Filtration is used to separate large particles but this process does not provide pure solutions as some impurities still remain in the solution. On the other hand, distillation helps in the formation of pure water as it removes the impurities from the water or solution.
A stock solution is the most concentrated
Stirring this is because the three elements are factors affecting dissolving of a solvent. Eg temprature affects in hotness or coldness, Particle size affects whether it is big or small while quantity of soluble affects by the amount
Our coefficients would be:
C12H22O11: 1
O2: 12
CO2: 12
H2O: 11
Why?
With the coefficients, our reactants would be:
12 carbons, 22 hydrogens, and 35 oxygens.
To obey the law of conservation of mass, we would have to have an equal amount of each of those elements on the products side, since so much of that element needs to form an equal amount on the other side.
So, with those coefficiens, our products would be:
12 carbons total, 35 oxygens total, and 22 hydrogens total. If we compare to the reactants side, they are all equal!
And, since 1 or 11 cannot be simplifyed any smaller, we know the equation is completely balanced.
Hope I could help!