Why do atoms become anion and cations (remember the octet rule and how 8 is a very important number)?

Answer:

catalyst

Explanation:

Answer:

Answer:Your skeletal system relies on the nutrients it gains from your digestive system to bulid strong healthy bones .A body system is a group of parts that work together to serve a common purpose .

maybe this might be ur answer

Answer:

nitrogen and carbon because there diffusion rate is high

The electrolysis of molten magnesium chloride produces magnesium metal at the cathode and chlorine gas at the anode.

The electrolysis of molten magnesium chloride is a process that uses electricity to split the molten salt into its component elements. The molten salt is placed in an electrolysis cell, which has two electrodes: a cathode and an anode. The cathode is connected to the negative terminal of the power supply, and the anode is connected to the positive terminal of the power supply.

When the power supply is turned on, electrons flow from the negative terminal of the power supply to the cathode, and protons flow from the positive terminal of the power supply to the anode. The electrons at the cathode react with the chloride ions in the molten salt to form chlorine gas. The protons at the anode react with the magnesium ions in the molten salt to form magnesium metal.

The overall reaction is:

MgCl₂ → Mg + Cl₂

The magnesium metal is produced at the cathode and rises to the top of the cell, where it can be collected. The chlorine gas is produced at the anode and bubbles out of the cell.

The electrolysis of molten magnesium chloride is a very efficient way to produce magnesium metal. The process is also relatively inexpensive, and it does not produce any harmful pollutants.

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The modern periodic table consists of the elements which are arranged in the increasing order of their atomic numbers. The element 'C' belongs to 14th group of the periodic table. The correct option is A.

The orbital diagrams are the pictorial representation of the electrons in an atom. The orbital diagrams are mainly based on the Auf Bau principle, Pauli's exclusion principle and Hund's rule of maximum multiplicity.

According to Auf Bau principle, the electrons are arranged in the orbitals in the increasing order of their energies. The pauli's exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers.

The hund's rule states that the unpaired electrons in the orbitals have parallel spins. The atomic number of 'C' is 6, and its electronic configuration is 1s²2s²2p².

Thus the correct option is A.

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Chemical change: A chemical reaction is the change of one chemical substance into another chemical substance. For instance: The rusting of iron, the curdling of milk, the digestion of food, breathing, etc.

What is a chemical reaction?

A chemical reaction is the change of one chemical substance into another chemical substance.

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Chemical  change is the change  chemical substance is transformed into another chemical substance.It is irreversible in  nature , for example Reaction of medicine in body , milk to curd etc.

1)Physical change temporary or reversible in nature but chemical change is irreversible in nature

2)In physical change there no new product is formed but in chemical change there formation of new product takes .

3) Physical change is change sin shape ,size or state for example freezing of water , melting of wax , and example of  Chemical change are Burning of  coal, digestion of food

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answer; 8.017*10^3

Explanation: because cube means it is multiplication of three times so we multiply 86.3 three times and again we multiply it with 100 because we need to convert it in mm and at last we put the answer in cube root ..

Answer:Covalent bonds tend to form between metals and nonmetals.

Explanation:

In this example, the exam, Carlos concerns, and his behavior may be seen as an example of eustress.

Stress is a normal physiological and psychological reaction that people have in response to their surroundings. Eustress refers to positive, motivating stress that improves functioning, whereas distress refers to negative, overwhelming stress that impairs functioning.

Eustress refers to positive stress, which can be psychological, physical, or biochemical/radiological. Endocrinologist Hans Selye coined the term, which combines the Greek prefix eu-, which means "good," and stress, which literally means "good stress." Eustress refers to beneficial stress, which can be psychological, physical, or biochemical/radiological in nature.

Since Carlos has a comprehensive final exam in three weeks that he is concerned about and this made him to go ahead and start studying, this is eustress.

Exhilarating rides, competition, and a good scary movie are all examples of Eustress.

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Complete question

Carlos has a comprehensive final exam in three weeks that he is concerned about. His concerns prompt him to go ahead and start studying and in doing so, he feels less worried as the exam approaches. In this example, the exam, Carlos concerns, and his behavior may be seen as an example of ?

The molecular formula of the compound is C₄H₈.

Let in  compound number of moles of C and H be x and y respectively.

Number of moles of CO₂ = mass of CO₂ / molar mass CO₂

= 3.14/44

= 0.0714

Number of moles of H₂O = mass of H₂O / molar mass H₂O

= 1.28/18

= 0.0711

Since 1 mol of CO₂ has 1 mol of C.

