According to your study unit, what's the payoff that keeps volunteers using their own time to their communities?
a. volunteers often get free lunches, tickets to events, or special t-shirts. b. people realize how well off they are compared to the people they . c. it's so rewarding, people feel emotionally high and fulfilled when they're done.
d. it's a wonderful place to meet people and network for business.

Identify two types of chemical bonding in the source of dietary potassium

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.

In one or two grammatically correct sentences, write a definition for the term molecule geometry