which metal is not required to have its charge specified in the names of ionic compounds it forms? group of answer choices mo ni zr cr na

Answer:

Hey there! The nuclear symbol for an ion with a charge of +220 protons and 24 neutrons would be written as follows:

220+ 24

The symbol consists of two parts: the atomic number (220+) and the atomic mass (24). The atomic number is the number of protons in the nucleus of an atom, and it is represented by a superscript on the left side of the symbol. The atomic mass is the total number of protons and neutrons in the nucleus, and it is represented by a subscript on the right side of the symbol.

In this case, the atomic number of the ion is 220, which indicates that it has 220 protons in its nucleus. The atomic mass is 24, which indicates that it has a total of 220 protons + 24 neutrons = 244 particles in its nucleus.

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Nuclear symbols are a way of writing down the important information about atoms and ions in a short and easy-to-read format. They usually consist of two parts: the atomic number and the atomic mass. The atomic number tells us how many protons an atom has in its nucleus, and the atomic mass tells us the total number of protons and neutrons. For example, the nuclear symbol for carbon is 6 12C, which tells us that carbon has 6 protons and 12 particles (6 protons + 6 neutrons) in its nucleus.

To determine the number of protons in an atom or ion, we can look at its atomic number, which is usually written as a superscript on the left side of the nuclear symbol. For example, if the nuclear symbol for an atom or ion is written as 6 12C, we can tell that it has 6 protons. To determine the number of neutrons, we can subtract the atomic number from the atomic mass. For example, if the atomic mass is 12 and the atomic number is 6, then the number of neutrons is 12 - 6 = 6. To determine the number of electrons, we can just look at the overall charge of the atom or ion. If it is neutral, then it will have the same number of protons and electrons. If it is positive or negative, then it will have more or fewer electrons than protons, respectively.

The appropriate expression for entropy change is ΔS = nR ln(V₂/V₁) + nCp ln(T₂/T₁).

The expression for calculating the entropy change (ΔS) of an ideal gas during a process involving temperature and volume changes is given by the equation above. Here, n represents the number of moles of the gas, R is the ideal gas constant, Cp is the molar heat capacity at constant pressure, V₁ and V₂ are the initial and final volumes respectively, and T₁ and T₂ are the initial and final temperatures respectively.

To calculate the value of ΔS, we substitute the given values into the equation:

ΔS = (3.00 mol)(8.314 J/(mol·K)) ln(120.0 L / 90.0 L) + (3.00 mol)(Cp) ln(345 K / 298 K)

The value of Cp depends on the specific gas involved, as it represents the molar heat capacity at constant pressure. The specific value of Cp would need to be provided to calculate the exact numerical value of ΔS.

By using the provided expression and plugging in the given values, along with the specific heat capacity value, you can calculate the entropy change associated with heating and expanding the ideal gas from the initial conditions to the final conditions.

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water is to gas as liquid is to solid

Explanation:

Picture A which shows an overall negative charge represents an anion. Anion are formed when an atom gains an electron. In doing that, the total number of electrons (negative charge) is greater than the number of protons (positive charge), hence it would have an overall negative charge.

Picture B which shows a neutral charge represents a neutral atom. In an atom, the number of electrons equals the number of protons.

Picture C which shows an overall positive charge represents a cation. Cation are formed when an atom loses an electron. In doing that, the total number of electrons (negative charge) is less than the number of protons (positive charge), hence it would have an overall positive charge.

Answer:

H2C2O1

Explanation:

Answer:

Carboxylic Acid

Ester

Ether

Alcohol

Explanation:

Zinc will react with lead nitrate but not calcium chloride because zinc is higher than lead on the reactivity series.

The reactivity series of metals can be seen in the attached image.

From the image, Zn is seen as being less reactive than Ca but more reactive than Pb. The higher the location of a metal on the series, the more its reactivity.

Thus, Zn cannot displace Ca in CaCl2 and thus will not react. However, Zn can displace Pb from PbNO3 and thus will react.

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The volume of the concentrated 1.5 M solution required to prepare 25 mL of a 7.0 M solution is 0.117 L or 117 mL.

