Ca(OH)2 viết phương trình hóa học

The following names are incorrect because they do not follow the IUPAC rules for naming alkenes:

(a) trans-3-Pentene: The correct name is (E)-2-pentene, because the double bond is at the second carbon and the higher priority groups are on opposite sides.

(b) 1,1-Dimethylethene: The correct name is prop-1-ene, because there is no need to indicate the position of the methyl groups when they are at the end of the chain.

(c) 2-Methylcyclohexene: The correct name is 1-methylcyclohex-1-ene, because the double bond and the methyl group are both at the first carbon of the ring.

(d) 4-Methylcyclobutene: The correct name is 3-methylcyclobut-1-ene, because the numbering should start from the double bond and give the lowest possible number to the methyl group.

(e) (Z)-3-Chloro-2-butene: The correct name is (Z)-2-chlorobut-2-ene, because the double bond is at the second carbon and the chlorine atom has a higher priority than the methyl group.

(f) 5,6-Dichlorocyclohexene: The correct name is 1,2-dichlorocyclohex-1-ene, because the double bond and the chlorine atoms are both at the first carbon of the ring.

IUPAC stands for International Union of Pure and Applied Chemistry. IUPAC is an international organization that aims to set standards and recommendations for the field of chemistry. IUPAC is also responsible for naming new chemical compounds and elements according to a globally agreed nomenclature system.

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Answer:

1. at least two charged interacting parts

2. from the electric fields of charged subatomic particles

3 an arrow released from the bow

4Electrical fields of charged particles interact, bonding those with opposite charges.

5 the interaction of the electric fields of protons and electrons

6 The energy stored in the system increases.

7 Kinetic energy increases because the magnets move in the direction of the field.

8 Iron pieces accelerate toward the magnet, and the energy stored in the system decreases.

9  

The energy stored in the field decreases because the magnet moves in the direction of the field.

10 The energy stored increases and then decreases.

11 The wire was not connected to the source.

12  The electromagnet will become more powerful.

From the electric fields of charged subatomic particles, at least two charged interacting pieces, an arrow launched from the bow, Interaction between electrical fields of charged particles bonds those with opposing charges, the interaction between the protons' and electrons' electric fields.

An electric field is a physical field that surrounds electrically charged particles and acts as an attractor or repellent to all other charged particles in the vicinity. It can also refer to a system of charged particles' physical field.

The area of space surrounding an electrically charged particle or object in which the charge body perceives force is known as the electric field. Examples: -Charges and their arrangements, such as capacitors and battery cells, produce electric fields.

We can produce current flow by applying the pushing force required by electric fields. A circuit's electric field resembles an electron pump in that it is a sizable source of negative charges that can drive electrons.

Thus, From the electric fields of charged subatomic particles, at least two charged interacting pieces.

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For n=1, ∫Ψ* Ψ d³x = 1

The ground state wavefunction of hydrogen satisfies the normalization condition ∫Ψ* Ψ d³x = 1.

To show that the ground state hydrogen wavefunction is properly normalized, we need to calculate the integral of the wavefunction squared, Ψ², over all space and demonstrate that it equals 1.

The ground state wavefunction of hydrogen is given by:

Ψ(r) = (1/√πa₀³) \(e^(^-^r^/^a^_0)\)

where a₀ is the Bohr radius.

To show normalization, we evaluate the integral:

∫ Ψ*(r) Ψ(r) d³r

where Ψ*(r) represents the complex conjugate of Ψ(r).

Substituting the expression for Ψ(r), we have:

∫ (1/√πa₀³) \(e^(^-^r^/^a^_0)\)      (1/√πa₀³) \(e^(^-^r^/^a^_0)\) d³r

Expanding the product and rearranging the terms, we get:

(1/π²a₀⁶) ∫ \(e^(^-^2^r^/^a^_0)\) d³r

The integral represents the volume integral over all space, so we can rewrite it as:

(1/π²a₀⁶) ∫∫∫  \(e^(^-^2^r^/^a^_0)\) dxdydz

Since the wavefunction is spherically symmetric, we can use spherical coordinates for the integral. The volume element in spherical coordinates is given by r² sin(θ) dr dθ dφ.

