Compositional Stoichiometry Review
Flashcard
•
Chemistry
•
10th - 11th Grade
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
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12 questions
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1.
FLASHCARD QUESTION
Front
What is the empirical formula of a compound containing 18.8% Na, 29.0% Cl, and 52.5% O by mass?
Back
NaClO4
2.
FLASHCARD QUESTION
Front
How do you calculate the number of moles from the number of atoms?
Back
Number of moles = Number of atoms / Avogadro's number (6.022 x 10^23)
3.
FLASHCARD QUESTION
Front
How many moles are in 4.8 x 10^25 atoms of tungsten (W)?
Back
8.0 x 10^1 mol W
4.
FLASHCARD QUESTION
Front
What is the molar mass of SO2?
Back
64 g/mol (32 g/mol for S + 2 x 16 g/mol for O)
5.
FLASHCARD QUESTION
Front
What is the total mass in grams of 0.75 mole of SO2?
Back
48 g
6.
FLASHCARD QUESTION
Front
What is the relationship between mass and moles?
Back
Mass (g) = Moles x Molar Mass (g/mol)
7.
FLASHCARD QUESTION
Front
Which mass contains 6.0 x 10^23 particles?
Back
28 g of silicon
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