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Juliette [100K]
3 years ago
10

Geometrically tetrahedral means that the electron groups have what angle? A. 120° B. 180° C. 90° D. 109.5°

Chemistry
1 answer:
Dmitry_Shevchenko [17]3 years ago
4 0

Answer:

109.5° (d)

Explanation:

Use the table 10.1 to determine the

1. Electron geometry

2. Molecular geometry

3. Bond angles

-Four electron groups give a tetrahedral electron geometry

- two bonding groups and two lone pair give a bent molecular geometry

- the idealized bond angles for tetrahedral geometry are 109.5°.

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Which pair of elements do you expect to be most similar in their chemical properties?
Dmitry [639]
Isotopes of carbon or any element
7 0
3 years ago
Find δs∘ for the reaction between nitrogen gas and hydrogen gas to form ammonia:12n2(g) 32h2(g)→nh3(g)
Dima020 [189]

Nitrogen (N2) and hydrogen (H2) gases react to form ammonia, which requires -99.4 J/K of standard entropy (ΔS°).

What is standard entropy?

The difference between the total standard entropies of the reaction mixture and the summation of the standard entropies of the outputs is the standard entropy change. Each entropy in the balanced equation needs to be compounded by its coefficient, as shown by the letter "n."

Calculation:

Balancing the given reaction following-

1/2 N₂(g) + 3/2 H₂ (g)→ NH₃ (g)

ΔS° = [1 mol x S° (NH₃)g] - [1/2 mol x S° (N₂)g] - [3/2 mol x S°(H₂)g]

Here S° = standard entropy of the system

Insert into the aforementioned equation all the typical entropy values found in the literature:

ΔS° = [1 mol x 192.45 J/mol.K] - [1/2 mol x 191.61 J/mol.K] - [3/2 mol x 130.684 J/mol.K]

⇒ΔS° = - 99.4 J/K

Therefore, the standard entropy, ΔS° is -99.4 J/K.

Learn more about standard entropy here:

brainly.com/question/14356933

#SPJ4

5 0
1 year ago
Question 10
eduard

Answer:

C. Biodiesel made from plant oil.

Explanation:

The  type of vegetable oil used in production greatly affects the performance of biodiesel in the winter. The less saturated the fat, the better the performance in winter time. Canola oil works very well for low temperature biodiesel, and palm oil is among the worst for cold weather performance.

Hope this helped!!!

5 0
3 years ago
9
marishachu [46]

Answer:

B. as a food preservative in the manufacture of detergents

.........

8 0
3 years ago
An atom with the same number of protons and electrons has charge of
xz_007 [3.2K]

Answer:

Explanation:

0

All the charges of the protons are cancelled out by all the charges on the electrons.

6 0
3 years ago
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