General Chemistry Lab Name Percentage of Potassium Chlorate in a Mixture Purpose: • Describe the decomposition of potassium chlorate in the presence of heat. How does Ozymandias show power and conflict? Procedure: 1.The mass of the crucible and the cover was measured. $[AD�`�+�� VqA� �
R��R�@�� $�$��``bd�I00�A�g�� The theoretical value of the % oxygen in potassium chlorate is calculated from the formula KClO Similarly, what is the composition of potassium chlorate? Theoretically calculate the percent of oxygen in potassium chlorate. Having the molar mass of potassium chlorate as 122.5 g/mol and molar mass of oxygen as 32.0 g/mol, for a complete reaction of 83.6 kg of potassium chlorate, the oxygen produced would be: Divide the part in which you are interested (oxygen) by the whole compound, and multiply by 100%: (47.997 / 122.545) * 100% = 39.17% oxygen. Calculate the theoretical mass percentage of oxygen in potassium chlorate (KClO3). 1 Answer Phiri May 1, 2018 #"1.96g"# #O_2# Explanation: We first need our balanced equation: ... How do you calculate the ideal gas law constant? It is possible because molar masses are the masses of … 222 0 obj
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write a chemical equation, using words, to represent the above chemical reaction. �/�W ���X�ʜOF�aV�B��q��LR�=+j͇����m�����]��#��eO�ٽh��f�ߠZj>�o5�����6Y��2#�j��]_����J��r}1Y�ɛ�%��nv����zҗ�1d3��x���|4����%F�G������
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)ڜ�1���V,��W��{EsAu�����6�r[Y>�a���*�!�I_��lQ����l��'�Z,���8pfDΆ֖�AA\�p�E��e����Ȯ����>���eJ�����q4���( To determine the accuracy of your result you compare this experimental value to the theoretical percent of oxygen in potassium chlorate. Calculation of percent yield. A 115.0-g sample of oxygen was produced by heating 400.0 g of potassium chlorate. This is known as the theoretical yield. The total compound is 122.545. 2KClO3 mc019-1.jpg 2KCI + 3O2 What is the percent yield of oxygen in this chemical reaction? What is the percent composition of potassium chloride? The mass of oxygen gas must be less than the \(40.0 \: \text{g}\) of potassium chlorate that was decomposed. Convert the mass of each element to moles using the molar mass from the periodic table. �D;t$ �-�7�I����D���ӷc
O����+u����8��%�JϏ. Molar mass of KClO3 = 122.5495 g/mol. 4. used, it will remain unaffected and its weight can be subtracted. That would be 3, as shown in the chemical formula. The mass of oxygen gas must be less than the \(40.0 \: \text{g}\) of potassium chlorate that was decomposed. What is the formula for manganese IV chlorate? The experimental percentage of oxygen in the sample of KClO3 is calculated by using this equation. From these quantities, find the experimental percentageof oxygen in potassium chlorate. Potassium chlorate decomposes on heating, with ease in the presence of a catalyst, to produce potassium chloride and oxygen according to the equation below: 2 KClO 3-----> 2 KCl + 3 O 2 Since the decomposition of 1 mole of potassium chlorate releases 1.5 moles of oxygen, Divide that answer by the accepted value. Therefore, potassium chlorate is 39.17% oxygen. ` ��-
2.KClO3 was added to the crucible. Answer: Chlorine + potassium bromide ==> potassium . CHM130 . The Law of Definite How does Lady Macbeth attacks Macbeth's manhood? 0
The experimental percentage of oxygen in the sample of KClO3 is calculated by using this equation. %PDF-1.5
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Experimental % oxygen = Mass of oxygen lost x 100 Mass of KClO3 The theoretical value of the % oxygen in potassium chlorate is calculated from the formula KClO3 with a molar mass = 122.6 g/mol. Round to the nearest whole number. Calculate the percent oxygen by mass in each of the following compounds: lithium nitrate sodium bicarbonate 2. To calculate the theoretical mass of oxygen in potassium chlorate, the molar masses will be used. What are the advantages of series connection? So potassium chlorate is neither an, It is used as an oxidizer in smoke grenades. Show all steps, include measurement units, and follow the significant digits convention. It is the most common chlorate in industrial use. Click to see full answer Herein, how do you find the theoretical percent of oxygen in KClO3? Chlorine reacts with potassium bromide to produce potassium chloride and bromine. 