the molar mass of magnesium is 12.00 g/mole. the molar mass of magnesium is 12.00 g/mole. true false

We can make a 0.25 M solution with a volume of 200 mL from the stock solution.

We can use the dilution formula to fix this issue:

C1V1 = C2V2

where C1 and V1 represent the initial (stock) solution's concentration and volume, and C2 and V2 represent the end (diluted) solution's concentration and volume.

In order to write: "We want to determine the volume of a 0.25 M solution that can be created from the stock solution."

C2 = 0.25 M V2 =? where C1 = 1.00 M and V1 = 50 mL.

Using the dilution formula with these values as input, we obtain:

0.25 M x V2 = 1.00 M x 50 mL

If we simplify, we get:

50 mL = 0.25 M x V2

The result of dividing both sides by 0.25 M is:

V2 = 200 mL

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Points A, D, and H are noncoplanar with points B, C, and F.

To determine which points are noncoplanar with points B, C, F, and G, we can follow these steps:

Identify the plane formed by points B, C, and F using the equation of a plane.

Substitute the coordinates of point G into the equation of the plane.

If the equation is satisfied, then point G is coplanar with points B, C, and F.

Otherwise, it is noncoplanar.

Repeat steps 2 and 3 for each of the other points (A, D, E, and H) to determine their coplanarity with B, C, and F.

Points A, D, E, and H that do not satisfy the equation of the plane are noncoplanar with points B, C, and F.

Based on the given options, points A, D, and H are noncoplanar with points B, C, and F.

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110 grams of baking soda is approximately equal to 1.31 moles.

To determine the number of moles in 110 grams of baking soda (NaHCO3), we need to use the molar mass of NaHCO3, which is calculated by adding the atomic masses of each element in the compound.

The molar mass of sodium (Na) is approximately 22.99 g/mol, the molar mass of hydrogen (H) is approximately 1.01 g/mol, the molar mass of carbon (C) is approximately 12.01 g/mol, and the molar mass of oxygen (O) is approximately 16.00 g/mol.

Now we can calculate the molar mass of NaHCO3:

Na: 1 * 22.99 g/mol = 22.99 g/mol

H: 1 * 1.01 g/mol = 1.01 g/mol

C: 1 * 12.01 g/mol = 12.01 g/mol

O: 3 * 16.00 g/mol = 48.00 g/mol

Adding these values together:

22.99 g/mol + 1.01 g/mol + 12.01 g/mol + 48.00 g/mol = 84.01 g/mol

Therefore, the molar mass of NaHCO3 is 84.01 g/mol.

To find the number of moles, we can use the formula:

moles = mass / molar mass

Substituting the given mass of 110 grams and the molar mass of 84.01 g/mol into the formula:

moles = 110 g / 84.01 g/mol ≈ 1.31 moles

Hence, 110 grams of baking soda is approximately equal to 1.31 moles.

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a.

Ionic bond is a bond in which there is complete transfer of valence electrons between atoms.

The atom that loses the valence electron is called the electron donor while the atom that accepts the electron is called the electron acceptor.

Ionic bond usually occurs between metals and non metals.

Ionic bond is a bond in which there is complete transfer of valence electrons between atoms.

b.

The force of attraction between Na⁺ and Cl⁻ forms the ionic bond.

Since the atoms are now charged, the force of attraction between them forms the ionic bond.

c.

The force of attraction between Mg²⁺ and O²⁻ forms the ionic bond.

Since the atoms are now charged, the force of attraction between them forms the ionic bond.

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An ionic or electrovalant bond is a type of chemical bond, which is formed  from two ions (charged atoms by loosing or gaining electrons) having opposite charges.

Ionic bonds are formed from the transfer of electrons from one atom to another. As the electrons are transferred there occurs a positively charged ions (cations) and a negatively charged ions (anions). These ions are held together in a crystal lattice structure by the strong electrostatic attraction between the positively charged cations and negatively charged anions.

The electrons are transferred as the atoms have tendencies to achieve a stable electronic configuration. They do this to attain a stable atomic structure. By transferring the electrons they attain their octet or duplet.

Sodium chloride(NaCl) is formed when the atom of sodium combines chemically with chlorine atom to generate an ionic compound.

Since sodium has an atomic number of 11, its electronic configuration is 2, 8, 1. There is only one electron in the outermost shell of a sodium atom. Therefore, the sodium atom gives one electron to produce the sodium ion Na⁺.

