When circumstances are right, most materials undergo a process called thermal expansion. Which statement best describes the cause and effect of thermal expansion? Group of answer choices Matter is heated, and its particles spread out more. Matter is heated, and its particles move closer together. Matter is cooled, and its particles move closer together. Matter is cooled, and its particles spread out more.

Answers

Answer 1

Answer: Matter is heated, and its particles spread out more

Explanation:

Thermal expansion occurs when there's an expansion of an object or material or when an object becomes bigger because of a rise in its temperature. This brings about the faster movement of the heated molecules and the atoms spreading out.

Therefore, the cause and effect of thermal expansion will be that when matter is heated, and its particles spread out more.


Related Questions

What gives yeast cells what it needed to reproduce and grow?

Answers

Answer:

Yeasts reproduce asexually by a process called budding (see Figure 8.2. 1 and Figure 8.2. 6). A bud is formed on the outer surface of the parent cell as the nucleus divides.

Explanation:

using the ideal gas law, PV=nRT, where R=0.0821 L atm/mol K, calculate the volume in liters of oxygen produced by the catalytic decomposition of 25.5 g potassium chlorate according to the following reaction. The oxygen is collected at 2.22 atm and 25.44 C. express your answer to the correct number of significant figures.
2KClO3(s) ---> 2KCl(s) + 3O2(g)

Answers

Answer:

V = 2.32 Liters

Explanation:

PV = nRT => V = nRT/P

n = 25.8g/122g/mole = 0.21 mole

R = 0.08206 L·atm/mol·K

T = 25.44°C + 273 = 298.44K

P = 2.22 atm (given in problem)

V = (0.21mol)(0.08206 L·atm/mol·K)(298.44K)/(2.22atm) = 2.32 Liters at 25.44°C & 2.22atm

look at the picture below of an astronaut at two different distance from a planet. in which position A and B would there be a stronger gravitational pull between the astronaut and the planet? Explain


please help please please please please please please please please help it's due right now at 8:20pm please please help please really need help please​

Answers

Answer:

B

Explanation:

Gravitational pull is stronger when the person is closer to the planet.

The gravitational force is the fundamental force of the universe. Here the astronaut at position B will experience a stronger gravitational pull as compared to the astronaut at position A.

What is gravitational force?

The gravitational force is defined as the force of attraction between any two bodies is directly proportional to the product of their masses and is inversely proportional to the square of the distance among them.

F = G m₁m₂ / r²

The gravitational force decreases with the increase in the distance. So here distance of astronaut at position B which is closer to the planet experience greater gravitational pull.

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science vocab (image attached)

Answers

Answer:

Solution-a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).

solvent- able to dissolve other substances.

solute- the minor component in a solution, dissolved in the solvent.

colloid- a homogeneous noncrystalline substance consisting of large molecules or ultramicroscopic particles of one substance dispersed through a second substance. Colloids include gels, sols, and emulsions; the particles do not settle, and cannot be separated out by ordinary filtering or centrifuging like those in a suspension.

suspension- is a heterogeneous mixture that contains solid particles sufficiently large for sedimentation.

Explanation:

What architectural achievement of Nebuchadnezzar II is considered one of the Seven Wonders of the Ancient World? EXPLAIN. IF YOU DONT I WILL REPORT YOU

Answers

Answer:

D

Explanation:

The architectural achievement of Nebuchadnezzar II which is considered one of the Seven Wonders of the Ancient World is the Hanging Gardens of Babylon.

The Hanging Gardens were said to be a lush and elaborate terraced garden complex located in the city of Babylon, in present-day Iraq. According to ancient accounts, the gardens were built by Nebuchadnezzar II in the 6th century BCE as a gift to his wife Amytis, who missed the green hills and gardens of her homeland.

The gardens were renowned for their impressive engineering and beauty. They were designed to resemble a large artificial mountain, with ascending terraces supported by vast stone columns and arches. Each terrace was filled with a variety of plants, trees, and flowers, creating a mesmerizing display of color and fragrance.

