Inorganic compounds generally do not have C-H bonds, while organic compounds do have such bonds. The distinction between inorganic and organic chemistry, however, is far from absolute.

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What is the volume of one mole liquid ammonia at -50 °C?

If I start with $1~\mathrm{mol}$ of $\ce{NH3}$ gas and condense it into a liquid at around $-50~^\circ\mathrm{C}$ about how many liters of $\ce{NH3}$ will I have? How do I calculate this.
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11 views

What does these clay mineral surfaces mean? [on hold]

Some clay minerals possess oxi-hydroxy, aluminol, ferrol and silanol surface, please explain their structure and how soil phosphate retention can occur on these clay minerals?
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0answers
28 views

Interaction between Ozone and Carbon Dioxide

We are trying to predict what will happen when carbon dioxide gas is introduced into a contact chamber that serves as an ozone contact chamber. These contact chambers presently oxidize compounds found ...
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1answer
24 views

NO2 gas was detected in FTIR

We have a laser chamber full of $\ce{F2}$ gas (no air should be in the chamber) and several parts including steel, wires, ceramics, zinc.... This is for laser generation so the temperature is pretty ...
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1answer
46 views

Any chemicals combines readily oxygen?

I am designing an industrial process which can remove oxygen from air. This chemical should combine readily with oxygen in the presence of heat. In particular, I am looking for a chemical with the ...
-1
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0answers
17 views

What is the equilibrium equation for this reaction? [on hold]

For a Chemistry assignment I was asked to find the equilibrium equation for the following: When Potassium Thiocyanate ($\ce{KSCN}$) is mixed with Iron (III) Nitrate ($\ce{Fe(NO3)3}$ in solution, ...
6
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1answer
40 views

What does a square mean in a chemical formula?

We find in the book Minerals and their Localities by Jan H Bernard and Jaroslav Hyrsl several chemical formulas containing a square. What does this square means? An example: Franciscanite $\ce{Mn3 ...
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0answers
15 views

Acidic strength of oxides of nitrogen

Why do we compare acidic strength of oxides of nitrogen even though they don't have hydrogen?
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2answers
44 views

Why is this named incorrectly?

In my Ap chem class I got this sheet with the names of a bunch of common polyatomic ions. One of them is named monohydrogen phosphate ($\ce{HPO4^2-}$). In naming, I learned not to use ‘mono-’ if it’s ...
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0answers
18 views

Ambidentate ligands

What are the eligibility criteria for ligand to be ambidentate? Is the size of cation and anion or hard and soft acids are only conditions for ligand to be ambidentate?
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1answer
16 views

Variation in atomic sizes in the transition elements

From left to right across a period, effective nuclear charge increases in the transition series, just like in the p block, and so atomic size decreases. Here the electrons are being added to the d ...
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0answers
19 views

Does precipitated copper carbonate contain impurities

I recently performed a double replacement reaction between copper sulfate and sodium carbonate to yield copper carbonate as a precipitate. I then filtered the precipitate, but I noticed that the ...
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1answer
44 views

Ideal among the given gases

Which one among the following shows maximum ideal behaviour? $\ce{NH3}$ $\ce{HCl}$ $\ce{Rn}$ $\ce{H2O}$ Ammonia and water have hydrogen bonding so they're ruled out. That leaves ...
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1answer
41 views

How to obtain nitrogen using only homemade utilities?

I am now constructing a RC plane. I would like to fill the tires of the landing gear with nitrogen to avoid combustion of oxygen during landing. I would therefore like to obtain a small amount of ...
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1answer
32 views

Ligand Binding Paradox?

I have a ligand and a receptor whose concentrations are represented by $ L $ and $ R $ respectively. As can easily be shown, with dissociation constant $ K_D = \frac{[L]\times [R]}{[LR]} $ the ...
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36 views

neutralizing sodium cyanide

For an upcoming science fair I wanted to do an experiment on neutralizing sodium cyanide with hydrogen peroxide. this experiment will only be done in a closed lab and not in public and will be ...
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1answer
32 views

How to calculate the mass of oxygen produced in the decomposition of potassium chlorate? [closed]

How many grams of $\ce{O2}$ are produced in the decomposition of $43.4~\mathrm{g}$ $\ce{KClO3}$? $$\ce{2KClO3(s) -> 2KCl(s) + 3O2(g)}$$
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0answers
15 views

Relative strength of metal hydrides as reducing agents

Question: Out of $CH_4, CaH_2, FeCl_2$ and $BeH_2$, which compound would produce the most strongly reducing aqueous solution? Thoughts: Out of the hydrides, I would say that $CaH_2$ stands a good ...
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1answer
25 views

Is there a way to make long delay ink?

