Define these 3 terms in your own words AND when they are used in solving stoichiometry problems (For example: when do you need the molar mass of a substance in a stoichiometry calculation? That’s how you want to describe when these 3 terms are used.) : Mole, Molar Mass & Mole ratio. Answer in at least 2-3 complete sentences for each term. You can reference Moles and Stoichiometry in chapters 10 and 12 of your textbook.

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.