Therefore, the integral becomes:

(1/π²a₀⁶) ∫∫∫  \(e^(^-^2^r^/^a^_0)\) r² sin(θ) dr dθ dφ

To solve the integral, we perform the integration in each coordinate:

∫∫∫  \(e^(^-^2^r^/^a^_0)\) r² sin(θ) dr dθ dφ = ∫ [0,∞]  \(e^(^-^2^r^/^a^_0)\) r² dr ∫ [0,π] sin(θ) dθ ∫ [0,2π] dφ

The φ integral gives 2π, and the θ integral gives 2.

∫ [0,∞]  \(e^(^-^2^r^/^a^_0)\) r² dr = (\(-a_0^3^/^8\)) [ \(e^(^-^2^r^/^a^_0)\) (2r² + 2r\(a_0\) + \(a_0^2\))]

Evaluating this integral from 0 to ∞ gives a_0^3/8.

Thus, the integral becomes:

(1/π²a₀⁶) (\(-a_0^3^/^8\)) (2)(2π)

Simplifying, we get:

(1/π²a₀⁶) (\(a_0^3\)/4π)

The π terms cancel out, and we are left with:

1/(2\(a_0^3\) )

This value is equal to 1, confirming that the ground state hydrogen wavefunction is properly normalized.

Therefore, the ground state wavefunction of hydrogen satisfies the normalization condition ∫Ψ* Ψ d³x = 1, demonstrating that it is properly normalized.

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The noble gas with a molar mass of 80.0 g/mol is Krypton (Kr).

To find the molar mass of the noble gas, follow these steps:

1. Convert the given pressure to atmospheres: 758 mm Hg × (1 atm / 760 mm Hg) = 0.998 atm.
2. Convert the given temperature to Kelvin: 23.0 °C + 273.15 = 296.15 K.
3. Use the ideal gas law equation, PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant (0.08206 L atm / mol K), and T is the temperature.
4. Rearrange the equation to solve for n: n = PV / RT.
5. Plug in the given values: n = (0.998 atm × 40.75 L) / (0.08206 L atm / mol K × 296.15 K) = 1.7515 mol.
6. Calculate the molar mass by dividing the mass of the gas by the number of moles: Molar mass = 140.1 g / 1.7515 mol = 80.0 g/mol (rounded to 3 significant figures).

The noble gas with a molar mass of 80.0 g/mol is Krypton (Kr).

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Answer:

Hydrogen Bonds

hope this helps

~Savannah :))

According to the forces of attraction,   hydrogen bonds is the most  significant force that attracts water molecules to each other.

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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If the speed of every gas molecule in the sample is doubled, then the new temperature of the gas is 80K.

Speed of any molecule of gas is measured in terms of velocity and relation between root mean square velocity and temperature will be calculated as:

V = √3RT/M

Means velocity is directly proportional to the square root of the temperature, and for this question required equation is:

V₁/V₂ = √T₁/T₂

If velocity of the molecule is gets double then equation becomes,

V₁/2V₁ = √200/T₂

T₂ = 800K

Hence resultant temperature of gas is 800K.

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Answer:

C. Decrease the pressure of Gas A and increase the temperature of Gas B.

Explanation:

The values for standard temperature and pressure (STP) are zero degrees Celsius and one atmosphere. Since the temperature of gas A is higher than zero degrees, it will have to be reduced. Since the pressure of gas B is less than one atmosphere, it will have to be increased.

The subscript 4 in [Cu(NH3)4]2+ indicates the B)coordination number of Cu2+.

Coordination number refers to the number of ligands attached to the central metal ion in a coordination complex. In the given complex, Cu2+ is the central metal ion and it is coordinated to four ammonia (NH3) ligands.

The subscript 4 in [Cu(NH3)4]2+ indicates the number of NH3 ligands attached to the Cu2+ ion, which is the coordination number of Cu2+. The oxidation number of Cu in this complex is +2, which is indicated by the Roman numeral II in the formula. Therefore, the correct answer is B.