To solve the problem, we use the formula M1V1 = M2V2, which relates the initial concentration and volume of the concentrated solution (M1V1) to the final concentration and volume of the diluted solution (M2V2). In this case, we are given the final concentration (M2 = 7.0 M), the final volume (V2 = 25 mL), and the initial concentration (M1 = 1.5 M), so we can solve for the initial volume (V1) of the concentrated solution that we need to use.

We rearrange the formula to solve for V1, which gives us V1 = (M2 x V2) / M1. We substitute the given values into this equation, and we get V1 = (7.0 M x 0.025 L) / 1.5 M = 0.117 L or 117 mL.

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The volume of 0.450 M KNO3 solution containing 0.600 moles of KNO3 is approximately equal to 1333.3 milliliters.

Concentration of the solution in molarity is defined as the number of moles of solute dissolved per liter of solution. The formula for molarity is given as follows:Molarity (M) = \frac{Moles of solute (n) }{ Volume of solution in liters (V)}.

The volume of a solution containing a given amount of solute can be calculated if the molarity is known. The formula for volume is given as follows:V =\frac{ n }{ M}

Given: Molarity (M) = 0.450 MMoles of solute (n) = 0.600 moles

We are to calculate the volume of the solution in milliliters.Volume of solution in liters (V) = \frac{n }{MV }= \frca{0.600 moles }{ 0.450 MM} = 1.3333 liters.

As we have calculated the volume of the solution in liters, we need to convert it into milliliters to get the final answer.1 liter = 1000 millilitersV in milliliters = 1.3333 liters * 1000 mL/liter = 1333.3 milliliters

Therefore, the volume of 0.450 M KNO3 solution containing 0.600 moles of KNO3 is approximately equal to 1333.3 milliliters.

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Answer:

try use distillation

you also can get the salt by evaporate them under the sun

In order to reduce the risk of radiation exposure to individuals and environmental contamination, radioactive wastes are kept. The wastes' radioactivity decreases over time.

Large steel and concrete barrels that contain the garbage are typically properly sealed, although accidents and leaks can still happen. Cancerous growths can result from the severe negative impacts of nuclear waste on life.

Currently, dry casks are used to store all of the nuclear waste that a power plant produces over the course of its lifetime. Since 1987, Yucca Mountain in Nevada has been intended as a permanent disposal location for spent nuclear material.

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Answer:

N=35%. so 35/100*7 =2.45%

H=5.0 so 5/100*1=0.05%

o=60% so 60/100*8=4.8%

Answer:

Iron is  element

Explanation:

Answer: element

Explanation: Iron is an element in the periodic table. Nowadays, itis one of the most common elements we use today. The answer is element because iron is an element. It has electrons and protons and atoms.

Hope this helps you!

A replacement reaction is one wherein a set of atoms is replaced by another atom in a molecule. In the given reactions is 2Na + Cl₂ → 2NaCl is not a replacement reaction.

A displacement reaction also known as a replacement reaction can be defined as one wherein an atom is displaced by another atom in a molecule. For example, when iron (Fe) is added to a solution of copper sulfate (CuSO₄), it displaces the copper (Cu) metal.

A single replacement reaction can be described as a kind of redox reaction when an element moves out of a compound, one element is replaced by the other in its own compound.

\(A +BC\longrightarrow AB +C\)

Double replacement reactions take place mostly in aqueous solutions wherein the ions precipitate and the exchange of ions occurs. The double replacement reaction can be represented as:

\(AB +CD\longrightarrow AC +BD\)

Therefore, option (D) is correct.

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Alpha-amylase breaks the alpha-1,4-glycosidic bonds found in starch molecules.

Alpha-amylase is an enzyme that catalyzes the hydrolysis of alpha-1,4-glycosidic bonds in starch, a type of polysaccharide composed of glucose monomers. Starch is a major carbohydrate storage molecule in plants and is also an important component of the human diet.

