reaction?

A. Fe + 2e- Fe2+
B. Fe Fe2+ + 2e-
C. Fe2+ + 2e- Fe
D. Fe2+ 2Fe + 2e-

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.

What occurs when a cell engulfs large food particals