How do the Z, N, and A values compare for each pair of atoms? (a) ^3_1 H and ^3_2 He Same Z value? Same N value? Same A value?

CO₂ is a non-polar molecule. The correct answer is CO₂.

CO₂, which is carbon dioxide, is a non-polar molecule because it has a symmetrical shape and its bond dipoles cancel each other out. In CO₂, the carbon atom is bonded to two oxygen atoms. The molecule has a linear shape, with the carbon atom in the center and the oxygen atoms on either side.

The bond between the carbon atom and each oxygen atom is polar because oxygen is more electronegative than carbon, creating a partial negative charge on the oxygen atoms and a partial positive charge on the carbon atom. However, because the molecule is linear, the bond dipoles are equal in magnitude and opposite in direction, effectively canceling each other out.

This results in a non-polar molecule overall, with no permanent bond dipole moment. To summarize, CO₂ is a non-polar molecule because its bond dipoles cancel each other out due to its symmetrical linear shape. Hence, CO₂ is the correct answer.

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Answer:

Get SNS

Explanation:

Answer: The specimens appears larger with a higher magnifications because a smaller area of the object is spread out to cover the filed view of your eye.

Explanation:

The molecular formula of the unknown compound is C2H2O2.

To determine the molecular formula of the unknown compound, we need to calculate the empirical formula first and then find the multiple of its subscripts to obtain the molecular formula.

Given:

Percentage of carbon = 40.0%

Percentage of hydrogen = 6.7%

Percentage of oxygen = 53.3%

Molecular mass = 60.0 g/mol

Step 1: Convert the percentages to grams.

Assuming we have 100 grams of the compound:

Mass of carbon = 40.0 g

Mass of hydrogen = 6.7 g

Mass of oxygen = 53.3 g

Step 2: Convert the masses to moles using the molar masses of the elements.

Molar mass of carbon = 12.01 g/mol

Molar mass of hydrogen = 1.008 g/mol

Molar mass of oxygen = 16.00 g/mol

Number of moles of carbon = Mass of carbon / Molar mass of carbon

= 40.0 g / 12.01 g/mol

= 3.332 mol

Number of moles of hydrogen = Mass of hydrogen / Molar mass of hydrogen

= 6.7 g / 1.008 g/mol

= 6.648 mol

Number of moles of oxygen = Mass of oxygen / Molar mass of oxygen

= 53.3 g / 16.00 g/mol

= 3.331 mol

Step 3: Determine the empirical formula by dividing the moles by the smallest value.

Dividing the moles of carbon, hydrogen, and oxygen by 3.331 gives approximately 1 for each element.

So, the empirical formula of the compound is CHO.

Step 4: Determine the multiple of the subscripts to obtain the molecular formula.

To find the multiple, we divide the molecular mass by the empirical formula mass.

Molecular mass = 60.0 g/mol

Empirical formula mass = (12.01 g/mol) + (1.008 g/mol) + (16.00 g/mol) = 29.018 g/mol

Multiple = Molecular mass / Empirical formula mass

= 60.0 g/mol / 29.018 g/mol

= 2.07

Rounding to the nearest whole number, we get 2.

Therefore, the molecular formula of the unknown compound is C2H2O2.

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Answer:

The population size decreases because the higher on the food chain one looks, the fewer the number of organisms that occupy that level.

Explanation:

:)

According to World Population Review 2022 the safest country to live are as follows.

These countries are listed safe by calculating global peace index.

This index measures the nation's and regions peacefulness and is finally reviewed by Institute of Economic and Peace (IEP).

The role of IEP is to measure peace at the worldwide and country level degree and lets us to evaluate the social, political and financial elements that create peace. Each year the Institute for Economics and Peace produces the Global Peace Index, the world’s main degree of countrywide peacefulness, rating 163 nations in line with their ranges of peace.

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Answer:

Carbon, Hydrogen, Oxygen

Explanation:

From the prefix "macro" which means large, macromolecules are considered to be "large molecules" when compared to the micromolecules. They come in four major types: proteins, nucleic acids, carbohydrates and lipids.

