Question

Рассчитайте массы поваренной соли и воды для приготовления 1 кг 6-процентного раствора.

Answer 1

M соли = w*m раствора/100=6*1000/100=60 г
m воды =1000-60=940 г

Answer 2

Calculating Mass of Salt and Water for a 6% Solution

To calculate the masses of salt and water needed to prepare a 1 kg 6% solution, we can use the formula for calculating the mass of a solution:

Mass of Solution (m) = Mass of Solvent (m_water) + Mass of Solute (m_salt)

Where: - m_water = mass of water - m_salt = mass of salt

The formula for the percentage concentration of a solution is:

Percentage Concentration (w%) = (Mass of Solute / Mass of Solution) * 100

Using the given information, we can calculate the masses of salt and water for the 6% solution.

1. Calculating Mass of Water (m_water): - From Source we have the following information: - w% = 5% - m = 5 - mH2O = 45 - Using the formula for percentage concentration, we can calculate the mass of water: - m_water = mH2O = 45

2. Calculating Mass of Salt (m_salt): - From Source we have the following information: - w% = 12% - m = 300 - Using the formula for percentage concentration, we can calculate the mass of salt: - m_salt = m = 300

3. Calculating the Total Mass of the Solution (m): - Using the formula for the mass of a solution: - m = m_water + m_salt - m = 45 + 300 - m = 345

Therefore, to prepare a 1 kg 6% solution, you would need approximately 345 grams of the solution, consisting of 300 grams of salt and 45 grams of water.