Molecular Formula
Authored by Jose Fraire
Chemistry
9th - 12th Grade
NGSS covered
Used 712+ times
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13 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the percent by mass of magnesium in MgO?
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the percent composition by mass of sulfur in the compound MgSO4 (gram formula mass = 120 g/mol)?
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the empirical formula if you have 88.80% copper and 11.20% oxygen?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the empirical formula if you have 36.84% nitrogen and 63.16% oxygen?
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 180.18?
Tags
NGSS.MS-PS1-1
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the molecular formula for a compound with the empirical formula: K2SO4 and a molecular mass of 696g.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
EF = CF2
Molecular formula mass = 192
MF =
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