Answer:
b
Explanation:
The Theoretical temperature ie, Absolute Zero is when "All particles in a sample can never all be moving at once." Hence, Option (A) is correct
What is Absolute Zero temperature ?
It is determined by ideal gas law; absolute zero is taken as −273.15 degrees on the Celsius scale (International System of Units), which equals −459.67 degrees on the Fahrenheit scale.
Absolute zero is the lowest limit of the thermodynamic temperature scale, a state at which the enthalpy and entropy of a cooled ideal gas reach their minimum value, taken as zero kelvin.
The fundamental particles of nature have minimum vibrational motion, retaining only quantum mechanical, zero-point energy-induced particle motion.
According to the laws of thermodynamics,
Absolute zero cannot be reached using only thermodynamic means, because the temperature of the substance being cooled approaches the temperature of the cooling agent asymptotically and a system at absolute zero still possesses quantum mechanical zero-point energy, the energy of its ground state at absolute zero.
The kinetic energy of the ground state cannot be removed.
Therefore,
The theoretical temperature ie, Absolute Zero is when "All particles in a sample can never all be moving at once." Hence, Option (A) is correct
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How many different elements are there in 4AgNO3
Answer:
bobo ang brainly
Explanation:
kasi hindi nya binibigay a ng tamang question
can someone help with this please? greatly appreciated!
Answer:
Explanation:
a) When the iron rod is heated, it expands (gets larger). That's the key to this whole procedure. It doesn't expand much -- depending on what temperature the iron rod is heated up to.
When the rod looks like it has expanded as much as it can, the rod is tightened as much as it can be tightened before damage is done. When the rod cools, it contracts (gets smaller). That brings the walls closer together or it stops the walls from bulging.
Very interesting question. I've never seen this. Thanks for asking.
For this lab it is not necessary to observe any special lab precautions.
A) True
B) False
The result of combining Epson salt and ammonia are__________________.
A) Bubbles
B) Change of color
C) Formation of solid material
Answer:
Hello! Your answer would be, BELOW
Explanation:
A) True
B) Change of color
Hope I helped! Ask me anything if you have any questions. Brainiest plz!♥ Hope you make a 100%. Have a nice morning! -Amelia♥
Which of the following is a secondary pollutant?
A. Water vapor from a factory smokestack
B. Particulate matter, such as soot
Ο Ο Ο Ο
C. Carbon monoxide from car exhaust
D. Acid rain
Answer:
A. Water vapor from a factory smokestack
You start at (8, 1). You move right 2 units. Where do you end
Answer:
(10,1) I Believe this is the correct response, if not I apologize. Hope it helps! (^^)
Pleaseeee help I’m desperate
If u can answer all three of them
I’ll give you brainliest
Answer:
5.80
Explanation:
FIRST GETS BRAINLIEST (THE ONE THAT IS CORRECT)
A generator changes (Mechanical, Electrical, Static) energy into
(Mechanical, Electrical, Magnetic) energy.
Answer:
mechanical energy to electrical energy
Explanation:
The water turns the turbine with produces mechanical energy so the generator converts it to electrical energy
When the pH of an aqueous solution is 8, what is the OH- ion concentration in moles per liter?
A. 1 × 10-14
B. 1 × 10-8
C. 1 × 10-7
D. 1 × 10-6
Answer:
D. 12 is 1 × 10-6
Explanation:
The answer is Option D is correct , the OH- ion concentration in moles per liter is 1 x 10 ⁻⁶ moles /liter .
What is pH ?
It is a measure of how acidic/basic water is.
The range goes from 0 to 14, with 7 being neutral.
pH less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.
The pH of water is a very important measurement concerning water quality.
pOH = - log [OH⁻]
pH + pOH = 14
We have been given that pH is 8
so pOH will be 14 - 8 = 6
pOH = - log[OH⁻]
[OH⁻] = antilog [- pOH]
[OH⁻] = antilog [-6]
[OH⁻] = 1 x 10 ⁻⁶ moles /liter
Therefore Option D is correct , the OH⁻ ion concentration in moles per liter is 1 x 10 ⁻⁶ moles /liter .
