What is the percent yield for the reaction below when 705.0 g SO2 and 80.0 g O2 produce 586.0 g S03?
2502(g) + O2(g) → 2S03(g)
A. 73.2%
B. 66.5%
C. 74.7%
D. 68.3%

Its strengthits conductivity of heat and electricity its shiny colourmalleable and ductility

You use the atomic number to find out how many protons and neutrons there are in the atom. you use the atomic mass to find out how many protons and electrons there are in the atom. 

It must be measured in k.hope my answer is to you : )