At which of the following temperature and pressure levels would a gas be most likely to follow the ideal gas law? A. 0 K and 100 Pa B. 273 K and 1 Pa C. 100 K and 273 Pa D. 273 K and 100 kPa

Answers

Answer 1

The Ideal Gas Law makes a few assumptions from the Kinetic-Molecular Theory. These assumptions make our work much easier but aren't true under all conditions. The assumptions are,

1) Particles of a gas have virtually no volume and are like single points.
2) Particles exhibit no attractions or repulsions between them.
3) Particles are in continuous, random motion.
4) Collisions between particles are elastic, meaning basically that when they collide, they don't lose any energy.
5) The average kinetic energy is the same for all gasses at a given temperature, regardless of the identity of the gas.

It's generally true that gasses are mostly empty space and their particles occupy very little volume. Gasses are usually far enough apart that they exhibit very little attractive or repulsive forces. When energetic, the gas particles are also in fairly continuous motion, and without other forces, the motion is basically random. Collisions absorb very little energy, and the average KE is pretty close.

Most of these assumptions are dependent on having gas particles very spread apart. When is that true? Think about the other gas laws to remember what properties are related to volume.

A gas with a low pressure and a high temperature will be spread out and therefore exhibit ideal properties.

So, in analyzing the four choices given, we look for low P and high T.

A is at absolute zero, which is pretty much impossible, and definitely does not describe a gas. We rule this out immediately.

B and D are at the same temperature (273 K, or 0 °C), but C is at 100 K, or -173 K. This is very cold, so we rule that out.

We move on to comparing the pressures of B and D. Remember, a low pressure means the particles are more spread out. B has P = 1 Pa, but D has 100 kPa. We need the same units to confirm. Based on our metric prefixes, we know that kPa is kilopascals, and is thus 1000 pascals. So, the pressure of D is five orders of magnitude greater! Thus, the answer is B.

Related Questions

Know the characteristics of a solid, liquid, gas, plasma. (Definite shape/ volume?)

Answers

solids-are molecules that are together at all times( unless changed by a liquid or gas)

liquid-are molecules that move around freely in 1 space but can be changed to solid or gas

gas- molecules that move around freely and can be hot or cold depending

plasma- a material that goes to forming a cell or a liquid without any structual particles
There you go!

An object has a kinetic energy of 275 j and a momentum of magnitude 25.0 kg · m/s. find the (a) speed and (b) mass of the object.

Answers

Kinetic energy = momentum^2 / 2 x mass
Mass = (momentum^2/ Kinetic energy) / 2

Mass = (25^2 / 275) / 2
Mass = 1.136 kg.

momentum = mass x velocity

velocity = mass / momentum
velocity = 1.136 / 25
velocity = 0.04544 m/s

Answer: The correct answers are 482.4 m/s and 21.96 kg.

Explanation:

The expression for the kinetic energy in terms of momentum of an object is as follows;

[tex]KE=\frac{p^{2} }{2m}[/tex]

Here, KE is the kinetic energy, p is the momentum and m is the mass of the object.

It is given in the problem that an object has a kinetic energy of 275 j and a momentum of magnitude 25.0 kg · m/s.

Calculate the mass of the object.

[tex]KE=\frac{p^{2} }{2m}[/tex]

Put p=25.0 kg · m/s and KE= 275 J.

[tex]m=\frac{25^{2} }{2(275)}[/tex]

[tex]m=1.14 kg[/tex]

Calculate the speed of the object.

[tex]KE=\frac{1}{2} mv^{2}[/tex]

Put m= 1.14 kg and KE= 275 J.

[tex]v=\sqrt{\frac{2(275)}{1.14} }[/tex]

v=21.96 m/s

Therefore, the speed of the object is 21.96 m/s and the mass of the object is 1.14 kg.

In which labeled portion of the curve would you use the heat of vaporization to calculate the heat absorbed? (image attached inside!)