When alpha-amylase encounters a starch molecule, it binds to the polysaccharide chain and cleaves it into smaller pieces, called dextrins, by breaking the alpha-1,4-glycosidic bonds between glucose monomers.

The resulting dextrins can then be further broken down into glucose by other enzymes, such as beta-amylase and glucoamylase.

Alpha-amylase is produced by various organisms, including humans, animals, and bacteria. In humans, alpha-amylase is produced in the salivary glands and pancreas and is involved in the initial breakdown of starch in the mouth and small intestine, respectively.

Overall, alpha-amylase plays an important role in the digestion and utilization of starch as a source of energy.

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Alpha-amylase breaks α-1,4-glycosidic bonds between glucose molecules in polysaccharides such as starch and glycogen.

Alpha-amylase breaks glycosidic bonds between glucose molecules in polysaccharides such as starch and glycogen. It specifically targets the α-1,4-glycosidic bond, which is the bond between two glucose units connected in a linear chain. This enzyme hydrolyzes this bond, releasing maltose and shorter polysaccharide chains.

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Answer:

0.05g/ml

Explanation:

density is equal to mass over volume check pic for more info

The property of matter that is conserved in chemical reactions and shown by balanced equations is known as the Law of Conservation of Mass. According to this law, mass can neither be created nor destroyed in a chemical reaction; it can only be transformed from one form to another.For instance, when two substances are combined, they react and form a new substance.

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Answer:

nếu có 40g dung dịch NaOH 20% phairn dùng hết bao nhiêu gam dung dịch HCl 25% để trung hoà

If the hydrogen gas is combusted and produces 645L of water vapor at 400 kelvin and 1.75 atm, 2796.96 g mass of the zinc is produced .

Using the ideal gas law equation:

PV = nRT

n = (PV) / (RT)

= (1.75 atm * 645 L) / (0.0821 atm·L/(mol·K) * 400 K)

= 42.71 moles

the balanced equation for the reaction between zinc and hydrochloric acid:

Zn + 2HCl -> \(ZnCl_{2}\)  + \(H_{2}\)

1 mole of zinc produces 1 mole of hydrogen gas. Therefore, the moles of zinc are also 42.71.

The molar mass of zinc is 65.38 g/mol.

Mass of zinc = moles of zinc * molar mass of zinc

= 42.71 moles * 65.38 g/mol

= 2796.96 g

Therefore, the mass of the zinc is 2796.96 grams.

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Answer:

Because they usually are eager to give electron so number of electrons will decrease and number of protons will increase and net charge of the element will be positive and will form positive ions

Explanation:

above

According to the electronic configuration, metal atoms tend to loose electrons to form cations and form electropositive elements.

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

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ANSWER

The addition of HCl will shift to reactants

EXPLANATION

When some strong acid is added to a buffer, the equilibrium is shifted to the left, and the hydrogen ion concentration increases by less than expected for the amount of strong acid added. Buffer solution helps in adjusting the pH of a substance.

Since the HCl is a strong acid, it will shift to the left (reactant sides)

Answer:

Foil is made from the same material as soda cans (aluminum), but since it's most often contaminated with food waste or combined with plastic (like with yogurt tops), there's no guarantee you can recycle it with your aluminum cans.

Explanation:

Mark me brainly please

Answer:

I hate to not answer and have you repost this if you could repost it with the choices by clicking the arrow I can figure it out a lot faster and I'll copy and paste to show you that it's right

Explanation:

I'm good with history biology sum math so if you want to do what I asked and reposted I can give you the answers and I will show that they are correct I won't just guess like some people do just to get points cuz I don't care about points I just get on here to help people

Answer: The answer for the blanks is initial appearance and than final appearance.

Explanation:

Answer: Nonlinear

It's the right answer, I got it right so I'm 99.99% it'll be for yours too.

Answer:

Nov. ✔ = Feb.

Oct. ✔ < Dec.

Jan. ✔ > Nov.

Explanation:

This IS the right answer!☺️

After solving the problem the final volume of the gas is 35L.

The final volume is the amount of space occupied by an object, gas, or liquid in its finished state. It is the total volume of a substance, regardless of any changes that may have occurred to it during a process.

