In 1901, the average American could expect to live to be about 78 years old.

Compared to normal levels, a shift in the HbO2 curve to the right has which of the following ef-fects?

1. The affinity of Hb for O2 decreases. 2. The Hb saturation for a given PO2 falls. 3. The Hb saturation for a given PO2 rises. a. 1 only b. 1 and 2 only c. 2 and 3 only d. 1, 2, and 3

How is the gram-equivalent (gEq) weight of a substance computed?

a. Dividing its gram atomic weight by its va-lence b. Dividing its valence by its gram atomic weight c. Multiplying its atomic number times its atomic weight d. Multiplying its gram atomic weight times its valence