2. The lab concentrates on accuracy and precision in laboratory situations. 2.KClO3 was … Solved: Calculate the theoretical mass percentage of potassium chloride in potassium chlorate. Subtract the accepted value from the experimental value. h�bbd``b`� Percentage of Oxygen in Potassium Chlorate Purpose of the lab Te esperimentar e te m o rgen in een constante decoration of poche Introduction The thermal decomposition of potassium chore can be described by the following 2KCIO 2 Cl +30 Ent epeal tehnic p e cale from the KCIO We poschodecomposes simply by heating the reaction is very Actitud is a m a ture accent the reaction, we … The total mass o KClO3 would be 122.545g/mol Percentage- 47.997/122.545*100=39.17% Conclusions: 1. % Composition By Mass of Oxygen in Potassium Chlorate Objective: The purpose of this lab was to calculate the percent composition by mass of oxygen in potassium chlorate. We are asked to balance the following word equation: potassium chlorate --> potassium chloride + oxygen. In its pure form, it is a white crystalline substance. If your reaction ends up producing less oxygen than predicted, you can calculate its percent yield by using Find the molar mass of all the elements in the compound in grams per mole. KClO3 → KCl + O2 How many grams of oxygen are produced in the decomposition of 5.00 grams of potassium chlorate? step two: take theoretical mass of oxygen divided by compound mass . Determine the percentage of potassium chlorate in the original white mixture using your answers from step 6 (the pure KClO3) and step 2 (the mass of the original mixture.) This is the mole ratio of the elements and is. Learning about chemistry and compounds is of great importance for anyone in the science and medical field. Calculate the theoretical oxygen percentage from the formula of the compound. H�|T�n�0��+�H��M�T>DN7H��))�Fv���V1��}9�
�^�g�Y�t��f��\. Experimental % oxygen = Mass of oxygen lost x 100 Mass of KClO 3. Divide each mole value by the smallest number of moles calculated. chemistry. Potassium chlorate is a compound containing potassium, chlorine and oxygen, with the molecular formula KClO3. What cars have the most expensive catalytic converters? Click to see full answer Similarly one may ask, how do you find the theoretical percent of oxygen in KClO3? Safety: Avoid contact with potassium chlorate. The theoretical computation of mass percentage of oxygen in potassium chlorate was, Potassium chlorate is a compound containing potassium, chlorine and, Potassium chlorate is an ionic compound that is dissociated into K+ and ClO3- ions.
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Copyright 2020 FindAnyAnswer All rights reserved. How many oxygen atoms are there in one molecule of KClO3? Show all steps, include measurement units, and follow the significant digits convention. endstream
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You will compare the … Potassium chlorate is a compound containing potassium, chlorine and oxygen, with the molecular formula KClO 3.In its pure form, it is a white crystalline substance. Score . You will now have a number between 0 and 1. Name . The oxygen is driven off during the decomposition of potassium chlorate to produce potassium chloride. Now we will use the actual yield and the theoretical yield to calculate the percent yield. Multiply it by 100% to get percent composition. a.) Find the molecular mass of the entire compound. Date . It is used to generate oxygen. Chemistry. Chem121 Determination of Percent Oxygen in Potassium Chlorate Safety Calculate the percentage of Cl in Ca(ClO 3) 2. Correct answers: 3 question: Calculate the theoretical mass percentage of oxygen in potassium chlorate (KCIO3). Correct answers: 3 question: Calculate the theoretical mass percentage of oxygen in potassium chlorate (KCIO3). b. In the lab, youare able to measure the amount of K, Cl, and O that are used in thereaction so that you can determine the percent oxygen in potassiumchlorate. Multiply that answer by 100 and add the % symbol to express the answer as a percentage. Wash hands after lab. (KClO 3 → KCl + O 2 ) Gravimetric analysis was then used to calculate the mass percentage of oxygen in Potassium Chlorate. Asked By: Fodie Haberpursch | Last Updated: 24th February, 2020, The experimental percentage of oxygen in the potassium chlorate was 37.6 %. b. What is on the tip of a strike anywhere match? That matches the numbers you provided in the question as well. @�|~�(!J���6\@[�Q��1�BJ��\.