Write the structure of the major organic product isolated from the reaction of 3-hexyne with a. hydrogen (2 mol), platinum b. hydrogen (1 mol), lindlar palladium c. lithium in liquid ammonia d. hydrogen chloride (1 mol) e. hydrogen chloride (2 mol) f. chlorine (1 mol) g. chlorine (2 mol) h. aqueous sulfuric acid, mercury (ii) sulfate i. ozone followed by hydrolysis

A+b→2c when the reaction begins, the researcher records that the rate of reaction is such that 1 mole of a is consumed per minute. after making changes to the reaction, the researcher notes that 2 moles of a are consumed per minute. what change could the researcher have made to effect this change?

Explain what happens at the saturation point when adding salt to water at room temperature.

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.