PH AND BUFFER QUESTION PLS HELP A student needs to make a buffer solution with a pH of 5.05 using acetic acid and sodium hydroxide starting with 100.0 mL of 0.37 M acetic acid. Calculate the number of moles of sodium hydroxide that should be added to achieve the desired pH.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as

Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