Data TableDescription of DataTrial 1Trial 2(include units)(include units)Mass of reaction mixture1.0391.029Percentage of KCIO3 in mixture (see label on bottle)90%.907.Mass of clean, dry delivery 400 mL beaker137.899137.89 9Mass of beaker + water410. 01g408. 79 gTemperature of water20.3 C20.3CBarometricpressure767.5767.5Pressure of water vapor nearest to the measuredIb.5I lo.5temperature (see Table 1)Data AnalysisWrite each calculation below, using data from the data table, or a result from a previouscalculation.1. Calculate the actual mass of KCIO3 that reacted in each trial, by multiplying the mass ofyour reaction mixture by the percentage of KCIO3 in the mixture. Record (your answer) theactual mass of KCIO3 used in each trial in the Results Table on the report sheet. Show asample calculation below.TRIAL Ii. 03gX 900.9279100901. 029 Y: 0.918 9TRIAL 2:100 3. Calculate the theoretical volume yield (In mL) of oxygen gas produced at STP conditions,when 0.920 g of KCIO3 decomposes. Show all work and circle your correctly roundedanswer.Report your answer to 3 sf.(MnO2(s), heat)2 KCI (s)3 02 (g)+2 KCIO3 (s)4. What is the pressure due to just dry oxygen gas at 21.0 °C in a wet gas sample that has atotal pressure of 751.8 mmHg? Use Table 1. Show all work and circle your correctlyrounded answer.

The mass of reaction mixtures - Trial 1 - 1.039 Trial 2 - 1.029

3. Calculate the theoretical volume yield (In mL) of oxygen gaš pr when 0.920 g of KCIO3 decomposes. Show all work and circle your correctly rounded answer. Report your answer to 3 sf. (MnO2(s), heat) 2 KCIO3 (s) 2 KCI (s) 3 02 (8)

3. Calculate the theoretical volume yield (In mL) of oxygen gaš pr when 0.920 g of KCIO3 decomposes. Show all work and circle your correctly rounded answer. Report your answer to 3 sf. (MnO2(s), heat) 2 KCIO3 (s) 2 KCI (s) 3 02 (8)

World of Chemistry, 3rd edition

3rd Edition

ISBN:9781133109655

Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Chapter2: Matter

Section: Chapter Questions

Problem 21A

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Question

Data Table
Description of Data
Trial 1
Trial 2
(include units)
(include units)
Mass of reaction mixture
1.039
1.029
Percentage of KCIO3 in mixture (see label on bottle)
90%.
907.
Mass of clean, dry delivery 400 mL beaker
137.899
137.89 9
Mass of beaker + water
410. 01g
408. 79 g
Temperature of water
20.3 C
20.3C
Barometric
pressure
767.5
767.5
Pressure of water vapor nearest to the measured
Ib.5
I lo.5
temperature (see Table 1)
Data Analysis
Write each calculation below, using data from the data table, or a result from a previous
calculation.
1. Calculate the actual mass of KCIO3 that reacted in each trial, by multiplying the mass of
your reaction mixture by the percentage of KCIO3 in the mixture. Record (your answer) the
actual mass of KCIO3 used in each trial in the Results Table on the report sheet. Show a
sample calculation below.
TRIAL I
i. 03g
X 90
0.9279
100
90
1. 029 Y
: 0.918 9
TRIAL 2:
100

3. Calculate the theoretical volume yield (In mL) of oxygen gas produced at STP conditions,
when 0.920 g of KCIO3 decomposes. Show all work and circle your correctly rounded
answer.
Report your answer to 3 sf.
(MnO2(s), heat)
2 KCI (s)
3 02 (g)
+
2 KCIO3 (s)
4. What is the pressure due to just dry oxygen gas at 21.0 °C in a wet gas sample that has a
total pressure of 751.8 mmHg? Use Table 1. Show all work and circle your correctly
rounded answer.

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