Hence, the architectural achievement of Nebuchadnezzar II is considered one of the Seven Wonders of the Ancient World is Hanging Gardens

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what's element on the periodic table has the symbol w ​

Answers

Tungsten is the symbol

Answer:

W is tungsten on the periodic table

In the case of a rigid rorator, i.e. two masses M1 and M2 placed on a rigid weightless rod, we start from the Schrodinger equation for two particles 1 and 2, and then we separate the movement of the center of masses. Give the formulas of both masses that we get as part of this procedure. Calculate these masses in atomic mass units for the HD molecule by approximating the masses H and D with their mass numbers.

Answers

Answer:

Masses in atomic mass units for the HD molecule by approximating the masses H and D with their mass numbers is explained below in complete detail.

Explanation:

Two volumes M1 and M2 are located on a rigid weightless rod in a rigid rotor position. Energy in a rigid rotator example: E = BJ(J+1) where, B = h/8pi2Ic, B is rotational regular, I is moment of inertia = ur2 where u is decreased mass = m1m2/m1+m2.

FOR HD MOLECULE: mass, u = mass of H*mass of D/mass of H + D. Atomic mass unit =1.67*10^-27 kg. So, u = 1*1.67*10-24 * 2*1.67*10-24 / 1.67*10-24+2*1.67*10-24 = 1.67*10-24*2/3 = 1.11*10-24 g.

What mass of sodium hydroxide will neutralize completely 3.612 moles of HCl?

Answers

Answer:

NaOH + HCl = NaCl + H2O

(3.612 moles of HCl) x (1/1) x (39.9971 g/mol) = 144.5 grams

So answer B.

Explanation:

NaOH + HCl = NaCl + H2O

(3.612 moles of HCl) x (1/1) x (39.9971 g/mol) = 144.5 grams

To solve such this we must know the concept of double displacement reaction. Therefore, 144.48g sodium hydroxide will neutralize completely 3.612 moles of HCl.

What is chemical reaction?

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

The balanced reaction is

NaOH + HCl = NaCl + H2O

To neutralize completely 3.612 moles of HCl, 3.612 moles of NaOH  is required.

mass of  NaOH =Mole× Molar mass of NaOH

mass of NaOH=3.612× 40 g/mol

mass of NaOH=144.48g

Therefore, 144.48g sodium hydroxide will neutralize completely 3.612 moles of HCl.

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How many protons and electrons does 8 -2 ion contain

Answers

Answer:

8 protons, 10 electrons.

Explanation:

the -2 charge adds 2 electrons–hence, you have 10 electrons while protons remain at 8.

In carbon dioxide (CO2), there are two oxygen atoms for each carbon atom. Each oxygen atom forms a double bond with carbon, so the molecule is formed by two double bonds.

Two double bonds means that the total number of electrons being shared in the molecule is

two.
four.
six.
eight.

Answers

Answer: D) Eight

Just pretend this part doesn't exist nope nothing to see here the answer is correct on edge2020 I swear on my brainly points

Answer:

d

Explanation:

Which statement best describes visible light?
a. The human eye can only detect visible light as white light.
b. Visible light can only be seen with special equipment or technology.
c. Visible light makes up a small part of the electromagnetic spectrum.
d. The frequency of visible light is the same as the frequency of gamma rays.
(URGENT I NEED THIS RIGHT AWAY) (waves)

Answers

Answer:

The Visible Spectrum Visible light is the light that we can see, and thus is the only light detectable by the human eye. White light is visible light, and it contains all the colors of the rainbow, from red to violet. The range of visible wavelengths is 400 to 700 nanometers.

Explanation:

Trees often lose their leaves in the winter. Explain what this tree will not be able to do without its leaves.

Answers

Answer:

Most aren't able to take in carbon dioxide gas from the air or produce any oxygen.

Explanation:

science bro

Using the equation pH = -log [H+], determine the pH of a solution with a hydrogen ion concentration, or [H+], of 1x10-5. HINT: look at his HCl example!


pH = 7


pH = 1


pH = 5


pH = 2

Answers

Answer:

the answer is pH of 7 I don't no Hydrochloric hijinx work

The equation pH = -log [H+], the pH of a solution with a hydrogen ion concentration is 5. Hence option c is correct.

