Questions tagged [chemistry]

For questions that have to do with chemistry, chemical reactions be they biological or artificial, or the industrial processes of chemistry.

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4
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1answer
84 views

Could life arise using iron pentacarbonyl as a solvant?

Iron planets are planets which lack a significant mantle. These planets are essentially lone planetary cores. Since water and iron are unstable together iron pentacarbonyl and other exotic metal-based ...
6
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2answers
104 views

How would oceans of supercritical CO2 on Venus-like exoplanets look like/behave?

Carbon dioxide turns supercritical above a pressure of 73 atm and 304.25 K (31.10 °C). The surface of Venus fullfils these conditions. The density of the air at the surface is 67 kg/m3, which is 6....
4
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3answers
1k views

Burning to increase mass? [on hold]

I just saw a post that suggested that 1 gallon of gas (6.3 lb) burned through a combustion engine generates 20+ lbs of CO2. I am sure they just missed a decimal or did not remember correctly what they ...
7
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3answers
240 views
+150

How could formamide lakes form on an exoplanet?

I've been recently looking into alternative biochemistries for life and the environments were these could be found. I already asked a question about how ammonia oceans might form a while back. Today I'...
38
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5answers
4k views

Doing chemistry under water?

Aquatic races are usually assumed to be stunted in technological development by the inability to create fire or forge metals. But what about doing chemistry at all? The development of chemistry in ...
5
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1answer
62 views

Life-supporting climate for an organolithium planetary environment?

I'm looking to design one of my warring planets around organolithium chemistry with seas and precipitate primarily composed of a clear organolithium solvent liquid - possibly ammonia. I've searched ...
4
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5answers
170 views

The Itsy-Bitsy Insect Has Made a Web. How Differently Would it Look From Spider Web?

In an alternate Earth, a mass extinction wiped out a percentage of the most successful phylum ever--Arthropoda. All that survived of the class Arachnida were the really small varieties--the ticks, ...
8
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7answers
1k views

Plausability of combustion light-gas guns replacing conventional guns in the future?

My scifi settings armory is filling up with many interesting weapons. However, while energy weapons, Gyrojets, Tangler guns and the like outperform slugthrowers in special applications, concentional ...
1
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1answer
166 views

Hidden specks will blow up the world if overheated: how bad a thing is this?

I'd encourage you to take about 4 min to read the whole post. Multiple masses of parabanic acid appear at random around the world (but see Context and constraints), displacing any matter in their way ...
4
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3answers
143 views

How severe can an Iron Aversion be?

I like the idea of elves having a distinct weakness against iron, to the point where they're intensely scared of it and can't stand the touch of it. My question is: Assuming the Elves are mostly like ...
3
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4answers
96 views

Scientific reason for incense burners to be an effective ward against malevolent “spirits”

Malevolent Spirit: Malevolent spirits are swarms of barely visible machines that have accidentally been imprinted with a deceased person's memories. They posess swarm intelligence and communicate with ...
3
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2answers
85 views

Light-activated Expanding Chemicals

In my world, electricity has not yet been discovered, but they have somehow still managed to attain a technological advancement similar to modern times. I am currently trying to tackle the problem of ...
27
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8answers
7k views

What elements would be created in a star composed entirely of gold?

I'm working with the idea of creating a sun made out of pure gold. Of course, this would be completely man-made. Why would anyone want to do this? Because I want a cool concept like that in my story! :...
4
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1answer
76 views

Can an Insect's Pheromones Be Visible?

In my story, there is a type of bee that releases a pheromone during mating season that is visible at night in brightly lit areas. This is similar to how you can see rain more easily at night if you ...
-1
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2answers
94 views

Is it possible to transmutate hydrogen into the chemicals and fuse them to create bread? [closed]

I was wondering whether it would be chemically possible to take hydrogen from the air and transmute it into the required elements used to make bread. It doesn't have to be bread, it could be any food ...
3
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1answer
87 views

What could cause Fluorocarbons to be present in an Earth-like atmosphere?

Pretty simple (in theory that is) question for one of my worlds. I heard carbon fluorides are intense greenhouse gases but otherwise harmless and didn't lead to large issues (atleast none that I could ...
4
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1answer
90 views

what liquid or substance for rainbow colours oil patterned alien skin?

