38. What is the normality of a solution containing 49g of of H3PO4 in 2,000 mL, of solution?
(A) 0.25 N
(B) 0.50 N
(C) 0.75 N
(D) 1.00 N
(E) 1.50 N

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統計： A(0), B(1), C(1), D(1), E(0) #2347814