To know more about The answer is Option D is correct , the OH- ion concentration in moles per liter is 1 x 10 ⁻⁶ moles /liter .
What is pH ?
It is a measure of how acidic/basic water is.
The range goes from 0 to 14, with 7 being neutral.
pH less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.
The pH of water is a very important measurement concerning water quality.
pOH = - log [OH⁻]
pH + pOH = 14
We have been given that pH is 8
so pOH will be 14 - 8 = 6
pOH = - log[OH⁻]
[OH⁻] = antilog [- pOH]
[OH⁻] = antilog [-6]
[OH⁻] = 1 x 10 ⁻⁶ moles /liter
Therefore Option D is correct , the OH⁻ ion concentration in moles per liter is 1 x 10 ⁻⁶ moles /liter .
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PLZ ANSWER
Unit Activity: Kinetic Molecular Theory and Gas Laws
Part A
What is the composition and percentage of the gases in Earth’s atmosphere?
Part B
List in ascending order the different layers of atmosphere, their heights, and main features.
Part C
Why are the gases in the troposphere layer denser than the gases in the other layers? Give reasons for your answer.
Part D
How does the kinetic theory of gases explain the weather changes happening in the troposphere? You can also research on the Internet using keywords such as troposphere, atmospheric layers, and weather changes.
Answer:
part a
Earth's atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent
part B
The atmospheric layers are as follows.
Troposphere : The Troposphere is the atmospheric layer closest to the Earth. ...
Stratosphere : The Stratosphere is just above the troposphere, starting at an average altitude of about 7 miles above the sea level. ...
Mesosphere : ...
Thermosphere : ...
Ionosphere : ...
Exosphere :
part c
The troposphere is denser than all its overlying atmospheric layers because a larger atmospheric weight sits on top of the troposphere and causes it to be most severely compressed. ... Nearly all atmospheric water vapor or moisture is found in the troposphere, so it is the layer where most of Earth's weather takes place
part D
It also states that the average kinetic energy of gas molecules is proportional to its temperature. Scientists know that the uneven heating of the Earth is what causes wind and weather in the troposphere
these are the correct answers
please mark brainliest
Answer:
part a
Earth's atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent
part B
The atmospheric layers are as follows.
Troposphere : The Troposphere is the atmospheric layer closest to the Earth. ...
Stratosphere : The Stratosphere is just above the troposphere, starting at an average altitude of about 7 miles above the sea level. ...
Mesosphere : ...
Thermosphere : ...
Ionosphere : ...
Exosphere :
part c
The troposphere is denser than all its overlying atmospheric layers because a larger atmospheric weight sits on top of the troposphere and causes it to be most severely compressed. ... Nearly all atmospheric water vapor or moisture is found in the troposphere, so it is the layer where most of Earth's weather takes place
part D
It also states that the average kinetic energy of gas molecules is proportional to its temperature. Scientists know that the uneven heating of the Earth is what causes wind and weather in the troposphere
Explanation:
plato
Fullerenes (like the one shown) are made up of hexagonal rings of carbon atoms (like in graphite or graphene) and alternating pentagonal and heptagonal carbon rings to allow curvature of the surface producing molecules that have a complete hollow shape.
The extremely small diameter of the nanoparticle fullerenes (which act like a cage) allows them to readily pass through cell membranes and be readily absorbed into the body.
What potential benefit does this have in the pharmaceutical industry as well as medicine?
A)
The very small fullerene molecules would keep cancer cells from invading other healthy cells. As a result, it would keep cancer from spreading.
B)
The very small fullerene molecules could allow surgeons to see the insides of cells with tiny cameras as they perform complex surgery.
C)
The very small fullerene molecules could obstruct hazardous chemicals from getting into absorbed into cells.
D)
The very small fullerene molecules could easily deliver drugs directly into cells in a highly controlled manner.
