15. Enthalpy (ΔH) is:
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7. Ionic bonds:
7. Ionic bonds:
64. What is the cell potential for a galvanic cell where E°(…
64. What is the cell potential for a galvanic cell where E°(cathode) = +0.80 V and E°(anode) = +0.34 V?
37. How many milliliters of 0.50 M HCl are required to neutr…
37. How many milliliters of 0.50 M HCl are required to neutralize 25.0 mL of 1.0 M NaOH?
32. A gas occupies 4.0 L at 1.0 atm. If pressure increases t…
32. A gas occupies 4.0 L at 1.0 atm. If pressure increases to 2.0 atm at constant temperature, what is the new volume?
54. What is the wavelength of light emitted when an electron…
54. What is the wavelength of light emitted when an electron in hydrogen falls from n = 3 to n = 2? (Rydberg constant R = 1.097×10⁷ m⁻¹)
10. The difference between empirical and molecular formulas…
10. The difference between empirical and molecular formulas is:
31. What is the molarity of a solution prepared by dissolvin…
31. What is the molarity of a solution prepared by dissolving 58.5 g of NaCl (molar mass = 58.5 g/mol) in 2.0 L of water?
4. Significant figures are important because:
4. Significant figures are important because:
17. Electron configurations indicate:
17. Electron configurations indicate: