A gas with a volume of 4.0 L at a pressure of 2.02 atm is allowed to expand to a volume of 12.0
L. What is the pressure in the container if the temperature remains constant

Answer:

Water

Explanation:

It is because water can be in a solid state which is ice, liquid state which is the water and gas which is the steam that comes from water

Explanation:

water as a matter could co-exist in four forms

Answer:

1.   504.8 g Al(NO3)3

2.   14.3 moles O2

Explanation:

1.

g = moles x molar mass = 2.37 x 212.996 = 504.8 g Al(NO3)3

MM Al(NO3)3 = 212.996 g/mol

2.

moles = mass : molar mass = 456.89: 32 = 14.3 moles O2

Answer:

Al₂O₃ is the limiting reactant

Explanation:

The limiting reagent or limiting reactant in a chemical reaction is a reactant that is totally used up when the chemical reaction is completed and subsequently, the reaction stops as no more products can be formed from the excess reactant.

Equation of the the reaction reaction is given below:

3 Mg (s) + Al₂O₃ (s) ----> 3 MgO (s) + 2 Al (s)

Mole ratio of reactants from the equation shows that 3 moles of magnesium metal is required to react with 1 mole of aluminum oxide.

Molar mass of magnesium metal, Mg = 24 g/mol

Molar mass of aluminum oxide, Al₂O₃ = (27 * 2 + 16 * 3) = 102 g/mol

from the equation of reaction,  (24 * 3 g) 72 g of Mg reacts with 102 g of Al₂O₃

Given masses of reactants:

144 g of Mg = 144/24 6 moles of Mg

150 g of Al₂O₃ = 1.47 moles of Al₂O₃

Mole ratio of Mg to Al₂O₃ = 6/1.47 = 4.08 : 1

Therefore, magnesium is excess reactant while Al₂O₃ is the limiting reactant

Answer:

cell's

Explanation:

Answer:

Mass of octane needed = 49.87 g

Explanation:

Answer:

1. None of these have hydrogen bonding.

2. None of these have dipoles.

3. Bigger molecules will have stronger London dispersion forces. So I2 has the strongest forces,

and F2 will have the weakest. Correspondingly, I2 will have the highest boiling point and F2 will have the lowest boiling point.

Answer: F2, Cl2, Br2, I2

Explanation:

The order of the boiling points of the given molecules are required.

The required order is [tex]F_2,Cl_2,Br_2[/tex] and [tex]I_2[/tex].

The boiling points of the molecules are

[tex]Br_2=58.8^{\circ}\text{C}[/tex]

[tex]Cl_2=-34.04^{\circ}\text{C}[/tex]

[tex]F_2=-188.13^{\circ}\text{C}[/tex]

[tex]I_2=184.4^{\circ}\text{C}[/tex]

So, the increasing order of the boiling points are [tex]F_2,Cl_2,Br_2[/tex] and [tex]I_2[/tex].

Learn more:

https://brainly.com/question/2153588

https://brainly.com/question/7692814

The water molecule is formed by the covalent bonding between oxygen and hydrogen atoms. Therefore, option C is correct.

Covalent bonding is a type of chemical bonding that involves the sharing of electrons between two atoms. In covalent bonding, the two atoms share a pair of electrons to fill their outermost electron shell and form a stable molecule.

This type of bonding usually occurs between non-metal atoms, which have a high electronegativity and tend to attract electrons strongly. In a covalent bond, the shared electrons are attracted to the positively charged nuclei of both atoms, creating a strong bond.

The strength of the bond depends on the number of shared electrons and the distance between the nuclei. Covalent bonds can be either polar or nonpolar, depending on the electronegativity difference between the two atoms.

In water the bond is formed between oxygen atom and two hydrogen atoms. Hence, C is correct.

Find  more on covalent bonding:

https://brainly.com/question/12661797

#SPJ7

0.434 mol F

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[Given] 8.25 g F

[Solve] moles F

Step 2: Identify Conversions

[PT] Molar Mass of F - 19.00 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.434211 mol F ≈ 0.434 mol F

Answer:

The chemical formula for the ionic compound formed by Au3+ and

HSO3-compound  is Au(HSO3)3

Explanation:

The charge on Au ion is [tex]+3[/tex]

And the charge on HSO3- is [tex]-1[/tex]

Thus, the number of atoms required by HSO3- to complete its octate is 1. On the other hand Au has 3 excess ions and hence it is to be released to reach the stable state.

