Question #1c985

1 Answer
Nathan L.
Aug 9, 2017

The formula for the percentage by mass of a chemical species #x# is given by

#ulbar(|stackrel(" ")(" "%"mass of"color(white)(l)x = ("mass of"color(white)(l)x)/"total mass" xx 100%" ")|)#

For example, if you wanted to find the mass percentage of #"NaCl"# given that there are #24# #"g NaCl"# in a solution with mass #131# #"g"#, we would have

#%"mass NaCl" = (24cancel("g NaCl"))/(131cancel("g soln")) xx 100% = color(blue)(ul(18.3%#

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