A compound consists of 72.2% magnesium (Mg) and 27.8% nitrogen (N) by mass. What is the empirical formula? Options: Mg4N3, MgN2, Mg3N2 , MgN
Review of Empirical and Molecular Formulas

Flashcard
•
Chemistry
•
10th Grade
•
Hard
Barry Archie
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20 questions
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1.
FLASHCARD QUESTION
Front
Back
Mg3N2
2.
FLASHCARD QUESTION
Front
Find the empirical formula for the elements with percentages: 40.05% S and 59.95% O. Options: SO, SO2, SO3, SO4
Back
SO3
3.
FLASHCARD QUESTION
Front
Given the following: 42.07% Na, 18.89% P, and 39.04% O, determine the empirical formula.
Back
Na3PO4
4.
FLASHCARD QUESTION
Front
What is the molecular formula for a compound with the empirical formula: K2SO4 and a molecular mass of 696g? Options: K2SO4 , K8SO16, K8S4O8 , K8S4O16
Back
K8S4O16
5.
FLASHCARD QUESTION
Front
What is the percent by mass of sodium in NaCl?
Back
39%
6.
FLASHCARD QUESTION
Front
A formula with the lowest whole # ratio of elements in a compound is called
Back
Empirical Formula
7.
FLASHCARD QUESTION
Front
Empirical formula of Si2F6
Back
SiF3
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