It's the first option choice on Plato
<span>10.2 grams of ethyl butyrate synthesized.
The balanced equation for the reaction of butanoic acid (C4H8O2) with ethanol (C2H6O) to produce ethyl butyrate (C6H12O2) is:
C4H8O2 + C2H6O ==> C6H12O2 + H2O
So for each mole of C4H8O2 used, 1 mole of C6H12O2 will be produced. So let's calculate the reactant and product molar masses. Start by looking up the atomic weights of the involved elements:
Atomic weight carbon = 12.0107
Atomic weight hydrogen = 1.00794
Atomic weight oxygen = 15.999
Molar mass C4H8O2 = 4 * 12.0107 + 8 * 1.00794 + 2 * 15.999 = 88.10432 g/mol
Molar mass C6H12O2 = 6 * 12.0107 + 12 * 1.00794 + 2 * 15.999 = 116.15748 g/mol
Moles C4H8O2 = 7.75 g / 88.10432 g/mol = 0.087963905 mol
Mass C6H12O2 = 0.087963905 mol * 116.15748 g/mol = 10.21766549 g
Rounding to 3 significant figures gives 10.2 grams of ethyl butyrate synthesized.</span>
Helium has 8, calcium has 2, potassium has 1, carbon has 4 and argon has 8. Hope this helps. Please name this the brainiest thanks.
Answer:
Linear combination of atomic orbitals (LCAO) is a simple method of quantum chemistry that yields a qualitative picture of the molecular orbitals (MOs) in a molecule. Let us consider H
+
2
again. The approximation embodied in the LCAO approach is based on the notion that when the two protons are very far apart, the electron in its ground state will be a 1s orbital of one of the protons. Of course, we do not know which one, so we end up with a Schrödinger cat-like state in which it has some probability to be on one or the other.
As with the HF method, we propose a guess of the true wave function for the electron
ψg(r)=CAψ
A
1s
(r)+CBψ
B
1s
(r)
where ψ
A
1s
(r)=ψ1s(r−RA) is a 1s hydrogen orbital centered on proton A and ψ
B
1s
(r)=ψ1s(r−RB) is a 1s hydrogen orbital centered on proton B. Recall ψ1s(r)=ψ100(r,ϕ,θ). The positions RA and RB are given simply by the vectors
RA=(0,0,R/2)RB=(0,0,−R/2)
The explicit forms of ψ
A
1s
(r) and ψ
B
1s
(r) are
ψ
A
1s
(r) =
1
(πa
3
0
)1/2
e−|r−RA|/a0 ψ
B
1s
(r) =
1
(πa
3
0
)1/2
e−|r−RB|/a0
Now, unlike the HF approach, in which we try to optimize the shape of the orbitals themselves, in the LCAO approach, the shape of the ψ1s orbital is already given. What we try to optimize here are the coefficients CA and CB that determine the amplitude for the electron to be found on proton A or proton B.
Explanation:
Answer:
glucosa
En la fotosíntesis, la energía solar se recolecta y se convierte en energía química en forma de glucosa utilizando agua y dióxido de carbono. El oxígeno se libera como subproducto.
Explanation: