Empirical Formulas Lesson

Quiz
•
Chemistry
•
11th - 12th Grade
•
Hard
Standards-aligned
Charles Martinez
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
H2O2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
How many sodium ions are there in 2.5 mol of NaCl?
1.5 x 1024 ions
1.5 molecules
6.022 x 1023 ions
3.0 x 1024 molecules
Answer explanation
2.5 mol of NaCl contains 2.5 mol of sodium ions and 2.5 mol of chloride ions.
If making 5 mol out of 2.5 mol here doesn't make sense to you, please inform your teacher.
5.
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?
Answer explanation
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
1.00 grams of a compound containing copper and chlorine was found to contain 0.524 grams of copper. Determine the empirical formula.
CuCl
CuCl2
CuCl1.97
Cu2Cl
Answer explanation
Tags
NGSS.HS-PS1-7
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