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90. mL NaOH, remember there are two sig figs in this problem not one, hence the decimal point after the 90.

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12y ago
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11y ago

35 mL

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Anonymous

Lvl 1
4y ago

38.5*0.15 = 5.775 mol

5.775 / 3 = 1.925 mol

1.925/ 15.0 = 0.128 M

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Q: How many ml of 0.10 m naoh solution are needed to neutralize 15 ml of 0.20 m h3po4 solution?
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