Calcium chloride (CaCl2) is a salt which dissociates when
dissolved in water. Assuming that the dissociation is complete (100 %), then
the half reaction for this would be:
<span>CaCl2 ---> Ca2+
+ 2 Cl-</span>
We can see that in 1 mole of CaCl2 salt, 1 mole of Ca2+
ion and 2 moles of Cl- ion is created. Therefore there are 3 moles of ion per 1
mole of CaCl2. Using this ratio, the total number of moles of ions in the
solution is:
Total number of ions = 0.5 mol CaCl2 * (3 moles ion / 1
mol CaCl2)
<span>Total number of ions = 1.5 moles ion</span>
The number of electrons in an atom which has its quantum number n equal to 2 (n = 2) and ml equal to 2 (ml = 2) is equal to zero (0).
<h3>What is an electron?</h3>
An electron can be defined as a subatomic particle that is negatively charged and it's found outside the nucleus of the atom of a chemical element. This ultimately implies that, an electron is the opposite of a subatomic particle called proton.
<h3>What is the Pauli exclusion principle?</h3>
The Pauli exclusion principle can be defined as a principle which states that no two electrons (fermions) in a single atom can have the same numerical values for all four (4) of their electronic quantum numbers.
Furthermore, this principle states that the orbital of an atom can only contain a maximum of two (2) electrons, and they must have opposing spin orientations.
Based on Pauli exclusion principle, we can infer and logically deduce that the number of electrons in an atom which has its quantum number n equal to 2 (n = 2) and ml equal to 2 (ml = 2) would be equal to zero (0).
Read more on Pauli exclusion principle here: brainly.com/question/20564744
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This is an ideal gas law question. It uses the ideal gas law equation, PV =nRT.
P = pressure, V = volume, n = moles, R is the constant, and T is temperature in kelvin. The temperature needs to be converted Kevin first. To convert from Celsius to Kevin, you add 273, meaning that the temp in Kevin is 403K. Then plug all the info into the equation to solve for moles.
(1.00atm)(1.280L)=n(0.0821)(403K)
n = 0.0387moles
To find molar mass, divide mass by moles.
4.03g / 0.0387moles = 104.17g/mol
104g/mol rounded to three significant digits
The average atomic mass of lithium is 6.941 amu.
A titration is a technique where a solution of known concentration is used to determine the concentration of an unknown solution. Typically, the titrant (the know solution) is added from a buret to a known quantity of the analyte (the unknown solution) until the reaction is complete
