Select all that apply.
reactions between atoms occur when:
1. an atom seeks to fill its outer shell of electrons
2. an atom seeks to balance its positive and negative charges
3.the reaction will result in paired electrons

An electric power distributor charges residential customers $0.10 per kilowatt-hour (kwh). the company advertises that "green power" is available in 150 kwh blocks for an additional $4 per month. (green power is generated from solar, wind power, and methane sources.) if a certain customer uses an average of 391 kwh per month and commits to one monthly 150 kwh block of green power, what is her annual power bill