These macromolecules have three common elements and these are: Carbon, Hydrogen and Oxygen. These are all essential in the vitality of life. The human body is said to have 10% of carbon and 63% oxygen. Hydrogen, on the other hand, is said to be the most abundant element among organic molecules.

The formation of Zinc sulfide from 'Zn' and 'S' is a redox reaction, because it involves both oxidation and reduction reactions. So zinc bonds with sulfur to form zinc sulfide.

The zinc sulfide also called the zincblende is a white or yellowish crystal and it is insoluble in water as well as denser than water. It is manufactured by the combustion of a mixture of zinc and sulfur.

The compound 'ZnS' decomposes in the presence of oxidizing agents and acids. The reaction is given as:

Zn + S → ZnS

The oxidation reaction is:

Zn - 2e⁻ → Zn²⁺

The reduction reaction is:

S + 2e⁻  → S⁻²

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Answer:

Sodium chloride is formed when sodium atoms interact with chlorine atoms.

Explanation:

When this occurs, sodium will donate an electron (which is a negatively-charged particle) to chlorine. This makes sodium slightly positive and chlorine slightly negative

Answer:

The answer to question 3 should be C. Summarizing the results.
The answer to question 4 should be D. Comparing data from the experiment to the prediction of the hypothesis.

Explanation:

Answer: For question 3 Your answer will be C

For question 4 your answer will be D

Explanation:

this is because this part of a scientific hypothesis and cycle.

The initial magnitude of the acceleration of the water molecule in the presence of the carbon atom is calculated in Part 1(a). The direction of the acceleration is not specified in the given question.
In Part 2(b), the question asks for the change in the magnitude of the initial acceleration when the distance between the water molecule and carbon atom is tripled.
The initial magnitude of the acceleration of the water molecule in the presence of the carbon atom is calculated in Part 1(a). The direction of the acceleration is not specified in the given question.
In Part 2(b), the question asks for the change in the magnitude of the initial acceleration when the distance between the water molecule and carbon atom is tripled.

Part 1(a): To calculate the initial magnitude of the acceleration of the water molecule, we need to consider the electric interaction between the permanent dipole moment of the water molecule and the induced dipole in the carbon atom.
However, the direction of the acceleration is not provided in the question, so we cannot determine it without additional information.

Part 2(b): If the distance between the water molecule and carbon atom is tripled while keeping the same initial conditions, the initial acceleration of the water molecule will decrease.
The exact ratio of the magnitudes of the accelerations can be determined using the inverse square law. According to the inverse square law, the force between two charged particles is inversely proportional to the square of the distance between them.
Therefore, if the distance is tripled, the force and hence the acceleration will decrease by a factor of 1/9.

In conclusion, the initial magnitude of the acceleration of the water molecule can be calculated in Part 1(a), but the direction is not given. In Part 2(b), the ratio of the magnitudes of the accelerations would be 1:9 when the distance between the water molecule and carbon atom is tripled.
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The interaction between water molecule and carbonate atom can be represented using an equation that demonstrates induced dipole-induced dipole interactions. Acceleration of water molecule can be found using the Force equation. If the distance is tripled, the acceleration of the water molecule will be 1/81 times the initial acceleration.

The forces on the water molecule and the carbon atom due to their interaction would be due to induced dipole-induced dipole interactions. This can be represented by the equation:

F = 3πε₀α p²/r⁴

Where ε₀ is the permittivity of free space, α is the polarizability, p is the dipole moment, and r is the distance between the atoms. From this, you can find the acceleration of the water molecule using the formula F = ma. For your second part, applying the same equation with a distance 3 times as far, you would find the acceleration of the water molecule to be 1/81 times the initial acceleration. This is due to the equation demonstrating an inverse fourth power relationship.

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Answer:

propane

Explanation:

propans is made up of 3 carbons and 8 hydrogens like the picture above

The structure of a molecule like CH 2O (AX 3), whose double bond repels single bonds more potently than single bonds repel each other, is given below. As a result, the geometry is not perfect.

