Boyles Law-
Variables that change:
Variables that remain constant:
Charles Law-
Variables that change:
Variables that remain constant:

Answer:

B

Explanation:

I believe it is compound B, because ionic compounds can form crystals, and they can conduct electricity when dissolved in water.

I hope it helps!!

Compound B is an ionic compound as it is hard,brittle and conducts electricity.

Ionic compound or electrovalent compound is a type of compound which is formed between two elements when there is an exchange of electrons which takes place between  the atoms resulting in the formation of ions.

When the atom looses an electron it develops a positive charge and forms an ion called the cation while the other atom gains the electron and develops a negative charge  and forms an ion called the anion.

As the two atoms are oppositely charged they attract each other which results in the formation of a bond called the ionic bond.They are hard, malleable, ductile and good conductors of heat and electricity.They have high boiling points.

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Answer:

The heaviest element to be created by exothermic nuclear fusion is Iron

Explanation:

Because it is the heaviest element produced during fusion without having to add energy, and it is the lightest element produced during fission without having to add energy. Energy-wise, everything in the universe wants to be iron! Iron is the most abundant element on Earth, making up 34.5 percent of Earth's mass.

Answer:  30 L

Explanation:  Use the combined gas law:  P1V1/T1 = P2V2/T2

We want V2, so rearrange:

V2 = V1(T2/T1)(P1/P2)

Note how I've grouped the temperature and pressure into ratios.  This allows us to cancle those units quickly and gives a perspective on what we should expect.  Enter the data:

V2 = (23L)*(0.6667)*(0.8571)

V2 = 29.6 L  30 L for 2 sig figs

The initial electron in the "K" shell has the following four quantum numbers: n = 1, s = 0, m = 0, and s = +1/2.

Looking at the period (numbered row) of the element on the periodic table will reveal the principal quantum number. The basic quantum numbers and period numbers of the electrons in the S-block and P-block are the same. Period minus 1 is the primary quantum number of electrons in the D-block.

The primary quantum number (n), the orbital angular momentum quantum number (l), the magnetic quantum number (ml), and the electron spin quantum number are the four quantum numbers that make up an atom (ms).

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The valence electron determines whether an ionic or covalent bond develops between two atoms.

An atom's outer shell electrons, known as valence electrons, can take a role in the creation of chemical bonds. When two atoms establish a single covalent bond, normally, both atoms contribute one valence electron to create a shared pair.

Ionic bonds, also known as electrovalent bonds, are a type of linkage created in a chemical molecule by the electrostatic attraction of ions with opposing charges. When one atom's valence (outermost) electrons are permanently transferred to another atom, a bond of this kind is created. The one or two and three are lost and gained in ionic bond formation, but particles with four valence electrons are neither lost nor gained. The four electrons are generally shared to form a covalent bond.

Hence, the valence electron decides the type of the bond.

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Answer:

Explanation:

THE BEST ANSWER IS CCC

An average quality lawn can capture approximately 4 times the carbon output of a typical gasoline-powered mower. This calculation takes into account the process of photosynthesis, where plants absorb carbon dioxide (CO2) from the atmosphere and convert it into oxygen (O2) and organic compounds through the use of sunlight.

During photosynthesis, plants take in CO2 and release O2, effectively reducing the amount of CO2 in the atmosphere. This carbon capture process is vital for mitigating climate change and reducing greenhouse gas emissions. Lawns, being comprised of grass and other vegetation, contribute to this carbon capture.

On the other hand, a typical gasoline-powered mower emits CO2 as a byproduct of combustion. The emissions from the mower add to the overall carbon footprint associated with lawn maintenance.

By comparing the carbon capture capacity of an average quality lawn to the carbon emissions of a typical gasoline-powered mower, it is estimated that the lawn can capture approximately 4 times the amount of carbon emitted by the mower. This estimate emphasizes the importance of maintaining and promoting healthy lawns as a means to counteract carbon emissions and contribute to environmental sustainability.

In conclusion, an average quality lawn can capture around 8 times the carbon output of a typical gasoline-powered mower, primarily through the process of photosynthesis.

