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Questions and Answers
What is the relationship between the atomic mass of an element and its molar mass?
The atomic mass of an element in u is equal to its molar mass in grams.
How do we find the molar mass of atoms?
To find the molar mass of atoms, we take the atomic mass in u and change the units to grams.
Explain the concept of gram atomic mass with an example.
Gram atomic mass is the mass of 1 mole of atoms of an element, where the numerical value remains the same but the units change from u to g.
How is the molar mass of a molecule calculated?
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What is the significance of Avogadro's number in chemistry?
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How is the mole defined as a counting unit for chemists?
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What is the definition of the Avogadro constant?
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Define molar mass.
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What is the mole?
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State the law of chemical combination that governs the mass of carbon dioxide formed when carbon is burnt in oxygen.
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What are polyatomic ions?
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Calculate the molar mass of Calcium Carbonate, CaCO3.
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Calculate the number of moles if you have 36 g of water (H2O).
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How many molecules are present in 3 moles of CO2?
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If you have 0.5 moles of sulfur (S8) atoms, what is the mass?
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Calculate the mass of 2.5 moles of ammonia (NH3).
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How many atoms are there in 2.5 moles of magnesium (Mg)?
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What is the number of particles in 0.2 moles of potassium chloride (KCl)?
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