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how many mL of 0.50 M ammonia would be needed to react with 1.0 L of 0.75 M HClO4

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    How many moles HClO4 do you have? M x L = moles.
    How many mols NH3 will that require. Write the equation and you will see 1 mol HClO4 requires just 1 mol NH3; therefore, moles HClO4 = mole NH3.
    Now M NH3 = moles NH3/L NH3. Solve for L and convert to mL.

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