Questions tagged [chemical-formula]
For questions related to molecular formula, empirical formula, formula unit, representing the chemical proportions of atoms that constitute a particular chemical compound, molecule, ion, complex, crystal, etc. using chemical element symbols, numbers, and other symbols. NOT related to 'notation', 'composition', 'structure' or 'nomenclature'.
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Reaction between NaCl and NaHCO3 [closed]
Does NaHCO3 (aq) react with NaCl(aq)? I don't think they should undergo any reaction but in the online database it is showing that they react to form Na2CO3 and HCl. Is it correct?
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Sucrose skeletal formula - missing Carbon and Hydrogen [duplicate]
I was reading the Wikipedia article about Sucrose, when I noticed that the skeletal formula was missing some $\ce{C}$ and $\ce{H}$ atoms. The chemical formula being $\ce{C12H22O11}$, I counted the $11$...
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Resorcinol turned brown [closed]
I stored resorcinol in a transparent plastic container with an airtight lid. There was some air captured inside the container too. After some days, it turned brown. please tell what happened to it?
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Hydrogen oxidation number
I am aware that since 2005, IUPAC guidelines established that hydrogen is more electronegative than all elements from group V in the periodic table (you can check official documentation). Thus, $\ce{...
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What does the dot indicate in the molecular formula for white lead? [duplicate]
I came across the following molecular formula for white lead: $2\mathrm{Pb}\mathrm{CO3}·\mathrm{Pb(OH)_2}$. What does the center dot indicate here? Is this a non-covalent interaction of some kind? ...
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Lewis structures and chemical-compound formulas [closed]
In the Lewis structures listed below, M and X represent various elements in the third period of the periodic table. Write the formula of each compound using the chemical symbols of each element:
a.
b.
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I am having trouble with this question on net ionic equation [closed]
Convert into molecular equation:
The reaction between potassium dichromate, ferrous sulphate and sulphuric acid:-
Cr2O7^2- + 14H^+ + 6Fe^2+ ---> 6Fe^3+ + 2 Cr^3+...
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What's the chemical reaction between coffee and sodium bicarbonate? [closed]
Every morning I put sodium bicarbonate into my coffee and I was wondering what chemical reaction this produces and what are the chemicals produced at the end.
I cannot find an answer to this question ...
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What is the chemical formula of ghee? [closed]
What is the chemical formula of ghee (Indian butter)? Also, name the elements present and state the number of their atoms.
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betamechaptoethanol smell [closed]
I am doing my masters in science and today one of our neighbors from the other lab came to heat his samples on a heating pad. the samples were in small tubes which contained Betamechaptoethanol, when ...
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Position of H in formula [closed]
I couldn't come to a resolution with these 2 questions that use hydrogen in the middle of a formula that is equipped with a numerical prefix.
Why is is one inside the bracket and one outside? Am I ...
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How's the formula mass of a molecule calculated? Is it the mass in it's empricial formula or molecular formula? [closed]
Like glucose, butane and benzene. How would you calculate their formula mass? Would you calculate it as the mass of their empricial formula or their molecular formula (basically same as molecular mass)...
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Hydrogen Peroxide 60% Dilution [closed]
Can anyone please help me? I have used various 'dilution' calculators' online, and done the equations on paper. However I DO NOT want to get this wrong and one can be great at math, but help and ...
