Question

1. calculate the mass of kanamycin to prepare a 10 mg/ml in 4.5 ml of solution.

Explanation:

Step1: Identify the formula

$m = c\times V$ (where $m$ is mass, $c$ is concentration, $V$ is volume)

Step2: Substitute values

$c = 10$ mg/mL, $V=4.5$ mL, so $m = 10\times4.5$

Step3: Calculate the result

$m = 45$ mg

Answer:

45 mg