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saul85 [17]
3 years ago
14

what additional detail supports the point on view in the chart? 1-it doesn’t make sense to have an “honor system.” 2-someone sho

uld monitor street musicians. 3-street musicians are provincetown. 4-street musicians create a bad impression. i need it QUICK !!!

Chemistry
1 answer:
Katena32 [7]3 years ago
8 0

Answer:

I wanna say 3

Explanation:

Provincetown is known for them so getting rid of them would be a bad thing.

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Calculate the volume in mL of 0.279 M Ca(OH)2 needed to neutralize 24.5 mL of 0.390 M H3PO4 in a titration.
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The volume of the 0.279 M Ca(OH)₂ solution required to neutralize 24.5 mL of 0.390 M H₃PO₄ is 51.4 mL

<h3>Balanced equation </h3>

2H₃PO₄ + 3Ca(OH)₂ —> Ca₃(PO₄)₂ + 6H₂O

From the balanced equation above,

  • The mole ratio of the acid, H₃PO₄ (nA) = 2
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<h3>How to determine the volume of Ca(OH)₂ </h3>
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  • Volume of acid, H₃PO₄ (Va) = 24.5 mL
  • Molarity of base, Ca(OH)₂ (Mb) = 0.279 M
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MaVa / MbVb = nA / nB

(0.39 × 24.5) / (0.279 × Vb) = 2/3

9.555 / (0.279 × Vb) = 2/3

Cross multiply

2 × 0.279 × Vb = 9.555 × 3

0.558 × Vb = 28.665

Divide both side by 0.558

Vb = 28.665 / 0.558

Vb = 51.4 mL

Thus, the volume of the Ca(OH)₂ solution needed is 51.4 mL

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