Which of the following is NOT an example of a type of arrangement?

Answer: metal turn orange and weaker as it gets oxidised

Explanation:

It's important to note that equilibrium is a dynamic state, meaning that while the conditions mentioned above are true, there may still be continuous microscopic fluctuations or changes within the system, but the macroscopic properties remain constant.

What is Equilibrium?

Equilibrium refers to a state of balance or stability in a system where there is no net change or overall tendency for change to occur. In various scientific disciplines, including physics, chemistry, and biology, equilibrium is a fundamental concept that describes the balance between opposing forces or processes.

Balance of forces: The net force acting on the system is zero. This means that the forces acting in opposite directions are balanced, and there is no overall acceleration of the system.

Balance of torques: The net torque (or moment) acting on the system is zero. This means that the torques acting in opposite directions are balanced, and there is no rotational acceleration of the system.

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Answer:

We have the following chemical reaction:

As we can see the equation is balanced because we have the same number of atoms of each element on each side of the equation:

2 nitrogen atoms

6 hydrogen atoms

Now, to answer the question we look at the balanced equation and see that for every mol of N2 that reacts, we need 3 moles of H2 to react. So we calculate the number of moles of H2 needed to react with 0.55 mol of N2 as follows:

So the answer is 1.65 mol of H2.

Answer:

Mass number (A) is the number of nucleons (proton and neutron) present in a atom.

Explanation:

electrons don't cout since they are thousandth's of the mass of protons or neutrons

The relative atomic mass of atom X is 9.

The relative atomic mass of an element is the average mass of its atoms relative to 1/12th the mass of a carbon-12 atom.

Given that atom X is 9 times heavier than 1/12th the mass of a carbon-12 atom, we can calculate the relative atomic mass of X as follows:

Relative atomic mass of X = (9 × 1/12) × relative atomic mass of carbon-12

The relative atomic mass of carbon-12 is defined as exactly 12. Therefore, we have:

Relative atomic mass of X = (9 × 1/12) × 12

= 9

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Answer:

D.

the father parent shares his genetic information with the mother during sexual intercourse( the sperm and egg)

Hi friend! Hope you find this response helpful! :)

Ocean currents regulate the Earth's climate and make up for the difference in solar energy radiation hitting the surface of the planet. As such, water current distributes heat. The ocean absorbs most of the sun's radiation on Earth, in contrast to the atmosphere and to land.

Answer: By moving heat from the equator toward the poles, ocean currents play an important role in controlling the climate.

Explanation:

The water at the nearest lake is a good buffer than water from the tap.

A buffer solution is a solution that has the ability to resist the pH change of the solution because it either contains a weak acid and its conjugate base or a weak base and its conjugate acid.

Examples of naturally containing buffer solution is the blood which contains bicarbonate as a buffering system that maintains its pH.

In the lake, there are presence of shoreline buffer which is a strip of natural vegetation along the shoreline of a lake. It creates a natural buffer system that helps resist the acidifying effect of additional acid rainfall.

Therefore, the water at the nearest lake is a good buffer than water from the tap.

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Answer:

It’s probably plants seed and raise crops for their food

Explanation:

Answer:

I would say b

Explanation:

A hunter would go out to hunt and gathers handle crops or find crops so b.

Answer:

1.42 moles

Explanation:

25.58 g of H₂O .

Molecular weight of water = 2 x 1 + 16 = 18

1 mole of water = 18 g of water

18 g of water = 1 mole

25.58 g of water = 25.58 / 18 mole

= 1.42 moles .

A) The chemical symbol for the ion is Fe+

B) It has 20 electrons in total, and there are 6 3p electrons in the ion.

C) There are 6 electrons present in the 3p orbital.

The atomic cation with the given electron configuration is represented by the chemical symbol Fe+.

To determine the number of electrons in the ion, we need to count the electrons present in the electron configuration. In the given configuration, we can see that the 1s orbital has 2 electrons, the 2s orbital has 2 electrons, the 2p orbital has 6 electrons, the 3s orbital has 2 electrons, the 3p orbital has 6 electrons, the 3d orbital has 1 electron, and the 4s orbital has 1 electron. Adding up these numbers, we have:

2 + 2 + 6 + 2 + 6 + 1 + 1 = 20

Therefore, the ion has 20 electrons.

To determine the number of 3p electrons in the ion, we look at the 3p orbital. In this case, there are 6 electrons present in the 3p orbital.