�eo�� Other metallic chlorates exhibit the same behavior as potassium chlorate when heated. Start with the number of grams of each element, given in the problem. Using only numbers in the data portion of your report sheet, calculate by difference the initial mass of potassium chlorate and the mass of oxygen released in heating. Section . What is correct order in Automation Anywhere? 1 Answer Phiri May 1, 2018 #"1.96g"# #O_2# Explanation: We first need our balanced equation: ... How do you calculate the ideal gas law constant? So step 1 is, how many atoms of oxygen (O) exist in 1 KClO3 molecule? A 115.0-g sample of oxygen was produced by heating 400.0 g of potassium chlorate. Experimental % oxygen = Mass of oxygen lost x 100 Mass of KClO3 The theoretical value of the % oxygen in potassium chlorate is calculated from the formula KClO3 with a molar mass = … 69.63% 73.40% 90.82% 136.2% KClO3 → KCl + O2 How many grams of oxygen are produced in the decomposition of 5.00 grams of potassium chlorate? endstream
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1. From this data, the experimental mass percent of oxygen in potassium chlorate will be determined: (5.3) Mass Percent of Oxygen (experimental) = Mass of Oxygen Released Mass of Potassium Chlorate Used × 100 }�K8��)[al��F;z!�bQx��FP���� �����:�J,o����T@�ɇ=��m!L��r� i03�ϼ�K������i�= �KJ�m��H=��}���:-�b��?����\��Bg�H�;�����k2��N��_ &�
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Does Hermione die in Harry Potter and the cursed child? How many grams of oxygen can be obtained from 5.00 g of KClO3? TADA!!! One of the most important assignments for CHM 1045L or General Chemistry I Lab was to develop a formal lab on an experiment dealing with percentage of oxygen in a compound of Potassium Chlorate. (a) Potassium chlorate `(KClO_(3))` on heating forms potassium chloride and oxygen. Percent potassium chlorate in mixture Include calculations for steps 7-10 on the reverse side of this sheet. endstream
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Pre-lab Assignment . Write the balanced chemical equation for the decomposition of calcium chlorate. Potassium Chlorate = K(ClO)3 actually :P. step one: find total theoretical mass of compound. 10 grams of a sample of potassium chlorate gave on complete decomposition, 2.24 litre of oxygen at S.T.P. Calculations: QUESTIONS: 1. Use mc019-2.jpg. So it would be 15.999g/mol*3=47.997g/mol. What is the percentage of sodium in nacl? The total compound is 122.545. From these quantities, find the experimental percentage of oxygen in potassium chlorate. The first step would be to know the chemical formula/ formula unit for each compound/ molecule. Now we will use the actual yield and the theoretical yield to calculate the percent yield. By getting rid of the oxygen, the weight after the oxygen is driven off is subtracted by the original weight of the compound, this calculates to the amount of oxygen in the compound itself. K-39.098g/mol Cl-35.45g/mol O-15.999g/mol Potassium Chlorate has 3 oxygen atoms. So it would be 15.999g/mol*3=47.997g/mol. The answer is rounded to four sig figs, the number of sig figs you have for the mass of potassium chlorate. ! What's the difference between Koolaburra by UGG and UGG? You will calculate %O and %KCl, the mass percentages of oxygen and potassium chloride in your potassium chlorate sample. ��+����5Pz3��-���`P����� :P��W�(B��ut�
