Which half-reaction correctly describes an oxidation? Upper C a (s) plus 2 e superscript minus right arrow upper C a superscript 2 plus (a q). Upper B r subscript 2 plus 2 e superscript minus right arrow 2 upper B r superscript minus. Upper N a superscript plus (a q) right arrow upper N a (s) plus e superscript minus. Upper C r (s) right arrow upper C r superscript 3 plus (a q) plus 3 e superscript minus.

Brad and his family like to go camping. they always take a gas lantern with them. the lantern can take fiuels but always puts out the same amount of light. brad has two different kinds of fuel for the lantern. how can he figure out which kind of fuel has more chemical energy that the lantern can turn into light? measure the brightness of the lantern using each kind of fuel by comparing it to the full moon. g measure the volume of the containers of fuel. measure how long the lantern stays lit on a fixed amount of fuel. measure the mass of each container of fuel using a balance scale. answer 12

What term is applied to a scientist who studies ancient life, including animal and plant fossils a. anthropologist b. dendroclimatologist c. geophysicist d. paleontologist

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?