
Mole conversions/counting atoms flashcardizz
Flashcard
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a mole in chemistry?
Back
A mole is a unit of measurement used to express the amount of a substance. It is defined as the amount of substance that contains as many entities (atoms, molecules, etc.) as there are in 12 grams of carbon-12.
2.
FLASHCARD QUESTION
Front
How do you calculate the molar mass of a compound?
Back
To calculate the molar mass, sum the atomic masses of all the atoms in the compound's formula, using the periodic table.
3.
FLASHCARD QUESTION
Front
What is Avogadro's number?
Back
Avogadro's number is 6.022 x 10^23, which is the number of atoms, molecules, or particles in one mole of a substance.
4.
FLASHCARD QUESTION
Front
How many atoms are in one mole of any element?
Back
One mole of any element contains Avogadro's number of atoms, which is 6.022 x 10^23.
5.
FLASHCARD QUESTION
Front
What is the formula to convert grams to moles?
Back
The formula is: Moles = Mass (g) / Molar Mass (g/mol).
6.
FLASHCARD QUESTION
Front
What is the sea of electrons model?
Back
The sea of electrons model describes metallic bonding, where electrons are delocalized and free to move around, allowing metals to conduct electricity.
7.
FLASHCARD QUESTION
Front
How many oxygen atoms are in Mg(NO3)2?
Back
There are 6 oxygen atoms in Mg(NO3)2.
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