I would like to make some invisible ink that apears by itself after some time, preferably at least a couple of days. I want to write a dedication in a book with it, so it would probably be fine if the ...
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1answer
31 views

The pentagonal pyramidal structure of XeOF5- [closed]

Why does the $\ce{XeF6}$ molecule have an octahedral structure while $\ce{XeOF5-}$ has a pentagonal pyramidal structure, despite both molecules having 7 electron pairs?
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1answer
42 views

How to find the amount of moles given mass percentage data

A hydrated aluminium sulphate, $\ce{Al2(SO4)3.xH2O}$, contains 8.10% of aluminium by mass. Find the value of x. My attempt: (Assuming 100g sample) Calculate the amount of aluminium using the ...
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0answers
5 views

What results from combining monopotassium phosphate, magnesium sulfate and calcium nitrate?

If I mix monopotassium phosphate, magnesium sulfate and calcium nitrate together in aqueous solution, what chemicals will result? Are these safe to combine (i.e. any toxic gasses, etc.)? I thought ...
7
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42 views

Why is acidic hydrogen peroxide a potent oxidizer?

When hydrogen peroxide acts as an oxidizer it itself is reduced. Broadly this means that the peroxide bond is broken and that water is formed. However, why is there a tendency for hydrogen peroxide ...
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1answer
43 views

What is the correct structure for sulfur dioxide?

A question from the National Chemistry Olympiad (Germany-2008) goes as follows: Besides the composition of a substance the structure of its molecule or ion is of interest. To predict the structure ...
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1answer
52 views

How to remove tap water hardness?

I am looking for ways of removing water hardness from tap water, specifically permanent hardness. I have tried working on some methods, e.g., to perform precipitates using sodium hydroxide and ...
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1answer
35 views

Do (simple, inorganic) salts ionize completely in water when they dissolve?

Specifically: Suppose I add equal parts (i.e. the same number of moles of each) sodium bicarbonate and potassium sulfate into a container of distilled water large enough to dissolve them completely. ...
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1answer
173 views

What do these mineral classification symbols mean?

For my birthday I got an awesome mineral specimen case, as pictured below. What piqued my interest was the notations in the lid where the minerals are described with 5 specifications: C (obviously for ...
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2answers
51 views

Miscibility of Molten Metals

While reading about the size of atoms and ions of the Group 1 elements in the textbook "Concise Inorganic Chemistry" by JD Lee, I came across this line: The Li+ is much smaller than the other ...
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1answer
27 views

Making Cast Iron from Pig Iron

In making cast iron from pig iron - the cruder form of iron - coke and limestone are added to pig iron and scrap iron in a furnace. Cast iron is more refined form of iron and has lesser carbon ...
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1answer
36 views

Is the redox method applicable to all chemical reactions?

Is it possible that some chemical reactions can't be balanced through the redox method? Because it seems to me that the elements on the reactants side have the same oxidation states with the product ...
2
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1answer
37 views

Why do ligands have such a small effect on overall absorption of a complexed ion?

When a metal cation is complexed, there is strong UV-Vis absorption due to the splitting of its $d$ orbitals, thereby allowing electronic transitions. My understanding is that ligands contribute very ...
2
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0answers
20 views

Curious precipitate from substitution reaction

Two solutions were prepared. 'Solution A' being $\ce {Na2S4}$ prepared from aqueous $\ce {NaOH}$ and elemental sulfur, the mixture heated and additional sulfur added until sulfur remained as a ...
4
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1answer
93 views

pH of sodium metasilicate anhydrous vs pentahydrate when dissolved in water

I'm not a chemist and don't remember much chemistry from school, so please forgive a naive question (I've read the Wikipedia article on sodium silicate though). I'm researching this topic to make ...
6
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1answer
65 views

Why do we not see silicon in a structure like graphite?