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Some of the properties are:

1. Gamma, γ-rays are not deflected by electric and magnetic fields. It shows that they do not have any charge.

2. Gamma, γ-rays are electromagnetic waves like X-rays. The wavelength of γ-ray photon is smaller than that of X-rays.

3. The rest mass of a Gamma, γ-ray photon is zero. (Photon has mass zero but it has momentum, why?)

4. Gamma, γ-rays travel with the speed of light.

5. Gamma, γ-rays have very large penetrating power. They can pass through several centimeter of iron and lead.

6. Gamma, γ-rays can produce fluorescene in a substance like willimite.

Explanation:

According to Charles law : V/T=k (constant).

the volume temperature relationship will be

V/T = 117.5/25 = 4.7

hope this helps you.

They burn fossil fuels, which releases huge amounts of sulfur dioxide and nitrogen oxide that pollute the air. ... Two thirds of all sulfur dioxide and more than one third of all nitrogen oxides that pollute the air.

Potassium hydrogen phthalate is primary standard.

When standardizing a strong base titrant, the potassium hydrogen phthalate, or KHP, is frequently utilized as the principal standard.

The most typical application of phenolphthalein indicator occurs in titrations where KHP is employed as such an acidimetric standard to also standardize base solution.

An exceedingly pure, stable, devoid of water or hydration, high molecular weight reagent is just a fundamental standard. Sodium carbonate, potassium hydrogen iodate, potassium dichromate, oxalic acid, and various others are some primary standards.

Therefore, Potassium hydrogen phthalate is primary standard.

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The two forms of oxygen 16 and oxygen 18 are isotopes.

An isotope is a type of atom that has the same number of protons as another atom of the same element but a different number of neutrons. An isotope is identified by the number of neutrons in the nucleus.Both oxygen-16 and oxygen-18 are isotopes of oxygen. Oxygen-16 has eight neutrons and eight protons in its nucleus. Oxygen-18 has ten neutrons and eight protons in its nucleus.

The difference in the number of neutrons between oxygen-16 and oxygen-18 gives them slightly different chemical and physical properties. For example, oxygen-18 is slightly heavier than oxygen-16, and it has a slightly lower boiling point. However, the two isotopes are chemically similar, and they can be used interchangeably in most chemical reactions.

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Answer:

The bond order is 1.091

Explanation:

there really is no explanation.

The formula mass of rubidium carbonate is rb2co3. Then  formula mass is  230.95a mu.

\($\text { Wt } \text { of } R b & =85.4678$\)

\($\text { Wt } \text { of } c & =12.0107$\)

\($\text { Wt } \text { of } 0 & =16 $\)

\($\text { Wt } \text { of } R b_2 \omega_3 & =85.4678 \times 2+12.0107+16 \times 3$\)

=230.946

so formula mass =230.95a mu.

The mass of a substance is given in atomic mass units and is calculated by adding the average atomic masses of all the atoms in the substance's chemical formula. The molecular mass is another name for a covalent compound's formula mass.

The total atomic masses of the component atoms of an ionic compound are used to define a substance's formula mass. This is typically used for ionic compounds, which are made up entirely of ions rather than distinct molecules. By summing the masses of each individual atom in the compound's formula, the formula mass is determined.

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Speed in meters per second:  = 1.1117 m/s . Speed in miles per hour

1) a) 120 × 6000 = 720000 = 7.2 × 10⁵b) 3000000 ÷ 0.00015

= 20000000000 = 2 × 10¹⁰2)

Volume of a liter = 1000 cubic cm = 1 cubic decimeter 1 cubic meter = 1000 cubic decimeters

1 liter = 1000 cubic centimeters

1 liter = 0.001 cubic meters

3) 1 km/h = 0.27778 m/s

So, 90 km/h = 25 m/s1 mile = 1.60934 km1 km = 1000 m1 hour = 60 minutes

So, 90 km/h = 55.92 mph4) a) 36.5 fathoms/min = 219 ft/min = 3.65 ft/s 1 ft = 0.3048 m 3.65 ft/s = 1.1117 m/s

b) 1 mile = 5280 ft

1 hour = 60 minutes

36.5 fathoms/minute

= 219 ft/minute

= 3.65 ft/second

= 2.4773 miles/hour

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Answer:

20g

Explanation:

Let's review the formula to find the mass of an object: M = V * D

M = 5 g/ml * 4ml

(We can think of g/ml * ml as \(\frac{g}{ml}\)*ml, so the ml cancels out, just leaving g)

M = 20g

Hope this helped! Let me know if you need anymore clarification

The volume of a 0323 mol sample of a gas at 265 k and 0.9 atm is calculated to be 0.802 L or 802 mL.

