How many grams of sodium chloride are present in a 0.75 m solution with a volume of 500.0 milliliters?

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.

What are the first three quantum numbers for the electrons located in subshell 2s?

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?