In summary, the chemical symbol for the ion is Fe+, it has 20 electrons in total, and there are 6 3p electrons in the ion.

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Answer: d

Explanation:because it makes sence i think

Answer:

11.7

Explanation:

The pH is the negative logarithm of the concentration of H+ ions. If the concentration is 2×10-¹² the the pH will be -log(2×10-¹²) which is 11.698 which can be round up to 11.7.

\(\text{Morality}= \dfrac{\text{Number of moles}}{\text{Volume}}=\dfrac{3.25}{2.78}=1.169 ~mol/L\)

The concentration (in mole/liter) of the nitric acid is 0.139 M.

Concentration refers to the amount of a substance in a defined space. Another definition is that concentration is the ratio of solute in a solution to either solvent or total solution.

There are various methods of expressing the concentration of a solution.

Concentrations are usually expressed in terms of molarity, defined as the number of moles of solute in 1 L of solution.

Solutions of known concentration can be prepared either by dissolving a known mass of solute in a solvent and diluting to a desired final volume or by diluting the appropriate volume of a more concentrated solution (a stock solution) to the desired final volume.

Given,

Volume of NaOH = 11.02 ml

Concentration of NaOH = 0.253 M

Volume of nitric acid = 20.05 ml

Number of moles stay same on neutralisation, so

Volume of NaOH × Concentration of NaOH = Volume of nitric acid × concentration of nitric acid.

11.02 × 0.253 = 20.05 × concentration

Concentration of nitric acid = 0.139 M

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Answer:

A) 3.17 g of Zn

Explanation:

Let's consider the reduction of Zn(II) that occurs in an electrolysis bath.

Zn⁺²(aq) + 2e⁻ → Zn(s)

We can establish the following relations:

The mass of Zn deposited under these conditions is:

\(24min \times \frac{60s}{1min} \times \frac{6.5C}{s} \times \frac{1mol\ e^{-} }{96,468C} \times \frac{1molZn}{2mol\ e^{-}} \times \frac{65.38g}{1molZn} = 3.17 g\)

Answer:

A.) 3.17

Explanation:

I got it right in class!

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Answer:

The pressure of the gas is 5.8atm.

Explanation:

The information given in the exercise is:

- Number of moles (n): 7.2mol

- Volume of the gas (V): 63.5L

- Temperature of the gas (T): 350°C (623K)

We can use the Ideal Gases formula to calculate the pressure of the gas, replacing the values of n, V and T.

Remember that the units must be always in atm, liters, mol and Kelvin when using the Ideal Gases formula:

So, the pressure of the gas is 5.8atm.

Answer: true

Explanation: In this example, the processes (perceive, process, and respond), are done in a matter of milliseconds, but reaction time can vary depending on a variety of factors: Complexity of the stimulus-The more complex the stimulus, the more information that has to be processed, the longer this process will take.

Answer:

Answer is - 2. ...........

At constant temperature, if the volume of the sample of gas decreases, the pressure increases to 4.0atm.

Hence, option1)4 atm is the correct answer.

Boyle's law simply states that "the volume of any given quantity of gas is inversely proportional to its pressure as long as temperature remains constant.

Boyle's law is expressed as;

P₁V₁ = P₂V₂

Where P₁ is Initial Pressure, V₁ is Initial volume, P₂ is Final Pressure and V₂ is Final volume.

Given the data in the question question;

We substitute our given values into the expression above to determine the new pressure.

P₁V₁ = P₂V₂

P₂ = P₁V₁ / V₂

P₂ = ( 1.0atm × 0.2L ) / 0.05L

P₂ = 0.2Latm / 0.05L

P₂ = 4atm

At constant temperature, if the volume of the sample of gas decreases, the pressure increases to 4.0atm.

Hence, option1)4 atm is the correct answer.

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Answer:

48 moles

Explanation:

Answer to question 4:

Hydrocarbons are compounds that contain:

(2) carbon and hydrogen , only.

They vary in their configuration and can be classified in alkanes (containing only single carbon-carbon bonds), alkenes (containing a carbon-carbon double bond), alkynes (containing a carbon.-carbon triple bond) and aromatic hydrocarbons (have a six carbon ring).