I was thinking of an alien humanoid charcter for my super powered beings story that would be completely black and faceless with similarities to venom and its strings of symbiotic goo but this ...
7
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3answers
2k views

Iron-age tools, is there a way to extract heavy metals out of a creature?

Assume a location which is heavily polluted with dust of several types of elemental metals (copper, silver, nickel, cobalt etc) or their respective oxides and salts (whatever is stable in humidity and ...
-3
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2answers
172 views

What rare elements would be most needed in building a space station beyond the Earth?

If people were attempting to build a space station beyond the Hill Sphere, (outside of the area where Earth's gravity dominates), and wanted to mine the raw materials for the station from dwarf ...
3
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2answers
170 views

Is an earthlike planet with ammonia oceans even plausible?

The idea of a planet where ammonia replaces water as the dominant liquid in the environment is quite popular in science fiction. I tried to develop a scenario where these kind of oceans are plausible ...
3
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6answers
135 views

Powering a Nanobot Via Nuclear Fission of Its Material

First let me say that I know almost nothing but the basics about nuclear fission. I know more about nano robotics but I've got no degree in the matter, just a rather in depth curiosity and a lot of ...
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2answers
161 views

Implications of a scifi society's industry [closed]

If a space faring society has access to such resources, and technological capabilities that they are able to make alloys strong enough to build large, armored space vessels, extract gas from a gas ...
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3answers
91 views

Heavenly Host Daycare and Correctional Facility for misbehaving gods: Bahamut and Tiamat 1/2: Containment

Once upon a time there was a world called, "The Gone, but not Forgotten Realms", ran by #GamerGate Garry and #ClintonBodyCount Anon. One day, Anon got tired of Garry taking his work for granted and ...
2
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3answers
186 views

Is there an element or compound that is highly reactive to any component of milk?

I like to take inspiration for new fantasy creatures from my dreams, so I get some weird ideas sometimes. Last night I found this species. If milk gets on their skin, the creature looks as if it were ...
7
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3answers
603 views

Rare Earth Elements in the outer solar system

If a space station were to be built in the outer solar system, is there an asteroid beyond Jupiter with a ratio of rare earth elements high enough to make it worthwhile to mine for the rare earth ...
0
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1answer
114 views

Explaining Planet Colors/Compositions

I want to be able to explain: the coloration of my planets when I create them, but I don't have enough knowledge on the colors of elements or chemical compounds. I have done extensive research into ...
5
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3answers
77 views

What plasma temperature range to expect from Earth atmosphere common elements?

I intend to write a character that has the ability to turn nearby gasses into plasma for combat and utility purposes. However, I've been studying how plasma works and (as someone who is not as savvy ...
31
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7answers
16k views

A medieval fantasy adventurer lights a torch in a 100% pure oxygen room. What happens?

Exactly what it says on the tin. Kleeber the warrior is wearing a gambeson and carrying the standard adventurer's gear (leather backpack, 100ft of hemp rope, bedroll, spare clothes, waterskin, dry ...
3
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7answers
345 views

What would be needed to scientifically be able to stand on cloud?

Inspired from people walking on water using cornstarch plus myths such as monkey king, several gods in heaven/celestial palace, and other fiction works. (image from Dragon Ball by Akira Toriyama) I ...
9
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2answers
794 views

Alternative to Magnesium's Role in Photosynthesis

It is a known fact that magnesium is a very important part of photosynthesis and chlorophyll. I have looked everywhere to try to find out this question but I have never really gotten a solid answer. ...
20
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6answers
371 views

What kind of “fog” could be harvested (and processed) for fuel?

In my setting, a permanent "fog" hangs over the ocean. It is thick, granting low visibility to anyone within it. Instead of water droplets, however, this fog would consist of some substance or ...
32
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12answers
7k views

What should be done with the carbon when using magic to get oxygen from carbon dioxide?

So, I'm working on a flintlock fantasy series, and my protagonist is what's called an Arcane Engineer. This is someone who makes magical devices. Among those she has made there is a mask that let ...
12
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3answers
217 views

Is a carbon planet with seas of methanol on its surface scientifically possible?

I am creating a carbon planet with seas of methanol on its surface, but I am not sure that this is possible. It is predicted that carbon planets are depleted of water, since the available oxygen ...
3
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2answers
108 views

What element could be used on a fictional metal-poor planet for biological oxygen exchange?