Answer:
Your answer choice is D
Explanation:
I just got it right on USATestprep :))
Dissolved hydrofluoric acid reacts with dissolved sodium hydroxide to form water and aqueous sodium fluoride
Answer:
HF(aq)+NaOH(aq)→NaF(aq)+H2O(l)
Explanation:
Complete question
Dissolved hydrofluoric acid reacts with dissolved sodium hydroxide to form water and aqueous sodium fluoride. What is the net ionic equation
Equilibrium equation between the undissociated acid and the dissociated ions
HF(aq)⇌H+(aq)+F−(aq)
Sodium hydroxide will dissociate aqueous solution to produce sodium cations, Na+, and hydroxide anions, OH−
NaOH(aq)→Na+(aq)+OH−(aq)
Hydroxide anions and the hydrogen cations will neutralize each other to produce water.
H+(aq)+OH−(aq)→H2O(l)
On combining both the equation, we get –
HF(aq)+Na+(aq)+OH−(aq)→Na+(aq)+F−(aq)+H2O(l)
The Final equation is
HF(aq)+NaOH(aq)→NaF(aq)+H2O(l)
Based on the electron configuration of the two atoms, predict the ratio of metal cationic (+) atom to nonmetal anionic (-) atom in the compound. sodium and bromine
Answer:
A. 1:1
Explanation:
The ratio of metal cationic (+) atom to nonmetal anionic (-) atom in the sodium and bromine compound is 1:1 because sodium needs to lose one electron and bromine needs one electron to become stable and complete its outermost shell. When sodium lose electron, it become cation and gain +1 charge while on the other hand, the bromine accept one electron and become anion and gain -1 charge so that's why we can say that there is 1:1 of metal cationic (+) atom to nonmetal anionic (-) atom in the sodium and bromine compound.
How do the circulatory system and respiratory system interact and work together?
I would say because the respiratory system brings in the oxygen for the body and the circulatory system moves it throughout the body with the blood
Answer:
The respiratory system helps you breath meanwhile your circulatory system helps the oxygen circulate in your blood throughout your body.
Explanation:
It helps you do many tasks like running, sprinting, etc.
10 points. Any help is appreciated.
Answer:
I dont see the image
Explanation:
pls make it close up
(1) We are sorry to say that we will not be able to publish your short story "Max versus the Robots in the school literary magazine. (2) Our editorial board enjoyed the story's creative setting and interesting characters. (3) However, the board ultimately decided that the plot was too confusing, and several members found the ending to be implausible. (4) In addition, some readers were concerned that the technical details about robots were totally boring. (5) Although we have to reject this story, we hope to publish your work in the future, so please submit a story to us again. Which option best revises this paragraph to maintain a formal tone throughout? (T) A. Replace sentence 4 with: In addition, some readers were concerned that the technical details about robots would not be of interest to most students. B. Replace sentence 2 with: The creative setting was enjoyed by the board, and the interesting characters were appreciated bynbe board as well! c. Replace sentence 5 with: While it is with great regret that we must rebuff your literary endeavor, we would like to disseminate a future opus penned by you If you would be so kind as to dispatch an additional work to us for our consideration. 0 D. Replace sentence 3 with: But the editorial board ultimately decided that the plot was too confusing, and several members had no clue what the deal was with the ending,
B.
Replace sentence 4 with: In addition, some readers were concerned that the technical details about robots would not be of interest to most students.
Explanation:
i just did the test
Answer:
It's B.
Explanation:
what happens if water is added to concentrated acid
Answer:
Heat is released when they are both mixed together.
Explanation:
3. At 10.0°C and 2.00 atm, the volume of the gas is 75.0 mL. If the temperature of the gas increases to
35.0°C and the pressure decreases to 1.00 atm, what is the new volume?
a. 1630 mL
b. 138 ml
c. 163 mL
d. 0.0017mL
Explanation:
c.
