Answer:
pH = 13.7.
Explanation:
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In this case, as we set up the chemical reaction between nitric acid and sodium hydroxide:
It is possible to realize there is a 1:1 mole ratio of acid to base, thus, we next compute the moles of each one:
In such a way, since the base react with more moles, there is leftover that we compute as shown below:
Afterwards, we compute the concentration given the new volume of 500 mL (0.500 L), as both volumes are added up:
Now, since sodium hydroxide is such a strong base, we compute the pOH first:
And the pH:
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It is composed by iron and nickel that lies above earth's solid inner core and below it's mantle.
There are actually 5 skills
in applying Hess’ Law. According to science.uwaterloo and chem.libretexts.org
these are the 5 skills.
- changing the enthalpy of
the reaction whenever the equation changes
- interpreting the Hess’ Law
- applying the principle of
conservation of energy to solve the problem
- sketching an energy diagram
for any related reactions
<span>- and lastly using the
diagram to explain the Hess’ Law.</span>
Answer: the third option, each sub-level electron type has a unique path where it will likely be found.
Explanations:
1) Bhor's model of electrons orbiting the nucleus of the atom was shown to be wrong.
2) The actual model of the atom is the quantum atom model.
3) The quantum atom model depicts the electron in regions called orbitals.
4) The orbitals are the sublevels of energy (or subshells).
These sublevels (orbitals) are identified with the letters s, p, d, and f.
The orbitals s are spherical, the orbitals p are like a dumbbells, d and f orbitals have weirder shapes.
Those orbitasl are kind of electron clouds. The orbitals are defined as regions of the space around the atomic nucleus where the electrons are likely located.