"Number of sulfur atoms"Number of sulfur atoms==100xxN_A100×NA...where...
Explanation:
"Number of sulfur atoms"Number of sulfur atoms==100xxN_A100×NA...where N_ANA=="Avogadro's number"Avogadro's number, 6.022xx10^23*mol^-16.022×1023⋅mol−1.
And thus "Number of sulfur atoms"Number of sulfur atoms==100*molxxN_A100⋅mol×NA==10^2*molxx6.022xx10^23*mol^-1=6.022xx10^25102⋅mol×6.022×1023⋅mol−1=6.022×1025"sulfur atoms"sulfur atoms.
How many sulfur atoms in 100*mol100⋅mol of Na_2^(+)S_2O_3^(2-)Na+2S2O2−3, "sodium thiosulfate"sodium thiosulfate?