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Pavlova-9 [17]
3 years ago
5

Which statement best explains the octect rule?​

Chemistry
1 answer:
balu736 [363]3 years ago
6 0

what are your choices

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The change in entropy, Δ????∘rxn , is related to the the change in the number of moles of gas molecules, Δ????gas . Determine th
Georgia [21]

Answer:

A. ΔS°rxn decreases

B. ΔS°rxn decreases

C. ΔS°rxn has little or no change

D. ΔS°rxn increases

Explanation:

The change in entropy (ΔS°rxn) is related to the change in the number of moles of gases (Δn(gas) = n(gas products) - n(gas reactants)). If the number of moles of gases increases, there are more possible microstates and entropy increases. The opposite happens when there are less gaseous moles. And little or no change in entropy is expected when the number of moles of reactants and products is the same.

<em>A. K(s) + O₂(g) ⟶ KO₂(s)</em>

Δn(gas) = 0 - 1 = -1

ΔS°rxn decreases

<em>B. CO(g)+ 3 H₂(g) ⟶ CH₄(g) + H₂O(g)</em>

Δn(gas) = 2 - 4 = -2

ΔS°rxn decreases

<em>C. CH₄(g) + 2 O₂(g) ⟶ CO₂(g)+ 2 H₂O(g)</em>

Δn(gas) = 3  - 3 = 0

ΔS°rxn has little or no change

D. N₂O₄(g) ⟶ 2 NO(g) + O₂(g)

Δn(gas) = 3 - 1 = 2

ΔS°rxn increases

3 0
3 years ago
A block of aluminum occupies a volume of 0.015 L and has a mass of 40.5 g. What is its density
yan [13]

Answer:

<h2>Density = 2700 g/L</h2>

Explanation:

Density of a substance can be found by using the formula

Density =  \frac{mass}{volume}

From the question

volume = 0.015 L

mass = 40.5 g

Substitute the values into the above formula and solve for the Density

That's

Density =  \frac{40.5}{0.015}

We have the final answer as

Density = 2700 g/L

Hope this helps you

7 0
3 years ago
If a sample contains 100.0 g of lead atoms (Pb), how many atoms are present in the sample?
Igoryamba

Answer:

The answer to your question is the letter C. 2.906 x 10²³ atoms

Explanation:

Data

mass of Lead = 100 g

The Number of atoms = ?

Process

1.- Look for the atomic number of Lead in the periodic table

Atomic number = 207.2 g

2.- Use proportions and the Avogadro's number to calculate the number of atoms.

                      207.2 g ------------------ 6.023 x 10²³ atoms

                       100 g    -----------------   x

                       x = (100 x 6.023 x 10²³) / 207.2

                       x = 6.025 x 10²⁵ / 207.2

                      x = 2.906 x 10²³ atoms

7 0
3 years ago
Read 2 more answers
Ano ang mga kulturang pilipino?​
oksian1 [2.3K]

Answer:

<h3>Filipinos value traditions and culture</h3>

For Filipinos, traditions in their home and in their family are important. They usually set aside a specific day for a certain celebration like festivals, birthday parties, reunions, etc. And of course, every gathering is dedicated to keeping up with each other over sumptuous food.

<h2 /><h2>Filipino love to party</h2>

Yes, Filipinos love to hold celebrations and fiestas. Bacolod has its MassKara Festival, Davao has its Kadayawan Festival, and Marinduque has its Moriones Festival.

<h3 /><h3>Filipinos have the longest Christmas celebrations—ever</h3>

Even as early as August, you can hear Christmas songs and jingles being played in the malls or in the restaurants in the Philippines. The mood becomes festive, with many people shopping and in good spirits. Christmas celebrations last until around the first or second week of January.

<h3>Filipinos take pride in their families</h3>

In the Philippines, it is family first. So whether you are part of the immediate family or you belong to the third or fourth generation, you are treated as a family member. Sometimes, even the closest of friends are considered family, too.

<h3>Filipinos love art and architecture</h3>

Just look at the massive and tall buildings everywhere. Filipinos have a penchant for bringing art and architecture to a whole new level. They love to design creatively, to think intuitively, and have a passion for anything different and unique.

<h3>Filipino love sports</h3>

Filipino people is the number one in Asia that love boxing.

And filipino have own Martail Arts, like Kali and Arnis.

And many filipino play basket ball every day.

Filipino are strong people and i like that.

I hope it help

<h2>#CarryOnLearning USA</h2>
6 0
3 years ago
In the following diagram the counter clockwise torque is?
Alina [70]
80Nm I'm pretty sure this is the answer if I'm wrong I'm sorry but I'm positive it the answer
4 0
4 years ago
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