What is the concentration (in ppm) of a 500.0ml sample of drinking water that contains 1.5g of fluoride?

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Answer 1 · 2018-02-15T15:59:50

#3000 \ "ppm"#

Well, know that

#1 \ "ppm" = 1 \ "mg/L"#

So first, we need to convert #500 \ "mL"# into #"L"#.

Know that, #1 \ "L" = 1000 \ "mL"#.

#:.500 \ "mL"=0.5 \ "L"#

Also, #1 \ "g" = 1000 \ "mg"#

#:.1.5 \ "g" = 1500 \ "mg"#

So, the concentration will be

#(1500 \ "mg")/(0.5 \ "L")=3000 \ "mg/L"=3000 \ "ppm"#