1, 2, 3, 4, or 5

**not sure :( Thank you!!

Answers

In the labeled portion of the curve ,you use the heat of vaporization to calculate the heat absorbed in the 4th portion. It is indicated in the picture that it is the region where vaporization occurs, that is why you need to consider this portion to calculate.

The answer is 4 but idk how to get it so can somebody please explain how to get it

Answers

How much gravitational potential energy does the block have
when it gets to the top of the ramp ?

(weight) x (height) = (15 N) x (0.2 m) = 3 Joules .

If there were no friction, you would only need to do 3 Joules of work
to lift the block from the bottom to the top.

But the question says you actually have to do 4 Joules of work
to get the job done.

Friction stole one of your Joules along the way.

Choice-4 is not the correct one.
Choice-1 is the correct one.

===========================

Notice that the mass of the block is NOT 15 kg , and you
don't have to worry about gravity to answer this question.

The formula for potential energy is (m)·(g)·(h) .
But (m·g) is just the WEIGHT, and the formula
is actually (weight)·(height).
The question GIVES us the weight of the block . . . 15 N .
So the potential energy at the top is just (15N)·(0.2m) = 3 Joules.

1. Show how the alternative definition of power, found in your book, can be derived by substituting the definitions of work and speed into the standard definition of power, P = W / delta t.

2. A real spring does not oscillate forever. Instead, it eventually comes to a stop. Does this violate the Law of Conservation of Energy? Explain why or why not.

Answers

1) Star from the definition of power:

P = work/ time = W / Δt

We know that work is given by force times displacement:
W = F · Δd
Substituting in our formula:
P = F · Δd / Δt

But we know by definition that Δd / Δt = velocity, therefore we can write:
P = F · v
which is the alternative formula saying that Power is equal to Force times Velocity

2) No, it is not a violation of the Law of conservation of energy because as the spring slows down, the kinetic energy is transformed into potential energy and their sum stays constant.

As part of the photoelectric effect, which of these is responsible for the pixels in an image on a digital camera?

A. accumulated electrons that are absorbed by the image sensor.
B. accumulated electrons that are ejected by the image sensor.
C. accumulated photons that are ejected by the image sensor.
D. accumulated photons that are absorbed by the image sensor.,

Answers

The answer is D. Photons are individual units of light. In order for an image to exist, they need to be absorbed by something that can use them to create the picture. In old days, this was Silver Nitrate applied to film, but today it is the digital camera itself that does this. Electrons are something different entirely, so A and B are wrong, and C is wrong because the photons are not ejected by the image sensor.

Answer:

It's B) accumulated electrons that are ejected by the image sensor

On edge 2020

Explanation:

Which of the following are metalloid elements?

Check all that apply.

A. Boron (B)
B. Phosphorus (P)
C. Silicon (Si)
D. Tin (Sn)
E. Lead (Pb)

Answers

uuuuuuuuuuuuuuuuuiiiiiiiiiiiii

Boron and Silicon are metalloids

20 points BRAINLIEST!!! ASAP ANSWER

Choose one piece of evidence. Explain, in your own words, how it supports the Big Bang Theory.
A. Redshift
B. CMB
C. Hydrogen and Helium
D. Less Evolved Distant Galaxies

Answers

The redshift shows that distant galaxies are moving away. The further away the galaxy, the bigger the redshift. More distant galaxies are moving away faster. Evidence that the universe is expanding and the start of the universe could have been from a single explosion. The Big Bang theory proposes that the universe began in a small space that was hot and dense and then expanded. A massive explosion expansion sent all matter outwards which caused the universe to expand.

Homeowners will typically have their heaters set for about 140 degrees F. What is that temperature in C.

Answers

It would be 60 degrees Celsius:)

To convert 140 degrees Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature and multiply the result by 5/9, resulting in 60 degrees Celsius.