Answer: A the location of atoms, groups, or ions relative to one another and the number, type, and location of covalent bonds

Explanation: I just took the assessment and in my notebook molecular structure has a definition that is literally answer A. Also I got it right lol.

Step 1 - Finding the molar mass of glycine

The molar mass of glycine can be found by multiplying the molar mass of each element by the number of times it appears in the formula and then summing it all up.

For glycine, we find the molar mass of 75.07 g/mol.

Step 2 - Interpreting the meaning of molar mass

The molar mass gives us the total mass of one mole of that substance. Let's take water as an example: its molar mass is 18 g/mol, which means one mole of water would weight 18 g, two moles 36 g and so on.

For glycine, therefore, one mole weights 75.05 g.

Step 3 - Finding the number of moles

To find the number of moles, we can use a very simple formula relating mass (m), molar mass (M) and number of moles (n):

Therefore, there are 1.77*10^(-2) moles in 1.332 g of glycine.

If more \(H_{2}\) and \(N_{2}\) are added to the reaction 3\(H_{2}\) + N2 → 2\(NH_{3}\) after it reaches equilibrium, two events will occur Shift in Equilibrium and Increased Yield of \(NH_{3}\)

1. Shift in Equilibrium: According to Le Chatelier's principle, when additional reactants are added, the equilibrium will shift in the forward direction to consume the added reactants and establish a new equilibrium. In this case, more \(NH_{3}\) will be produced to counteract the increase in \(H_{2}\) and \(N_{2}\).

2. Increased Yield of \(NH_{3}\): The shift in equilibrium towards the forward reaction will result in an increased yield of \(NH_{3}\). As more \(H_{2}\) and \(N_{2}\) are added, the reaction will favor the production of \(NH_{3}\) to maintain equilibrium. This will lead to an increase in the concentration of \(NH_{3}\) compared to the initial equilibrium state.

It is important to note that the equilibrium position will ultimately depend on factors such as the concentrations of \(H_{2}\), \(N_{2}\), and \(NH_{3}\), as well as the temperature and pressure of the system. By adding more reactants, the equilibrium will adjust to achieve a new balance, favoring the formation of more \(NH_{3}\).

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Explanation:

I hope it helps

ya welcome

Answer:

0,005 M

Explanation:

Dado que:

Concentración de ácido (CA) = lo desconocido

Volumen de ácido (VB) = 10ml

concentración de base (CB) = 0.01 M

Volumen de base (VB) = 5 ml

Número de moles de ácido (NA) = 1

Número de moles de base (NB) = 1

Desde;

CAVA / CBVB = NA / NB

CAVANB = CBVBNA

CA = CBVBNA / VANB

CA = 0.01 × 5 × 1/10 × 1

CA = 0,005 M

2 ICl (g) <=====> I2 (g) + Cl2 (g)

Inicial: 0.682 g 0 0

(first we have only ICl, it doesn't react yet)

When reaction takes place: -2.x +x +x

(x is the amount that reacts,

e.g. -2 . x is the amount of ICl

that is consumed, for I2 and Cl2

we call +x because they are products)

Then in equilibrium:

First, we calculate molarity M

ICL = g/molecular mass . V(L) = 0.682 g/(162.35 g/mol . 0.625 L)=6.72x10^-3M

I2 = 0.0383 g / (253.80 g/mol . 0.625 L) = 2.41x10^-4 M

Remember everything is in the same volume

2 ICl (g) <=====> I2 (g) + Cl2 (g)

Inicial: 6.72x10^-3M 0 0

Reaction takes place: -2.x x x

Equilibrium: 6.72x10^-3M-2.x x x=2.41x10^-4M

Kc = 8.64x10^-6

Arachidonic acid is a polyunsaturated fat that has 20 carbons and 4 double bonds, and its shorthand notation is (20:4). In this notation, the first number (20) indicates the number of carbons, and the second number (4) represents the number of double bonds.