So three molecules of HSO3- will combine with one atom of Au 3+

Thus, the compound formed by these two is Au(HSO3)3

Answer:

5.43×10¯³² J

Explanation:

From the question given above, the following data were obtained:

Wavelength (λ) = 3.66×10⁴ hm

Energy (E) =?

Next, we shall convert 3.66×10⁴ hm to metre (m). This can be obtained as follow:

1 hm = 100 m

Therefore,

3.66×10⁴ hm = 3.66×10⁴ hm × 100 m / 1 hm

3.66×10⁴ hm = 3.66×10⁶ m

Next, we shall determine the frequency of the frequency of the photon. This can be obtained as follow:

Wavelength (λ) = 3.66×10⁶ m

Velocity (v) = 3×10⁸ m/s

Frequency (f) =?

v = λf

3×10⁸ = 3.66×10⁶ × f

Divide both side by 3.66×10⁶

f = 3×10⁸ / 3.66×10⁶

f = 81.97 Hz

Finally, we shall determine the energy of the photon. This can be obtained as follow:

Frequency (f) = 81.97 Hz

Planck's constant (h) = 6.63×10¯³⁴ Js

Energy (E) =?

E = hf

E = 6.63×10¯³⁴ × 81.97

E = 5.43×10¯³² J

Therefore, the energy of the photon is 5.43×10¯³² J

Answer:

NaO2

Explanation:

Solutions are mixtures that are homogenous and comprise solutes and solvents. Methyl alcohol will react with solid sodium chloride to form a solution. Thus, option D is correct.

The solutions are the mixtures of the solute and the solvent. The solute and the solvent are capable of forming a solution only if they both are either polar or nonpolar.

Here, chlorine is a gas, and sodium superoxide is a solid that cannot react with solid sodium chloride to make a solution and hence is eliminated. As sodium chloride is polar it cannot react with nonpolar carbon tetrachloride.

Methyl alcohol is polar and so is sodium chloride. They will react together as,

CH₃OH + NaCl → CH₃Cl + NaOH

Therefore, option D. CH₃OH will react to form a solution.

Learn more about solutions here:

https://brainly.com/question/14797683

#SPJ2

Answer:

An Arrhenius base is a compound that increases the OH − ion concentration in aqueous solution. The reaction between an Arrhenius acid and an Arrhenius base is called neutralization and results in the formation of water and a salt.

Explanation:Hope this helps :)

Answer:

Bohr's Model postulates-

I postulate - The electrons in an atom orbit around the nucleus in definite circular paths called orbits or shells.

II Postulate - Each shell or orbit represents a specific amount of energy.

III Postulate - By emitting or absorbing energy, an electron may shift from one stationary energy orbit to another.

Three main Limitations -

1- It adjusts to the hydrogen atom's spectrum but not to the spectra of other atoms.

2 - In the definition of the electron as a tiny particle that spins around the atomic nucleus, the wave properties of the electron are not described.

3- Bohr is unable to understand why classical electromagnetism is inapplicable to his model. That is why, when electrons are in a stationary orbit, they do not emit electromagnetic radiation.

Explanation:

About Bohr's postulates-

1 - The electron spins in circling circles around the nucleus, emitting no energy. The orbital angular momentum is constant in these orbits.

Only certain radii of orbits, corresponding to certain given energy levels, are required for electrons in an atom.

2- Not every orbit is possible. However, whenever an electron is in a legal orbit, it is in a state of unique and constant energy and does not emit energy (stationary energy orbit).

For example - The energies allowed for electrons in the hydrogen atom are given by the following equation: The Rydberg constant for the hydrogen atom is [tex]-2.8\times10^-^1^8[/tex] in this equation, and n = quantum number will range from 1 to ∞. For each of the values of n, the electron energies of a hydrogen atom produced by the above equation are negative. As n rises, the energy becomes less negative and thus rises.

3- By emitting or absorbing energy, an electron may shift from one stationary energy orbit to another.

The energy difference between the two states would be equal to the energy released or consumed. This energy E is in the form of a photon, and it can be measured using the following formula:

    [tex]E=h[/tex][tex]v[/tex]

E is the energy (absorbed or emitted) in this equation, and h is the Planck constant (its value is [tex]6.63\times10^-^3^4 Js[/tex]) and v denotes the frequency of light, which is calculated in 1/ s.