Given: No. of moles (n) = 0.0323molPressure (P) = 0.9 atm Temperature (T) = 265KV = ? (Volume)

Formula used: Ideal gas equation PV = nRT where, P = pressure V = volume T = temperature n = number of moles

R = gas constant = 0.0821 Latm/molK

First, let's calculate the value of R.R = PV/nTR = (0.9 atm) V/(0.0323 mol × 265 K)R = 2.052/V

We will now use the value of R to calculate the volume of the given gas.

V = nRT/PV = (0.0323 mol × 0.0821 Latm/molK × 265 K)/0.9 atmV = 0.802 L or 802 mL

Therefore, the volume of the gas is 0.802 L or 802 mL.

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Answer:

1.66mol/L remain

Explanation:

Based on the reaction:

2 SO2(g) + O2(g) ⇄ 2 SO3(g) ∆H = −197.8 kJ

2 moles of SO2 react per mole of oxygen. To find the concentration of SO2 we need to see the moles of SO2 that react to find thus moles of oxygen that react and the moles and concentration of O2 that remains in the equilibrium:

Moles SO2 that remain:

1.32mol /L = 1.32moles of SO2 remains

2.60 initial moles - 1.32moles that remains = 1.28 moles of SO2 react

Moles O2 that reacted:

1.28 moles SO2  * (1mol O2 / 2mol SO2) = 0.64 moles O2

Moles O2 that remain:

2.30 moles O2 - 0.64 moles = 1.66 moles remain

And concentration is:

1.66moles / 1L =

It is true that methane, which is a greenhouse gas and contributes to global warming.

A greenhouse gas is a gas that absorbs and emits radiant energy within the thermal infrared range.

Global warming is rise in the average temperature of the Earth's climate system.

Most often greenhouse gases are carbon dioxide (CO₂) and methane (molecular formula CH₄). These gases come from burning multiple substances: coal, petroleum, plastic and natural gas.

Balanced chemical reaction of combustion of methane:

CH₄ + 2O₂ → CO₂ + 2H₂O

Greenhouse gases are so difficult to measure, because carbone dioxide, methane, chlorofluorocarbons comes from multiple sources, some of which are relatively hard to measure.

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Answer:

It's true

Explanation:

Took the test

Answer:

Plastilina inteligente. Cambia de color en función de la temperatura ambiental. ...

Plastilina vegetal. ...

Plastilina para bebés. ...

Plastilina mágica. ...

Plastilina sin gluten. ...

Plastilina gris. ...

Plastilina magnética. ...

Plastilina Slime.

Explanation:

1) There is a new product on the right hand side

2) Magnesium and oxygen

3) The stoichiometric coefficient of the reactants

4) The number of atoms of each of the elements in the molecule

5) At the start of the reaction, the elements are isolated while at the end of the reaction, the elements are combined.

We have to note that when we talk about a chemical reaction we mean the combination of two or more substances so that we can be able to get a product that is different from the reactants.

in this case, we can see that the reaction that has taken place is the combination of the oxygen molecule and the magnesium atom so as to give the magnesium oxide compound.

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The given redox reaction is:

Cr2O7^2- + C2H4O → C2H4O2 + Cr3+

To balance this reaction, we first balance the oxygen atoms by adding H2O on the right side of the equation. The number of H2O molecules added depends on the number of oxygen atoms needed. In this case, we need three O atoms on the right side, so we add three H2O molecules to the right side of the equation:

Cr2O7^2- + C2H4O → C2H4O2 + Cr3+ + 3H2O

Next, we balance the hydrogen atoms by adding H+ ions on the left side of the equation. The number of H+ ions added depends on the number of hydrogen atoms needed. In this case, we need eight H atoms on the left side, so we add eight H+ ions to the left side of the equation:

Cr2O7^2- + C2H4O + 8H+ → C2H4O2 + Cr3+ + 3H2O

Finally, we balance the charge by adding electrons. The number of electrons added depends on the difference in charge on the left and right side of the equation. In this case, the left side has a charge of -2 (from the Cr2O7^2- ion), while the right side has a charge of +3 (from the Cr3+ ion). This means that we need to add 5 electrons to the left side of the equation to balance the charge:

Cr2O7^2- + C2H4O + 8H+ + 5e- → C2H4O2 + Cr3+ + 3H2O

Therefore, the coefficient for water molecules in the balanced version of the given redox reaction is 3.

