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The number of energetically equivalent ways that one can distribute the particles in system A and B are 1 and 6 respectively.

From thx complete information, system A has only 1 distribution that's possible.

For system B, the number of ways will be:

= 3 × 2 × 1

= 6

In conclusion, the correct options are 1 and 6 respectively.

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Answer:

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Answer: (B) −198 kJ.

Answer:

Number of valence electrons in two F atom = 2(7) = 14

Total number of valence electrons = 6 + 14 = 20 electrons

Placing a bonding pair of electrons between the atoms to form the chemical bonds.

Electrons used in bonding = 4

The remaining electrons are used as a lone pair for central or terminal atoms to achieve an octet to finish the Lewis dot structure.

Electrons used as a lone pair = 20 - 4 = 16

Explanation:

hope this helps

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Answer:

In some cases, changes in land use may have positive effects, such as increasing habitat (as a result of deliberate habitat restoration measures) and reclamation of previously contaminated lands for urban/suburban development.

Explanation:

BBBBBBBB

Answer:

Explanation: “Insoluble” generally means that a substance does not dissolve in water. Some examples include: sand, fats, wood, metals, and plastic. When we put them in water and try to mix them, they will not dissolve.

Explanation:

Answer:

30%

Explanation:

The relative humidity is the water-vapor content of the air relative to its content at saturation. Saturated air, for example, has a relative humidity of 100 percent, and near the Earth, the relative humidity very rarely falls below 30 percent.

Answer:

9 1/3  liters

Explanation:

N2 + O2 = 2 NO

Find mole weights from table of elements

N =14

O =~16       30 gm is a mole

22.4 l / mole for gases at STP

22.4 * 25/30 = 18 2/3 Liters  of NO  

   but since Nitrogen is N2 it will take 1/2 s much = 9 1/3

*** EDITED ***

According to the stoichiometry and STP conditions if  25.0 g of NO are produced 2269 liters  of nitrogen gas are used.

It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.1 mole of nitrogen gives 2 moles of NO, thus as per ideal gas equation which on substitution gives V=1×8.314×273/1=2269.722 liters.

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#SPJ2

Explanation:

Good question!

When you react an acid with a base,the pH of the product is determined by the concentrations of the reactants (the acid and the base)

If both reactants (acid and base) are strong,the pH of the product is 7

If the acid is stronger than the base,the pH of the product will be less than 7

If the base is stronger,the pH of the product will be greater than 7

I hope this helps

Answer:

Low pressure and high temperature :)

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The concentration of the HCl solution needed to neutralize 25 mL of 0.2 M NaOH is 0.25 M

HCl + NaOH —> NaCl + H₂O

From the balanced equation above,

CaVa / CbVb = nA / nB

(Ca × 20) / (0.2 × 25) = 1

(Ca × 20) / 5  = 1

Cross multiply

Ca × 20  = 5

Divide both side by 20

Ca = 5 / 20

Ca = 0.25 M

Thus, the concentration of the HCl solution is 0. 25 M

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The Co32- ion is a polyatomic molecule and have resonance structure

Resonance structures refer to different sets of Lewis structures that depict and explain the delocalization of electrons in a polyatomic ion or a molecule.

Polyatomic molecules are molecules that are electrically neutral and have three or more atoms held together by covalent bonds. Examples are So3, Co3 and so on.

Therefore, The Co32- ion is a polyatomic molecule and have resonance structure.

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Answer:

Remains the same

Explanation:

I just got it right on Acellus!

Answer:

B.) sodium water right arrow. sodium hydroxide hydrogen

Explanation:

Reactants are listed before the arrow and products are listed after the arrow. This symbolizes the reactants turning into the products.