Chlorine has an atomic number of 17. Hence, its electronic configuration is 2, 8, and 7. The chlorine atom contains seven electrons in its outermost shell and requires one more electron to create the inert gas’s stable, eight-electron configuration. Consequently, a chlorine atom accepts one electron and creates the negatively charged chloride ion (Cl⁻).

When sodium interacts with chlorine, it donates its outermost electron to the chlorine atom, forming a sodium ion (Na⁺) and a chloride ion (Cl⁻) by accepting an electron. The strong electrostatic force of attraction between the newly created ions, holds sodium and chloride ions together to create sodium chloride, Na⁺Cl⁻ or NaCl.

Similarly in the case of Magnesium Oxide (MgO) is formed from the chemical interactions of Magnesium and oxygen atoms, leading to the formation of an ionic compound.

Since magnesium has an atomic number of 12, its electrical configuration is 2, 8 and 2, there is just 2 electrons in the outermost shell of a Magnesium atom. Therefore, the magnesium atom gives two electron to produce the Magnesium ion Mg²+ .

Oxygen has an atomic number of 8. Hence, its electronic configuration is 2 and 6, the oxygen atom contains 6 electrons in its outermost shell and requires 2 more electron to create the inert gas’s stable, eight-electron configuration. Consequently, a oxygen atom accepts 2 electronelectrons and creates the negatively charged oxide ion (O²-).

When magnesium interacts with oxygen, it donates its outermost electrons to the oxygen atom, generating a Magnesium ion Mg²+ .  And an oxygen ion (O²⁻) by acquiring 2 electrons. The attractive electrical force holds magnesium and oxygen   ions together to create sodium chloride,        Mg²⁺ O²⁻ or MgO.

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Answer:

Ron and Hermoine

Explanation:

They always fought over petty things, but at the end, they did end up together!

(Answer for your question about love and friendship being a central theme in Harry Potter and the Philosopher's stone)

*ALSO, MY ANSWER MIGHT BE WRONG* so be sure to use a pencil just in case!

To determine the structural formula of the original organic compound, we can follow these steps:

1. The original compound is an aromatic compound, which implies that it has a benzene ring as its core structure.

2. The compound reacts with excess bromine to form a tribromo derivative through electrophilic substitution. This means that three hydrogen atoms on the benzene ring are replaced by bromine atoms.

3. When reacted with nitrous acid, the compound forms an intermediate ionic compound that reacts with 2-naphthol to give a colored product with a molecular formula of C₁₆H₁₂N₂₀. This information suggests that the original compound has an amine group (-NH₂) that reacts with nitrous acid.

4. We can now determine the molecular formula of the original compound by subtracting the molecular formula of the product (C₁₆H₁₂N₂₀) by the formula of the 2-naphthol (C₁₀H₈₀) and the three bromine atoms that were replaced by hydrogen. This gives us C₆H₆ - 3H + NH₂ = C₆H₅NH₂.

5. The structural formula of the original organic compound is therefore C₁₆H₁₂N₂₀, which is aniline, an aromatic amine with an NH₂ group attached to the benzene ring.

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Ionization energies provide evidence for the quantization of the energies of electrons by taking a specific amount of energy to remove exactly one electron from an atom.

Quantization of energy:

An electron can radiate or absorb energy as radiations only in limited amounts or bundles called quanta. This is known as quantization energy

The formula for quantization of energy:

E = hf

E = energy

f frequency

h = plank's constant

As we know the motion of the electron in the hydrogen atom is not free. The electron is bound to the atom by the attractive force of the nucleus and consequently, quantum mechanics predicts that the total energy of the electron is quantized. There is an approximate amount of energy that is needed to overcome the attractive force between the electrons and the nucleus.

If less than the required ionization energy then the electrons can not be removed.

Therefore Ionization energies provide evidence for the quantization of the energies of electrons by taking a specific amount of energy to remove exactly one electron from an atom.

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The statement that the sodium-potassium pump uses bulk transport to move the sodium and potassium ions is false one. So, the right choice for answer is option (b).

Sodium-Potassium Pump: The sodium-potassium pump is an active transport protein that moves sodium and potassium ions across cell membranes. It is particularly important in neurons, where it establishes ion gradients that facilitate the transmission of nerve impulses. ATP acts as a solute pump, an enzyme that pumps sodium into the cell, exporting three sodium ions and two potassium ions. It is an active transport that results in the hydrolysis of ATP molecules to provide the necessary energy. Fueled by ATP, cells are constantly pumping out sodium ions and potassium ions. Sodium and potassium ions cross the cell membrane at the rate of 3 sodium ions for 2 potassium ions. Therefore, despite bulk transport, the sodium potassium pump uses active transport to move sodium and potassium ions. Thus, correct answer is option (b).

