A100-gram sample of sodium chloride (nacl) consists of 60.66 g of chlorine and 39.34 g of sodium. what mass of sodium would make up a 150-gram sample of sodium chloride?
89.34 g
39.34 g
59.01 g
64.24 g

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

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.

Find the missing probability in the table below a.0.10 b.40 c.0.80 d. 0.20