[tex]from \\ \frac{P _{1} V _{1} }{T _{1}} = \frac{P _{2} V _{2}}{T _{2}} \\ \frac{2 \times 75}{(10+273)} = \frac{V _{2} \times 1}{(35+273)} \\V _{2} = \frac{2 \times 75 \times (35+273)}{(10+273) \times 1} \\ V _{2} = 163 \: ml[/tex]
An irregular sample of zinc has a mass of 23.21 g. This sample is carefully placed in a graduated cylinder of water with an initial volume of 18.75 . What is the final volume of the water and zinc? The density of zinc is 7.140 g/cm^ 3
Answer:
Final of of zinc is "3.25 ml" and water is "22 ml".
Explanation:
The given values are:
Mass of Zn,
= 23.21 g
Initial volume,
= 18.75 ml
Density,
= 7.140 g/cm³
Now,
The final volume of water = [tex]Initial \ volume+Volume \ of \ Z_n[/tex]
Or,
Volume of zinc will be:
= [tex]\frac{Mass \ of \ Zn}{Density \ of \ Zn}[/tex]
On substituting the values, we get
= [tex]\frac{23.21}{7.140}[/tex]
= [tex]3.25 \ cm^3[/tex]
or,
= [tex]3.25 \ ml[/tex]
hence,
Water's final volume will be:
= [tex]18.75+3.25[/tex]
= [tex]22 \ ml[/tex]
The final volume of the water and zinc is 22 cm³
mass of zinc = 23.21 grams
Initial volume of water = 18.75 cm³
density of zinc = 7.140 g / cm³
The final volume of water and zinc can be calculated as follows:
density = mass / volume
volume of zinc = mass / density
volume = 23.21 / 7.140
volume = 3.25070028011
volume of zinc = 3.25 cm³
The final volume of water and zinc = 3.25 + 18.75 = 22.0007002801
The final volume of water and zinc = 22 cm³
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Night visin cameras are sensitive to energies around 2.21 x 10-19 J. What wavelength of electromagnetic radiation do they use?
Answer:
8.99×10^-7m
Explanation:
The wavelength can be calculated using the expression below
E=hcλ
Where E= energy= 2.21 x 10^-19 J.
C= speed of light= 3x10^8 m/s
h= planks constant= 6.626 × 10^-34 m2 kg / s
E=hcλ
λ= E/(hc)
Substitute for the values
λ=( 2.21 x 10^-19 )/(6.626 × 10^-34 × 3x10^8 )
= 8.99×10^-7m
Answer:
Look at the explanation this one is hard
Explanation:
show your work:
E = hc/ λ
E λ = hc
λ = hc/E
λ = 6.626 x 10^-34 x 3 x 10^8 / 2.21 x 10^-19
=
8.994 x 10-7 m or 899.4 nm
800nm – 3mm is the range of wavelengths for infrared waves.
Night vision cameras use infrared waves.
How many particles are in 0.55 mil NaCl?
Answer:
2 atoms
Explanation:
PLS HELP ASAP NO LINKS PLS
How long is radioactive waste from nuclear plants radioactive?
1,000 years
10,000 years
100 years
100,000 years
Answer:
1000 years.
Explanation:
I'm not shure how to explain. it is a facr
What is Dalton’s Law as it applies to partial pressures?
Answer:
According to Dalton's law of partial pressures, the total pressure by a mixture of gases is equal to the sum of the partial pressures of each of the constituent gases. The partial pressure is defined as the pressure each gas would exert if it alone occupied the volume of the mixture at the same temperature.
Which of the following is the same as 1 second?
O A. 1,000 ks
B. 0.1 ms
C. 100 cs
D. 100 ms
1. Does warm air rise or sink? Does cold air rise or sink?
2. Air pressure can be high or low. Does air flow from low to high pressure or from high to low pressure?
3. Which is heavier—warm air or cold air?
4. Which has higher air pressure—warm air or cold air? How do you know?
5. Global circulation cells occur because of uneven heat distribution and the earth's rotation. What do we call the effect of the earth's rotation on air circulation?