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Answer:

z+4

Explanation:

An isotope of an element, atomic number Z, has a mass number 2z+4. How many neutrons are there in the nucleus of the element?o

protons + neutrons =mass number

so

z +neutrons = 2z+4

neutrons = 2z+4 - z=z+4 which is the # of neutrons in the nucle

us

Out of the given options, the element that is least likely to be produced by nuclear fusion is chlorine. This is because nuclear fusion occurs when lighter elements combine to form heavier elements, but chlorine already has a relatively high mass compared to the other options.

Hydrogen, on the other hand, is the most common element produced by nuclear fusion as it is the simplest and lightest element.

Argon and silicon are also commonly produced in nuclear fusion reactions, with silicon being particularly important in the process of nucleosynthesis that occurs in the cores of massive stars. In summary, while all the listed elements can be produced by nuclear fusion, chlorine is the least likely to be formed through this process.

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Answer:

Which element is nuclear fusion least likely to produce?

✅ hydrogen, which has an approximate mass of 1
or A.)

❌ chlorine, which has an approximate mass of 35

❌ argon, which has an approximate mass of 39

❌ silicon, which has an approximate mass of 28

1. The mole of sugar in the pop is 0.123 mole

2. The value of the sugar in the pop is 11.07 cents

3. The number of particles of the sugar in the pop is 0.74×10²³ particles

4. The concentration of the sugar in the pop is 0.36 mol/L

Mole = mass / molar mass

Mole of sugar (C₁₂H₂₂O₁₁) = 42 / 342

Mole of sugar (C₁₂H₂₂O₁₁) = 0.123 mole

1 mole of sugar = 90 cents

Therefore,

0.123 mole of sugar = 0.123 × 90

0.123 mole of sugar = 11.07 cents

From Avogadro's hypothesis,

1 mole of sugar = 6.02×10²³ particles

Therefore,

0.123 mole of sugar = 0.123 × 6.02×10²³

0.123 mole of sugar = 0.74×10²³ particles

Concentration = mole / Volume

Concentration of sugar = 0.123 / 0.342

Concentration of sugar = 0.36 mol/L

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Answer:

See explanation

Explanation:

According to Burgess (1996); 'We don't break rules because it 'doesn't feel right' to do so. Some elements of personality can determine whether we will break rules or not, particularly when the moral/social-conventional distinction is taken into consideration'.

If an individual has the urge to behave in a manner that transgresses social rules,  personality characteristics now come into play here. Personality traits determines whether the  individual  considers him/herself as bound by the rules. Some people will follow the rules absolutely while some only follow  rules that they consider important, a small proportion will not follow any rule that prevents them from achieving their set objectives.

Famous people become carried away with affluence and position and tend to break more rules since they believe that they will always get away with it because of whom they are.

Irrespective of the circumstances, it is never worth it to break a rule. We always have to see ourselves as bound by rules as part of our social responsibility.

Answer:

The concentration is 50%

Explanation:

Mass-Volume concentration is molarity (M) times 100% or \(\frac{Gsolute}{Lsoln}\) * 100%

For this problem, we need to convert from milligrams to grams and milliliters to liters in order to plug the values into the equation and solve for the concentration.

So, 250 mg = 0.025g (there are 1000 mg in 1 g)

And 500ml = 0.05 L  (there are 1000 ml in 1 L)

Now we can solve for the concentration

\(\frac{0.025 g}{0.05 L}\) \(* 100\) %=  0.5 \(* 100\) % = 50% of Tylenol concentration

The name of the compound made of magnesium and fluorine is magnesium fluoride and its formula is MgF2. Magnesium fluoride is a white crystalline solid that has a bitter taste and is insoluble in water. Magnesium fluoride is a stable ionic compound with a high melting point.

This compound is the primary source of magnesium and fluoride ions in many industrial and chemical processes. Magnesium fluoride is produced by the reaction between magnesium oxide and hydrogen fluoride.

MgO + 2HF → MgF2 + H2O

In the laboratory, magnesium fluoride is produced by dissolving magnesium hydroxide in hydrofluoric acid.

Mg(OH)2 + 2HF → MgF2 + 2H2O

Magnesium fluoride is used in the production of ceramics and glass as a flux and to increase the resistance of the glass to attack by acids. Magnesium fluoride is also used as an optical coating on lenses and other optical components as it has a low refractive index.

