Each carbon atom in a molecule forms four single covalent bonds with other atoms in a(n) a. structural isomer.
b. saturated hydrocarbon.
c. aromatic hydrocarbon.
d. geometric isomer.

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.

Fossil fuels are organic compounds that are made from