Skip to main content
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
  • 38.3k
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
  • 30.1k
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
  • 41.2k
7 votes
Accepted

What role does CaCl2 play in a gelation medium?

Likely, the $\ce{CaCl2}$ induces precipitation, or gelation, in this case. This is called salting out. Another example is using salting out to gel poly(N-isopropylacrylamide) for 3D-printing. Simply ...
DrMoishe Pippik's user avatar
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
  • 28.9k
1 vote

Does the side of filter paper matter?

OP has the following basic question as stated in the title: Does the side of filter paper matter? Quick answer to this question is yes, it does matter according to this manufacturer, which has ...
Mathew Mahindaratne's user avatar
1 vote

What is Q-carbon? Does it exist?

A study by Nayna Khosla and Jagdish Narayan from 2022 does address the fabrication of these Q-carbon nano-structures. The research describes a method to manufacture various carbon nanostructures ...
Ronith's user avatar
  • 1,283

Only top scored, non community-wiki answers of a minimum length are eligible