It is important in gravimetric analysis to add an excess amount of precipitating ions to a solution containing an analyte because it helps to determine the mass of the analyte.
<h3>What is Gravimetric analysis?</h3>
This is a method which is used in the determination of the quantitative determination of the ion being analyzed(analyte) based on its mass.
Adding an excess amount of precipitating ions to a solution containing an analyte will make it easier for the mass of an analyte to be determined.
It is also important for the precipitate to be a pure substance with a definite and known composition which therefore makes it the most appropriate reason.
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What exactly do you mean by elements 'x', 'y', and 'z'? You can search for an atom on the periodic table by searching for its atomic number, or you can base your search on atomic radius, electronegativity, or ionization energy.
Atomic radius increases as you move down the groups in the periodic table. Electronegativity and ionization energy decrease as you move down the groups, but increase as you move from left to right on the periodic table.
I hope this answered your question! Not entirely sure what you mean by elements x, y, and z.
What are the answers I need to know or is it writing
Mm = #g / #mol --> 56.2g / 0.492 mol
mm = 114.2g/mol
Answer is: <span>C-an ether.
</span>Ethers are an organic compounds that contain an oxygen atom<span> connected to two </span>alkyl<span> or </span>aryl groups, the general structure of an ether is R-O-R' (<span>R and R' are any </span>alkyl<span> or </span>aryl substituent).
In this example <span>black railroad cars are carbon atoms and one red railroad car is oxygen atom.</span>