FeCl3 + NaOH → NaCl + Fe(OH)3 What are the coefficients that should be added to balance this equation? Use complete sentences to explain your answer.
Explain how this chemical reaction demonstrates the conservation of mass.

FeCl3 + 3NaOH → 3NaCl + Fe(OH)3 .

Explanation:

Hello!

In this case, since balancing chemical reactions by inspection requires to equal the number of atoms of each element at both reactants and products side; for the given reaction:

FeCl3 + NaOH → NaCl + Fe(OH)3

We need three chlorine atoms at the right side and three OH⁻ ions at the left side, therefore we can write:

FeCl3 + 3NaOH → 3NaCl + Fe(OH)3

In such a way, since we equal the number of atoms to allow the reaction to be balanced, we evidence this balanced way of the reaction substantiates that matter cannot be created nor destroyed by means of the law of conservation of mass.

Regards!

answer: the figure is attached herewith.

step-by-step explanation:   we are given to sketch a unit circle and label the terminal points corresponding to

in the attached figure, we have drawn a unit circle, with centre at o(0,0) and radius 1 unit. we have labelled the points a, b, c, d and e corresponding to the angles below

∠aox = 60°,

∠box = 120°,

∠cox = 180°,

∠dox = 240°,

∠eox = 300°.

and the coordinates are a(0.5,1), b(-0.5,1), c(-1,0), d(-0.5,-1) and e(0.5,-1).

thus, the answer is complete.

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