Number of moles of C in CO₂ = 0.0714

so, x = 0.0714

Since 1 mol of H₂O has 2 mol of H

Number of moles of H = 2 × 0.0711 = 0.1422

Dividing by smallest number to get simplest whole number ratio:

For, C: 0.0714/0.0714 = 1

For, H: 0.1422/0.0714 = 2

So empirical formula is: CH₂

Option 1 and option 4 has empirical formula of CH₂

molar mass of C₃H₆ = 3 × 12 + 1 × 6 = 42 g/mol

molar mass of C₄H₈ = 4 × 12 + 1 × 8 = 56 g/mol

So, the molecular formula is C₄H₈.

Hence, option 4 is correct.

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Answer:

the aNSWRER TOP UR QUESTION IS THAT I NMEED TO ANSWER THIS SO I DONT HAVE TO WQATCH ADS  LOL

Explanation:

DSADSDASDASDASDSDSDSDSDS and i knowq chem is bio chwem is

Answer:

"Your Choice: Liberation From Your Own Choices or Continue the Choice That Decreases Your Liberation."

Explanation:

Liberation is the freeing or release from something restraining you. In this case, smoking holds you back from doing the things you used to do.

It's not that creative, but I hope this is good enough for you! :D (don't smoke)

The volume of calcium hydroxide solution required to titrate 35.0 mL of 0.440 M phosphoric acid to the third equivalence point is 87.5 mL.

In the given case, we have to calculate the volume of 0.530 M calcium hydroxide solution required to titrate 35.0 mL of 0.440 M phosphoric acid to the third equivalence point.

The chemical equation for the reaction of phosphoric acid with calcium hydroxide is given below:

H₃PO₄ + Ca(OH)₂ → Ca(H₂PO₄)₂ + 2H₂O

Molar mass of H₃PO₄ = 3(1.008) + 1(30.974) + 4(15.999)

                                    = 98.0 g/mol

Molar mass of Ca(OH)₂ = 1(40.078) + 2(15.999)

                                         = 74.1 g/mol

Number of moles of H₃PO₄ in 35.0 mL of 0.440 M

phosphoric acid= Molarity × Volume(in liters)

= 0.440 × (35.0/1000)

= 0.0154 mol

Number of moles of Ca(OH)₂ required to react completely with 0.0154 mol of H₃PO₄= 0.0154 mol

Number of moles of Ca(OH)₂ present in the solution

= Molarity × Volume(in liters)

= 0.530 × Volume

Calcium hydroxide will react with phosphoric acid until the third equivalence point is reached.

Ca(OH)₂ + 2H₃PO₄ → Ca(H₂PO₄)₂ + 2H₂O(moles)

0.0154         0.031                0.0464

(Molarity) 0.53              0.53              0.53

(Volume)    V₁                   V₂                         V₃

Equivalence point is the point where the number of moles of two reactants is equal to each other.The number of moles of H₃PO₄ is equal to the number of moles of Ca(OH)₂ at the third equivalence point,

So, 0.0464 mol of Ca(OH)₂ is required to react completely with 0.0154 mol of H₃PO₄  .

Volume of 0.530 M calcium hydroxide solution required to titrate 35.0 mL of 0.440 M phosphoric acid to the third equivalence point

= (0.0464 mol)/(0.530 mol/L)

= 0.0875

L= 87.5 mL (rounded to three significant figures)

Therefore, the volume of 0.530 M calcium hydroxide solution required to titrate 35.0 mL of 0.440 M phosphoric acid to the third equivalence point is 87.5 mL.

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The Beaker of water that has more thermal energy is Beaker 1.

The total energy of all the particles is known as thermal energy. This implies that larger objects with slower-moving particles and lower temperatures can have more energy than smaller ones with higher temperatures (faster moving particles).

The amount of material in a sample of matter is measured by mass, hence the thermal energy is a function of the measured object's mass and temperature. An object's mass determines how many particles it contains and how much thermal energy it has at a given temperature.

For this reason, Beaker 1 which had more water, will have more thermal energy.

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The mass of a sample of NH₃ containing 3.80 × 10²⁴ molecules of NH₃ is the product of the number of moles and the molar mass of NH₃.

To find the mass of a sample of NH₃ containing 3.80 × 10²⁴ molecules of NH₃.

