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5 votes
Accepted

Percentage Yield

Let: A = $\ce{CaC2}$ B = $\ce{C2H2}$ $$\mathrm{yield}=\frac{m_\mathrm{B}}{m_\mathrm{B}^*}=\frac{m_\mathrm{B}}{n_\mathrm{B}^*\;M_\mathrm{B}}=\frac{m_\mathrm{B}}{n_\mathrm{A}\;M_\mathrm{B}}=\frac{m_\...
Sam202's user avatar
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3 votes
Accepted

If LiF is ionic in nature, why can't it dissolve in water?

Not everything ionic dissolves in water. In fact, the ability of water to dissolve ionic substances is rather limited; in most cases freely soluble salts have either cations or anions or both with ...
Oscar Lanzi's user avatar
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3 votes

What's the best way to recover silver from industrial and medical x-ray film?

radiopaedia.org describes the approach usually taken by the industry with The commonest process now used is called "wash". The film is shredded and placed in large baths of a chemical ...
Buttonwood's user avatar
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2 votes

What's the best way to recover silver from industrial and medical x-ray film?

The current price of silver is ~US\$0.95 per gram, or ~US\$1,000/kg. According to Specialty Metals, "10 pounds of medical x-ray film usually contains about one Troy Ounce of silver," about 6 ...
DrMoishe Pippik's user avatar
2 votes

Does chromium chromate — Cr₂(CrO₄)₃ — exist?

I found a paper which mentions the synthesis of the compound. The abstract is as follows: Chromium chromate has been prepared from chromic chloride solution and silver chromate by double ...
Nilay Ghosh's user avatar
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2 votes

If LiF is ionic in nature, why can't it dissolve in water?

I'd like to introduce you to hard-soft acid-base theory. HSAB says that we can classify ions by whether they are hard or soft. Hard ions are small, highly charged, and not very polarizable; soft ions ...
unstable's user avatar
  • 160
1 vote

If LiF is ionic in nature, why can't it dissolve in water?

LiF is sparingly soluble in water. It is better to say that the solubility of LiF is less than any other halide of lithium. In fact, the order of solubility is: $\ce{LiF < LiCl < LiBr < LiI}$ ...
Nightwing 's user avatar
1 vote

Why there is no P−O−Cl bond in phosphoryl chloride?

There are two main reasons: The bond energy of $\ce{P=O}$ is very high as compared $\ce{P-O}$ and $\ce{O-Cl}$ combined. {The bond energy of $\ce{P=O}$ is driving force in many organic reactions. -...
Amit's user avatar
  • 358
1 vote
Accepted

Ionic radii of the first row d-block elements

Using Microsoft Excel, I have sketched out the trendline (x-axis is atomic number Z and y-axis is the radius value r in pm) in the radius of the dication M2+ of the d-block elements (the statistics ...
Shira's user avatar
  • 568
1 vote

Reaction of Lead(II) Chloride and Ammonia

The answer lies in the comment section itself. Silver chloride dissolves in ammonia due to Le Chatelier's principle. For more details, see: What is the reason for the different solubility of silver ...
1 vote

Does chromium chromate — Cr₂(CrO₄)₃ — exist?

Yes for chromate: chromium oxide (5/12) $\ce{Cr5O12}$ has been synthesized via thermal decomposition of chromium trioxide in welded platinum or gold capsules at 240–260 °C and pressure 2–3 kbar during ...
andselisk's user avatar
  • 38k

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