The final volume of the gas can be calculated using the ideal gas law. The ideal gas law states that:
PV = nRT
where P is pressure, V is volume, n is the amount of substance, R is the ideal gas constant and T is temperature.
Since this is an isothermal process, the temperature is constant and can be cancelled out. We can rearrange the equation to:
V2 = V1 (P2/P1)
where V2 is the final volume and V1 is the initial volume.
Substituting in the values, we get:V2 = 20L (1.75/1.00)
V2 = 35L
Therefore, the final volume of the gas is 35L.

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The standard free energy of the above reaction is calculated to be 2247kJ

The standard reaction free energy can be calculated using the formula:

ΔG° = -nF E°

where:

ΔG° is the standard reaction free energy

n is the number of electrons transferred in the balanced redox reaction

F is the Faraday constant (96,485 C/mol)

E° is the standard reduction potential of the half-reactions involved in the redox reaction

First, let's write the two half-reactions for the redox reaction:

Br2 + 2 e- → 2 Br- E° = +1.087 V

12 H2O + 12 e- → 6 H2 + 12 OH- E° = -0.828 V

Since 6 electrons are transferred in the reaction, we need to multiply the second half-reaction by 6 so that the electrons cancel out:

6 (12 H2O + 12 e- → 6 H2 + 12 OH-) E° = -4.968 V

Now we can add the two half-reactions to get the overall balanced reaction:

12 (s) + 6 H2O (l) + 5 Br2 (l) → 2103 (aq) + 12 H+ (aq) + 10 Br- (aq)

The standard reaction free energy can now be calculated:

ΔG° = -nF E°

ΔG° = -(6 mol e-)(96,485 C/mol)(-4.968 V + 1.087 V)

ΔG° = +2,246,749.71 J = +2246.749 kJ

Rounding to 3 significant digits, the standard reaction free energy is:

ΔG° = +2247kJ

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Answer:

Iron 55 (Fe-55) is the iron isotope whose nucleus consists of 26 protons and 29 neutrons. It is a radioisotope that disintegrates by electron capture in manganese 55.

Explanation:

i hope this helps if not tell me

The amount of water that crystallises is 305.1%.

Crystalization is a process of separating solid particles from a solution. It occurs when a solvent, such as water, is mixed with a solute, such as salt or sugar.The percentage of water of crystallization in 35.7g Na₂CO₃ 10 H₂O can be calculated using the following equation:

Percentage of water of crystallization =\((\frac{Mass of water of crystallization}{Mass of anhydrous salt}) * 100\)

Mass of water of crystallization = 10 * (18.015 g/mol) = 180.15 g

Mass of anhydrous salt = (2 * (22.99 g/mol) + 1 * (12.01 g/mol)) = 58.97 g

The percentage of water of crystallization =\((\frac{180.15 g}{58.97 g}) * 100 = 305.1 \%.\)

Therefore,The percentage of water of crystallization is 305.1%.

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Answer:

4.4 moles of water

Explanation:

Propane is C3H8. Is the chemical equation, you wrote C2H8 which is wrong. Type everything properly and give a check before finally posting the question.

The chemical equation that is given, is not properly balanced. The BALANCED equation would be

C3H8 + 5O2 → 3CO2 + 4H2O

From this balanced chemical equation, we see that 5 moles of oxygen produce 4 moles of water.

5 moles of Oxygen → 4 moles of water

1mole of oxygen → \(\frac{4}{5}\) moles of water

5.5 moles of oxygen → (\(\frac{4}{5}\) × 5.5) moles of water = 4.4 moles of water

∴ The reaction of 5.5 mol of O2 will produce 4.4 mol of H2O. [Answer:]

Answer:

5.5

Explanation:

First, you will need to balance the equation ( the equation in your question is not balanced....typo?)

C2 H8    + 4 O2   ===> 2 CO2   + 4 H2O

Now, from the balanced equation:

O2 : H2O =  4/4 = 1/1

SO   5.5 MOLES  OF  O2  PRODUCES 5.5 MOLES  H20