Answer
$1.5\;g$.
Work Step by Step
The given values are
Base $B=1.5\;L$.
Rate $R=(1:1000)100=0.1$.
Let the pure epinephrine is $P=x$.
The formula is
$\Rightarrow \frac{P}{B}=\frac{R}{100}$
Substitute all the values.
$\Rightarrow \frac{x}{1.5\;L}=\frac{0.1}{100}$
Cross multiply.
$\Rightarrow 100x=0.15\;L$
Divide both sides by $100$.
$\Rightarrow x=0.0015\;L$.
Convert $L$ to $g$.
$\Rightarrow x=0.0015\;L\times \frac{1000g}{1L}$.
Simplify.
$\Rightarrow x=1.5\;g$.
