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If solutions in water of iron(III) sulfate and sodium sulfide are mixed, the reaction is:

Fe2(SO4)3 (aq) + 3 Na2S (aq) => 3 Na2SO4 (aq) + Fe2S3 (s).

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fe + 2 O ------> FeO2 iron II oxide

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i'm not entirely sure but i think its C2H2 + 2AgNO3 -> Ag2C2 + 2HNO3

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calcium carbonate reacts with acid water to form a neutral lake

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2NaOH + H2SO4 --> Na2SO4 + 2H2O

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White Lotion USP is prepared by chemical reaction below between Sufurated Potash and Zinc Sufate. ZnSO4 × 7H2O + K2S3 × K2S2O3 -------> ZnS ¯ + S2 ¯ + K2SO4 + K2S2O3 + 7H2O

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This is the formation of Ammonium acetata, NH3 + CH3COOH = CH3COO-NH4+

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3NaHCO3 + C6H8O7 --> C6H5Na3O7 + 3CO2 + 3H2O

(sodium bicarbonate) + (citric acid) --> (sodium citrate) + (carbon dioxide) + (water)

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The number of each element in the reactants side should be equal to the number of the same element in the products side, because we know that the mass of reactants and product must be equal.

As an example :

Nitrogen Gas + Hydrogen gas ---> Ammonia

N2 + 3H2 --> 2NH3

Reactants Products

N : 2 N : 1*2 = 2

H : 2*3 =6 H : 3*2 = 6

NOTE : When you add a coofecient in front of a compound, all the elements in the compound should be multiplied by it.(not just the following element)

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2NO2(g)+7H2(g)---->2NH3(g)+4H2O(l)

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4Fe + 3O2 + 6H2O ---> 4Fe(OH)3

The chemical equation for rusting of iron is :-

2Fe + 3/2 O2 ----> Fe2O3.xH2O

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The mass of NaOH is 79,9942 g.

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Fe3O4 is the mineral magnetite, with aproper chemical name of Fe(II, III) oxide. it exhibits ferrimagnetism.

It has iron atoms as FeII and FeIII.

An old way of writing it was FeO.Fe2O3

The balanced equation for production from the elements is :-

3Fe + 2O2 -> Fe3O4

Commercially it is made by for example redung Fe2O3 with CO

3Fe2O3 + CO = 2Fe3O4 +CO2

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it is already balanced

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A coefficient is a number, a multiplier or a factor which measures a property.

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We usually think of chemical reactions as reactions becoming products. Reality is that products can also become reactants by a reverse reaction. A two-directional arrow indicates that the "forward" and "reverse" reactions exist in a certain balance, or equilibrium.

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The coefficient (not a subscript or superscript) placed immediately before the formula of the reactant in the equation shows how many moles of a reactant are involved in the reaction. If there is no explicit coefficient, a value of 1 for the coefficient is assumed.

The coefficient in front of the molecule tells its relative number of moles.

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2H2 (g) + O2 (g) --> H2O (l)

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H2 is a hydrogen molecule made of two hydrogen atoms bonded together.

The preceding two refers to the number of moles of H2 molecules in the chemical equation.

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Unbalanced: C25H52 + O2 → CO2 + H2O

Balanced: C25H52 + 38 O2 → 25 CO2 + 26 H2O

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The chemical equation for sodium added to water is : 2Na(s) + 2H2O(l) ----> 2NaOH(aq) + H2(g) Hope this helps all the rising chemistry students! :D

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KHC8H4O4(aq) + NaOH(aq) → KNaC8H4O4(aq) + H2O(l)

NaOH(aq) + KHP(aq) => Na+ + KP- + H2O(l)

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NH4NO3(aq) → N2O(g) + 2H2O(l)