Answer: primary colors are those you can't get by mix in other colors. They are red, blue, and yellow. secondary colors come from mixing two primary colors.
This is the reaction formula,
4Fe+3O2=2Fe2O3
<span>3Fe+202=Fe3O4
it has o</span>xygen atom after it's rusted
Answer:
n don't hv symmetry lines.
so the symmetry of n is 0
Cause latin name of Pb is plumbum.
The same K - potassium - latin name is kalium.
