Determination of empirical formulas

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timer Asked: Mar 8th, 2019
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answer lab questions

answer lab questions

Tutor Answer

TeacherSethGreg
School: Duke University

Attached.

Experiment #4 problems
Question 1
2Mg + O2 → 2MgO
Mass of Mg: 0.300g
Mass of MgO: 0.497g
Mass of O: (0.497-0.300) = 0.197g
0.300

% Mg = 0.497 𝑥100% = 60.36%
0.197

% O = 0.497 𝑥100% = 39.64%
Question 2
Carbon: 27.29%
Oxygen: 72.71%
MM of Carbon: 12
Moles of carbon:

27.29
12

= 2.27

MM of Oxygen: 16
M...

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Anonymous
Thanks, good work

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