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Eduardwww [97]
3 years ago
10

6 Select the correct answer. A substance is followed by the symbol (l) in a chemical equation. What does the symbol represent?

Chemistry
1 answer:
allsm [11]3 years ago
4 0

Answer:

B. The substance is in the liquid state.

Explanation:

The symbol (l)  in a chemical equation represents that the substance is in liquid state which is one of the physical states of a chemical substance.

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6 0
3 years ago
Q: A 25.5 mL aliquot of HCl (aq) of unknown concentration was titrated with 0.113 M NaOH (aq). It took 51.2 mL of the base to re
blondinia [14]
M ( HCl ) = ?

V ( HCl ) = 25.5 mL in liters : 25.5 / 1000 => 0.0255 L

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V ( NaOH ) = 51.2 mL / 1000 => 0.0512 L

number of moles NaOH:

n = M x V

n = 0.113 x <span> 0.0512 => 0.0057856 moles of NaOH

mole ratio:

</span><span>HCl + NaOH = NaCl + H2O
</span><span>
1 mole HCl -------------- 1 mole NaOH
( moles HCl ) ----------- </span><span> 0.0057856 moles NaOH
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(moles HCl ) = <span> 0.0057856 x 1 / 1
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= <span> 0.0057856 moles of HCl
</span>
M ( HCl ) = n / V

M =  0.0057856 / <span>0.0255
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= 0.227 M

Answer A

hope this helps!

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