Answer
The hydronium concentration of this rain is:
$[H_3O^+] = 0.03M$
Work Step by Step
$[H_3O^+] = 10^{-pH}$
$[H_3O^+] = 10^{- 1.5}$
$[H_3O^+] = 3 \times 10^{- 2}M$
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