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I believe it is:

%O=mass of 3 mol of O / mass of 1 mol of potassium chlorate *100%

If you measured it:

%O=mass of oxygen lost / mass of potassium chlorate *100%

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Q: How do you calculate the theoretical mass percentage of oxygen in potassium chlorate?
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Related questions

What is potassium and chlorate?

potssium is K chlorate is CLO3 potssium chlorate is a dangours produce. Formula: KClO3 we are a potassium chlorate manufacture in china.so we know more about the potassium chlorate the potassium chlorate produce method is electrolyze-filtration-drying.


What is valencies of Potassium hypochlorite Potassium chlorite Potassium chlorate and Potassium perchlorate?

potassium chlorate is used in match industy. we are a potassium chlorate factory in china. potssium chlorate also can be used in firework . if you want to know more about the potassium chlorate ,please visit the related link.


What type of compound is potassium chlorate?

Potassium chlorate is KClO3


What is the name of the compound with the formula KClO3?

The name of the compound with the formula KClO3 is "potassium chlorate".


What is the formula for potassium chlorate?

The formula for potassium chlorate is KClO3.


What elements is potassium chlorate a compound of?

Potassium chlorate is KClO3 and it consists of potassium, chlorine and oxygen.


What the conclusion of composition of potassium chlorate?

we can know that potassium chlorate is very poisonous.


Is potassium chlorate polar covalent?

No. Like all potassium compounds, potassium chlorate is ionic.


What is a potassium chlorate in nature?

Potassium chlorate is a stable, colorless ionic compound in nature.


How many grams of potassium chlorate would be produced by reacting 500 grams of potassium chlorate with oxygen gas?

Nothing is produced, 500g potassium chlorate will be the same 500 g potassium chlorate after reaction. Actually there is no reaction at all.


Is potassium chlorate soluble?

Almost all salts containing potassium are soluble, including KClO3 (potassium chlorate).


Percentage of oxygen in potassium chlorate?

First calculate the molar mass of the potassium chlorate KClO3 K is 39.1, Cl is 35.45 and O is 16 x 3 =48 The molar mass for one mol is 122.55g/mol The percent composition is the part the oxygen contributed divided by the total molar mass times 100(to convert a decimal to a percent) 48/122.55 x 100 is 39.167% Potassium Chlorate is 39.167 percent oxygen