What is solution?

Solution is defined as a continuous variation of two or more substances in their relative proportions up to what is known as the limit of solubility. Light beams do not disperse in the presence of a solution. In contrast, a suspension of particles might result in Tyndall or Rayleigh scattering. The amount of heat that is released or absorbed during the dissolving process is known as the enthalpy change of solution.

pH is defined as a measurement of how basic or acidic aqueous or other liquid solutions are. A solution's pH is a significant indicator of its chemical composition. The pH can affect how readily available nutrients are, how biological processes work, how bacteria behave, and how chemicals behave.

pH = -log[H+]

pH = -log[1.0 x 10⁻⁵]

pH = 5

Thus, the equation pH = -log [H+], the pH of a solution with a hydrogen ion concentration is 5. Hence option c is correct.

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Discuss an example of evidence astronomers have learned about the universe using gamma rays, x-rays, and/or UV rays mounted on satellites. What impact has this information had on humans? What impact might this information have on humans in the future?

Answers

Answer:

Science tells us that light is the reason we are able to see objects. Without light, we wouldn't be able to process the visible world. ... The electromagnetic spectrum is the range of all types of electromagnetic radiation, including visible light, infrared light, ultraviolet light, X-rays, and gamma rays.

Explanation:

i hope this is right :)

A 0.98 gram sample of a volatile liquid was heated to 348 k. the gas occupied 265 ml of space at a pressure of 0.95 atm. what is the molecular weight of this gas?

Answers

Answer:

The molecular weight is [tex]Z = 111.2 \ g/mol[/tex]

Explanation:

From the question we are told that

   The mass of the sample is  [tex]m = 0.98 \ g[/tex]

    The temperature is  [tex]T = 348 K[/tex]

    The volume which the gas occupied is  [tex]V = 265 \ ml = 265 *10^{-3} L[/tex]

     The pressure is  [tex]P = 0.95 \ atm[/tex]

Generally from the ideal gas equation we have that

       [tex]PV = n RT[/tex]

Here n is the number of moles of the gas while the R is the gas constant with value  [tex]R = 0.0821 \ atm \cdot L \cdot mol^{-1} \cdot K^{-1}[/tex]

        [tex]n = \frac{PV}{ RT}[/tex]

=>      [tex]n = \frac{ 0.95 * 265 *10^{-3} }{ 0.0821 * 348}[/tex]

=>      [tex]n = 0.00881 \ mol[/tex]

Generally the molecular weight is mathematically represented as

          [tex]Z = \frac{m}{n}[/tex]

=>      [tex]Z = \frac{0.98 }{0.00881}[/tex]

=>      [tex]Z = 111.2 \ g/mol[/tex]

What does bacteria cell and plant cell have in common

Answers

Answer:

They both have a cell wall

Explanation:

Consider the following unbalanced equation:
C2H5OH(g) + O2(g) → CO2(g) + H2O(l)
1.86 g of ethanol reacts with 10.0 g of oxygen. What is the total volume of gas present (in L) after the reaction is complete, assuming the reaction takes place at 1.00 atm and 25°C?

Answers

The total volume of gas present (in L) : 14.04 L

Further explanation

Reaction(balanced) :

C₂H₅OH(g) + 3O₂(g) → 2CO₂(g) + 3H₂O(l)

mol C₂H₅OH(MW=46,07 g/mol) :

[tex]\tt \dfrac{1.86}{46.07}=0.04[/tex]

mol O₂(MW=32 g/mol) :

[tex]\tt \dfrac{10}{16}=0.625[/tex]

Limiting reactant :

[tex]\tt \dfrac{0.04}{1}\div \dfrac{0.625}{3}=0.04\div 0.21\rightarrow C_2H_5OH~limiting~reactant[/tex]

mol CO₂ =

[tex]\tt \dfrac{2}{1}\times 0.04=0.08[/tex]

mol O₂(unreacted) :