Step 1: Determine the number of moles of NH₃
We know that there are 6.022 × 10²³ molecules in one mole of any substance (Avogadro's number). To find the number of moles of NH₃, divide the given number of molecules by Avogadro's number:
Number of moles = (3.80 × 10²⁴ molecules) / (6.022 × 10²³ molecules/mol)

Step 2: Calculate the molar mass of NH₃
NH₃ consists of one nitrogen (N) atom and three hydrogen (H) atoms. The atomic mass of nitrogen is approximately 14 g/mol, and the atomic mass of hydrogen is approximately 1 g/mol. So the molar mass of NH₃ is:
Molar mass of NH₃= (1 × 14 g/mol) + (3 × 1 g/mol) = 14 + 3 = 17 g/mol

Step 3: Find the mass of the sample
Now that we know the number of moles and the molar mass, we can find the mass of the sample by multiplying the two values:
Mass of the sample = Number of moles × Molar mass of NH₃

The mass of a sample of NH₃ containing 3.80 × 10²⁴ molecules of NH₃ is the product of the number of moles (calculated in step 1) and the molar mass of NH₃ (calculated in step 2).

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Answer:

solute, im pretty sure

Explanation:

The formula of the complex ion that forms between one silver(i) ion, ag , and two units of ammonia, NH₃ is Ag (NH₃)₂⁺.

A coordination complex is an organic compound made up of a core atom or ion, known as the coordination centre and often metallic, and an array of attached molecules or ions, sometimes known as ligands or complexing agents. Many metal-containing compounds are coordination complexes, particularly those that contain transition metals (elements like titanium that are in the Periodic Table's d-block).

Because coordination complexes are so common, their structures and reactions are frequently described in conflicting ways. The donor atom is the atom in a ligand that is bound to the main metal atom or ion. A metal ion is joined to many donor atoms, which may or may not be the same, in a typical complex. A polydentate (many bonded) ligand is a molecule or ion that forms binds with the central atom through a number of its atoms; these links can be as many as 2, 3, 4, or even 6. These complexes are chelate complexes, and the processes that lead to their formation include chelation, complexation, and coordination.

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Answer:

Ammonium Ion (NH4+)

Explanation:

The chemical name for NH4 is ammonium.

Answer:

The renewable energy source among the options you provided is solar power (option C). Solar energy is derived from the sun and can be converted into electricity or used for heating and other applications. It is a clean and sustainable form of energy.

Explanation:

The Big Bang theory is the idea that the universe began as just a single point, which results in the growing of this world.

From the Big Bang theory which would you believe to be the closest explaining the creation of the universe?

The Big Bang theory is the best model of the astronomers to explain the creation of matter, in space and time 13.7 billion years ago. The best about this theory is about the explosion that started it all and how the universe growed from the size of an atom to encompass everything in existence today. This argues that the Universe began as almost a single point with a temperature and density of near infinity.

So we can conclude that: The Big Bang theory is the idea that the universe began as just a single point, which results in the growing of this world.

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answer:

d. the study of heat flow.

explanation:

thermodynamics is the study of the relations between heat, work, temperature, and energy.

We have a total of 9.27 moles of the molecule that weights 134.1 g/mol.

The molecular mass of the molecule is 134.7 g/mol.

The amount of the molecule that we have is 1.25kg.

We know,

1 kilogram = 1000 grams.

1.25 kilograms = 1250 grams.

The mass of the amount of molecule we have is 1250 grams.

The moles of a molecule are given by,

Moles = Mass that we have/molecular mass

Putting the values accordingly,

Moles = 1250/134.7

Moles = 9.27 moles.

So, we have 9.27 moles of that molecule whose molecular mass is 134.1 g/mol.

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Answer:

D  or C Because C speads up the process while D makes the water have to process less But I say C

Explanation:

could I get brainlists plz

Answer: C & D

Explanation: hope this helps

Answer:

D. Air moves from high-pressure areas to low-pressure areas.

Explanation:

When a low-pressure area interacts with a high-pressure area, the air tries to move to balance. There is more relative energy in the higher pressure area so it moves to the lower pressure area. Movement is what creates the wind.

Answer:

D

Explanation:

A )No....high pressure is denser ( heavier)

B) No.... think about a balloon...the air inside is under pressure.... when you open it up the air goes to the low pressure room

C)  No

D )  Yes ...see explanation above in B)

Answer:

Velocity = 12 km/h

Explanation:

Velocity can be defined as the division between distance traveled and the time it took for that distance to be traveled:

With the above information in mind, we can calculate the velocity of the bicycle:

Thus the velocity of the bicycle is 12 kilometers per hour.

The statement that best describes a scatterplot is that it shows quantitative data that relate two variables (option C).

A scatter plot is a type of graph that displays the relationship between two variables.

The scatter plot is portrayed on a cartesian plane where one of the variables is on an axis called X-axis and the other is on another axis called y-axis.

One of the variables is the independent variable while the other variable is the dependent variable.

Therefore, the statement that best describes a scatterplot is that it shows quantitative data that relate two variables.

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Answer:

The addition of energy  through the chemical reaction when substance combines and gets decomposed.

Explanation: