Answer:
Li₂S(aq) + SrI₂(aq) → 2 LiI(aq) + SrS(s)
Explanation:
Lithium sulfide and strontium iodide react through a double displacement reaction. In these reactions, the cation of one salt is exchanged with the cation of the other. The condition for a double displacement reaction to occur is that a precipitate is formed. Here, according to the solubility rules, strontium sulfide is insoluble, so this reaction is feasible. The chemical equation is:
Li₂S(aq) + SrI₂(aq) → 2 LiI(aq) + SrS(s)
Answer:
Explanation:
1 mol of ideal gas at STP occupies 22.4 (or 22.7 depending on the convention being used for STP) liters in volume. I will use 22.4 so 17.88*22.4 = 400.5 L
Answer:
Gallium-72
Explanation:
The elements are identified by the number of protons of the atom, which is its atomic number.
In this case the number of protons 39 (atomic number 39) permit you to identify the element as gallium.
Now, to identify the isotope you tell the name of the element and add the mass number.
The mass number is the sum of the protons and the neutrons
In this case, the number of neutrons is the original 39 plus the 2 added suddenly, i.e. 39 + 2 = 41, so the mass number is 31 + 41 = 72
Therefore, the isotope is gallium - 72.
Answer:
Binding affinity measures the strength of the interaction between a molecule to its ligand; it is expressed in terms of the equilibrium dissociation constant; and the higher value of this constant, the more weaker the binding between the molecule and the ligand is. On the other hand, small constans means that the interaction is tight. So "C" binds most tightly to the enzyme and "D" binds least tightly.
