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9. If a compound’s empirical formula is CH₂O and its molar m…

9. If a compound’s empirical formula is CH₂O and its molar mass is 180 g/mol, what is its molecular formula?

Published November 5, 2025
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12. How many moles of Na⁺ are in 2.00 L of 1.50 M Na₂SO₄ sol…

12. How many moles of Na⁺ are in 2.00 L of 1.50 M Na₂SO₄ solution?

Published November 5, 2025
Categorized as Uncategorized

6. What is the molar mass of glucose (C₆H₁₂O₆)?

6. What is the molar mass of glucose (C₆H₁₂O₆)?

Published November 5, 2025
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12. How many grams of NH₃ can be produced from 2.0 mol N₂ an…

12. How many grams of NH₃ can be produced from 2.0 mol N₂ and excess H₂ in: N₂ + 3H₂ → 2NH₃?

Published November 5, 2025
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14. How much heat is absorbed when 25.0 g ice melts at 0°C?…

14. How much heat is absorbed when 25.0 g ice melts at 0°C? ΔHfus = 6.02 kJ/mol

Published November 5, 2025
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1. What does excess reagent mean?

1. What does excess reagent mean?

Published November 5, 2025
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3. Why is bond energy important in thermochemistry?

3. Why is bond energy important in thermochemistry?

Published November 5, 2025
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14. How many moles of CO₂ are formed from 25.0 g CaCO₃ decom…

14. How many moles of CO₂ are formed from 25.0 g CaCO₃ decomposed? CaCO₃ → CaO + CO₂

Published November 5, 2025
Categorized as Uncategorized

Which group contains the most reactive nonmetals?

Which group contains the most reactive nonmetals?

Published November 5, 2025
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Which has larger radius: Cl or Cl⁻?

Which has larger radius: Cl or Cl⁻?

Published November 5, 2025
Categorized as Uncategorized

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