Question

What is the percent by mass of potassium in K3Fe(CN)6?

Answer 1

\[\large\rm Percent~by~Mass=\frac{Mass ~~of~ ~Solute}{Mass ~~of~~ Solution} \times 100\]

Answer 2

\[\huge\rm \color{orange}{K}_\color{red}{3}Fe(CN)_\color{blue}{6}\]
\[\rm Percent ~Mass ~of~K= \frac{\color{red}{3} \cdot 39.0983 }{Molar~Mass~of~the ~compount} \times 100\]

Answer 3

\[\large\rm K= 3 \times 39.0983= ?\]\[\large\rm Fe= 1 \times 55.85= ?\]\[\large\rm C=6 \times 12.01=??\]\[\large\rm N= 6 \times 14.01=??\]
add Em up. That will be the denominator MM

Answer 4

I found this awesome pic

Answer 5

fookin' awesome graphics!!

Answer 6

Moved to the Chemistry section from Mathematics.

Answer 7

Closed due to answered.