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Natali [406]
3 years ago
8

How can you tell if something is a mixture of a pure substance

Chemistry
1 answer:
Alenkasestr [34]3 years ago
4 0

Matter can be broken down into two categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components. A chemical substance is composed of one type of atom or molecule.

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Why do historians analyze historical events and cause and effect relationship
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Recognizing patterns of cause and effect is an important analytical skill that allows historians to explain why things happened the way they did in the past. It's also a strategy that can make it possible to predict what may happen in the future.
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3 years ago
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1.00 mL of a 250.0 µM solution of KCl is diluted to 50.0 mL. What is concentration of this solution?
Sever21 [200]

Answer:

5.00 µM

Explanation:

Given data

  • Initial concentration (C₁): 250.0 µM
  • Initial volume (V₁): 1.00 mL
  • Final concentration (C₂): ?
  • Final volume (V₂): 50.0 mL

We can find the final concentration using the dilution rule.

C₁ × V₁ = C₂ × V₂

C₂ = C₁ × V₁ / V₂

C₂ = 250.0 µM × 1.00 mL / 50.0 mL

C₂ = 5.00 µM

The concentration of the diluted solution is 5.00 µM.

3 0
3 years ago
12. An electrolysis reaction is
tia_tia [17]

Answer: D.) non-spontaneous.

Explanation:

6 0
2 years ago
Write the chemical formula of the following:
Elan Coil [88]

Answer:

1.Ca(OH)2

2.Mg(OH)2

3.Al2SO4

4.Na2CO3

5.Zn3(PO4)2

6.LiNO3

7.CuCO3

8. K2CO3

9.MgSO4

10.Ca3(PO4)2

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4. Chlorine exists in two forms - chlorine-35 and
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Answer: sorry i dont knowExplanation:

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