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:
there is no limiting reactant.
Explanation:
Given that:
CaF₂ + Br₂ -----> CaBr₂ + F₂
From the above equation;
We can see that there is an equal number of moles in the reactant side of the equation.
i.e.
one mole of CaF₂ reacts with one mole of Br₂.
Thus, there is no limiting reactant.
Answer:
A. unexpected change in odor
Explanation: Common physical changes include melting, change of size, volume, color, density, and crystal form. Example the classic baking soda and vinegar reaction provides evidence of a chemical change due to the formation of a gas and a temperature change.
Answer:
950mL
Explanation:
The following were Data were obtained from the question:
Initial volume (V1) = 100mL
Initial pressure (P1) = stp = 760mmHg
Final pressure (P2) = 80mmHg
Final volume (V2) =..?
The final volume of the gas can be obtained by using the Boyle's law equation as follow:
P1V1 = P2V2
760 x 100 = 80 x V2
Divide both side by 80
V2 = (760 x 100) /80
V2 = 950mL
Therefore, the new volume of the gas is 950mL