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Bounty	Status	Category	Sub-Category	Question	Due
$1.00	Closed, closed	Chemistry	Inorganic Chemistry	half-reactions the following reaction occurs spontaneously 2H+(aq) + Ca(s) Ca2+(aq)+H2(g) write the balanced reduction half-reaction	Apr. 14, 2009
$1.00	Closed, closed	Chemistry	Inorganic Chemistry	balance reduction how do you calculate the balance reduction half-reaction of a spontaneous reaction	Apr. 14, 2009
$2.00	Closed, closed	Chemistry	General Chemistry	Titration A 50 ml sample of 0.0240M NH3 (aq) is titrated with aqueous hydrochloric acid. What is the pH after the addition of 15.0 ml of 0.0600 M HCl (aq): (Kb of NH3 = 1.8 x 10 raised to the 5th power.	Apr. 11, 2009