Questions and Answers
How many moles are equal to 1.24x10^24 atoms of sulfur?
1.99 mol
How many atoms are equal to 1.5 moles of helium?
9.03x10^23 atoms
How many moles are equal to 4.15x10^23 molecules of carbon monoxide?
.69 mol
How many molecules are equal to 2.25 moles of sulfur dioxide?
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How many moles are equal to 2.4x10^23 formula units of sodium chloride?
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How many formula units are equal to 1.8 moles of magnesium iodide?
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How many moles are equal to 3.67x10^23 formula units of potassium permanganate?
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How many molecules of carbon tetrachloride are equal to 0.25 moles?
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How many moles are equal to 1.3x10^24 atoms of aluminum?
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How many molecules are equal to 3.52 moles of oxygen difluoride?
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Study Notes
Mole Conversions
- Moles measure the amount of substance, related to the number of atoms or molecules using Avogadro's number (6.02 x 10^23).
Calculating Moles from Atoms
- 1.24 x 10^24 atoms of sulfur equals approximately 1.99 moles.
- To calculate moles, divide the number of atoms by Avogadro's number.
Calculating Atoms from Moles
- 1.5 moles of helium correspond to 9.03 x 10^23 atoms.
- Total atoms can be found by multiplying moles by Avogadro's number.
Mole Calculations with Molecules
- 4.15 x 10^23 molecules of carbon monoxide equal about 0.69 moles.
- Use the formula: Moles = Number of molecules / Avogadro's number.
Molecules from Moles
- 2.25 moles of sulfur dioxide yield approximately 1.35 x 10^22 molecules.
- Multiplication of moles by Avogadro's number helps find total molecules.
Sodium Chloride Units
- 2.4 x 10^23 formula units of sodium chloride equate to roughly 0.39 moles.
Magnesium Iodide Calculations
- 1.8 moles of magnesium iodide corresponds to about 1.08 x 10^24 formula units.
Potassium Permanganate Moles
- Approximately 0.61 moles result from 3.67 x 10^23 formula units of potassium permanganate.
Carbon Tetrachloride Molecules
- 0.25 moles of carbon tetrachloride equal approximately 1.505 x 10^23 molecules.
Aluminum Atom Calculations
- 1.3 x 10^24 atoms of aluminum translate to about 2.16 moles.
Oxygen Difluoride Molecule Count
- 3.52 moles of oxygen difluoride yield around 2.12 x 10^24 molecules.
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Test your understanding of chemical quantities with these flashcards focused on mole calculations. Each card presents a different scenario involving atoms and molecules, providing a hands-on way to learn about the mole concept. Perfect for students studying chemistry or preparing for exams.