spectrum is formed when atoms or molecules are de-excited from higher energy level to lower energy level. a Absorption b Emission C Band d None of the above

Calculate the expected ph values of the buffer systems from the experiments (a, b,c, d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

Complete the following statements to describe solids, liquids, and gases. select the correct answer from each drop-down menu. a solid a definite volume and a definite shape. a liquid a definite volume and a definite shape. a gas a definite volume and a definite shape