Answer:
The answer to your question is -2855 J
Explanation:
Reaction
2C₂H₆ + 7O₂ ⇒ 4CO₂ + 6H₂O
Formula
Heat of reaction = ΔHrxn = ΣΔHrxn products - ΣΔHrxn reactants
Substitution
ΔHrxn = { 4(-393.5) + 6(-241.8)} - {2(-84.7) + 7(0)}
ΔHrxn = {-1574 -1450.8} - {-169.4}
ΔHrxn = -3024.8 + 169.4
ΔHrxn = -2855.4 J
Mg2+ is the positive ion of the neutral atom Mg. This means that the neutral atom Mg lost the two excess electrons in its outermost energy level and became a positive ion with the two excess positive charges. To become neutral again, the Mg2+ ion has to regain two electrons again to balance the negative charge with the excess two positive charges.
Answer:
Explanation:
Hello,
In this case, the undergone chemical reaction is:
In such a way, the acidic redox balance turns out:
Which leads to the total balanced equation as follows:
Thus, as the mass of oxalic acid is not given, one could suppose a value of 1 g (which you can modify based on the actual statement) in order to compute the oxalic acid moles as shwon below:
Whereby the molality results:
Remember you can modify the oxalic acid mass as you desire.
Best regards.
The Match of element to its name, atomic mass is as below
element symbol atomic mass or atomic number
Antimony Sb 51
sulfur S 32
Silicon Si 14
<u><em>Explanation</em></u>
From periodic table Antimony is a chemical element with symbol Sb and atomic number 51.
Sulfur on the other hand is a chemical element with symbol S and has a atomic mass of 32
silicon is an element with symbol Si and atomic number 14
The correct answer is B)wave mechanical. Hope that helps! If you have any questions about the answer i gave you please let me know!
