Which item in the photo is a good thermal insulator and why A. the plastic handle because it’s electrons don’t move freely
B. the cut vegetables because they contain a lot of water
C. The metal pan, because it’s electrons move quite freely
D. Human skin because it is made up mostly of water

iron and sleel

make siroeel

it means there are 3 atoms of oxygen

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

gold is my favorite solid.