A molecule shape's actual bond angles can differ for a variety of reasons. The size of the participating atoms, the presence of lone pairs, numerous bonds, and big groups bound to the core atom

Since a lone pair of electrons requires more space than a bonding pair does, the molecular geometry is altered to provide the lone pair with more room, which leads to narrower bond angles than in the ideal geometry.

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Only 1% of the wavelengths of visible light are absorbed by photosynthetic pigments. Photosynthesis is the process by which plants convert sunlight into usable chemical energy in the form of glucose.

However, not all wavelengths of light are equally effective at driving photosynthesis. In fact, plants are only able to use a narrow range of wavelengths that fall within the visible spectrum (400-700 nm). This is because the pigments in chloroplasts have evolved to absorb light within this range, while reflecting or transmitting light outside of it. Furthermore, the efficiency with which plants are able to convert absorbed light energy into chemical energy is relatively low. This is due to a number of factors, including losses of energy through heat dissipation, photorespiration, and inefficiencies in the carbon fixation process.

As a result, only a small fraction of the total solar radiation that strikes a plant is ultimately converted into usable chemical energy. While the exact percentage may vary depending on a variety of factors (e.g. plant species, environmental conditions), it is generally estimated to be around 1%. In contrast, a significant portion of the solar radiation that strikes a plant is either reflected or absorbed as heat energy. This is because most plant surfaces (e.g. leaves, stems) have a high albedo, or reflectivity, which causes much of the incident radiation to bounce back into the environment. Additionally, some solar energy is absorbed by non-photosynthetic tissues such as the plant's woody stem or soil. In summary, the low conversion efficiency of photosynthesis and the limited range of wavelengths that can be absorbed by chloroplasts are the main reasons why only a small fraction of the solar radiation that strikes a plant is converted into usable chemical energy.

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Answer:

Due to global warming and ocean levels rising, Earth's ocean was made up of more frozen bodies of water. I wouldn't say Earth had more or less water in the past (because where would the water have come from?) but instead the water was less accessible due to it being frozen in glaciers. Comparing the ocean from 66 million years ago to today, I'd say the water levels have definitely risen since many city are below sea level now. You could say the surface area of the ocean has increased over time.

Answer:

O Al + Mg(NO3)2 -->

Explanation:

According to the statement the movement of water will result in a concentration gradient equalizing between the two solutions.

In this situation, water molecules will move from an area of lower solute concentration (10% sucrose in the dialysis bag) to an area of higher solute concentration (20% sucrose in the solution). This is due to the process of osmosis, where water molecules move across a semipermeable membrane from an area of high water concentration to an area of low water concentration. The dialysis bag is selectively permeable to water, but not sucrose, so the net direction of movement will be water moving out of the bag and into the solution until the concentrations of water and sucrose are equal on both sides. The sucrose molecules themselves will not move across the membrane since it is not permeable to them. This process will continue until the concentration of sucrose in the bag and the solution is equal, resulting in an equilibrium state. Overall, the movement of water will result in a concentration gradient equalizing between the two solutions.

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Answer:

Block A has the greatest density.

Explanation:

Three blocks are shown: Three blocks are shown.

Block A has mass 3 kilograms, length 6 centimeters, height 4 centimeters, and width 2 centimeters.

Block B has mass 1 kilograms, length 6 centimeters, height 2 centimeters, and width 4 centimeters.

Block C has mass 2 kilograms, length 2 centimeters, height 6 centimeters, and width 4 centimeters.

Which statement is correct?

- Block A has the greatest density.

- Block B has the greatest density.

- The density of Block A is equal to the density of Block B.

- The density of Block B is equal to the density of Block C

Answer

A

Explanation

When fossil fuels are burned, they release large amounts of carbon dioxide, which is one of the most released greenhouse gasses.

