Answer: 0.0857 L
Explanation: It's a stoichiometry problem. Balanced equation is given from which there is 1:1 mol ratio between and
.
Chemist wants to produce 12.00 grams of barium sulfate by reacting a 0.6000 M barium chloride solution with excess sulfuric acid.
We know that molarity is moles of solute per liter of solution. Molarity of barium chloride is given. If we know its moles then its volume could easily be calculated.
From given grams of barium sulfate, we calculate its moles and then using mol ratio we calculate the moles of barium chloride.
Molar mass of barium sulfate is 233.38 gram per mol.
The complete set up is shown below using dimensional analysis:
= 0.0857 L
So, 0.0857 L or 85.7 mL of should be used.
Number of moles = 8.3 x 10⁻¹³
<h3>Further explanation </h3>The mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
5 x 10¹¹ atoms of Silver :
Answer:
1.
2.
3.The electron affinity of is zero.
4.
Explanation:
1.
<u>Electron affinity:</u>
It is defined as the amount of energy change when an electron is added to atom in the gaseous phase.
The electron affinity of is as follows.
2.
<u>Ionization energy</u>:
Amount of energy required to removal of an electron from an isolated gaseous atom.
The third ionization energy of Titanium is as follows.
3.
The electronic configuration of Mg:
By the removal of two electrons from a magnesium element we get ion.
has inert gas configuration i.e,
Hence, it does not require more electrons to get stability.
Therefore,the electron affinity of is zero.
4.
The ionization energy of is follows.