[tex]\tt 0.625-(3\times 0.04)=0.505[/tex]

Conditions at T 25 ° C and P 1 atm are stated by RTP (Room Temperature and Pressure). Vm(molar volume) in this condition = 24 liters / mol

Total volume of gas :

volume O₂+volume CO₂ =

[tex]\tt 0.505\times 24+0.08\times 24=12.12+1.92=14.04~L[/tex]

Most of the elements in the periodic table can be described as:
A. metalloids
B. halogens
c. non-metals
D. metals

Answers

The answer is D (metal)

The answer would be metals :)

how must carbon and vanadium combine to form a metallic compound?

Answers

Answer:

In general, metal and nonmetals combine to form ionic compounds

Explanation:

How many H atoms in Mg(OH)2

Answers

Answer:

Explanation:

There are 2.

Can a trout and a catfish be members of the same population?

Answers

Answer:

Most likely. They eat different prey items so they would use niche partitioning. for example the leopards and lions of africa. They are both large carnivores, but are able to coexist by evolving to prey on different animals.

Explanation:

According to the CDC, influenza is a respiratory illness caused by the flu virus. Some of the symptoms include cough, sore throat, muscle aches, and vomiting.
Which statement represents a reasonable claim about the effects of the flu virus on the body’s ability to maintain homeostasis?
A
Influenza affects one major system, which must work to restore homeostasis.

B
Influenza affects one system, but multiple systems must interact in order to restore homeostasis.

C
Influenza affects multiple systems and multiple systems must interact in order to restore homeostasis.

D
Influenza affects one major system and secondary systems, but the major system works to restore homeostasis.

Answers

Answer:

B. Influenza affects one system, but multiple systems must interact in order to restore homeostasis.

Explanation:

According to the CDC, influenza is a respiratory illness caused by the flu virus of which some symptoms include cough, sore throat, muscle aches, and vomiting.

The statement that represents a reasonable claim about the effects of the flu virus on the body’s ability to maintain homeostasis is that it affects one system which is the RESPIRATORY SYSTEM but multiple systems must intervene in other to maintain homeostatis.

*Homeostatis is the unique way a human body or organism stabilises its internal state despite the changes on the external.

The compound C2E10H12 (where E is an element) has a formula mass of approximately 144 g/mol. What is the atomic mass of E?

Answers

Answer:

Explanation:

C₂E₁₀H₁₂  = 144

molecular weight of given compound

= 2 x 12 + 10 x E + 12 x 1 = 144 ( atomic weight of C = 12 , H = 1 , E = E )

24 + 10 E + 12 = 144

10 E = 108

E = 10.8

Atomic mass of E = 10.8 u .

PLEASE HELP MEEEE! WILL MARK BRAINLIEST IF CORRECT!

Answers

Answer:

the answer is A

In the reaction of aluminum with iron III oxide, if you start with 54.2 grams of aluminum, how many grams of iron III oxide are needed for the reaction to occur? ​

Answers

Answer:

[tex]m_{Fe_2O_3}=160.41gFe_2O_3[/tex]

Explanation:

Hello!

In this case, since the reaction between aluminum and iron (III) oxide is:

[tex]2Al+Fe_2O_3\rightarrow Al_2O_3+2Fe[/tex]

In such way, since there is 2:1 mole ratio between aluminum (atomic mass = 26.98 g/mol) and iron (III) oxide (molar mass = 159.70 g/mol), we'll be able to compute the mass of the required reactant as shown below:

[tex]m_{Fe_2O_3}=54.2gAl*\frac{1molAl}{26.98gAl}* \frac{1molFe_2O_3}{2molAl}*\frac{159.70gFe_2O_3}{1molFe_2O_3}\\\\m_{Fe_2O_3}=160.41gFe_2O_3[/tex]

Best regards!

is 4 Fe + 3 O2 --> 2 Fe2O3
balanced?

Answers

Answer:

Yes the given equation is balanced.

Explanation:

Chemical equation:

Fe + O₂       →     Fe₂O₃

Balanced chemical equation:

4Fe + 3O₂       →     2Fe₂O₃

There are four iron and six oxygen atoms on both side of equation thus the given equation is balanced.

