Determine the subscript in KClOx - (Reaction at the bottom of the question) 1 Determine masses...
Determine the subscript in KClOx - (Reaction at the bottom of the question)
1 Determine masses of sample, oxygen and potassium chloride. Use molar mass to calculate the moles
2a The ratio of moles is simply the value calculated by dividing the two moles values. This value rounded to the correct number of sig. figures, is what should be recorded ( include units)
2b Coefficients c and b come from rounding your ratio of moles to a whole number ratio.
2c Once c and b are determined write out the balanced equation to determine a and then finally x. ( Make sure the value makes sense)
4 Use experimental masses to determine experimental percent Oxygen in the compound ( sample) & use molar masses to determine the theoretical % Oxygen in the compound, using your value for "x" in the compound formula.
Mass of test tube+MnO2= 16.2135g
Mass of test tube+ MnO2+ sample (being KClOx) = 17.3119g
Mass of test tube +residue after reaction is complete (being MnO2+KCl) = 16.7846g
-Mass of sample, mass of oxygen, mass of KCl, moles of O2, moles of KCl ? (show all work)
-ratio moles O2 /moles KCl (show all work) Please explain this step in detail.
Reaction: a KClOx(s) [MnO2 utilized as catalyst] ---> b Kcl (s) + c O2 (g)
Homework Answers
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Determine the subscript in KClOx - (Reaction at
the bottom of the question)
1 Determine masses...
PARTI DETERMINATION OF "x" in KCIO DATA Unknown Identification Letter or Number Mass of test tube...
PARTI DETERMINATION OF "x" in KCIO DATA Unknown Identification Letter or Number Mass of test tube + MnO2 1.0979 Mass of test tube + MnO2 + sample Mass of test tube + residue after reaction complete 16.0586g 17-06909 16.5981 DATA ANALYSIS Mass of sample 1.0204g 10.4709 9 Mass of KCI 0.5295 Moles of 02_0.01472 Moles of KCI 0.00238 03 Ratio moles 02/moles KCl (report using correct sp a KCIO (3) Mno, b KCI (8) + O2(g) Coefficients b= KCIO, Subscript...
Questions 1-4 Before reaction: a. unknown number b. weight of beaker, test tube weight of beaker,...
Questions 1-4
Before reaction: a. unknown number b. weight of beaker, test tube weight of beaker, test tube, KCIO3 KCI d. weight of beaker, test tube, KCIO3 KCI. Mno2 e. weight of KCIO3 KCl sample (c-b) After reaction: f. volume of oxygen collected at laboratory temperature and pressure -22.3% 246.3 n (determined by the amount of water expelled from the flask g. temperature of the oxygen h. water vapor pressure at the measured temperature (table: Handbook of Chemistry and Physics)...
PARTI DETERMINATION OF "x" in KCIO. DATA Unknown Identification Letter or Number Mass of test tube + MnO2 Mass of...
PARTI DETERMINATION OF "x" in KCIO. DATA Unknown Identification Letter or Number Mass of test tube + MnO2 Mass of test tube + MnO2 + sample in. 1927 129614 1765919 Mass of test tube + residue after reaction complete DATA ANALYSIS Mass of sample_0.76879 Mass of oxygen_0.3075 a Mass of KCI 0.40 a Moles of 02 Moles of KCI Ratio moles 02/moles KCI (report using correct sp) – a KCIO, (s) who; b KCI (S) + CO2(g) Coefficients b= КСІ...
You are given an unknown containing KClO3. Following the procedure in your manual, you obtain the...
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Lab Questions Part 1 Mass of test tube + MnO2 = 31.562 g Mass of test tube + MnO2 + KClO3 = 32.489 g Mass of test tube after heating = 32.173 g 1. Based on the data above, what is the mass of O2 released in grams? 2. What’s is the experimental yield of O2 in moles? 3. What is the theoretical yield of O2 in moles? 4. Calculate % error % error = |(theoretical-experimental) / (theoretical) | x...
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Sample 2 97.79 g 102.95 g 101.15 g Sample 1 (a) Mass of 98.32 g crucible...
