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3 years ago

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Chemistry

1 answer:

RoseWind [281]3 years ago

8 0

Answer:

32 g

Explanation:

molar masses of elements such as sulfur can be found on the periodic table.

the molar mass listed on the periodic table equals 1 mole of the atom which also equals 6.02×10^23

therefore, 32g = 1 mole of sulfur = 6.02×10^23

(1 mole always equals 6.02×10^23)

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Hydrogen bromide decomposes when heated to 437C according to the equation: 2HBr(g) H2(g) Br2(g). If the reaction starts with 2.1

iren [92.7K]

Answer:

<h3>the equilibrium constant of the decomposition of hydrogen bromide is 0.084</h3>

Explanation:

Amount of HBr dissociated

$2.15 \ mole \times \frac{36.7}{100} \\\\=0.789 \ mole$

2HBr(g) ⇆ H2(g) + Br2(g)

Initial Changes 2.15 0 0 (mol)

- 0.789 + 0.395 + 0.395 (mol)

At equilibrium 1.361 0.395 0.395 (mole)

Concentration 1.361 / 1 0.395 / 1 0.395 / 1

at equilibrium (mole/L)

$K_c=\frac{[H_2][Br_2]}{[HBr]^2} \\\\=\frac{(0.395)(0.395)}{(1.361)^2} \\\\=\frac{0.156025}{1.852321} \\\\=0.084$

<h3>Therefore, the equilibrium constant of the decomposition of hydrogen bromide is 0.084</h3>

6 0

3 years ago

Identify each process numbered 1-6

Vedmedyk [2.9K]

Answer:

1 = Melting

2 = Freezing

3 = Sublimation

4 = Deposition

5 = Condensation

6 = Boiling

Explanation:

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3 years ago

Where are the electrons located in an atom?

aleksandrvk [35]

Answer:

Electrons are found in shells or orbitals that surround the nucleus of an atom

Explanation:

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3 years ago

How many valence electrons does oxygen have?<br> A. 2<br> B. 6<br> C. 8<br> D. 16

AleksandrR [38]

Oxygen has 6 valence electrons, so B

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3 years ago

Complete the following analogy:

Jlenok [28]

The answer to this would be d. Precipitation patterns .

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3 years ago

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