A hydrate is heated to determine the percent water by mass in the hydrate. During the heating of the hydrate a small amount of the hydrate splatters out of the dish onto the lab bench without being noticed. What effect will this have on the calculated value of the percent water by mass?

In all living cells dna controls cellular activities by

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.

Which process describes vaporization that takes place below the surface of a liquid? condensation melting boiling evaporation