**Answer:**

the correct option is B

**Explanation:**

The correct option is b, since if we reach pH 7, it means that the acid-base reaction is neutralized, therefore the base has been neutralized by an acid or vice versa, without taking into account the proteins or the amounts of both components .

Given the data from the question, the **final temperature** is **200 K,** while **pressure** remains **constant**.

<h3>Basic concepts </h3>

To obtain the **correct answer** to the question, we shall consider two conditions:

- Case 1 (temperature is constant)
- Case 2 (pressure is constant)

<h3>Case 1 (Temperature is constant) </h3>

We shall determine the new pressure by using the combined gas equation (**P₁V₁ / T₁ = P₂V₂ / T₂**) as illustrated below:

- Initial volume (V₁) = 3 L
- Initial pressure (P₁) = 1 atm
- Temperature = constant
- New Volume (V₂) = 2 L
**New pressure (P₂) =? **

P₁V₁ / T₁ = P₂V₂ / T₂

Since temperature is constant, we have:

P₁V₁ = P₂V₂

3 × 1 = P₂ × 2

3 = P₂ × 2

Divide both side by 2

P₂ = 3 / 2

**P₂ = 1.5 atm**

<h3>Case 2 ( pressure is constant) </h3>

We shall determine the new temperature by using the combined gas equation (**P₁V₁ / T₁ = P₂V₂ / T₂**) as illustrated below:

- Initial volume (V₁) = 3 L
- Initial pressure (T₁) = 300 K
- Pressure = constant
- New Volume (V₂) = 2 L
**New pressure (T₂) =? **

P₁V₁ / T₁ = P₂V₂ / T₂

Since pressure is constant, we have:

V₁ / T₁ = V₂ / T₂

3 / 300 = 2 / T₂

1 / 100 = 2 / T₂

Cross multiply

T₂ = 100 × 2

**T₂ = 200 K**

**SUMMARY**

- when the
**temperature is constant**, the **new** **pressure** is **1.5 atm** - When the
**pressure is constant**, the **new temperature** is **200 K**

From the **calculations** made above, we can conclude that the correct answer is:

The **final temperature is 200 K**, while **pressure** remains **constant**.

Learn more about **gas laws:**

brainly.com/question/6844441

I will walk through different captions if one I say isn’t correct.

1) As the humans impact the environment, there will be consequences such as global warming. 2) When the long-term consequences has come, human life would become more difficult and complicated.

3) If the himan life hasn’t taken care of the global, it wouldn’t be safe and consequences would attracted by this cause. (As said above.)

Thank you!

The answer

the speed of <span>the train traveling in kilometers per minute can be found by using the following method:

v = </span><span>30 miles per hour

</span><span>1 mile = 1.6 kilometers

just do the calculus by changing miles to kilometers

</span>1 mile = 1.6 kilometers, so 30 miles= 1.6 km x 30 = 48 km

so the speed of the train is

v=30 miles / hour = 48km / h = 48km / 60 mn = 0.8 km/ mn

the answer is

<span>C- 0.8 km/min</span>

**Answer:**

See explanation

**Explanation:**

Electron affinity is the energy released when an extra electron is added to a neutral gaseous atom. A negative value of electron affinity indicates that energy is given out and vice versa.

Metals have positive electron affinity since electrons rarely accept electrons, so;

Na(g)+ 1e^- → Na^-(g) positive

Mg(g)+1e^- → Mg^-(g) positive

For the last case; Br(g)+ 1e^- → Br^-(g), the electron affinity for the non-metals is negative. hence the answer