Practice Why The Mole? From Atoms To Grams (1.1.1) - Unit 1: Stoichiometric Relationships

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6 sample questions

Question 1.
What is Avogadro's constant?
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Think about how many atoms are in a mole.
Question 2.
Why do chemists use the mole?
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Consider the relationship between tiny atoms and larger samples.
3Question 3.
How many particles are in one mole of any substance?
- 6.022 per mole
- 6.022 × 10²³ per mole
- 12.01 per mole
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Think about how many items are in a dozen.
4Question 4.
True or False: The mole is only used for measuring gases.
- True
- False
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Consider all forms of matter.
Question 5.
You have 48 grams of calcium carbonate (CaCO₃). How many moles of CaCO₃ do you have?
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Calculate using the molar mass formula.
Question 6.
In a chemical reaction, if you start with 10 moles of oxygen (O₂), how many grams of oxygen do you have?
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Use the known molar mass for conversion to grams.

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