Answer:
1. Hot air rises and cold air descends for exactly the same reason
Matter are anything that is made up of atoms. The quantity of matter can be seen only on the basis of mass and volume calculation. Therefore, warm air rise and cold air sink.
What is matter?Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science.
Matter is anything that is made up of atoms. Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter.
Warm air rises while cold air descends. This is because hotter air takes more energy than cooler air. Furthermore, hot and cold temperatures are precisely proportionate to their density. As a result, when it's really hot, the hotter air is more likely to rise than when it's very cold.
Therefore, warm air rise and cold air sink.
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A hydrate of copper (II) chloride, CuCl2∙nH2O, is heated until the mass of the anhydrate remains constant at 19.72 g, indicating a loss of 5.32 g of water. How many moles of water are present for each mole of salt in the original hydrate? (Find n.)
Answer:
n = 2
Explanation:
To solve this question we must find the moles of the anhydrate CuCl2 (Obtained from the mass of 19.72g) and the moles of water (Obtained from the 5.32g):
Moles CuCl2 -Molar mass: 134.45g/mol-
19.72g * (1mol / 134.45g) = 0.14667 moles
Moles H2O -Molar mass 18.01g/mol-
5.32g * (1mol / 18.01g) = 0.2954 moles
The ratio of moles of H2O:CuCl2 is:
0.2954 moles / 0.14667moles = 2.0
That means n = 2 and the formula is:
CuCl2∙2H2O
PLS HELP NO LINKS PLS
What percentage of stars do Kepler scientists suggest host Earth size planets?
10.2%
2.6%
5.4%
15.9%
so the other guy can have branliest have a wonderful summer guys! :)
Response Sheet-Investigation 5
A group of young students looked at the oak trees in a local park.
They wondered this question. Giant oak trees grow from tiny acorns,
so where do all of their wood, bark, and leaves come from?
One student explained, "Once the acorn sprouted in the ground, the
plant grew so big from minerals and nutrients in the soil."
Another student said, "I think the plant's mass came from the food
it ate."
What would you say to these students?
A group of young students looked at the oak trees in a local park.
They wondered this question. Giant oak trees grow from tiny acorns,
so where do all of their wood, bark, and leaves come from?
One student explained, "Once the acorn sprouted in the ground, the
plant grew so big from minerals and nutrients in the soil."
Another student said, "I think the plant's mass came from the food
it ate."
What would you say to these students?
First, I will tell the students that oak trees do indeed grow from tiny acorns (nut), seeds, or stem cuttings.
Then, I will go ahead to explain to them how they grow so big with their wood, bark, and leaves.
The seeds first sprout from the acorn by utilizing the food reserves in the seed's embryo for its metabolismOnce the acorn sprouts, the root takes up mineral, nutrient, and water from the soil and these materials are used by seed cotyledons to manufacture food via photosynthesismanufactured foods are utilized to build the plant's body, including increase in the number of leaves, girths, barks, and woods.More on the oak plant can be found here: https://brainly.com/question/22999577
What do polar bonds share with electrons?
Answer:
Polar Covalent Bonds. A polar covalent bond exists when atoms with different electronegativities share electrons in a covalent bond. Consider the hydrogen chloride (HCl) molecule. Each atom in HCl requires one more electron to form an inert gas electron configuration.
Explanation:
Explain why is it a good idea for the eco-house to have both a wind turbine and solar panels?
Answer:
Explanation:
Wind is more of an efficient power source than solar. Compared to solar panels, wind turbines release less CO2 to the atmosphere, consume less energy, and produce more energy.
A gas has a volume of 240 mL and a pressure of 0.99 atm. If the pressure is decreased to 0.951 atm, what is the new volume of the gas?
V2 = 250 ml
Explanation:
Given:
P1 = 0.99 atm. V1 = 240 ml
P2 = 0.951 atm. V2 = ?
We can use Boyle's law to solve for V2
P1V1 = P2V2
V2 = (P1/P2)V1
= (0.99 atm/0.951 atm)(240 ml)
= 250. ml