Is C2Br2 ionic or covalent

2. what two items do autotrophs take from the environment to produce their food? 3. what are the two items that are released during transpiration from leaves? 4. what are the two membranes of the system? a.what are the two stages of photosynthesis? what are the two parts of photosynthesis?

What do many bases have in common? apex chemistry sem 2

How is the electron sea model of metallic bonding different from the band theory? how are they the same? give at least one similarity and one difference between the models