
Empirical Formulas
Quiz
•
Chemistry
•
10th Grade
•
Medium
Teresa Justice
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6 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the empirical formula if you have 36.84% nitrogen and 63.16% oxygen?
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An empirical formula:
is a formula that calculates the coefficients of a compound in a balanced equation.
is the simplest whole-number ratio of moles of elements in the compound.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What do you do when you do not get whole numbers in the ratio?
add 2 to each element
add two to only the one with the half
multiply the one with the half only by two
multiply all of them by two
add two to all of the ratios
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
You are given the following percentages: 40.05% S and 59.95% O. Find the empirical formula for these elements. (keep two decimal places throughout calculations)
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the empirical formula if you have 88.80% copper and 11.20% oxygen?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the empirical formula of the following molecular formula: C3H6
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