Answer:
Option A 0.5424 M
Explanation:
To do this, let's write the reaction again and see the mole ratio:
14H⁺ + 6Fe²⁺ + Cr₂O₇⁻ ---------> 2Cr³⁺ + 6Fe³⁺ + 7H₂O
According to this reaction, we have a mole ratio between the dicromate and iron of 1:6. In other words, 6 moles of dicromate reacts with only 1 mole of iron, therefore we can use the following expression:
nFe = 6 * nCr₂O₇
This is a REDOX reaction, where Iron is being oxidized while cromium is being reduced. Now, we have the concentrations and volume, let's express the moles in function of concentration and volume:
M₁V₁ = 6M₂V₂
Replacing the given data above and solving for concentration of iron (M₁)
M₁ = 6 * 45.20 * 0.1 / 50
M₁ = 0.5424 M
This is the concentration of the iron solution
The advantages of food adulteration includes a better appearance in the food and may increase the selling price, but these advantages only affect the producer of the product. Disadvantages include the increased risk of illness and allergic reactions due to the inedible products that are addedExplanation:
Answer: The decay energy is the energy released by a radioactive decay. Radioactive decay is the process in which an unstable atomic nucleus loses energy by emitting ionizing particles and radiation.
Answer:
<u>Solubility</u> is the quality of soluble (which can be dissolved). It is a measure of the ability of a certain substance to dissolve in another
Explanation:
The substance that dissolves is known as solute, while the one in which it dissolves is called a solvent or solvent. The concentration, on the other hand, refers to the ratio between the amount of solute and the amount of solvent in a solution.
The solubility can be expressed as a percentage of solute or in units as moles per liter or grams per liter. It is important to note that not all substances dissolve in the same solvents.
The polarity of substances has a great influence on their ability to solubility. It must be taken into account that the solubility depends on the characteristics of the solute and the solvent as well as the environmental pressure and the temperature.
Another factor that affects solubility is the presence of other species dissolved in the solvent. If the liquid in question harbors metal complexes, the solubility is altered. The excess or defect of a common ion in the solution and the ionic strength also have an impact on solubility.
According to the conditions of solubility, one can speak of a diluted solution (the amount of solute appears in minimum proportion with respect to volume), concentrated solution (with a significant amount of solute), <u>unsaturated solution</u> (does not reach the maximum tolerable amount of solute),<u> saturated solution </u>(has as much solute as possible) or <u>supersaturated solution</u> (contains more solute than may exist).
The state of a process in which activities or concentrations and products do not change over a period of time is called <u>chemical equilibrium</u>. Any relationship established between this and the dissolved and solid states of a compound is known as the equilibrium of solubility, and is used to anticipate the solubility of a substance under certain conditions.
Answer: Argon (Ar), which has 18 protons.