Magnesium fluoride is a white crystalline solid with a bitter taste that is insoluble in water. It is the primary source of magnesium and fluoride ions in many industrial and chemical processes. The formula of magnesium fluoride is MgF2. It is used in the production of ceramics and glass as a flux and to increase the resistance of the glass to attack by acids. Magnesium fluoride is also used as an optical coating on lenses and other optical components as it has a low refractive index.

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Answer:

Answer:

He could separate the mixture through filtration and fractional crystallization. Ethanol can also be added in order to remove salt.

The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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DA = 13, BW = 5, WC = 12, ∠ACD = 25°, ∠DAB = 50°, ∠ADC = 130°, ∠DBC = 65° and ∠BWC = 90° given that ABCD is a rhombus and DB = 10, BC = 13, ∠WAD = 25°. This can be obtained by understanding the properties of a rhombus.

Here in the question it is given that,

We have to find the values of DA, BW, WC, ∠BAC, ∠ACD, ∠DAB, ∠ADC, ∠DBC, ∠BWC.

1) Since all the sides of the rhombus are equal, DA = 13

2) Since diagonals are perpendicular bisectors of each other, BW = 5

3) Since formula of diagonal is,

d₁ = √4a² - d₂,

here a = 13, d₂ = 10

d₁ = √4×13² - 10

d₁ = √676 - 10 = √576 = 24

Since diagonals are perpendicular bisectors of each other

WC = 24/2  ⇒ WC = 12

4) Since diagonals are angle bisectors at the corners, ∠BAC = 25°

5) Since diagonals are angle bisectors at the corners,

∠BAW = ∠DAW = 25° ⇒ ∠BAD =∠BAW + ∠DAW = 25° + 25° ⇒∠BAD = 50°

Since opposite angles of the rhombus are equal,

∠BAD = ∠BCD = 50° ⇒ ∠BCW = ∠DCW = 25°

⇒ ∠ACD = 25°

6) Since diagonals are angle bisectors at the corners,∠BAW = ∠DAW = 25° ⇒ ∠BAD =∠BAW + ∠DAW = 25° + 25° ⇒∠BAD = 50°

⇒ ∠DAB = 50°

7) Since adjacent angles are supplementary angles,

∠BAD + ∠ADC = 180° ⇒ 50° + ∠ADC = 180° ⇒ ∠ADC = 180° - 50° = 130°

⇒ ∠ADC = 130°

8) Since diagonals are angle bisectors at the corners,

∠DBC = 130°/2

⇒ ∠DBC = 65°

9) Since all the sides make an angle of 90° at the center,

⇒ ∠BWC = 90°

Hence DA = 13, BW = 5, WC = 12, ∠ACD = 25°, ∠DAB = 50°, ∠ADC = 130°, ∠DBC = 65° and ∠BWC = 90° given that ABCD is a rhombus and DB = 10, BC = 13, ∠WAD = 25°.

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Answer:

hope the answer helps you

Explanation:

3 ethyl 2 hexene

plzz give me brainliest

By the IUPAC Naming Convention followed by every chemical standards, the structure from the question is named as 4,4-dimethyl heptane.

IUPAC Stands for International Union of Pure and Applied Chemistry.This organisation issued some standards for naming any chemical components that is followed world wide.

According to the IUPAC Standards:

First of all we have to identify the longest carbon chain which is an alkane group according to this question.As a result of 7 carbon linked with single bonds it will be named heptane.Now moving to the other parts:

\(-CH3\) is termed as methyl

As the both the methyl group( \(-CH3\)  ) is linked with the fourth carbon the numbering is 4 for methyl.So,the IUPAC name of this compound in the image is 4,4-dimethyl heptane.

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the real gas pressure for above question was 91.4atm

what is van der waals equatio?

The Van der Waals equation (or Van der Waals equation of state) is an equation of state used in chemistry and thermodynamics that extends the ideal gas law to take into account the effects of interactions between molecules in a gas as well as accounting for the finite size of the molecules.

The ideal gas law views gas molecules as point particles that interact only with their surroundings and not with one another, which means that when they collide, they do not occupy any space or change their kinetic energy.

The volume V occupied by n moles of any gas has a pressure P at a temperature T determined by the following relationship, according to the ideal gas law, where R is the gas constant:

PV=nRT

(pxn2a/v2) (v-nb)=nRt

p 10x1.36/2.41x2.41-10x0.0318

p 13.6/2.41x2.092

nRt=p2.69

10x0.08206x300/2.69

=91.4atm

therefore the real gas pressure =91.4atm

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The new rate of the modified reaction will be 44mmmM/s which can be calculated by the rate of disappearance.

