6. the half life for uranium-235 is 7.0x108 years.
a. how many half-lives did the sample go through at the end of 2.8x109 years?

If a 12-v battery is connected to a circuit that has a current of 3.0 a, what is the total resistance in the circuit? 36 ohms 4 ohms 0.25 ohms

Kp is the equilibrium constant for dissociation of the propionic acid dimer. what is the sign of the slope for a plot of the natural logarithm of kp vs. inverse temperature for this reaction?

Which activity is an innate behavior