The given reaction also follow the law of conservation of mass.

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by French chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

This reaction is synthesis reaction:

Synthesis reaction:

It is the reaction in which two or more simple substance react to give one or more complex product.

A + B      →   AB

What is the net ionic equation of Nat + OH + H+ + Cl → H20 + Na+ + Cl?

A. NaOH(aq) + HCl(aq) → H20() + NaCl(aq)
B. Na+ + Cl" > Naci
C. Na+ + OH + H+ + Cl → H+ + OH' + Na+ Cl"
O D. OH + H+ → H20

Answers

Answer:

D. OH⁻ + H⁺ → H2O.

Explanation:

Hello!

In this case, since this problem provides the complete ionic equation by which the neutralization reaction between sodium hydroxide and sodium chloride is carried out:

[tex]Na^+(aq)+OH^-(aq)+H^+(aq)+Cl^-(aq)\rightarrow Na^+(aq)+Cl^+(aq)+H_2O(l)[/tex]

Thus, since sodium and chloride ions are the spectator ones, as they are at both reactants and products, they can be cancelled out to obtain the net ionic equation as shown below:

[tex]OH^-(aq)+H^+(aq)\rightarrow H_2O(l)[/tex]

Therefore, the answer would be D. OH⁻ + H⁺ → H2O.

Best regards!

Draw the Lewis structure for the polyatomic amide anion(NH2-). Be sure to include all resonance structures that satisfy the octet rule.

Answers

Answer:

Following are the solution to this question:

Explanation:

Following are the lewis structure of the [tex]NH_2^{-}[/tex]:

In the given element two H and one N are used, in which N has 5 valance electrons, and one H has 1 valence which is equal to 2 electrons valance. So, the graph for the given element is defined in the attached file.

The Lewis structure for the amide anion can be shown as in the given figure.

What is Lewis structure?

Lewis structures, also known as Lewis dot formulas, are diagrams that show the bonding between atoms of a molecule, as well as the lone pairs of electrons that may exist in the molecule.

In the given element two H and one N are used, in which N has 5 valance electrons, and one H has 1 valence which is equal to 2 electrons valance. The Lewis structure for the amide anion can be shown

Hence, this is the required answer.

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What is the electron configuration of chlorine (CI)?

A. 1s22s22p63s23p3

B. 1s22s22p63s23p5

C. 1s22s22p63s24s23p3

D. 1s22s22p63s23p23d3


The correct answer is B on edg 2020

Answers

Answer: it is b

Explanation:

Which of the following is not a balanced nuclear equation?
O a) 130 Sn + B + 1315b
d) 19Pt → 158 Os+ja
c) Be → 19 Li + AB
b) 2U → 1a +
234
90
Th
Ne

Answers

Answer:

¹⁰₄Be —> ¹⁰₃Li + ⁰₋₁β

Explanation:

To know which equation is unbalanced, we shall compare the mass number and atomic number of the reactant and product together. This is illustrated below:

¹²¹₅₀Sn —> ⁰₋₁β + ¹²¹₅₁Sb

121 = 0 + 121

121 = 121

50 = –1 + 51

50 = 51

Thus the above equation is balanced

¹⁹⁰₇₈Pt —> ¹⁸⁶₇₆Os + ⁴₂α

190 = 186 + 4

190 = 190

78 = 76 + 2

78 = 78

Thus, the above equation is balanced

¹⁰₄Be —> ¹⁰₃Li + ⁰₋₁β

10 = 10 + 0

10 = 10

4 = 3 + (–1)

4 = 3 – 1

4 = 2

Thus, the above equation is unbalanced.

²³⁸₉₂U —> ⁴₂α + ²³⁴₉₀Th

238 = 4 + 234

238 = 238

92 = 2 + 90

92 = 92

Thus, the above equation is balanced.

From the illustrations made above, only ¹⁰₄Be —> ¹⁰₃Li + ⁰₋₁β

Is unbalanced.

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