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2 years ago

During an ice age, land can move and specific areas can be permanently changed. true or false

Chemistry

1 answer:

givi [52]2 years ago

5 0

Answer: The given statement is true.

Explanation:

It is known that due to increase in temperature ice melts. Therefore, during ice age there is also melting of ice and solid state of water changes into liquid state of water.

Therefore, this water moves from its initial place and changes its position result in the change of land and specific areas.

Thus, we can conclude that the statement during an ice age, land can move and specific areas can be permanently changed is true.

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Nitrogen forms a surprising number of compounds with oxygen. A number of these, often given the collective symbol NOx (for "nitr

kvv77 [185]

Answer:

9.2

Explanation:

Let's do an equilibrium chart of this reaction:

2NO(g) + O₂(g) ⇄ 2NO₂(g)

4.9 atm 5.1 atm 0 Initial

-2x -x +2x Reacts (stoichiometry is 2:1:2)

4.9-2x 5.1-x 2x Equilibrium

The mole fraction of NO₂ (y) can be calculated by the Raoult's law, that states that the mole fraction is the partial pressure divided by the total pressure:

y = 2x/(4.9 - 2x + 5.1 -x + 2x)

0.52 = 2x/(10 - x)

2x = 5.2 -0.52x

2.52x = 5.2

x = 2.06 atm

Thus, the partial pressure at equilibrium are:

pNO = 4.9 -2*2.06 = 0.78 atm

pO₂ = 5.1 - 2.06 = 3.04 atm

pNO₂ = 2*2.06 = 4.12 atm

Thus, the pressure equilibrium constant Kp is:

Kp = [(pNO₂)²]/[(pNO)²*(pO₂)]

Kp = [(4.12)²]/[(0.78)²*3.04]

Kp = [16.9744]/[1.849536]

Kp = 9.2

4 0

2 years ago

A sample of 1L of gas in a container at-73C has a pressure of 32.2inHg. To

Goryan [66]

Answer:

Like you, like you

Like you, ooh

I found it hard to find someone like you

Like you, like you

Send your location, come through

I can't sleep no more

In my head, we belong

And I can't be without you

Why can't I find no one like you?

I can't sleep no more

In my head, we belong

And I can't be without you

Why can't I find no one like you?

Explanation:

8 0

2 years ago

When a student adds benedict’s solution to a clear solution, the solution turns orange. the student can conclude that the soluti

4vir4ik [10]

Benedict's solution is used to test simple sugars, such as glucose. It is blue solution, when sugar is present, it turns to orange / brick red. Depends on the concentration of sugar.

5 0

2 years ago

Xenon forms several compounds with oxygen and fluorine. It is the most reactive non-radioactive noble gas because a. its large r

muminat

Answer:

d. its effective nuclear charge is lower than the other noble gases.

Explanation:

Xenon belongs to group O on the periodic table. Most of the elements here are unreactive.

Due to the large size of Xenon, the outermost electrons have very low effective nuclear charge. Effective nuclear charge is the effect of the positive charges of the nucleus on the electrons in orbits. This effect decreases outward as atomic shell increases.

Xenon has a very large atomic radius and there is weak a nuclear charge on the outermost electrons. The more electronegative elements would be able to attract some of its outermost electrons easily and form chemical bonds with xenon much more readily.

7 0

2 years ago

Imagine that you are playing a game of Clue in which Mrs. White is killed in the conservatory. You have a device in each room to

myrzilka [38]

Answer:

Mr. Plum killed Mrs. White.

Explanation:

1) Wavelengths for the different light colors (visible light) and related character:

Color Wavelength related character

Violet 380–450 nm ← Professr Plum

Blue 450–485 nm ← Mrs. Peacock

Cyan 485–500 nm

Green 500–565 nm ← Mr. Green

Yellow 565–590 nm ← Colonel Mustard

Orange 590–625 nm

Red 625–740 nm ← Miss Scarlet

2) At the time of the murder, the spectrometers recorded:

a) In the dining room: 520 nm.

520 nm is in the range 500 - 565 nm, which is the range for green color, so Mr. Green was in the dining room and is no more a suspect.

b) In the lounge and study: lower frequencies.

Since frequency and wavelength are inversely related, the wavelengths in the longe and study have to be of yellow and red colors, which are the only two with longer wavelengths from the option given.

Then, Mustard and Scarlet are not criminal.

c) In the library: the second shortest wavelength of the five recorded.

The second shortest wavelength, as per the table, is that of blue color. So, Mrs. Peacock is not the killer.

The only left option is violet, so Mr. Plum is the only who could be at the conservatory and he is the killer.

7 0

2 years ago