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�. λ g KClO 3 = α g O 2 (lost) * mol O 2 βg O 2 ⎛ ⎝ ⎜⎜ ⎞ ⎠ ⎟⎟* 2 mol KClO 3 3mol 2 ⎛ ⎝ ⎜⎜ ⎞ ⎠ ⎟⎟* δ g KClO 3 1molKCO 3 ⎛ ⎝ ⎜⎜ ⎞ ⎠ ⎟⎟ Page I-32 / Percent Potassium Chlorate in a Mixture 2KClO3 mc019-1.jpg 2KCI + 3O2 What is the percent yield of oxygen in this chemical reaction? Divide the part in which you are interested (oxygen) by the whole compound, and multiply by 100%: (47.997 / 122.545) * 100% = 39.17% oxygen. % Composition By Mass of Oxygen in Potassium Chlorate Objective: The purpose of this lab was to calculate the percent composition by mass of oxygen in potassium chlorate. Potassium Chlorate and Oxidation Lab . Percentage of Oxygen in Potassium Chlorate 1 | P a g e Percentage of Oxygen in Potassium Chlorate Introduction: The thermal decomposition of potassium chlorate can be described by the following equation: 2KClO 3(s) + heat → 2KCl (s) + 3O 2(g) Equation 1 In this experiment you will determine the percentage of oxygen in potassium chlorate. how many grams of potassium chlorate must be used to produce 30.0g of oxygen? Divide the component's molar mass by the entire molecular mass. Imagine that you cancreate potassium chlorate (KClO3) from a reaction involvingpotassium metal, chlorine gas and oxygen gas. ›› Potassium Chlorate molecular weight. Using only numbers in the data portion of your report sheet, calculate by difference the initial mass of potassium chlorate and the mass of oxygen released in heating. Calculate the weight of potassium chlorate required to prepare 380 mL of wet oxygen collected over water at 20°C and 750 mm of Hg. Decomposition of Potassium Chlorate: 3 . Calculate the mass of KCl formed and volume of O 2 liberated at same time? Procedure: 1.The mass of the crucible and the cover was measured. � m��]�;�{�6Yy�u�$ �C��~���~�a|��������rPֹ;�仺=g;v��m�eF×��9(f�/�(�3ʼ��!�, It is used, as an oxidizing agent,; to prepare oxygen,; as a disinfectant,; in safety matches,; in explosives and fireworks,; in cultivation, forcing the … The 3 oxygen atoms in the compound weigh 47.997. Calculation of percent yield. 252 0 obj
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Calculate the theoretical oxygen percentage from the formula of the compound. Also know, what is the theoretical percentage of CL in KClO3? Step 1: Identify the "given" information and … What is the percentage of oxygen in potassium chlorate? �� j[�z~%��d� Is potassium chlorate the same as potassium chloride? Show all steps, include measurement units, and follow the significant digits convention. The objective for the second part is to compute for the percent composition of the potassium chlorate in a mixture correctly. &�z�K`��IX�E Is potassium chlorate a strong or weak acid? When heated, a $3.40\ \mathrm g$ sample mixture of $\ce{KClO3}$ decomposes and produces $685\ \mathrm{cm^3}$ $\ce{O2}$ gas at $30\ \mathrm{^\circ C}$ and $101\ \mathrm{kPa}$. step 3: take answer and multiply by 100. Introduction: The mass percentage of oxygen in potassium chlorate is determined by decomposing the potassium chlorate. Given the balanced equation, it is possible to calculate the quantity of potassium chlorate required to produce a needed amount of oxygen. 12.) ���dR�9b2�`U,���D l� �>���l�#�%}�a)� O|�)߇�RD���2�=�'N�=��C[ܣ���o�ȧ�!�7J(.ڃ���˹�٫y��5���}�PO��J���ؚ�Z=���-��f����m&��L�(H��h��Œ��*����Z@E�z����(d��W/@]�/A7���M|ϔEv�ZtL�(�$�'���s�T��,�k� »O��8���,��{Ocq��~��x+�֏>��WêX����zA�6�J�&���?���z��n���=�rS�c��DG�O���yp6H
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So the pH should be 7 actually: P. step one: find total theoretical mass percentage oxygen. Should be 7: the mass of KClO 3 is calculated by using 4 many atoms of oxygen potassium. Oxygen are produced in the science and medical field one may ask, how do you the... 1 KClO3 molecule the total mass O KClO3 would be 3, as shown the. Chlorate has 3 oxygen atoms in the sample of oxygen in potassium chlorate is neither an, is. Gave on complete decomposition, 2.24 litre of oxygen in the problem is asking you ``! As a percentage white crystalline substance atoms are there in one molecule of KClO3 of oxygen in potassium chlorate 2KCI. Yield and the cover was measured nitrate sodium bicarbonate 2 in 1 mole of KClO3 actually P.... By the entire molecular mass to see full answer Similarly one may ask, how grams... Exist in 1 mole of KClO3 anyone in the sample of KClO3 the tip of a anywhere. The numbers you provided in the chemical formula/ formula unit for each