To convert a temperature from Fahrenheit to Celsius, we can use the formula: C = (F - 32) × 5/9, where F is the temperature in degrees Fahrenheit and C is the temperature in degrees Celsius. So, for a heater set to 140 degrees Fahrenheit, the conversion to Celsius would be:

C = (140 - 32) × 5/9

C = (108) × 5/9

C = 60

Therefore, 140 degrees Fahrenheit is equal to 60 degrees Celsius. This knowledge is essential when discussing the power needed to keep a house warm, as energy requirements are usually given in watts per degree Celsius (W/°C).

Work output of a large machine in a factory is 89,000 joules, and it’s input is 102,000 joules. Work output of a similar machine is 92,000 joules, and it’s work input is 104,000 joules. Which machine has a greater efficiency

Answers

(89000/102000)×100
=87.25%

(92000/104000)×100
=88.46%

efficiency is (output/input)×100
if u get confused which way input and output should go, remember the smaller value is always output and it's above in the fraction, then only it's possible to get a efficiency lower than 100.

Answer:

The machine with work input of 104,000Joules and work output of 92,000 has the greater efficiency

Explanation:

Efficiency of a machine is the ratio of work done by a machine(work output) to work put in the machine (work input).

Mathematically,

Efficiency = Work output/Work Input ×100

For the machine with work output of 89,000Joules and work input of 102,000Joules, its efficiency will be;

Efficiency = 89,000/102,000×100

Efficiency = 87.5%

Similarly for the other machine with work output of 92,000Joules and work input of 104,000Joules, its efficiency will be;

Efficiency = 92,000/104,000×100

Efficiency = 88.5%

Comparing the efficiency of both machines, the machine with efficiency of 88.5% has greater efficiency.

Write the value 299,792,458 m/s in proper scientific notation to 4 significant figures. 2.998 × 108 m/s 2.997 × 108 m/s 2.998 × 106 m/s 2.997 × 106 m/s

Answers

First, let's find the correct exponent. We have 8 digits after the first digit (2), therefore the exponent will be 8. So, the correct answer must be among the first two options.
To understand which one is correct, let's have a look at the digits after 2. We have: 9979. If we want to round this number, it will be 998, because after the 7 we have a digit which is larger than 5, so 7 must be rounded to 8. Therefore, the correct number will be:
[tex]2.998\cdot 10^8 m/s[/tex]

Whats number 4 ?????????

Answers

I believe c is the right answer.

James rode his bike 0.65 hours and traveled 8.45 km. What was his speed?

Answers

Speed = (distance covered) / (time to cover the distance)

= ( 8.45 km) / (0.65 hr)

= (8.45 / 0.65) km/hr

= 13 km/hr

Final answer:

James's average speed was calculated by dividing the distance he traveled, 8.45 km, by the time it took, 0.65 hours, resulting in an average speed of 13 km/h.

Explanation:

To find James's speed, you need to divide the total distance he traveled by the total time it took him. In this case, the distance traveled is 8.45 km and the time is 0.65 hours. Use the formula speed = distance/time to calculate the speed.

The calculation would be:

Convert time to the same unit as speed (hours to minutes or kilometers per hour). Here, the time is already in hours.Divide the distance by the time: 8.45 km ÷ 0.65 hours = 13 km/h.

So, James's average speed while riding his bike was 13 kilometers per hour (km/h).

The typical speed is the all out distance went by the item in a specific time stretch. The typical speed is a scalar amount. It is addressed by the greatness and doesn't have heading.

Could someone help with these two answers please?

If the air inside a balloon exerts a force of 1.5 N on an area of 0.5 m², what is the pressure inside the balloon?
A. 0.5 N/m²
B. 1.5 N/m²
C. 2.5 N/m²
D. 3 N/m²

As your airplane takes off from an airstrip on the ground and rises 30,000 feet into
the sky, what happens to the air pressure on the outside of the airplane?
A. The air pressure decreases.
B. The air pressure increases.
C. The air pressure stays the same.
D. More information is needed.,

Answers

A) pressure = Force/ Area. Pressure = 1.5/0.5 = 3. B) Option A. The air pressure decreases. Since atmospheric pressure decreases with increasing altitude, as the plane soars higher and higher the pressure on the outside decreases since there are fewer air molecules -- the total weight of the air above a unit area becomes increasingly small. As we move higher up earth's surface, there are fewer air molecules than at lower levels; this explains why pressure decreases with increasing altitude.

