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21 votes

Is nitroglycerin synthesis within human digestive system from eating soap possible?

According to the metabocard at HMDB — Nitroglycerin, nitroglycerin is only found in individuals that have used or taken this drug. No known metabolic pathways for glycerin lead to nitroglycerin either....
andselisk's user avatar
  • 38k
11 votes

Is nitroglycerin synthesis within human digestive system from eating soap possible?

First of all, you don't need to eat soap to get glycerin in your system. Fats are broken down by digestion into glycerin and fatty acids. Glycerin is also available commercially as a cough syrup and ...
Level River St's user avatar
8 votes

What does the blue square on a volumetric flask mean?

The etch mark truly could be blue (or in an other color). But (arguably) it is more common to find such an etch mark in plain white on glass ware, for instance beakers, or flasks, or bottles, or ...
Buttonwood's user avatar
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7 votes
Accepted

What does the blue square on a volumetric flask mean?

One of the ASTM International requirements, formerly known as American Society for Testing and Materials, is: ASTM E288 - 10 Standard Specification for Laboratory Glass Volumetric Flasks. 4.5.3 ...
AChem's user avatar
  • 41k
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
  • 1,654
2 votes

Standardizing alkaline ferricyanide solution

A ferricyanide solution contains the ion $\ce{Fe(CN)6^{3-}}$. This ion may react with iodide containing solutions producing ferrocyanide ions $\ce{Fe(CN)6^{4-}}$ ions and elemental iodine $\ce{I2}$ (...
Maurice's user avatar
  • 28.6k

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