# chemistry/stiochiometry

can someone explain to me how to find the concentration of a liquid

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1. i meant of an acid

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2. It depends on what you know, and what measure of concentration (there are dozens).

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bobpursley
3. if you know the mL of the acid and the molarity and mL <milliliters> of the base

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4. ss

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5. it depends on what base, and what acid. YOu are dealing with concentraion in Normality. Read about that in your text.

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bobpursley
6. please read the second oops i messed way up on my name bob

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7. HNO3 is the acid nitric acid magnesium hydroxide is the bace MgOH-

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8. do you want me to write the question

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9. are you still there bob or are you thinking

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10. Balance the equation. THis is a good first step in all reactions.

2HNO3 + Mg(OH)2>>Mg(NO3)2 + 2H2O

Now, if the acid is exaclty neutralized by half the moles of magnesium hydroxide.

So moles of acid used= concentration*volume=molarityacid*Va

Ma*Va=1/2 Mb*Vb and I assume you know the volumes of acid, and bas, and the molarity of the base.

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bobpursley
11. does it make a difference if the base was titrated because i forgot to mention that

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12. the acid is titrated against the base i might have said that wrong last time

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13. thanks for your help if their isn't a difference i should be able to figure it out

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