Reactants --> Products

Reactants are the molecules which react with each other to make new molecules. Since sodium and water are being combined, they are the starting molecules. Products are the molecules made after a reaction occurs. Sodium hydroxide and hydrogen gas are produced, making them the ending molecules. The balanced chemical equation is:

2 Na⁺ (s) + 2 H₂O (l) --> 2 NaOH (s) + H₂ (g)

Answer: 0.130 L

Explanation:

Answer:

Physical :)

Explanation:

Skin works as a shield to the outside elements and does a good job of keeping the bad stuff out. :)

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Answer:

The correct answer is coats the pathogen exterior so that it is recognized by the host's phagocytes. :)

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Answer:

Cr2(SO4)3+K2CO3---------------->Cr2(CO3)3+K2SO4

BALANCING

Cr2(SO4)3+3K2CO3------------------------->Cr2(CO3)+3K2SO4

Explanation:

Answer:

E. 16.6 mol HCl

Explanation:

The equation for the reaction is;

Zn + 2 HCl --> ZnCl2 + H2

From the reaction 2 moles of HCl produces 1 mole of ZnCl2

Therefore; 8.3 moles of ZnCl2 will be produced by;

 = 8.3 moles ×2

 = 16.6 Moles of HCl

 Therefore;  E.  16.6 mol HCl

Answer:

c

Explanation:

Given that sodium hydroxide is a base, it's pH has to be above pH 7. Thus, option c is the correct option.

On the other hand, acids have a pH of lesser than 7 while pure water has a pH of 7. All the other options have a pH of less than 7, indicating that they are acids.

the density increases down the group.

Answer:

600

Explanation:

because if there's 6 molecules in each then 6×100 is 600

If a gas in a balloon occupies 2.25 L at 298 K and 300 kPa, the temperature at which the balloon expand to 3.50L and 2.17 atm is 345.23K.

The temperature of an ideal gas can be calculated using the following formula:

P1V1/T1 = P2V2/T2

Where;

According to the information given in this question;

2.96 × 2.25/298 = 2.17 × 3.5/T2

0.022T2 = 7.595

T2 = 7.595 ÷ 0.022

T2 = 345.23K

Therefore, if a gas in a balloon occupies 2.25 L at 298 K and 300 kPa. the temperature at which the balloon expand to 3.50L and 2.17 atm is 345.23K.

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For a  concentration of  is initially 0.150 M before it proceeds to equilibrium, the equilibrium concentration of B  is mathematically given as

x=3.0*10^{-7}m

Generally, the equation for the  change in Gibbs free energy   is mathematically given as

dG=-RTInK

Therefore

31.5*10*^{3}=-(8.314)(298)(ink)

K=3*10^(-6)

Eqution

A--->B

K=x/0.1-x

x=3.0*10^{-7}m

In conclusion, the equilibrium concentration

x=3.0*10^{-7}m

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The products of chemical reactions are made up of the atoms of the reactants.

Organic products are chemical compounds that are obtained in a reaction in which there are organic compounds or elements as reactants. The basic types of organic chemical reactions are:

To identify an organic product we must take into account that all organic chemical compounds have carbon in their composition.

Note: This question is incomplete because there is some information missing. However I can answer it based on my general prior knowledge.

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If 162.35 g aluminum hydroxide are dissolved in 6750 mL of solution, the concentration of the solution is 0.308M

The concentration of a solution can be calculated using the following formula:

Molarity = no of moles ÷ volume (L)

However, the number of moles in 162.35g of Al(OH)3 must be calculated as follows:

Molar mass of Al(OH)3 = 78g/mol

no of moles = 162.35g ÷ 78mol

no of moles = 2.08mol

Molarity = 2.08mol ÷ 6.75L

Molarity = 0.308M

Therefore, if 162.35 g aluminum hydroxide are dissolved in 6750 mL of solution, the concentration of the solution is 0.308M.

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Answer:

its axis

Explanation:

the earth rotates on its axis 24 hrs a day in relation to the sun.

Answer:

All of us are exposed to radiation every day, from natural sources such as minerals in the ground, and man-made sources such as medical x-rays. According to the National Council on Radiation Protection and Measurements (NCRP), the average annual radiation dose per person in the U.S. is 6.2 millisieverts (620 millirem).

Explanation:

Answer: Selection proper

Explanation:

it's an anti-chance process, but subject to many constraints