Answer:

no that is not balanced again try to solve them

Answer:

a) 1.58

Explanation:

= 0.681 M Need grams of NaF



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The pH of the hydrofluoric acid solution prior to adding sodium fluoride - = 1.606 and the amount of sodium fluoride should be added to prepare the buffer solution - 35.75g or 36 g.

a) Weak acid such as hydrofluoric acid is not entirely dissociate. The capacity of dissociation of the compound will be given by it's acid dissociation constant ka

HF <==> H+ + F-

I    1.0       0     0              

C   -x       +x    +x

E   1.0-x     x     x

I = initial conc.   C = Change in conc.    E = Conc. at equilibrium

Ka =          (Ka for HF is 6.3 x 10-4 constant)

= 6.3 x 10-4 =

= 6.3 x 10-4 (1.0- x ) =

Solve for x using quadratic equation method. Neglecting negative value as concentration is always positive value

x = -0.0254 and x = 0.0248 = [H+]  

pH = - log []  

pH = - log 0.0248

= 1.606 ( pH of HF before adding NaF)

b) Given:

pH = 3.00

[HF] = 1.00 M

[F-] - ?

Solution:

a buffer follows the Henderson-Hasselbach equation:

pH = pKa + log

3.00 = 3.167 + log

log      = -0.167  

[] = (0.681) ([HF])

= (0.681) (1.00)

= 0.681 M

NaF --> + [NaF]

= 0.681 M Need grams of NaF

The amount of would be =

=

= 35.75g NaF

Thus,  the pH of the hydrofluoric acid solution prior to adding sodium fluoride - = 1.606 and the amount of sodium fluoride should be added to prepare the buffer solution - 35.75g or 36 g.

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The equation 2Al + _F₂ → 2AlF₃ is balanced by making the coefficient of fluorine, F₂ three (3)

To obtain the coefficient of fluorine, F₂ that will balanced the equation, we must obtain the balance equation.

The equation 2Al + _F₂ → 2AlF₃ can be balanced as illustrated below:

2Al + F₂ → 2AlF₃

There are 2 atoms of F on the left side and 6 atoms on the right side. It can be balanced by writing 3 before F₂ as shown below:

2Al + 3F₂ → 2AlF₃

Now, the equation is balanced.

Thus, we can conclude that the coefficient of fluorine, F₂ that balanced the equation is 3

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Answer:

I think it would be b

Explanation:

pls correct me if im wrong!

Answer:

Ea = 210.5kJ/mole

Explanation:

When the reaction:

O3 + NO → O2 + NO2

Occurs, requires 10.7kJ/mole and releases -199.8kJ/mole.

For the forward reaction:

O2 + NO2 → O3 + NO

The Ea is the sum of Ea of the forward reaction and - ΔH, that is:

Ea = Ea - (-ΔH)

Ea = 10.7kJ/mol - (-199.8kJ/mol)

Ea = 210.5kJ/mole

Answer:

Solarpannels? I honestly don't know I'm just trying to be helpful.

Mercury is in a liquid state

Mercury's melting point is somewhere around -34 Degrees Celcius. Thus it should be assumed it will be a liquid at this temperature. Not a gas however as mercury's boiling point is somewhere in the 600 Degree range

Answer:

1.

The energy lost by the water is given by:

where

m = 3.0 kg = 3000 g is the mass of water

Cs = 4.179 J/g•°C is the specific heat

is the change in temperature

Substituting,

2.

The energy added to the aluminium is given by:

where

m = 0.30 kg = 300 g is the mass of aluminium

Cs = 0.900 J/g•°C is the specific heat

is the change in temperature

Substituting,

4. 42.9 g

The mass of the water sample is given by

where

is the heat added

is the temperature change

Cs = 4.179 J/g•°C is the specific heat

5. 115.5 J

The heat used to heat the copper is given by:

where

m = 5.0 g is the mass of copper

Cs = 0.385 J/g•°C is the specific heat

is the change in temperature

6. 0.185 J/g•°C

The specific heat of iron is given by:

where

Q = -47 J is the heat released by the iron

m = 10.0 g is the mass of iron

is the change in temperature

Substituting,

Substituting,

Substituting,

Explanation: