Changes in the frequency of a sound wave is called pitch. low frequency creates a ( pitch, while high frequency creates a ( pitch.

(1) high

(2) low

(1) low

(2) high

(1) loud

(2) quiet

(1) quiet

(2) loud

Two solutions of the same uv-absorbing molecule were analyzed by uv-vis spectroscopy on the same instrument using 1 cm pathlength cells. use data from the table to calculate by what percentage the concentration of solution b is compared to that of solution a.sample absorbance at 315nm a 0.45 b 0.80