Explanation
We are given the following:
"Chemist has 50 ounces of mixture."
We are required to simplify 2/5 of an ounce.
This can be achieved as:
[tex]\begin{gathered} An\text{ }ounce=1\text{ }ounce \\ \frac{2}{5}\text{ }of\text{ }1\text{ }ounce=\frac{2}{5}\times1\text{ }ounce \\ =0.4\times1\text{ }ounce \\ =0.4\text{ }ounce \end{gathered}[/tex]
Hence, the answer is 0.4 ounce.
