Question

Сколько мл дезинфицирующего средства "Алмадез" и какой объем воды необходимо, чтобы приготовить 1л 1,5% р-ра. (плотность растворов принять за 1г/см3) * 1. 5 мл концентрированного средства и 995 мл воды 2. 1,5 мл концентрированного средства и 998,5 мл воды 3. 15 мл концентрированного средства и 985 мл воды 4. 150 мл концентрированного средства и 850 мл воды

Answer 1

Ответ:

3) 15 мл концентрированного средства и 985 мл воды

Answer 2

Calculating the Dilution of "Алмадез" Disinfectant

To prepare a 1L solution of 1.5% "Алмадез" disinfectant, we need to calculate the amount of concentrated disinfectant and the volume of water required. The options provided are:

1. 5 ml concentrated disinfectant and 995 ml water 2. 1.5 ml concentrated disinfectant and 998.5 ml water 3. 15 ml concentrated disinfectant and 985 ml water 4. 150 ml concentrated disinfectant and 850 ml water

To determine the correct option, we need to calculate the amount of concentrated disinfectant and water required for a 1L solution of 1.5% concentration.

Calculation:

The formula for dilution is:

C1V1 = C2V2

Where: - C1 = concentration of the stock solution - V1 = volume of the stock solution - C2 = concentration of the final solution - V2 = volume of the final solution

Given: - C1 = concentration of "Алмадез" disinfectant - V1 = volume of "Алмадез" disinfectant - C2 = desired concentration of the final solution - V2 = total volume of the final solution

Solution:

Using the formula C1V1 = C2V2, we can calculate the amount of concentrated disinfectant and water required for a 1L solution of 1.5% concentration.

Let's calculate the amount of concentrated disinfectant and water required for each option to find the correct one.

1. For option 1: 5 ml concentrated disinfectant and 995 ml water 2. For option 2: 1.5 ml concentrated disinfectant and 998.5 ml water 3. For option 3: 15 ml concentrated disinfectant and 985 ml water 4. For option 4: 150 ml concentrated disinfectant and 850 ml water

I will now calculate the correct option based on the given formula.