Question #9609d
1 Answer
Explanation:
Your goal here is to find the mass of sodium chloride that would be required to make
Now, a
"1 mol" = 10^3"mmol"" "1 mol=103mmol and" " "1 L" = 10^3"mL" 1 L=103mL
you can say that
200 color(red)(cancel(color(black)("mL"))) * (1color(red)(cancel(color(black)("L"))))/(10^3color(red)(cancel(color(black)("mL")))) * (10 color(red)(cancel(color(black)("mmoles NaCl"))))/(1color(red)(cancel(color(black)("L solution")))) * "1 mole NaCl"/(10^3color(red)(cancel(color(black)("mmoles NaCl"))))
= " 0.0020 moles NaCl"
Now all you have to do is use sodium chloride's molar mass to convert the moles to grams
0.0020 color(red)(cancel(color(black)("moles NaCl"))) * "58.44 g"/(1color(red)(cancel(color(black)("mole NaCl")))) = color(green)(bar(ul(|color(white)(a/a)color(black)("0.1 g")color(white)(a/a)|)))
The answer is rounded to one significant figure.