The entire process, assuming their degrees of ionization to be 1 due to their strong acid/base properties, should be
2NaOH + H2SO4 --> 2H2O + Na2SO4
Therefore, if 200 grams of sodium hydroxide are used with molar mass 40, than 5 mols of sodium hydroxide was used. Using the ratio of 2:1:2:1, we see that 2.5 mols of Na2SO4 was used, therefore 2.5*molar mass = 2.5*142 = 355 grams.
Answer:
Magnesium oxide is a binary compound of magnesium and oxygen while magnesium ribbon consists only of magnesium atoms.
Explanation:
The burning of magnesium in oxygen is a chemical change. It produces magnesium oxide having greater mass than magnesium ribbon. The greater mass results from the fact that the chemical reaction has added another element to the sample- oxygen. The mass of magnesium ribbon is the mass of magnesium atoms alone but in magnesium oxide, we consider the masses of magnesium and oxygen atoms making magnesium oxide heavier than magnesium ribbon.
Answer:
Slightly heat her tea,
Water molecules would have a greater kinetic energy at a greater temperature being able to use this energy to break the lattice and the attraction forces between the particles in the powder.
Explanation:
It looks like Jasmine obtained a saturated solution and tried to dissolve more powder. A saturated solution is a solution in which we have the maximum amount of solute (powder) dissolved and we cannot dissolve more.
That said, Jasmine already has a saturated solution and the remaining crystals of powder will not dissolve normally, unless we perform specific adjustments.
According to the solubility curves, remember that with an increase in temperature, the solubility increases, that is, the greater the temperature, the greater the amount of a substance that can dissolve at the given volume of water. This means we may suggest Jasmine to slightly heat her tea while stirring until she sees that the crystals dissolve fully.
This will work, as water molecules would have a greater kinetic energy at a greater temperature being able to use this energy to break the lattice and the attraction forces between the particles in the powder.
According to Sigmund Freud, the part of the personality if not fully developed, a person will be more likely to commit a crime is the superego. The superego of one's person is the moral guide. This is the aspect of personality that when it is correctly developed, urges and desires of the id and the one's ego are being balanced. This is when a person rejects those that are not ethically right. When a person commits a crime, this person is more likely committed to his or her urges and desires without even thinking of what the consequences he or she will face.