Which of the following describes the electron sharing between two oxygen atoms?
1 answer:
The right answer is A. <span>Each oxygen shares two electrons with each other.
(I took the quiz)</span>
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Answer:
![\large \boxed{84.7 \, \%}](https://tex.z-dn.net/?f=%5Clarge%20%5Cboxed%7B84.7%20%5C%2C%20%5C%25%7D)
Explanation:
Mᵣ: 58.44 278.11
Pb(NO₃)₂ + 2NaCl ⟶ PbCl₂ + 2NaNO₃
m/g: 26.3
1. Moles of NaCl
![\text{Moles of NaCl} = \text{26.3 g NaCl} \times \dfrac{\text{1 mol NaCl}}{\text{58.44 g NaCl}} = \text{0.4505 mol NaCl}](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20NaCl%7D%20%3D%20%5Ctext%7B26.3%20g%20NaCl%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B1%20mol%20NaCl%7D%7D%7B%5Ctext%7B58.44%20g%20NaCl%7D%7D%20%3D%20%5Ctext%7B0.4505%20mol%20NaCl%7D)
(b) Moles of PbCl₂
![\text{Moles of PbCl${_2}$} = \text{0.4505 mol NaCl} \times \dfrac{\text{1 mol PbCl${_2}$}}{\text{2 mol NaCl}} = \text{0.2253 mol PbCl${_2}$}](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%20PbCl%24%7B_2%7D%24%7D%20%3D%20%5Ctext%7B0.4505%20mol%20NaCl%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B1%20mol%20PbCl%24%7B_2%7D%24%7D%7D%7B%5Ctext%7B2%20mol%20NaCl%7D%7D%20%3D%20%5Ctext%7B0.2253%20mol%20PbCl%24%7B_2%7D%24%7D)
(c) Theoretical yield of PbCl₂
![\text{Mass of PbCl${_2}$} = \text{0.2253 mol PbCl${_2}$} \times \dfrac{\text{278.11 g PbCl${_2}$}}{\text{1 mol PbCl${_2}$}} = \text{61.52 g PbCl${_2}$}](https://tex.z-dn.net/?f=%5Ctext%7BMass%20of%20PbCl%24%7B_2%7D%24%7D%20%3D%20%5Ctext%7B0.2253%20mol%20PbCl%24%7B_2%7D%24%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B278.11%20g%20PbCl%24%7B_2%7D%24%7D%7D%7B%5Ctext%7B1%20mol%20PbCl%24%7B_2%7D%24%7D%7D%20%3D%20%5Ctext%7B61.52%20g%20PbCl%24%7B_2%7D%24%7D)
(d) Percent yield
![\text{Percent yield} = \dfrac{\text{ actual yield}}{\text{ theoretical yield}} \times 100 \,\% = \dfrac{\text{52.1 g}}{\text{61.52 g}} \times 100 \, \% = \mathbf{84.7 \,\%}\\\\\text{The percent yield is $\large \boxed{\mathbf{84.7 \, \% }}$}](https://tex.z-dn.net/?f=%5Ctext%7BPercent%20yield%7D%20%3D%20%5Cdfrac%7B%5Ctext%7B%20actual%20yield%7D%7D%7B%5Ctext%7B%20theoretical%20yield%7D%7D%20%5Ctimes%20100%20%5C%2C%5C%25%20%3D%20%5Cdfrac%7B%5Ctext%7B52.1%20g%7D%7D%7B%5Ctext%7B61.52%20g%7D%7D%20%5Ctimes%20100%20%5C%2C%20%5C%25%20%3D%20%5Cmathbf%7B84.7%20%5C%2C%5C%25%7D%5C%5C%5C%5C%5Ctext%7BThe%20percent%20yield%20is%20%24%5Clarge%20%5Cboxed%7B%5Cmathbf%7B84.7%20%5C%2C%20%5C%25%20%7D%7D%24%7D)
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