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Mole JeopardyMoles and
GramsAvagadro! Percent
CompositionEmpirical Formula
Molecular Formula
10 10 10 10 10
20 20 20 20 20
30 30 30 30 30
40 40 40 40 40
50 50 50 50 50
When you see “g” ina conversion factor, you
should do what?
Category 1 – 10 points
The molar mass is the massof 1 ______ of atoms.
Category 1 – 20 points
What tool do we need to use to findmolar mass?
Category 1 – 30 points
What is the mass of 3.5 moles of NaOH?
Category 1 – 40 points
How many moles of NaCl are in 34.2 g of NaCl?
Category 1 – 50 points
A mole of substance containshow many particles?
Category 2 – 10 points
When writing conversion factors,what number always pairs with
mol?
Category 2 – 20 points
Just as 12 eggs = a dozen,__________ representative particles = a mole
Category 2 – 30 points
How many moles of magnesium is 1.25 X 1023
atoms of magnesium??
Category 2 – 40 points
Convert 32.1 g CH4 to molecules.
Category 2 – 50 points
To calculate % composition, we use what equation?
mass of _________% Composition = ------------------------
mass of _________
Category 3 – 10 points
What is the first thing you have to dowhen given a % composition problem?
Category 3 – 20 points
Find the % composition ofC3H8.
Category 3 – 30 points
What is the percent of nitrogen in NH3?
Category 3 – 40 points
What is the percent of sodiumin NaCl?
Category 3 – 50 points
An empirical formula gives the lowest______ - ______ ratio of elements in a compound.
Category 4 – 10 points
In empirical formula problems, youwill be given masses of elements. The
first thing you should do is what?
Category 4 – 20 points
The 2nd step in an empirical problemis to do what?
Category 4 – 30 points
Find the empirical formula. A compound contains
9.31g of Ag and 0.69g of O.
Category 4 – 40 points
A compound contains 25.9% N and 74.1% O.
Find the empirical formula.
Category 4 – 50 points
Can a molecular formula and an empirical formula
be the same?
Category 5 – 10 points
TRUE OR FALSESeveral compounds can have the same
empirical formula, but different molecular formulas.
Category 5 – 20 points
TRUE OR FALSEThe empirical formula could be
triple the molecular formula.
Category 5 – 30 points
Find the molecular formula of…A compound with an empirical formula
of C2H8N and a molar mass of 46 grams per mole.
Category 5 – 40 points
Find the molecular formula of…A compound with an empirical formula
of CFBrO and a molar mass of 254.7 grams per mole.
Category 5 – 50 points
