Final answer:
To determine the mL(s) to give, calculate the ratio of the stock solution to the desired concentration and multiply it by the stock volume given. In this case, the answer is 7.83 mL(s).
Step-by-step explanation:
To find the number of mL(s) to be given, we need to calculate the ratio of the stock concentration to the desired concentration and then multiply that ratio by the given stock volume. In this case, the stock concentration is 600 mg/3 mL, and the desired concentration is 230 mg/mL. So, the ratio is 600/230 = 2.61. Multiplying this ratio by the stock volume of 3 mL, we get 2.61 * 3 = 7.83 mL. Therefore, you will give 7.83 mL(s) of the solution.