How many moles are in
(1) 8g of helium
(2)78g of zinc
(3)11.2 of oxygen gas at s. t.p.

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.

__can be defined as which velocity changes

Convert .347 kilometers to miles show your work