I'm working on a hard sf novel about humans being forced to survive on a metal-poor planet. They have to take dietary metal supplements at first but eventually a bio-engineer rigs the biochemical ...
5
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2answers
270 views

What would happen if the Earth passed through an interstellar dust cloud?

I understand an interstellar dust cloud as "an accumulation of gas, plasma, and dust in our and other galaxies. Put differently, an interstellar cloud is a denser-than-average region of the ...
20
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0answers
376 views

Plausibility of helium dominated atmospheres on super-Earths

I've been using this helpful diagram a lot for worldbuilding. Now I came to think about the fact that helium is more massive than hydrogen, thus a scenario where hydrogen escapes, but helium is ...
12
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4answers
1k views

The Sword in the Stone

I am trying to recreate King Arthur's the Sword in the Stone using chemistry. I have a couple ideas how this could be done Would any of these work or how it might work? Arthur removes the sword from ...
5
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0answers
62 views

Relationship between Ocean Gases and Atmospheric Gases [closed]

A version of this question is posted in Chemistry SE but doesn't seem to be getting traction there. Perhaps this SE is a bette place for this question? If you think it belongs on a different SE please ...
10
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1answer
158 views

Would A Biological “Cold Haber” Process Deplete an H2/N2 World of its H2 or N2?

Based on my reading on some science papers, large, wet terrestrial planets likely exist that are swathed in a thin atmosphere of nitrogen/hydrogen ($H_2$ & $N_2$). If life evolved on such worlds, ...
2
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4answers
305 views

Helping the Roman Empire with chemistry and metallurgy [closed]

You are a modern chemist and metallurgist and unexpectedly get sent back in time to the era of Caesar Octavius Augustus. After spending a couple years learning ancient Latin, what changes or ...
0
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1answer
59 views

The ability to reduce the movement of particles [closed]

Let's say that there is someone with the ability to reduce the speed of particles' movement (or vibration), he can reduce the movement of molecules, atoms and electrons. I want to know what will this ...
5
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3answers
206 views

Realistic melange - Part 1: Formation

Melange, also known as "the spice", is a fictional drug in Frank Herbert's famous Dune series, which has many benefits (and some drawbacks). In this series of questions, I'll try to see how many of ...
6
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4answers
233 views

How dangerous are sodium salts?

I am in the early stages of planning a story called The Four Flamingos of the Apocalypse. The premise is that the Four Horsemen have manifested on the surface of the earth and are tasked with bringing ...
3
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3answers
114 views

What would be the chemical composition of the crust and core of a planet comprised primarily of diamond?

I’m creating a world for a webcomic and I’m running into some difficulties – namely, my own limitations. I’m not a scientist, and I don’t even know how to start asking the questions I want answered. ...
2
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1answer
127 views

Could there possibly be any alternative biomolecules that could store genetic information like DNA and RNA? [closed]

I study quite a lot of chemistry, biology, and other branches of those fields, alongside some forms of astronomy. As part of a large-scale project I have been working on for a few years and continue ...
8
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11answers
4k views

What is a writing material that persists nearly forever or for a long time? [closed]

I'm designing an alien society with a low population density. I intend for them to have 1 book per topic per place; books update annually as new information arises. I call them books, but they can ...
9
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8answers
5k views

Why did the “Orks” never develop better firearms than Firelances and Handcannons?

The Orks of my world are actually the technologically most advanced civilization. They are bigger and stronger than humans, have bone plates on their heads, greenish skin, and are more akin to the ...
10
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6answers
298 views

What type of chemical catastrophic event might reduce the bioavailability of iron?

I am imagining a world where an astronomical event occurs, like Earth collides with a comet, and humanity is all but wiped out. In their desperate attempt to recover, humans enter a form of stone age. ...
6
votes
1answer
213 views

What are the effects of a nearby supernova on a young solar system?

I'm building a S-Type binary system where the primary star is a black hole. Yet the system formed as a O + K-Spectral class binary and the 20 solar-mass O giant went nova 2,7 myr after both the stars ...
4
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4answers
324 views

A weapon to rapidly change the Earth's atmosphere

I am seeking information and ideas from all you clever people. What I am trying to imagine is a chemical reaction that would change Earths atmosphere rapidly into something else which would be more ...