What is the first step in determining the empirical formula from percent abundance?

Empirical and Molecular Formulas

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Chemistry
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9th - 12th Grade
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Hard

Patricia Brown
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Convert moles to liters
Convert moles to grams
Convert grams to moles
Convert grams to liters
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you find the molecular formula from the empirical formula?
Multiply the empirical formula by the molar mass of the compound
Divide the empirical formula by the molar mass of the compound
Multiply the empirical formula by the ratio of the compound's molar mass to the empirical formula's molar mass
Divide the empirical formula by the ratio of the compound's molar mass to the empirical formula's molar mass
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula to calculate the volume of a gold bar?
Length + Width + Height
Length x Width x Height
Length x Width + Height
Length + Width x Height
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you convert the mass of gold to the number of atoms?
Convert to moles and then divide by Avogadro's number
Multiply by Avogadro's number
Divide by Avogadro's number
Convert to moles and then multiply by Avogadro's number
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in determining the number of moles of oxygen in a gold oxide compound?
Add the mass of gold and oxygen
Subtract the mass of gold from the total mass of the compound
Divide the mass of gold by the mass of oxygen
Multiply the mass of gold by the mass of oxygen
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you determine the empirical formula of a compound?
By finding the ratio of the number of moles
By finding the ratio of the number of atoms
By finding the ratio of the number of liters
By finding the ratio of the number of grams
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the empirical formula for a compound with a 1:1.5 ratio of elements?
Multiply both by 2 to get a whole number ratio
Multiply both by 1.5 to get a whole number ratio
Multiply both by 3 to get a whole number ratio
Multiply both by 0.5 to get a whole number ratio
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