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How is polystyrene both a thermoset and a theromplastic?

There’s a major distinction between the characteristics of thermoplastics and thermosets, I’m curious to know under what parameters will a thermoplastic be a thermoset or vice versa (if that’s even possible, I’m assuming it’s not and must be only one way around.) I’m thinking maybe the heating cycles of a thermoset will eventually lead to […]

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What “hand wash” ingredients constitute “soap”?

This feels like a stupid question, but it’s something I’d never considered until the new coronavirus outbreak. Full context: Amidst the current crisis we (the general public) have been educated that regular soap is effective against viruses that have a lipid envelope, and that high-alcohol gel (if you can get any) is a good substitute […]

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Sodium Laureth sulfate production process?

I am in trouble with the product Texapon (Sodium Laureth sulfate) 20–30%. Normally, the product is a viscous and transparent liquid. However, the product now become opaque. I have tried to heat and dilute it in water but that did not work. I will really appreciate if you can give me suggestions for this case. […]

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Boiling points of ethylene, formaldehyde and oxygen

The boiling points of ethylene, formaldehyde and dioxygen are -103.7°C, -19°C and −183 °C, respectively. I expect formaldehyde to have the highest boiling point of the three because of dipole moment mostly due to the carbon-oxgyen bond. However, I don’t know why ethylene has a higher boiling point than dioxygen. Different from this similar question, […]

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What is the true caloric impact of Alcohol?

I’ve only had 1 year of basic Chemistry at school, so I am waay too uneducated to answer this question myself: What is the true caloric impact of ingested alcohol (ethanol) in the human body? Here are a few things I presume to be fact: When testing, how many calories a substance contains, it is […]

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Bcc lattice using fortran code

Can anybody help me in writing code for bcc lattice in Fortran, is there any equation for it or something that I can code to create a bcc lattice

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Why does the heat of formation of organic radicals and positive ions decrease with their size and degree of branching at the radical or ionic site?

I am currently studying the textbook Mass Spectrometry, third edition, by Jürgen H. Gross. Chapter 2.4.3 Bond Dissociation Energies and Heats of Formation says the following: The heat of formation of organic radicals and positive ions decreases with their size and even more importantly with their degree of branching at the radical or ionic site. […]

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The heat of formation of organic radicals and positive ions

I am currently studying the textbook Mass Spectrometry, third edition, by Jürgen H. Gross. Chapter 2.4.3 Bond Dissociation Energies and Heats of Formation says the following: The heat of formation of organic radicals and positive ions decreases with their size and even more importantly with their degree of branching at the radical or ionic site. […]

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The heat of formation of organic radicals and positive ions

I am currently studying the textbook Mass Spectrometry, third edition, by Jürgen H. Gross. Chapter 2.4.3 Bond Dissociation Energies and Heats of Formation says the following: The heat of formation of organic radicals and positive ions decreases with their size and even more importantly with their degree of branching at the radical or ionic site. […]

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The difference in Covalent bonds

What the different between the polar covalent bond and non polar covalent bond