Test%20#1%20A%20%28white%29%20answers

Test%20#1%20A%20%28white%29%20answers - 1 The decay rate or...

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The decay rate or activity of a radioactive isotope is proportional to which of the following? a. Half-life of the isotope b. The mass of the isotope c. The charge of the isotope d. The number of radioactive nuclei present 2. In a solution of KI (potassium iodide) and water what is the strongest intermolecular force? a. London dispersion forces b. Ion-dipole interactions c. Ion- induced dipole interactions d. Dipole-dipole interactions 3. Water boils at 100 C at 760 torr. If the value of ΔH vap for water is 40.7 kJ / mol, at what temperature would water boil at the Dead Sea in Jordan (-1387 ft below sea level and 800 torr)? a. 110 C b. 106 C c. 102 C d. 100 C 4. If a compound has a vapor pressure of 315 mm Hg at 42 C, which one of the following sets of data is TRUE? a. The vapor pressure decreases at 53 C and ΔH vap is negative. b. The vapor pressure increases at 53 C and ΔH vap is negative. c.
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Test%20#1%20A%20%28white%29%20answers - 1 The decay rate or...

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