Therefore, to write the molecular formula of arachidonic acid, we need to know the chemical formula of a fatty acid with 20 carbons and 4 double bonds. To do that, we start with a fatty acid with 20 carbons, which is an unbranched chain with the formula C19H39COOH. Then, we need to introduce the double bonds into the chain, starting at the methyl (CH3) end of the chain.

The shorthand (20:4) indicates that there are four double bonds, so we need to replace four of the carbon-hydrogen (C-H) bonds with carbon-carbon double bonds (C=C). The double bonds are introduced at the following positions: the fifth, eighth, eleventh, and fourteenth carbon atoms. The resulting molecular formula for arachidonic acid is:C19H31COOHC=C-C=C-C=C-COOH. Therefore, the molecular formula of arachidonic acid is C20H32O2.

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According to the standard reduction potential table, metals that are located higher in the table have a greater tendency to undergo reduction and therefore can spontaneously reduce ions of metals that are located lower in the table.

In this case, Pb2+ is the ion of lead, and metals that are located higher than lead in the table can spontaneously reduce it.

Aluminum (Al), zinc (Zn), and iron (Fe) are located higher than lead in the table and can spontaneously reduce Pb2+. Therefore, any of these metals would spontaneously reduce Pb2+.

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Answer: Listen to the story. Some predators, like lions, can benefit from drought conditions. During drought, many prey species die, providing a banquet of sorts for larger animals. A deep and prolonged drought has been painful for people across the whole of southern Africa.

The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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Answer:

Steam is an invisible gas

Explanation:

so A. Gas

Answer:

gas

Explanation:

Answer:

The second one resprents a chemical change because a chemical change is when a new substances is combined with the other substances to form a new substances

Explanation:

The diagram with the orange and grey in the middle plus the orange and white that is what the other substance created.

Answer:

Protons

Neutrons

Electrons

Explanation:

Lavoisier believed in the caloric theory.

Caloric was a self-repelling fragment that adhered to matter. The heat was a mysterious fluid stored in the matter and liberate during burning and chemical reactions. Heat walk to cold. Hot objects had caloric and cold had little caloric.

The caloric theory is a disused scientific theory that heat consists of a self-resistant fluid called caloric that flows from hotter bodies to colder bodies. Caloric was also the notion of a weightless gas that could pass in and out of pores in solids and liquids.

So we can conclude that Caloric theory The caloric theory is an outworn scientific theory that heat consists of a fluid called caloric.

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Plants use carbon to build leaves and stems, which are then digested and used for cellular growth by animals. Carbon is stored in the atmosphere as gases such as carbon dioxide. It is also stored in the oceans, where it is captured by a variety of marine organisms.

A heterotroph is an organism that, unlike an autotroph, cannot fix carbon and instead grows on organic carbon.

Carbon dioxide is pulled from the air by photosynthesis to produce carbon-based food for plant growth. Carbon is transferred from plants to animals.

Carbon from plants moves through food chains to the animals that eat them. Animals that eat other animals absorb carbon from their food as well.

Thus, Organic molecules produced by photosynthesizes are consumed by food chains, and cellular respiration converts the organic carbon back into carbon dioxide gas.

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Answer:

Explanation:

waht is the solo0urtsin

Answer:

Its a physical change I believe

Explanation:

Answer:4.15 is already in the hundreths place so you are good!

if it was 4.155 then you would round it to 4.16 but its NOT that so the answer IS 4.15

Explanation:

The mass of coffe is 1176 g. The number of moles of caffiene is 6 moles and the number of caffiene molecules is 3.6 * 10^24 molecules

Coffe is an energy drink that is commonly made of caffiene. It is the active ingridient in coffe.

Now we have;

Volume of the coffe = 0.956 liters or 956 cm^3

density of the coffe = 1.23g/cm^3

Mass of coffe = 1.23g/cm^3 * 956 cm^3 = 1176 g

Number of moles of caffiene= mass /molar mass =   1176 g/194 g/mol = 6 moles

Now;

If 1 mole contains 6.02 * 10^23 molecules

6 moles contains 6 moles  * 6.02 * 10^23 molecules/1 mole

= 3.6 * 10^24 molecules

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