Consider the following intermediate chemical equations. What is the enthalpy of the overall chemical reaction ? -4,580 kj -1,300 kj 1,300 kj 4,580 kj.

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

What are four significant sources of ghgs that come from wostem washington?

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided