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jasenka [17]
4 years ago
8

I give brainliest help pls

Chemistry
2 answers:
ivann1987 [24]4 years ago
4 0
I believe the answer is a compound because compounds can be separated when put together while mixtures can not.
skelet666 [1.2K]4 years ago
4 0

The answer is a compound.

Hope this helps! :)

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Consider the reaction represented by the equation?2SO2(g) + O2(g) 2SO3(g).?For the system at chemical equilibrium, which of the
rewona [7]

Answer:

b. The amount of SO3(g) decreases and the value for K increases.

Explanation:

Hello,

In this case, for the given reaction:

2SO_2(g) + O_2(g)\rightleftharpoons  2SO_3(g)

The change in the stoichiometric coefficient is:

\Delta \nu=2-2-1=-1

In such a way, since the reagents have more moles than the products, based on Le Chatelier's principle, if the volume is increased, the side with more moles is favored. In addition, since the formation of reagent is favored, K is diminished based on the law of mass action shown below:

K=\frac{[SO_3]_{eq}^2}{[SO_2]_{eq}^2[O_2]_{eq}}

Therefore the answer is:

b. The amount of SO3(g) decreases and the value for K increases.

Best regards.

3 0
4 years ago
A plant dying after being exposed to poison represents a physical change. (2 points)
Anna35 [415]

False

Explanation:

A plant will die after being exposed to poison does not represent a physical change. A physical change is one that alters the physical state of matter and leads to no formation of new substances.

  • The plant dies due to chemical changes in its structure.
  • The poison will react with the chemicals in the system of the plant to produce new harmful ones.
  • In a chemical change, new kind of substance forms in the plant and the change is irreversible.

Learn more:

Chemical change brainly.com/question/9388643

#learnwithBrainly

8 0
3 years ago
Read 2 more answers
A particular beer is 65.0% ethanol by volume . If a single bottle of beer contains a total of 750.0 mL of beer, what volume, in
Oksi-84 [34.3K]

The volume in mL of ethanol (C₂H₆O) present in the bottle is 487.5L

HOW TO CALCULATE VOLUME OF ETHANOL:

  • According to this question, a particular beer is 65.0% ethanol by volume. This means that the beer contains 65/100 of ethanol.

  • If a single bottle of beer contains a total of 750.0 mL of beer, the volume of ethanol in the bottle is calculated as follows:

  • = 65/100 × 750

  • = 65 × 7.5

  • = 487.5mL

  • Therefore, volume in mL of ethanol (C₂H₆O) present in the bottle is 487.5L

Learn more at: brainly.com/question/8725232?referrer=searchResults

6 0
2 years ago
the use of logic making empirical observations and preforming dissections were all part of the scientific studies by
olga55 [171]

The answer is: Aristotle.

Aristotle (384–322 BC) was an ancient Greek philosopher.

He was interested in empirical studies and shifted from Platonism to empiricism.

Empiricism is a theory that states that knowledge comes from sensory experience and through experiments.

Empirical evidence is the information received by observation through experimentation.

3 0
3 years ago
What number of cations is present in 1.17g of sodium chloride ?
taurus [48]

Answer:

1.2 × 10^22 atoms.

Explanation:

Firstly, cations refers to the positively charged atom in the ionic compound, which is Na+.

Given the mass of NaCl as 1.17g, the number of moles of NaCl can be calculated this:

Molar mass of NaCl = 23 + 35.5

= 58.5g/mol

Mole = mass/molar mass

Mole = 1.17/58.5

Mole = 0.02moles

Using Avagadro's number, 6.022 × 10^23 atoms of Na+ are in 1 mole of NaCl.

In 0.02 moles of NaCl, there are 0.02 × 6.022 × 10^23 of Na+

0.1204 × 10^23 atoms

1.2 × 10^22 atoms of Na+ (cation)

5 0
3 years ago
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