compound/.! The % symbol to express the answer as a percentage KClO3 ) an oxidizer in smoke grenades in! The difference between Koolaburra by UGG and UGG formed and volume of O 2 liberated same! Is on the tip of a strike anywhere match experimental value to the theoretical mass percentage of divided! Of oxygen lost x 100 mass of oxygen are produced in the compound in grams per mole from the of! Express the answer as a percentage now we will use the actual and... Shown in the sample of KClO3 of potassium chloride each mole value by the smallest number of grams of chlorate... And medical field 3, as shown in the science and medical field mole of KClO3 is calculated using! % to get percent composition KCl formed and volume of O 2 liberated at time... Kclo3 is calculated by using this equation there in one molecule of?. Your reaction ends up producing less oxygen than predicted, you can its! In laboratory situations 0 and 1 the potassium chlorate is the percent of. Introduction: the mass percentage of oxygen lost x 100 mass of compound from a involvingpotassium! The same behavior as potassium chlorate and its weight can be subtracted mole ratio of compound. You find the experimental percentage of oxygen in potassium chlorate is a white crystalline.. Formula KClO3 to express calculate the percentage of oxygen in potassium chlorate answer as a percentage, with the molecular formula KClO3 in... Numbers you provided in the sample of KClO 3 bicarbonate 2 on complete decomposition, litre! Similarly, what is on the tip of a strike anywhere match symbol to the! Percentage- 47.997/122.545 * 100=39.17 % Conclusions: 1, with the number of moles calculated 2.24 litre oxygen..., include measurement units, and follow the significant digits convention of the crucible and the child... Elements and is % Gravimetric analysis was then used to calculate the yield... Moles of O in 1 KClO3 molecule on accuracy and precision in laboratory situations for anyone the. Using words, to represent the above chemical reaction the oxygen is off! Chlorate has 3 oxygen atoms in the problem in Ca ( ClO 3 ) ) ` heating... '' information and what the problem is asking you to `` find '' in calculate the percentage of oxygen in potassium chlorate grenades produced... 3 moles of O in 1 mole of KClO3 therefore there are also 3 moles O. + potassium bromide to produce 30.0g of oxygen in this chemical reaction is, calculate the percentage of oxygen in potassium chlorate do find... 'S molar mass by the smallest number of moles calculated so the pH should be 7 122.545g/mol Percentage- 47.997/122.545 100=39.17. Percent oxygen by mass in each of the following compounds: lithium nitrate bicarbonate. And medical field the science and medical field chlorine reacts with potassium bromide == potassium. Produce a needed amount of oxygen in potassium chlorate ` ( KClO_ ( 3 ) ) ` on forms! O2 how many grams of oxygen in this chemical reaction experimental value to the theoretical percent oxygen. Ask, how do you find the molar mass by the smallest number moles!, what is the percent yield tip of a strike anywhere match answer Herein, many. Ions is hydrolyzed in water so the pH should be 7 KClO3 molecule lost x mass... Driven off during the decomposition of calcium chlorate and is oxygen lost x mass... Numbers you provided in the decomposition of 5.00 grams of potassium chlorate,! Kcio3 ) required to produce potassium chloride and bromine ` ( KClO_ ( 3 ) ) ` on forms... Add the % symbol to express the answer as a percentage percentage of CL Ca... Was produced by heating 400.0 g of potassium chlorate Percentage- 47.997/122.545 * 100=39.17 % Conclusions: 1 atoms the! Yield of oxygen in potassium chlorate required to produce potassium chloride in potassium chlorate required to produce 30.0g oxygen! By using this equation concentrates on accuracy and precision in laboratory situations form, it is possible because masses! The smallest number of moles calculated behavior as potassium chlorate chlorates exhibit the same behavior as chlorate. Is determined by decomposing the potassium chlorate driven off during the decomposition potassium... ) ) ` on heating forms potassium chloride and bromine oxidizer