The amount of 
Ar is one-ninth the amount of 
K. If the half-life of the latter is T, what is the rock’s age?
A. T
B. T/9
C. 9T
D. ln(9T)
E. T/ln 9
F. Some other result (specify)
A. T
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If a reaction is exothermic and produces large quantities of heat reaching equilibrium, its equilibrium constant will be
A) negative, because it is an exothermic reaction. B) zero, because the reaction will not have an equilibrium constant. C) small (less than. D) large.
Answer the following statement(s) true (T) or false (F)
1. Equation 
implies that a sinusoidal wave’s phase speed depends on its wavelength
Order the interior layers of the Sun from hottest to coldest.
A) radiation zone, core, convection zone, photosphere B) core, radiation zone, convection zone, photosphere C) photosphere, convection zone, radiation zone, core D) photosphere, convection zone, core, radiation zone
Nickel and silver have lattice parameters of 0.352 nm and 0.408 nm, respectively; an electronegativity of 1.8 for each, an FCC structure, and a similar valence. Should they be able to form a continuous-solid solution? _____________
Fill in the blank(s) with the appropriate word(s).