Answer:
Hi
The high dipole moment of water and its ease in forming hydrogen bonds make it an excellent analysis. A molecule is soluble in water if it can interact with its molecules through hydrogen bonds or ion-dipole interactions.
With anions that have oxygen they can form hydrogen bonds, since oxygen acts as their acceptor. The attraction of the anion on the water dipole must be taken into account. The same goes for Cl-F, which have solitary electron pairs and can act as hydrogen bridge acceptors. On the other hand, cations such as Na+, K+, Ca++ or Mg++ are surrounded by water molecules to which they are joined by dipole ion interactions while oxygen atoms are oriented towards the catión.
Explanation:
Answer:
M = 3.0 mol/L.
Explanation:
- We can calculate the molarity of a solution using the relation:
<em>M = (mass x 1000) / (molar mass x V)</em>
- M is the molarity "number of moles of solute per 1.0 L of the solution.
- mass is the mass of the solute (g) (m = 87.75 g of NaCl).
- molar mass of NaCl = 58.44 g/mol.
- V is the volume of the solution (ml) (V = 500.0 ml).
∴ M = (mass x 1000) / (molar mass x V) = (87.75 g x 1000) / (58.44 g/mol x 500.0 ml) = 3.0 mol/L.
Answer: Diatomic elements are a subgroup of diatomic molecules.
Explanation:
Every molecule that consists of two atoms is diatomic. Only if the two atoms are the same there is a diatomic element.
So O2 is a diatomic element (and thus a diatomic molecule)
HCl is a diatomic molecule, but not a diatomic element.
One example of diatomic is earth's atmosphere is a host to a few different diatomic molecules, including nitrogen (N2) and oxygen (O2, not to be confused with ozone, which is O3).
Hopes this helps you!