Kaolinite, a clay mineral with the formula Al4Si4O10(OH)8, is used as a filler in slick-paper for magazines and as a raw material for ceramics. Analysis shows that 14.35 g of kaolinite contains 8.009 g of oxygen. Calculate the mass percent of oxygen in kaolinite.

Mass percentage composition of an element in a compound can be calculated by dividing the mass of the element in the compound by the relative formula mass of the compound and expressing it as a percentage.

Therefore;

% composition = (Mass of the element/ relative formula mass)100%

In this case;

We are given the mass of the element (oxygen) and the mass of the compound (Kaolinite) thus;

Mass % of oxygen in kaolinite = (Mass of oxygen/ mass of Kaolinite)100%

% composition of Oxygen = (8.009 g/14.35 g)100%

= 55.81 %

Therefore; the mass percent of oxygen in Kaolinite is 55.81%

samueladesida43 samueladesida43 · Answer 2 · 2022-02-25T12:34:32+01:00

The mass percent of oxygen in kaolinite {Al4Si4O10(OH)8} is 55.81%.

HOW TO CALCULATE MASS PERCENT?

The mass percentage of an element in a compound can be calculated by dividing the mass of the element in the compound by the relative formula mass of the compound and expressing it as a percentage.

That is;

% composition = (Mass of the element/ relative formula mass) × 100

According to this question, we are given the mass of the element (oxygen) as 8.009g and the mass of the compound (Kaolinite) as 14.35g, hence,

Mass % of oxygen in kaolinite = (Mass of oxygen/mass of Kaolinite) × 100

% composition of oxygen = (8.009g/14.35g) × 100

= 55.81 %

Therefore, the mass percent of oxygen in Kaolinite is 55.81%.

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