What is the mass percent (m/m) concentration of a solution of 10.0 g of sodium chloride in 100 g of solution?
#color(blue)(|bar(ul(color(white)(a/a)"% m/m" = "grams of solute"/"100 g of solution" xx 100color(white)(a/a)|)))#
Simply put, the solution's mass percent concentration is given by the number of parts of solute you get in
In your case, the solution is said to contain
#"% m/m" = color(green)(|bar(ul(color(white)(a/a)color(black)(10 %)color(white)(a/a)|)))#
So, every time a problem wants you to figure out a solution's mass percent concentration, focus on determining how many grams of solute you per in