Answer:
microorganism can bee seen yes
Four significant figures would be B. Because 0's before the decimal are not important, but 0's after the decimal are.
Answer:
Naming ionic compounds with transition metals isn't too hard either. They are named like the binary compounds, with the cation first, then the anion with -ide added to it, but you have to take into account the variations of the metal ions.
Explanation:
4HBr(aq) + O2(g)= 2H2O(l) + 2Br2(l)
The one that is not a compound is Cl
