
Molar Conversions, Empirical Formula, & Molecular Formula Quiz
Authored by PETER NGUYEN
Chemistry

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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
How many molecules are in 2.5 mol of Sodium Chloride?
1.505x1023
146
4.15
1.5x1024
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
How many moles are in 3.01 x 1022 atoms of magnesium?
0.0500 moles
1.81 x 1046 moles
5.00 x 1021 moles
500 moles
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the mass in grams of 0.89 mol of Calcium Chloride?
111 grams
0.008 grams
99 grams
none of the choices
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Molecular Formula = C2F6
Choose the correct empirical formula.
CF
C2F6
C3F
CF3
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which pair has the same empirical formula?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Empirical Formula = CF2
Molecular formula mass = 192 g/mol
Molecular Formula = ?
C4F8
C8F4
C3F6
C2F4
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