For this response, the rate of disappearance was calculated. The concentration will drop as it is consumed. After 54 minutes, the concentration dropped to 1.58 molar.

What is the reaction's speed?

Units are a way to express the reaction rate. HCl is characterized by a change in polarity of the compound per unit of time or per change in time. We have 1.85 Molar moving to 1.58 Molar in 54 minutes. Ten times as much negative three molar HCl would be produced each minute. People should subtract the initial polarity from the end one to do it correctly.

Because of the drug's concentration, we experience a negative rate of reaction. The fact that the rate is negative indicates that we are consuming.

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The amount of energy required to raise the temperature of a 53.5 g sample of gold from 23.0 °C to 100.0 °C is 14.5 kJ. We will use the following formula for calculating the energy required to raise the temperature of a substance: Q = m × c × ΔTwhereQ = energy m = mass c = specific heat capacityΔT = change in temperature We are given: m = 53.5 g c = 0.0308 cal /g°CΔT = (100.0 - 23.0) = 77.0 °C (Note that we have converted the temperature difference from Celsius to Kelvin, as the unit of specific heat used in the formula is Joule per Kelvin.)

Now, we will substitute the given values into the formula and solve for Q:Q = 53.5 g × 0.0308 cal/g°C × 77.0°C= 123.93 cal

Next, we will convert the unit of energy from calories to kilojoules:1 cal = 4.184 J (definition)1 kJ = 1000 J

Therefore,1 cal = 4.184/1000 kJ1 cal = 0.004184 kJHence,123.93 cal = 123.93 × 0.004184 kJ = 0.518 kJ

Therefore, the amount of energy required to raise the temperature of the gold sample from 23.0°C to 100.0°C is 0.518 kJ (to three significant figures).

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Answer:

1. Hydrogen ions; acidic

2. Alkali; hydroxide ions; alkaline

3a. Sulfuric acid --> 2 Hydrogen ions + sulfate ion

H₂SO₄ --> 2H+ + SO₄²-

3b. Sodium hydroxide --> Sodium ion + Hydroxide ion

NaOH --> Na+ + OH-

Explanation:

1. Sulfuric acid releases hydrogen ions in solution. This makes the solution acidic.

Acids produce hydrogen ions when dissolved in aqueous solutions.

2. Sodium hydroxide is an alkali. It releases hydroxide ions in solution. This makes the solution alkaline.

Alkalis are soluble bases that produce hydroxide ions in solution.

3a. Sulfuric acid --> 2 Hydrogen ions + sulfate ions

H₂SO₄ --> 2H+ + SO₄²-

The equation above is for the ionization of sulfuric acid

b. Sodium hydroxide --> Sodium ion + Hydroxide ion

NaOH --> Na+ + OH-

The equation above is for the ionization of sodium hydroxide

Answer:

1.35 M

Explanation:

grams/molar mass=ans./volume(L)

100/164=ans./.450

The Balanced Chemical Equation is: Na2SO3(aq)+2HCl(aq)→H2SO3(aq)+2NaCl(aq)

What is an Equivalent point?

In an acid-base reaction, the equivalence point is when chemically equal amounts of acid and base are mixed. This is a general reaction pathway that produces a specific acid/base or salt from a mixture of other acids and bases.

This is a mixed acid-base reaction up to the equivalence point.

Aqueous Sulfurous Acid: H2SO3(aq)

Aqueous Hydrochloric Acid: NaCl(aq)

Aqueous Sodium Sulfite: Na2SO3(aq)

Aqueous Hydrochloric Acid: HCl(aq)

Therefore, the balanced formula is:

Na2SO3(aq)+2HCl(aq)→H2SO3(aq)+2NaCl(aq)

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Answer:

Explanation:A

i think

Carbon is a non-metal because, in its elemental state, it cannot form a metallic bond and conduct electricity.

Carbon is a non-metal since it lacks characteristics of metals including ductility, lustre, malleability, electrical conductivity, etc. Moreover, it creates covalent bonds. Carbon is a non-metallic, solid element. Diamond and graphite are two extremely distinct types of pure carbon that may occur.

A metal is a substance that has a shiny look when freshly processed, polished, or shattered, and conducts electricity and heat rather effectively. Carbon lacks the malleability and ductility that are generally seen in metals, which may be hammered into thin sheets or dragged into wires.

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