Which are true statements?

Check all that apply.

A. 1 mol is 6.02 × 1023 of something.
B. 6.02 × 1023 g is the weight of 1 mol.
C. The mass of 1 mol is the same as the atomic mass in grams.
D. A mole is the atomic mass.

Answers

A. 1 mol is 6.02 × 10^23 of something.

C. The mass of 1 mol is the same as the atomic mass in grams.

Which of the following represents the greatest energy transition from a higher energy level to a lower one?

emission of a blue photon of 450 nm

emission of a red photon of 770 nm

emission of a green photon of 550 nm

emission of a yellow photon of 590 nm

Answers

You need to use Planck's law:
E = h·υ = (h·c)/λ

Without making all the calculations, a fraction is bigger than another when the denominator is smaller. Therefore you need to find the smallest wavelength (λ) which is 450nm.

You could also be helped by colors: in order of decreasing energy, you have blue - green - yellow - red.

In any case, the correct answer is a).

Final answer:

The greatest energy transition from a higher energy level to a lower one is represented by the emission of a blue photon of 450 nm.

Explanation:

The greatest energy transition from a higher energy level to a lower one is represented by the emission of a blue photon of 450 nm. This is because the energy of a photon is inversely proportional to its wavelength. As the wavelength decreases, the energy increases. Since blue light has a shorter wavelength than red, green, and yellow light, it has the highest energy.

If the strength of the magnetic field at A is 10 units, the strength of the magnetic field at B is

A)640 units
B)6.4 units
C)2.5 units
D)1.25 units

Answers

Strength or Intensity is the inverse-square of distance, thus I = 1c/d2, where c is a constant
So I(A) = 10, 10 = 1c/(2m)2 = c/4
10 = c/4, c = 40
Now distance of B is 4m, so strength of B:
[tex]I(B) = \frac{1c}{ {d}^{2} } = \frac{40}{ {4}^{2} } \\ I(B) = \frac{40}{16} = \frac{5}{2} = 2.5 \: units[/tex]
Answer: C) 2.5 units

2.5 units is the answer i just answered it right now aha,

is the following chemical equation balanced? 2Na + 2H 2 O 2NaOH + H 2

Answers

yes 2Na + 2H 2 O 2NaOH + H 2 is a balanced chemucal equation

Yes it is.

There are 2 Na atoms on each side,

there are 4 H atoms on each side (2H and H₂),

there are 2 O atoms on each side.

This means that the equation is even (not accounting for energy loss or anything like that).

Which is not a protection against electrical accidents?

a. fuse

b. conducting wire

c. insulation

d. grounded plug

Answers

b. conducting wire
Should be

Conducting wire cannot be a protection against electrical accidents since it is a metal conductor that acts as a carrier of electricity. Others, are safety devices used in electrical circuits like fuse.

Cellular phones use _____?
A) radar waves
B) very high-frequency waves
C) very low-frequency waves
D) microwaves

Answers

Let's see: frequency of cellular phone waves (GSM phones) is (800-1900 MHz). If we look at the table of the electromagnetic spectrum, we can see that this range is contained within the frequencies of the microwaves, which include waves in the range 300 MHz-300 GHz.

So, summarizing, the correct answer is "microwaves".

3. D-Microwaves

1. C-electromagnetic spectrum

2. B-radio waves

^^(for those doing the three question physical science test)

Which statement describes what most likely occurs when a compass is placed next to a simple circuit made from a battery, a light bulb, and a wire?