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Water vapor is formed through a process called evaporation.

When water is heated, the molecules gain energy and become more active. This causes some of the water molecules to escape from the liquid phase and enter the gas phase, forming water vapor.

This process occurs naturally in various bodies of water, such as oceans, lakes, and rivers, as well as in plants through a process called transpiration.

Water vapor in the atmosphere can then condense to form clouds, and when these droplets become large enough, they fall as rain.

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Water vapor is formed through a process called evaporation.

When water is heated, the molecules gain energy and become more active. Some of these molecules gain enough energy to break free from the liquid and escape into the air as water vapor.

This process occurs naturally in bodies of water, such as oceans, lakes, and rivers, as well as on a smaller scale, like when water evaporates from a puddle or a wet surface.

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Covalent radius refers to covalently bonded atoms while atomic radius refers to non-bonded atoms.

There are two terms that are easily confused for each other in chemistry, these are the covalent radius and atomic radius. Covalent radius refers to covalently bonded atoms while atomic radius refers to non-bonded atoms.

Hence, half the distance between the nuclei of two covalently bonded atoms is the covalent radius, whereas half the shortest distance between the nuclei of identical nonbonded atoms is the atomic radius.

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Molality of a solution is defined as the number of moles of solute per kilogram of solvent. The formula for molality is given by the following equation:molality (m) = moles of solute / mass of solvent (in kg)In order to calculate the molality of a 12 percent urea solution, we need to first determine the mass of urea present in the solution.

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The mass (in grams) of quick lime, CaO that can be produced from the reaction is 560 g

First, we shall write the balanced equation for the reaction. This is given below:

CaCO₃ -> CaO + CO₂

Now, we shall obtain the mass of quick lime, CaO produced from the reaction can be obtain as illustrated below:

CaCO₃ -> CaO + CO₂

From the balanced equation above,

100 g of limestone, CaCO₃ decomposed to produce 56 g of quick lime, CaO

Therefore,

1 Kg (i.e 1000 g) of limestone, CaCO₃ will decompose to produce = (1000 × 56) / 100 = 560 g of quick lime, CaO

Thus, the mass of quick lime, CaO produced is 560 g

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Answer:

I would have to say the answer is A) iron. I say this because Iron is one of the most well know conductors and in the chart it as rubber and copper as the two conductors whole Air and Iron should be the x. Plus the rest don't make good conductors they are more insulators. So logicaly it wouldn't make sense to have any of the other answers.

Explanation:

Hope This Helps

Have A Great Day

~Zero~

According to the concept of conduction, iron  belongs in the area marked with an X.

Conduction is defined as a process as a means of which heat is transferred from the hotter end of the body to it's cooler end.Heat flows spontaneously from a body which is hot to a body which is cold.

In the process of conduction,heat flow is within the body and through itself.In solids the conduction of heat is due to the vibrations and collisions of molecules while in liquids and gases it is due to the random motion of the molecules .

When conduction takes place, heat is usually transferred from one molecule to another as they are in direct contact with each other.There are 2 types of conduction:1) steady state conduction 2) transient conduction.According to the type of energy conduction is of three types:

1) heat conduction

2) electrical conduction

3)sound conduction

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Acids can be reduced to aldehydes by first converting them to a functional group that is easier to reduce than an aldehyde; the functional group is called the ester.

How to convert acids to aldehydes?

Here's a step-by-step explanation:

1. Convert the carboxylic acid to an ester using an alcohol, typically in the presence of an acid catalyst.
2. Reduce the ester to an aldehyde using a reducing agent, such as diisobutylaluminum hydride (DIBAL-H) or lithium aluminum hydride (LiAlH4) in a controlled reaction.
3. Isolate the aldehyde product.

By following these steps, carboxylic acid can be effectively reduced to an aldehyde.

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