Data Table A) Mass of crucible (g) 20.442 B) Mass of magnesium and crucible (g) 20.717 C) Mass of magnesium (g) 0.215g D) Mass of magnesium oxide (g) First weighing: 0.453 Second weighing: 0.455 Average mass (g) 0.454g E) Mass of oxygen (g) 0.179g Calculations Watch this video only if you need help in analyzing the data collected. you https://www.youtube.com/watch?v3DVpgb1Y321WA 1. Atomic mass of magnesium from the Periodic Table is 24.305 g/mol. x= Moles of Mg used in this experiment = 0.0113145 mol of mg (Show your calculation)

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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
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Data Table
A) Mass of crucible (g)
20.442
B) Mass of magnesium and crucible (g)
20.717
C) Mass of magnesium (g)
0.215g
D) Mass of magnesium oxide (g)
First weighing: 0.453
Second weighing: 0.455
Average mass (g)
0.454g
E) Mass of oxygen (g)
0.179g
Calculations
Watch this video only if you need help in analyzing the data you collected.
https://www.youtube.com/watch?v3DVpgb1Y321WA
1. Atomic mass of magnesium from the Periodic Table is
24.305
g/mol.
x = Moles of Mg used in this experiment =
0.0113145 mol of mg
%3D
(Show your calculation)
Transcribed Image Text:Data Table A) Mass of crucible (g) 20.442 B) Mass of magnesium and crucible (g) 20.717 C) Mass of magnesium (g) 0.215g D) Mass of magnesium oxide (g) First weighing: 0.453 Second weighing: 0.455 Average mass (g) 0.454g E) Mass of oxygen (g) 0.179g Calculations Watch this video only if you need help in analyzing the data you collected. https://www.youtube.com/watch?v3DVpgb1Y321WA 1. Atomic mass of magnesium from the Periodic Table is 24.305 g/mol. x = Moles of Mg used in this experiment = 0.0113145 mol of mg %3D (Show your calculation)
2. Atomic mass of oxygen from the Periodic Table is
g/mol.
y = Moles of O reacted with Mg in this experiment =
(Show your calculation)
3. a) Write the empirical formula (Mg.Ox) for magnesium oxide using the values for "x" and "y".
b) Divide the subscripts by the smaller value and write the empirical formula with the smallest
whole number ratio of the Mg and O atoms.
4. Calculate the theoretical %Mg in magnesium oxide.
At.mass Mg (g/mol)
Molar mass MgO (g/mol)
% Mg:
x100 =
5. Calculate the experimental %Mg in the oxide.
mass Mg (g)
% Mg (exp)=
x 100 =
mass MgO (g)
Transcribed Image Text:2. Atomic mass of oxygen from the Periodic Table is g/mol. y = Moles of O reacted with Mg in this experiment = (Show your calculation) 3. a) Write the empirical formula (Mg.Ox) for magnesium oxide using the values for "x" and "y". b) Divide the subscripts by the smaller value and write the empirical formula with the smallest whole number ratio of the Mg and O atoms. 4. Calculate the theoretical %Mg in magnesium oxide. At.mass Mg (g/mol) Molar mass MgO (g/mol) % Mg: x100 = 5. Calculate the experimental %Mg in the oxide. mass Mg (g) % Mg (exp)= x 100 = mass MgO (g)
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