Silicon exists in a structure similar to diamond, with 4 silicon atoms bonded to each other in a tetrahedron. Why do we not see it exist in a structure like graphite? Is it even possible to get ...
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74 views

Why is BCl3 a monomer whereas AlCl3 exists as a dimer?

What makes dimerization possible in $\ce{AlCl3}$? Are there 3c-2e bonds in $\ce{AlCl3}$ as in $\ce{BH3}$?
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1answer
40 views

What happens to iron(III) sulfate (ferric sulfate) in aqueous solution?

Iron(II) sulfate (ferrous sulfate) is a salt that, in an aqueous solution, dissolves and yields $\ce{Fe^{2+}(aq)}$ and $\ce{SO4^{2-}(aq)}$. It then decomposes to ferric sulfate shortly thereafter. ...
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36 views

% Fe in a sample

Seems so simple but is confusing me as when I take into account final weight I don't get one of the answers. An iron ore was analysed by dissolving a $1.1324~\mathrm{g}$ sample in concentrated ...
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Is it possible to dissolve SnCl2 in water?

I have a solution of ammonia and water. I need to prepare a solution of $\ce{CuCl2}$ and $\ce{SnCl2}$ in ammonia and water. I can not dissolve $\ce{SnCl2}$ in water. Is it possible to dissolve it or ...
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1answer
62 views

Beryllium hydride violates the octet rule [duplicate]

Beryllium hydride does not obey the octet rule. Isn't this impossible, unless there are more elements comprising the molecule?
2
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1answer
35 views

Reaction between a vinegar/salt/hydrogen peroxide mixture as an etching solution and copper

I am looking for the less harmful chemical solution to serve as an etching solution. After many searches, my interest went to a vinegar/salt/hydrogen peroxide solution. I have to ask then if the ...
6
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2answers
76 views

Why does concentrated HCl fume?

It is a common observation that a concentrated solution of hydrochloric acid kept in the lab fumes. What is the chemistry behind this phenomenon? Does $\ce{HCl}$ somehow react with the moisture in the ...
3
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0answers
50 views

What happens when two nitrates react with each other?

I am trying to determine the products of the ammonium nitrate and copper nitrate. Any ideas on if the below reaction is correct? $$\ce{NH4NO3 + Cu(NO3)2 -> Cu(NH3)4(NO3)2}$$ Ammonium Nitrate + ...
6
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1answer
64 views

How are solubilities of hydrate salts determined when competing equilibria are unavoidable?

When you calculate the solubility product constant for a salt and one of its hydrates, you sometimes get drastically different numbers! I don't know how this can be because they both dissociate into ...
2
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1answer
34 views

Calculating Molar Volume from crystal volume

I am trying to calculate molar volume of certain crystal lattices to be used for crystal growth kinetics calculations. The information I have is the crystal volume & crystal lattices. For example ...
2
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1answer
37 views

Why is microcosmic salt called so?

I really see no relation between the terms microcosmic and the salt's structural formula, $\ce{Na(NH4)HPO4.4H2O}$. Devoting sufficient time on Google didn't help at all. Information about the name ...
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Question about stability of two structures of chlorine trifluoride

Why is the first structure on the left more stable than the second one on the right? In the first one the angle between the two pair of nonbonding electrons is about 120° which is a lot less than ...
0
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30 views

some doubts in Bent's Rule [duplicate]

"The central atom projects the hybrid orbitals of greater p character towards the more ionic bond and greater s character towards the more covalent bond.----explain this and please say in what sense " ...
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0answers
18 views

Discussion about Bent's rule [duplicate]

Can we say:More electronegative substituents prefer hybrid orbitals having more s character and more electropositive substituents prefer hybrid orbitals having more s character? If it is correct then ...
2
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0answers
20 views

Generating Precipitation Diagrams with CompuTherm Pandat

I am trying to develop precipitation diagrams for an Ag-Cu-Sn alloy to figure out the kinetics involved using the CompuTherm Pandat Software (Demo Version). The precipitation diagrams need the ...
4
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1answer
39 views

N2O production vs air distillation

After producing nitrogen by distilling air, how is that nitrogen used with the oxygen to yield nitrous oxide ($\ce{N2O}$)? I see $\ce{N2O}$ available in different purities from various suppliers, but ...