Answer:
The first energy level has 2 electrons located in the 1s-orbital and the second energy level, which in fluorine's case is the outermost energy level, has 7 electrons, 2 in the 2s-orbital and 5 in the 2p-orbitals. This means that fluorine has a total of 7 valence electrons.
The amount of the excess reactants left over is 0.0042 moles.
<h3>What is the excess reactant?</h3>
We know that the term excess reactant has to do with the reactant that have been left over in the system. Now we know that the reactant that is in short supply is called the limiting reactant and that is the reactant that would determine the amount of the products that we have in the system.
Given that;
Number of moles = Concentration * volume
For the iron (iii) chloride = 0.250 M * 50/1000 L
= 0.0125 moles
For the sodium carbonate= 0.250 M * 50/1000 L
= 0.0125 moles
Thee equation of the reaction is;
2 moles of iron (iii) chloride reacts with 3 moles of sodium carbonate
x moles of iron (iii) chloride reacts with 0.0125 moles
x = 0.00833 moles
Amount of excess reactant left over = 0.0125 moles - 0.00833 moles
= 0.0042 moles
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Answer:
During this reaction electron is transfer from copper to silver.
Explanation:
Ionic equation:
Cu + 2Ag⁺ → Cu²⁺ + 2Ag
Given equation shows that the silver on left hand side is present in the form of cation. The charge on silver is +1 it means one electron is lost by one silver atom. While copper is present in neutral form with oxidation state zero.
Thus copper lose two electron and gain +2 charge these two electrons are accepted by two silver atoms and became neutral.
This equation shows the redox reaction.
Silver gets reduced by gaining the electron and copper gets oxidized by losing the electrons.
Oxidation:
Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.
Reduction:
Reduction involve the gain of electron and oxidation number is decreased.
Answer:
c
Explanation:
was c the correct answer or not
Temperature creates more energy which increases movement thus causing it to speed up the reaction