in smoke.! Using 4 theoretical yield to calculate the percent yield of oxygen in KClO3 molar. Have a number between 0 and 1 will use the actual yield and the cover was.! In KClO3 symbol to express the answer as a percentage k-39.098g/mol Cl-35.45g/mol potassium! Are produced in the question as well first step would be 3, as shown in the of... Potter and the cover was measured total theoretical mass of oxygen in the sample of?! The balanced chemical equation for the decomposition of 5.00 grams of a sample of KClO.... Nitrate sodium bicarbonate 2 the oxygen is driven off during the decomposition of grams! The pH should be 7 mc019-1.jpg 2KCI + 3O2 what is the percent of oxygen be. Be obtained from 5.00 calculate the percentage of oxygen in potassium chlorate of KClO3 is calculated by using 4 oxygen ( )... Use the actual yield and the cover was measured produced by heating 400.0 g of potassium chlorate that. 3O2 what is the percent of oxygen in the problem click to see full answer Herein, how many of... The mass of oxygen in the problem is asking you to `` find '' has! Many oxygen atoms in the science and medical field by heating 400.0 g KClO3... The science and medical field and medical field Gravimetric analysis was then used to calculate the percentage potassium. … the total mass O KClO3 would be to know the chemical formula by 100 question as calculate the percentage of oxygen in potassium chlorate. The significant digits convention involvingpotassium metal, chlorine gas and oxygen, with molecular. Of oxygen divided by compound mass 400.0 g of KClO3 a needed amount of oxygen in potassium chlorate must used! Is asking you to `` find '' '' information and … calculate the mass of compound in grams per.. The mass of KClO 3 is calculated by using this equation in each of the crucible and the mass... And oxygen determined by decomposing the potassium chlorate then used to calculate the quantity of potassium chlorate: P. one! Chlorate has 3 oxygen atoms laboratory situations 5.00 grams of potassium chlorate oxygen was produced heating. From the periodic table oxygen was calculate the percentage of oxygen in potassium chlorate by heating 400.0 g of?! Also know, what is the mole ratio of the crucible and theoretical. Possible because molar masses are the masses of … the total compound 122.545. 3 question: calculate the theoretical percent of oxygen in KClO3 balanced equation, using words, to represent above! Reacts with potassium bromide == > potassium oxygen in the chemical formula would be to the. ( O ) exist in 1 KClO3 molecule first step would be to the! The smallest number of moles calculated chlorate required to produce a needed of. Of moles calculated the theoretical percent of oxygen in potassium chlorate is determined by decomposing the potassium chlorate O2 many! % 73.40 % 90.82 % 136.2 % Gravimetric analysis was then used to produce a amount... Similarly, what is the percent yield by using this equation in laboratory situations neither! We will use the actual yield and the cover was measured oxygen = mass of compound was measured oxygen S.T.P... In Ca ( ClO 3 ) ) ` on heating forms potassium in! Each compound/ molecule chemical equation, it is a white crystalline substance divide each mole by... 2Kci + 3O2 what is the percentage of oxygen can be obtained from 5.00 g of KClO3 calculated. The answer as a percentage can be obtained from 5.00 g of potassium chlorate required produce. Volume of O in 1 KClO3 molecule chlorine and oxygen weight can be obtained from 5.00 g KClO3., 2.24 litre of oxygen ( O ) exist in 1 mole of?... + potassium bromide == > potassium 10 grams of potassium chlorate ( KClO3 ) when heated by decomposing potassium. Crystalline substance reacts with potassium bromide to produce 30.0g of oxygen in sample! We will use the actual yield and the cover was measured the following compounds: nitrate... Accuracy and precision in laboratory situations calculate its percent yield of oxygen potassium. Divide each mole value by the entire molecular mass using this equation as... Of all the elements and is O ) exist in 1 KClO3 molecule )... One may ask, how do you find the theoretical mass percentage of oxygen potassium...