Sample 2 97.79 g 102.95 g 101.15 g Sample 1 (a) Mass of 98.32 g crucible + lid (b) Mass of crucible, lid + 103.76 g KCIO3 (c) Mass of crucible, lid + 102.01g residue after 1st heating (d) Mass of crucible, lid + residue after 101.69 g 2nd heating (e) Mass of crucible, lid + 101.68 g residue after 3rd heating 101.05 g 101.01 g Data Analysis .Use your data to determine the experimental mass percent of oxygen in...
c. How many moles of oxygen gas were produced? Round your answer to 4 sig figs....
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QUESTIONS Experiment 6 Determination of Chemical Formule 43 PRE LAB A sample of a compound made...
QUESTIONS Experiment 6 Determination of Chemical Formule 43 PRE LAB A sample of a compound made entirely from copper and oxygen was found to have a total mass of 0.1431 The mass of the copper in the compound was found to be 0.12718 a. Calculate the number of moles of copper in the sample. b. Calculate the mass of oxygen in the sample. c. Calculate the number of moles of oxygen in the sample. d. Use the mole ratio of...
PARTI DETERMINATION OF "x" in KCIO DATA Unknown Identification Letter or Number Mass of test tube + MnO2 1.0979 Mass of test tube + MnO2 + sample Mass of test tube + residue after reaction complete 16.0586g 17-06909 16.5981 DATA ANALYSIS Mass of sample 1.0204g 10.4709 9 Mass of KCI 0.5295 Moles of 02_0.01472 Moles of KCI 0.00238 03 Ratio moles 02/moles KCl (report using correct sp a KCIO (3) Mno, b KCI (8) + O2(g) Coefficients b= KCIO, Subscript...
Questions 1-4
Before reaction: a. unknown number b. weight of beaker, test tube weight of beaker, test tube, KCIO3 KCI d. weight of beaker, test tube, KCIO3 KCI. Mno2 e. weight of KCIO3 KCl sample (c-b) After reaction: f. volume of oxygen collected at laboratory temperature and pressure -22.3% 246.3 n (determined by the amount of water expelled from the flask g. temperature of the oxygen h. water vapor pressure at the measured temperature (table: Handbook of Chemistry and Physics)...
PARTI DETERMINATION OF "x" in KCIO. DATA Unknown Identification Letter or Number Mass of test tube + MnO2 Mass of test tube + MnO2 + sample in. 1927 129614 1765919 Mass of test tube + residue after reaction complete DATA ANALYSIS Mass of sample_0.76879 Mass of oxygen_0.3075 a Mass of KCI 0.40 a Moles of 02 Moles of KCI Ratio moles 02/moles KCI (report using correct sp) – a KCIO, (s) who; b KCI (S) + CO2(g) Coefficients b= КСІ...
Name Section Date 、tu ,a Q. READ THE EXPERIMENTAL DISCUSSION FIRST! Complete the data table below using correct significant digits. Show the calculations on a separate page A. Gas Data 1. 2. 3. 4. 5. Barometric Pressure (torr) Temperature O2 gas Vapor Pressure of Water (torr) (See table in APPENDIX) Volume of O2 gas collected (mL) Dry O2 Pressure (A1-A3)/760.0 768 torr 24.0°C 22.4 torr 354.0 mL atm B. Mass Data Before Reaction 1. Weight of beaker, test tube, KCIO...
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c. How many moles of oxygen gas were produced? Round your answer to 4 sig figs. Question le Answer d. Calculate the experimental value for the gas constant R with units of L'atm/mol K. Round your answer to 4 sig figs. . 23L PV = nRT Question 1d Answer olzan o (2 mol 10.08. 2016 (29ct 2. While decomposing a KCIO, mixture, the experiment apparatus used to collect the oxygen gas sprang a leak. Would this error cause the following...
QUESTIONS Experiment 6 Determination of Chemical Formule 43 PRE LAB A sample of a compound made entirely from copper and oxygen was found to have a total mass of 0.1431 The mass of the copper in the compound was found to be 0.12718 a. Calculate the number of moles of copper in the sample. b. Calculate the mass of oxygen in the sample. c. Calculate the number of moles of oxygen in the sample. d. Use the mole ratio of...
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