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Kaylis [27]
3 years ago
10

A 59.0 mL portion of a 1.80 M solution is diluted to a total volume of 258 mL. A 129 mL portion of that solution is diluted by a

dding 183 mL of water. What is the final concentration
Chemistry
1 answer:
julia-pushkina [17]3 years ago
4 0

Answer:

0.170 M

Explanation:

As this is a <em>series of dilutions</em>, we can continuosly<em> use the C₁V₁=C₂V₂ formula </em>to solve this problem:

For the first step:

  • 59.0 mL * 1.80 M = 258 mL * C₂
  • C₂ = 0.412 M

Then for when 129 mL of that 0.412 M are diluted by adding 183 mL of water:

  • V₂ = 129 mL + 183 mL = 312 mL

Using <em>C₁V₁=C₂V₂:</em>

  • 129 mL * 0.412 M = 312 mL * C₂
  • C₂ = 0.170 M
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