A. A magnetic field created by the compass increases the current in the electrical circuit.
B. A magnetic field created by the compass causes the light bulb to stop working.
C. A magnetic field created by the electric current places negative charges on the compass.
D. A magnetic field created by the electric current causes the compass needle to move.

Answers

When a compass is placed next to a simple circuit made from a
battery, a light bulb, and a wire, the magnetic field created by the
electric current in the wire causes the compass needle to move. (D)

In this circuit A magnetic field created by the electric current causes the compass needle to move. hence option D is correct.

Faraday's law of induction ?

Faraday's law states that "change in a magnetic field produces electric field in the circuit". It can also be stated as " when magnetic flux linked to a circuit changes, an electromotive force is induced in the circuit which is proportional to the rate of change of the flux".

If the wire shown in the circuit is non coated with insulated material. Current flowing through the circuit produces magnetic field around it. This produced magnetic field affects the magnetic field of middle of the compass. Created magnetic field of wire attract needle due to its magnetic field, as a result needle moves.

Hence option D is correct.

To know more about magnetic field click :

https://brainly.com/question/14848188

#SPJ2.

What is ozone? How and where is it formed in the atmosphere?

Answers

ozone gas is made up of oxygen molecules that have three atoms. it exists in polluted air and ozone layer. Ozone layer is formed in stratosphere(part of atmosphere).

An electric generator transforms mechanical energy into electrical energy. This process could be done by which of these?

A) Using wind to spin a magnet around.
B) Connecting a battery to a coil of wire.
C) Turning a wheel that contains electrons.
D) Spinning a coil of wire near a large magnet.

Answers

Answer:

D) Spinning a coil of wire near a large magnet.

Explanation:

From Faraday's law of induction, when a conducting coil of wire is placed in changing magnetic flux, an emf is induced which produces current in the coil.

Induced emf is given by:

[tex]e = -\frac{d\phi}{dt}[/tex]

A generator is based on the same principle.

The mechanical energy of rotating coil is converted to electrical energy when current is induced. Thus, the correct option is D) Spinning a coil of wire near a large magnet.

Final answer:

An electric generator converts mechanical energy into electrical energy via electromagnetic induction, which is achieved by spinning a coil of a wire near a large magnet. This process is described accurately in option D of the multiple choice question.

Explanation:

An electric generator operates on the principle of electromagnetic induction, which was discovered by Michael Faraday. It involves the conversion of mechanical energy into electrical energy by spinning a magnet within a coil or spinning a coil within a magnetic field. Therefore, the correct answer to which process transforms mechanical energy into electrical energy in an electric generator is D) Spinning a coil of wire near a large magnet.

This process generates an electromotive force (emf) that results in the flow of electric current. The other options mentioned, such as using wind to spin a magnet around (A), connecting a battery to a coil of wire (B), or turning a wheel that contains electrons (C), do not accurately describe the fundamental operation of an electric generator.

Learn more about Electric Generator here:

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True or false, The golf club is swung in a northernly direction, and that is the direction the ball travels

Answers

Yes the answer is trye

Final answer:

The statement is false since merely swinging the golf club in a northern direction does not ensure that the ball will travel in that direction due to external influences like wind and gravity, much like an airplane can be blown off course.

Explanation:

The statement "The golf club is swung in a northernly direction, and that is the direction the ball travels" is false. In physics, particularly when discussing vectors and motions, the direction that an object is initially moved by a force (like a golf club hitting a ball) does not necessarily dictate that the object will continue to move in that initial direction. Various other forces and factors can influence the trajectory. For example, merely swinging the club in a northern direction does not account for factors such as wind, slope of the ground, spin of the ball, and gravity, all of which can alter the path of the golf ball.

