It’s 18.015 g/mol but that isn’t one of the answers up there.
Answer:
Chromium(III) Sulfite Cr2(SO3)3 Molecular Weight
Mg(ClO)2 - PubChem
Ni(NO3)2
Molecular Formula is calculated using following formula,
Molecular Formula = n (Empirical Formula) ----- (1)
Calculating n;
n = Molecular Weight / Empirical Formula Weight --- (2)
Empirical formula weight = (12×3) + (1×7) + (14×1) + (16×1)
Empirical formula weight = (36) + (7) + (14) + (16)
Empirical formula weight = 73
Putting values in Eq. 2,
n = 146 / 73
n = 2
Putting Value of n and Empirical Formula in Eq. 1,
Molecular Formula = 2 × C₃H₇NO
Molecular Formula = C₆H₁₄N₂O₂
Result:
Molecular Formula of Lysine is C₆H₁₄N₂O₂.
According to the Law of Conservation of Energy, the total amount of energy in the universe remains constant. The total amount we have now is what we had at the time of the birth of the universe around 13.8 billion years ago, and it’ll be the same amount 10^100 years from now, too.
From the calculations, we can see that the pH of the solution is 2.3
<h3>What is Kb?</h3>
The term Kb is know as the base dissociation constant. It gives the extent to which a base dissociates in solution.
Hence;
Ka = Kw/Kb = 1 * 10^-14/ 9.88 x 10-8 = 1 * 10^ -7
We have to set up the ICE table;
NH4^+(aq) + H2O(l)⇔ H3O^+(aq) + NH3(aq)
I 2.55 0 0
C -X +X +X
E 2.55 - x x x
Ka = [H3O^+] [NH3]/[NH4^+]
1 * 10^ -7 = x^2/2.55 - x
1 * 10^ -7 (2.55 - x) = x^2
x^2 - 2.55 * 10^ -7 + 1 * 10^ -7x = 0
x=0.0005 M
So; [H3O^+] = [NH3] = 0.0005 M
pH = -log(0.0005 M) = 2.3
Learn more about pH:brainly.com/question/15289741
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