Question

Скільки грам солі і води необхідно взяти, щоб приготувати 150г 5%-го розчину?

Answer 1

Ответ:на фото

Объяснение:

Answer 2

Calculating the Amount of Salt and Water Needed to Prepare a 150g 5% Solution

To calculate the amount of salt and water needed to prepare a 150g 5% solution, we can use the formula for calculating the mass of solute and solvent in a given solution.

Step 1: Calculate the Mass of Salt (Solute) The mass of salt can be calculated using the formula: \[ \text{Mass of Solute} = \text{Total Mass} \times \left( \frac{\text{Percentage Concentration}}{100} \right) \]

Substituting the given values: \[ \text{Mass of Solute} = 150g \times \left( \frac{5}{100} \right) = 7.5g \]

Step 2: Calculate the Mass of Water (Solvent) The mass of water can be calculated by subtracting the mass of the solute from the total mass: \[ \text{Mass of Solvent} = \text{Total Mass} - \text{Mass of Solute} = 150g - 7.5g = 142.5g \]

Therefore, to prepare a 150g 5% solution, you would need to take 7.5 grams of salt and 142.5 grams of water.