Consider the analogy provided using an airplane's motion. An airplane heading north can be moved off that northward path by the wind, causing it to drift westward. Similarly, swinging the golf club in one direction does not guarantee the ball will follow that path precisely. Additionally, according to physics, when a magnet breaks, all pieces will indeed still have north and south poles, indicating that the physical direction is not the only factor determining the outcome—in both magnetism and ball trajectory.

as an object falls freely toward earth, the object's momentum is

1. decreses
2. inceases
3. remains the same,

Answers

The momentum of an object is the result of the mass of that object and the velocity by which it travels. So, since as an object falls towards the earth it's velocity increases, it's momentum would also increase at least until the object reaches its terminal velocity.

The object's momentum remains the same as it descends freely toward the earth.

So, option 3. is correct.

Define momentum.

Momentum is a measurable quantity that exists because an object is moving and has mass. The mass multiplied by the velocity equals momentum. If an item is stationary, its velocity is zero, and it has no momentum.

When an object descends toward Earth, it accelerates due to gravity, accumulating speed and momentum until the upward force of air resistance equals the downward force due to the object's weight under gravity, a point known as terminal velocity.

The law of conservation of momentum asserts that the overall momentum of objects that interact does not change in the absence of external forces such as friction.

So,

The object's momentum 3. remains the same as it descends freely toward the earth.

Find out more information about momentum here:

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Andesitic rocks have mineral compositions between those of ____ and basaltic rocks.

a. conglomerate

c. granitic

b. metamorphic

d. organic

Answers

The answer is C, granitic.

Answer:

The answer is Granitic rock

Explanation:

Granite is a light-colored igneous rock with pieces that are large enough to be visible with the naked eye. It is formed from the slow crystallization of magma below Earth's surface which we call as lava. Granite is composed mainly of quartz and feldspar with very small amounts of mica, amphiboles, and other minerals. If we talk about Andesitic rocks, they contain mineral compositions between those of granite and basaltic rocks.

I need help with 2 questions . Please help c:

1 . According to the nebular theory, the solar system formed from ?

accretion of protoplanets.
a large, thin cloud of dust and gas.
colliding planetesimals.
all of the above

2. Which of the following statements explains why the terrestrial planets are small and rocky instead of large and less dense like the gas giants?

The inner planets were exposed to much higher temperatures.
Ice-forming compounds vaporize at high temperatures.
Rock-forming materials can condense at high temperatures.
all of the above

Answers

a) According to the nebular theory, the Solar System formed from a huge gaseous nebula which at a certain point was perturbated. Atoms and molecules started colliding, forming planetesimals (a sort of big rocks). The planetesimals were attracted to each other by gravity, forming bigger warm almost spherical objects called protoplanets, which at the end cooled down forming planets.
Therefore the correct answer is "all of the above".

b) The planets closer to the Sun were (and still are) subject to higher temperatures, due to their close distance to the Sun. In these conditions, rocky materials undergo condensation, while iced gaseous materials undergo vaporization. In the outer parts of the Solar System temperatures are too low to allow these transformations.
The correct answer is again "all of the above".

What is necessary for a substance to be a conductor of electricity?

Answers

The main requirement for a good conductor of electricity is to have a lot of valence electrons. Valence electrons are the electrons of the outer shells of atoms not bound with other atoms (for example through covalent bounds). These electrons are "free to escape" as soon as an electric field with enough intensity is applied to the material, and therefore these electrons will be free to move in the material producing an electric current.

The closeness of measured values to an accepted value is the BLANK of the data ?

Answers

Answer: accuracy

Justification:

Any measure of a physical data is subject to errors. The errors can be of different kind.

The closer is a measure to the real or accepted value the more accurate the measure is.

For example, if you measure the length of a sheet of paper letter size and you know that the accepted value is 11 inches, then you can tell how accurate your measure is comparing with 11 inches.

Many times the measure is affected by the accuracy of the instrument used (the divisions), but it is also subject to human errors, and may be errors due to the method of measuring.

Where in the motion is the magnitude of the net force on the object a maximum? where in the motion is the speed a maximum?

Answers

Assuming you are asking about some sort of oscillation, the magnitude of the net force is maximum where the acceleration of the object is the largest. The velocity of an object is maximum where the acceleration is zero.

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