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Anna71 [15]
3 years ago
10

You make a salt water solution by dissolving salt in water. In order to separate the salt back out of the solution, what should

you do? A. It cannot be separated. B. Separate it with evaporation. C. Separate it with a filter. D. Separate it with a Buchner funnel.
Chemistry
2 answers:
lozanna [386]3 years ago
7 0
B - as it’s the fastest and most practical
lana66690 [7]3 years ago
4 0
B. Separate it with evaporation
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Explanation:

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What is semipermeable membrane?
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How many amino acids are considered scientist to be “essential
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3 0
3 years ago
If 20.0 mL of glacial acetic acid (pure HC2H3O2HC2H3O2) is diluted to 1.70 L with water, what is the pH of the resulting solutio
Andreas93 [3]

Answer:

The answer to your question is pH = 0.686

Explanation:

Data

Acetic acid = 20 ml

Final volume = 1.7 L

pH = ?

density = 1.05 g/ml

Process

1.- Calculate the mass of acetic acid

density = mass / volume

mass = density x volume

mass = 1.05 x 20

mass = 21 g

2.- Calculate the moles of acetic acid (CH₃COOH)

Molar mass = (12 x 2) + (16 x 2) + (4 x 1)

                   = 24 + 32 + 4

                   = 60 g

                 60 g of acetic acid ---------------- 1 mol

                 21 g of acetic acid ----------------- x

                 x = (21 x 1) / 60

                 x = 0.35 moles

3.- Calculate the concentration

Molarity = 0.35 moles / 1.70 L

              = 0.206

4.- Calculate the pH

pH = -log[0.206]

pH = 0.686

6 0
3 years ago
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