Answer: The term saturated solution is used in chemistry to define a solution in which no more solute can be dissolved in the solvent. It is understood that saturation of the solution has been achieved when any additional substance that is added results in a solid precipitate or is let off as a gas. hope this helps. Can u give me brainliest

Explanation:

Answer:

I can't quite understand the question well but as for a saturated solution a saturated solution is a solution in which no more solute can be added like for example if you take 100 ml water and put a lot of solute in it like sugar then there will be a point at which no more sugar can be dissolved.at this point the solution is now termed as saturated solution

Answer:

i think this is the answer you can try it tho...

Explanation:

Notice that the value 12.01 grams of natural carbon is the same as the atomic mass value (12.01 amu). It also tells us that 26.98 grams of aluminum contains exactly 6.022 x 1023 atoms of aluminum.

There are 3.524X 10 ^23 atoms of Aluminium in the can

An atom is the smallest indivisible unit of matter which forms a chemical element.

The Avogadro's number tells us number of atoms, ions, or molecules in one mole of any substance.

This number is equal to 6.02214076 × 10^23.

To find the atoms of aluminum in the can, we first convert to number of moles

Number of moles of Aluminium =Mass/Molar mass

Number of moles of Aluminium =15.8 grams/26.982 g/mol

Number of moles of Aluminium =0.5855moles

Now ,

According to  Avogadro constant is 1 mole = 6.02 x10^23

Therefore, 0.5855moles=0.5855moles x ( 6.02x 10^23)= 3.524X 10 ^23 atoms of Aluminium

Learn more on atoms and  Avogadro's number: https://brainly.com/question/9454641

Answer:

This is heating limestone

Explanation:

Process:

limestone is heated strongly. After a while, the limestone begins to go cloudy. Test tube is heated too much that it is beginning to  soften it. After removing limewater, test tube cools down, the pressure in the test tube drops and air pressure pushes the cold the liquid into the hot test tube with terrible result.

Products:

Limestone is also known as calcium carbonate and Limewater

Click on the link provided to show the video

https://youtu.be/RLL5rT_DeKc

or search heating calcium carbonate

you will find a video

Explanation:

1. It is high in sodium

2. Has low percentage of hardness minerals such as magnesium and calcium.

Answer:

-100 K

Explanation:

Kinetic energy is related to temperature. The molecules in water will move faster in warmer temperatures than in colder ones.

100 K is equal to -279.67°F (-173.15°C). So 100 K would have the lowest average kinetic energy.

Answer:

A) actual yield

Explanation:

Theoretical yield is the amount of product expected based on the stoichiomety.

Percent yield is the actual yield over the theoretical yield.

Answer: It is different.

Explanation:

kcal is math while calorie is different in nutrition.

Answer: The equilibrium constant, [tex]K_c[/tex], for the reaction is 0.061.

Explanation:

Initial concentration of [tex]PCl_5[/tex]  = [tex]\frac{\text {given mass}}{\text {Molar mass}\times Volume in L}}=\frac{12.3g}{208.2g/mol\times 1.50L}=0.039M[/tex]  

Equilibrium concentration of [tex]PCl_5[/tex] = [tex]\frac{31.8}{100}\times 0.039=0.012M[/tex]  

The given balanced equilibrium reaction is,

                            [tex]PCl_5(g)\rightleftharpoons PCl_3(g)+Cl_2(g)[/tex]

Initial conc.              0.039 M                0 M        0 M

At eqm. conc.     (0.039-x) M              (x) M   (x) M

Given : (0.039-x) = 0.012

x = 0.027

The expression for equilibrium constant for this reaction will be,

[tex]K_c=\frac{[Cl_2]\times [PCl_3]}{[PCl_5]}[/tex]

Now put all the given values in this expression, we get :

[tex]K_c=\frac{0.027\times 0.027}{0.012}=0.061[/tex]

The equilibrium constant, [tex]K_c[/tex], for the reaction is 0.061.

Answer:

(B. Plants and meat)

Explanation:

Answer: 2 copper, 2 Sulfur, 1 Magnesium, 2 Chlorine.

Explanation:

Wasn't sure if this was what you were looking for, but thought if you got the left side that was all you needed?

Answer:

1 in. =2.54 cm

3*(10^-4)*2.54=7.62*10^-4

Explanation:

Answer:

Hydrogen bonds can be intermolecular (occurring between separate molecules) or intramolecular (occurring among parts of the same molecule).

Explanation:

Hydrogen bonds can be intermolecular (occurring between separate molecules) or intramolecular (occurring among parts of the same molecule). Hope this helps.

Answer:

i think the answer is A....

Explanation:

Igneous rocks (from the Latin word for fire) form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface.