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3 years ago

When 85 L of gas at 1.376 atm has its pressure changed to 0.154 atm, what is the new volume?

Chemistry

1 answer:

igor_vitrenko [27]3 years ago

4 0

Answer:

Explanation:

The new volume can be found by using the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

Since we are finding the new volume

$V_2 = \frac{P_1V_1}{P_2} \\$

From the question we have

$V_2 = \frac{85 \times 1.376}{0.154} = \frac{116.96}{0.154} \\ = 759.480519...$

We have the final answer as

Hope this helps you

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Which of the following halogens is darkest in colour?

Naddik [55]

I₂ is the halogens which is darkest in colour than other.

<h3>What is halogen? </h3>

Halogens are the elements which belongs to group 17. Group 17 elements are known as halogens. They are highly electronegative in nature.

The last electronic configuration is ns2 np5. Since, one electron is less to get stable electronic configuration. Therefore, they accept one electron and get stable electronic configuration.

<h3>Why halogens are dark in colour? </h3>

As we move down the group, the darkness of colour increases. This is due to ionization energy which decreases as we move down the group. This is due to increase in the atomic size and decrease in nuclear form which further make high energy level to absorb lesser light and reflects deepen colour on moving down the group. Due to which they appears dark. Therefore, option A is the correct option.

Thus, we can concluded that I₂ is the halogens which is darkest in colour than other.

learn more about Halogens:

brainly.com/question/11156152

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6 0

2 years ago

If a gas has a volume of 3.20 L at 273 K, what will be its new volume at 373 K?

jarptica [38.1K]

Answer:

Explanation:

Example #1: How many moles of oxygen will occupy a volume of 2.50 L at STP? Standard ... What is the volume of gas at 2.00 atm and 200.0 K if its original volume was ... P2 = 2.00 atm 2.000tm) 273k. T=273k. 200.0k. Tz= 200.0k. V, = 200.0L ... A gas has a pressure of 0.370 atm at 50.0°C. What is the pressure at standard.

3 0

3 years ago

Density of water is affected by (select all that apply)

olga nikolaevna [1]

Density of water is affected by, Temperature of water, and I also think How close the water is to land.
Hope this helped!

7 0

3 years ago

A satellite dish is being designed so that it can pick up radio waves coming from space. The satellite dish will be in the shape

pychu [463]

Answer:

the base of the satellite should be positioned at (0,20)

the best model which describes the equation of the satellite is $\mathbf{y = \dfrac{x^2}{80} + 20}$

Explanation:

From the information given:

A satellite dish is designed in such a way that it can pick up radio waves coming from the space.

This satellite dish is designed in the shape of a parabola.

Location of the satellite is situated above the ground

Focus of the satellite is 40 ft above the ground

Using the ground as the x - axis

The objective here is to determine where should the base of the satellite be positioned? &

Which equation best describes the equation of the satellite?

Using the ground as the x - axis;

Let say the x- axis start from the origin (0,0)

Then;

The Focus of the satellite which is 40 ft above the ground will be (0,40)

The position of the base of the satellite will be the vertex (h,k) which is at an equidistant position between the ground and the focus.

(h,k) = (0,20)

The model which best describes the equation of the satellite is as follows :

$(x - h)^2 = 4a(y - k) \\ \\ where ; \\ \\ (h,k) = (0,20) , \\ a = 20(x - 0)^2 = 4(20)(y - 20)\\ \\x^2 = 80( y - 20)\\ \\x^2= 80y - 1600\\ \\y = \dfrac{x^2}{80} + 20$

4 0

3 years ago

A gas has a volume of 50.0 cm3 at a temperature of -73°C. What volume would the gas occupy at a temperature of -123°C if the pre

GaryK [48]

Answer:

h. 37.5 cm³

Explanation:

We can use the general law of ideal gas: <em>PV = nRT. </em>

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant,

T is the temperature of the gas in K.

If n and P are constant, and have different values of V and T:

V₁ = 50.0 cm³, T₁ = -73°C + 273 = 200 K,

V₂ = ??? cm³, T₂ = -123°C + 273 = 150 K.

∴ V₂ = (V₁T₂)/(T₁) = (50.0 cm³)(150 K)/(200 K) = 37.5 cm³.

<em>So, the right choice is: </em><em>h. 37.5 cm³.</em>

7 0

4 years ago