Question

При генеральной уборке в помещении детского оздоровительного лагеря в ведро, содержащее 7 литров 0,8-ного водного раствора хлорной извести добавили 3 литра воды. сколько процентов составит концентрация полученного раствора

Answer 1

7000*8/1000=56 мл извести
56/100000*100%=0.56% стал раствор

Answer 2

Calculation of Concentration of the Solution

To calculate the concentration of the solution obtained after adding 3 liters of water to a bucket containing 7 liters of a 0.8% chlorine lime solution, we need to consider the dilution that occurred.

The initial volume of the solution is 7 liters, and its concentration is 0.8%. When 3 liters of water are added, the total volume of the solution becomes 7 + 3 = 10 liters.

To find the concentration of the resulting solution, we can use the formula:

Concentration = (Volume of solute / Total volume) x 100

In this case, the solute is the chlorine lime solution, and the volume of the solute is 7 liters. The total volume of the resulting solution is 10 liters.

Plugging these values into the formula, we get:

Concentration = (7 / 10) x 100 = 70%

Therefore, the concentration of the resulting solution is 70%.