Answer: 7.07 grams

Explanation:

To calculate the moles :

\(\text{Moles of solute}=\frac{\text{given mass}}\times{\text{Molar Mass}}\)    

\(\text{Moles of} zinc=\frac{21g}{65g/mol}=0.32moles\)

\(\text{Moles of} CuCl_2=\frac{7g}{134g/mol}=0.052moles\)

\(Zn+CuCl_2\rightarrow Cu+ZnCl_2\)

According to stoichiometry :

1 mole of \(CuCl_2\) require 1 mole of \(Zn\)

Thus 0.052 moles of \(CuCl_2\) will require=\(\frac{1}{1}\times 0.052=0.052moles\)  of \(Zn\)

Thus \(CuCl_2\) is the limiting reagent as it limits the formation of product and \(Zn\) is the excess reagent.

As 1 mole of \(CuCl_2\) give = 1 mole of \(ZnCl_2\)

Thus 0.052 moles of \(CuCl_2\) give =\(\frac{1}{1}\times 0.052=0.052moles\)  of \(ZnCl_2\)

Mass of \(ZnCl_2=moles\times {\text {Molar mass}}=0.052moles\times 136g/mol=7.07g\)

Thus 7.07 g of \(ZnCl_2\) will be produced from the given masses of both reactants.

Answer:

H

2

O

2

(aq)+ClO

4

−

(aq)⟶O

2

(g)+ClO

2

−

(aq)

All atoms except H and O are balanced.

The oxidation number of Cl changes from 7 to 3. The change in the oxidation number is 4.

The oxidation number of O changes from -1 to 0. The change in oxidation number per O atom is 1.

Total change in the oxidation number for 2 oxygen atoms is 2.

To balance the increase in oxidation number with decrease in the oxidation number, multiply H

2

O

2

and O

2

with coefficients 2.

2H

2

O

2

(aq)+ClO

4

−

(aq)⟶2O

2

(g)+ClO

2

−

(aq)

To balance O atoms, add 2 water molecules on RHS.

2H

2

O

2

(aq)+ClO

4

−

(aq)⟶2O

2

(g)+ClO

2

−

(aq)+2H

2

O(l)

The oxygen atoms are already balanced.

This is the balanced chemical equation

Answer:

Solid piece of ice.

Explanation:

Solid piece of ice can easily melt due to heat radiation

Some types of solids that are insoluble in water are:

Many solids are insoluble in water, meaning they do not dissolve in water to a significant extent. Here are some examples of common solids that are generally insoluble in water:

Metals: Most metals, such as gold, silver, platinum, and copper, are insoluble in water.

Non-Metallic Elements: Many non-metallic elements, such as carbon (in the form of graphite or diamond), sulfur, phosphorus, and iodine, are insoluble in water.

Metal Oxides: Some metal oxides, particularly those of less reactive metals, are insoluble in water. Examples include aluminum oxide (Al2O3), iron(III) oxide (Fe2O3), and lead(II) oxide (PbO).

Metal Carbonates: Most metal carbonates are insoluble in water. Examples include calcium carbonate (CaCO3), lead(II) carbonate (PbCO3), and copper(II) carbonate (CuCO3).

Metal Sulfides: Many metal sulfides are insoluble in water. Examples include lead(II) sulfide (PbS), silver sulfide (Ag2S), and mercury(II) sulfide (HgS).

Insoluble Salts: Certain salts have limited solubility in water. Examples include silver chloride (AgCl), lead(II) iodide (PbI2), and calcium sulfate (CaSO4).

It's important to note that while these solids are generally insoluble in water, they may exhibit some solubility to a small extent. The solubility of a solid in water can vary depending on factors such as temperature, pressure, and the presence of other solutes.

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Answer:

can only be determined experimentally.

Explanation:

In the early days of inorganic chemistry, the structure of complex ions remained a mystery hence the name ''complex''.

These ions appear to have structures that defied accurate elucidation. However, by diligent laboratory investigation, Alfred Werner was able to accurately determine the structure of cobalt complexes. As a result of this, he is regarded as a pathfinder in coordination chemistry.

Hence, the structure of complex ions can only be determined experimentally.

Answer:

c. can only be determined experimentally

Explanation:

It is not possible to know for certain the structure of a complex ion on the basis of stoichiometry or by the electrical charges on the components. The structure of the resulting complex ion can only be known by experiment.

Answer:

what e said

Explanation:

Answer:

Pretty sure it's B

Explanation:

Explanation:

a is the answer ok write it easily bye

Answer:

ummm u ok?

Explanation: