A buffer solution contains H2CO3 and HCO3–, resulting in the equilibrium shown by the reaction below. According to this reaction and Le Châtelier’s principle, what happens when acid (H3O+) is added to this buffer solution?          H2CO3 + H2O ⇋ HCO3– + H3O+

Low amplitude, mixed frequency activity of ___ to ____ indicates stage 1 sleep.

REM staging ends with:

Sawtooth waves have a frequency of ____ to ___

Stage N3 is defined as:

Stage N2 ends when:

Spindles can exist during Stage N3.

Slow waves are primarily seen in the ________ region, whereas Alpha is seen primarily in _________.

The weights (in pounds) of 30 newborn babies are listed below. Find P45. 4.9  5.8  5.8  5.9  6.1  6.1  6.4  6.4  6.5  6.6 6.7  6.7  6.7  6.9  7.0  7.0  7.0  7.1  7.2  7.2 7.4  7.5  7.7  7.7  7.8  8.0  8.1  8.1  8.3  8.9

The box-and-whisker plot shows the number of pigeons spotted by visitors at the park during the last weekend.