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H2SO4 + NaOH = Na2SO4 + H2O

2NaOH(aq)+H2SO4(aq)→2H2O(l)+Na2SO4(aq)



copy paste

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H₂SO₄ + NaOH = Na₂SO₄ + H₂O

2NaOH(aq)+H₂SO₄(aq)→2H₂O(l)+Na₂SO₄(aq)

quoted

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H₂SO₄



NaOH



Na₂SO₄



H₂O



not HOH   oh well?

using smiles

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Naphthalene
https://en.wikipedia.org/wiki/Naphthalene



Naphthalene
https://pubchem.ncbi.nlm.nih.gov/#query=naphthalene



1-Methylnaphthalene
https://pubchem.ncbi.nlm.nih.gov/compound/1-methylnaphthalene



1,3-Dimethylnaphthalene
https://pubchem.ncbi.nlm.nih.gov/compound/1_3-Dimethylnaphthalene



1,2,4,6,7-pentamethylnaphthalene 
https://pubchem.ncbi.nlm.nih.gov/#query=1%2C2%2C4%2C6%2C7-pentamethylNaphthalene

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Mg(s) + 2HCl(aq)    MgCl₂(aq) + H₂(g)

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Citric acid
https://en.wikipedia.org/wiki/Citric_acid

UPAC name
   Citric acid
Preferred IUPAC name
   2-Hydroxypropane-1,2,3-tricarboxylic acid
Chemical formula
   C₆H₈O₇
Molar mass
   192.123 g/mol (anhydrous),
   210.14 g/mol (monohydrate)

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Methyl orange
https://en.wikipedia.org/wiki/Methyl_orange
Preferred IUPAC name
   Sodium 4-{[4-(dimethylamino)phenyl]diazenyl}benzene-1-sulfonate
Other names
   Sodium 4-[(4-dimethylamino)phenylazo]benzenesulfonate
CAS Number   
   547-58-0
Chemical formula
   C₁₄H₁₄N₃NaO₃S
Molar mass
   327.33 g·mol−1




Dimethyl-4-phenylenediamine
https://en.wikipedia.org/wiki/Dimethyl-4-phenylenediamine
Preferred IUPAC name
   N1,N1-Dimethylbenzene-1,4-diamine
Other names
   p-Aminodimethylaniline;
   N,N-Dimethyl-p-phenylenediamine;
   4-(Dimethylamino)aniline;
   p-Amino-N,N-dimethylaniline;
   p-(Dimethylamino)aniline;
   DMPPDA;
   Dimethyl-p-phenylenediamine;
   4-Amino-N,N-dimethylaniline;
   p-Dimethylaminophenylamine;
   DMPD
CAS Number   
   99-98-9
Chemical formula
   C₈H₁₂N₂
Molar mass
   136.198 g·mol−1

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sodium;4-aminobenzenesulfonate;hydrate

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Calcium dicyanide
Ca(CN)2

Calcium cyanamide
CaCN2

[Borek]

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Preferred IUPAC name  Benzenesulfonyl chloride
Chemical formula    C6H5ClO2S

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1 Standard atmosphere = 1.01325 Bar
1 Standard atmosphere = 101.325 Kilopascal
1 Standard atmosphere = 101325 Pascal
1 Standard atmosphere = 14.6959 Pound force per square inch
1 Standard atmosphere = 760 Torr

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Caffeine

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Sodium benzoate



Vitamin C



Benzene