Use principles of atomic structure to answer each of the following: (a) The radius of the Ca atom is 197 pm; the radius of the Ca2+  ion is 99 pm. Account for the difference. (b) The lattice energy of CaO(s) is –3460 kJ/mol; the lattice energy of K2O is –2240 kJ/mol. Account for the difference. (c) Given these ionization values, explain the difference between Ca and K with regard to their first and second ionization energies. Element First Ionization Energy (kJ/mol) Second Ionization Energy (kJ/mol) K 419 3050 Ca 590 1140 (d) The first ionization energy of Mg is 738 kJ/mol and that of Al is 578 kJ/mol. Account for this difference. This is a four part question. To receive full credit you must address each part.

Using the bond energies in Table 7.2, determine the approximate enthalpy change for the following reaction:              2C2H6(g) + 7O2(g) –> 4CO2(g) + 6H2O(g)

What is the elimination half life of amiodarone?

What is the main function of the IABP?

Which drug antagonizes/reverses Midazolam (Versed)?

Which of the following is the 1,4-addition product in the reaction shown below?     

Which of the following carbon-hydrogen bonds exhibits the lowest wavenumber for a C—H stretch in infrared spectroscopy?   

Which molecule below has two significant bands (medium and broad) in the 3300 – 3500 cm-1 range of its IR spectrum?  

How many peaks appear in the proton spin decoupled (no proton signals) 13C NMR spectrum of the compound below?   

Preload is most impacted by _________.