What does the mass on the periodic table represent?
Chemistry Fall Semester Review 2024

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Chemistry
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10th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
The mass represents the atomic mass unit, and average atomic mass is calculated by taking the weighted average of all isotopes.
2.
FLASHCARD QUESTION
Front
How is average atomic mass calculated?
Back
Average atomic mass is calculated by taking the weighted average of all isotopes.
3.
FLASHCARD QUESTION
Front
Which has a greater number of particles: 2.1 mols of Pb or 2.4 mols of Si?
Back
2.4 mols of Si.
4.
FLASHCARD QUESTION
Front
What are the steps to convert from grams of a substance to atoms?
Back
1. Determine the molar mass. 2. Convert grams to moles. 3. Use Avogadro's number to find atoms.
5.
FLASHCARD QUESTION
Front
Define isotope.
Back
An isotope is a variant of a particular chemical element which differs in neutron number.
6.
FLASHCARD QUESTION
Front
What is the empirical formula for C₁₈H₃₄O₁₆?
Back
C₉H₁₇O₈.
7.
FLASHCARD QUESTION
Front
What is the empirical formula for H₄O₂?
Back
HO.
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