kinetic molecular natural occurrence examples?

The exponential formula (A/Ao) x 100 ≈ 2.63 x 10-3 x 100 ≈ 0.263 gives the quantity of carbon 14 that was present after t years, meaning that 0.263 % of the original was still there.

Metals are melted using coke made from coal and charcoal, two forms of impure carbon. Inside the steel and iron sectors, it is particularly crucial. Pencil leads, electric motor brushes, and furnace linings all include graphite. For filtration and purification, activated charcoal is employed.

This information on health risks is predicated on exposures with carbon black, and elemental carbon. Chronic inhalation of carbon black can harm the heart and lungs, either permanently or temporarily.

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Lewis and Bronsted acids accelerate processes by binding to nucleophilic sites in molecules and activating the molecule to nucleophile attack.

The electron-pushing mechanism for the reaction by drawing the necessary organic structures and curved arrows for each step is drawn in the image attached. The final products are represented in the image. The negatively charged oxygen is more nucleophilic and thus removes deuterium from deuterated water. Electrons are moving from the negatively charged oxygen to the deuterium, and then they continue to the deuterated oxygen. The electrophilic carbonyl carbon is attacked by the hydride ion from BH₄⁻ because it is a nucleophilic (electron-rich) species, which causes the electrons to go to the carbonyl oxygen.

Images are attached for the complete question and mechanism of a reaction.

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Answer:

We in daily life use technology to pay virtually through virtual wallets, work at home, purchase packages to travel abroad, many businesses handle virtual advertising, that is why it is called the new "market window" to social networks or internet pages, university universities playful methods through virtual campuses or virtual classes.

The serious impact is very great since many of the activities of daily life change, and they will return to being as before the technology affected in our lives, reversing customs and technological generations.

The new technologies are: computer science, engineering, arquetectonica, scientific, industrial, commercial ... Where a fourth industrial revolution arises where many processes that were carried out by humans today would be automated by computers or technological devices that improve market efficiency, of consumption and industrialization.

Explanation:

In addition, new technologies are those that are based on electronic devices that are based on social communication, the development of social networks and technology based on global communications.

No, it does not pass the "fat pencil" test. Therefore, a normal distribution is not a reasonable model. Option B is the correct answer.

The "fat pencil" test is a quick visual check to determine if a dataset can be reasonably approximated by a normal distribution. In this case, the pH readings of wastewater show a significant deviation from a normal distribution. The presence of several low pH values (1.0) and a few high pH values (10.0, 10.5, 11.4) indicate a non-normal distribution with skewness and potential outliers. Therefore, it is not reasonable to model these data using a normal distribution.

Option B is the correct answer.

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Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L} \\\)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

\(n = \frac{8.94 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 14.850498\)

We have the final answer as

Hope this helps you

Mole fraction of  CO = 1 - ( 0.22 + 0.58)

                           =0.20

What is Mole Fraction?

The mole fraction is the product of the number of molecules of a certain component in a mixture and its total molecular weight

As a result, the mole fraction of each component added together is always equal to one.

Please be aware that mole fraction refers to a percentage of molecules, which is distinct from mass fraction because different molecules have different masses.

the proportion between the moles of one component in a solution and the moles of all the components together.

All of the components of a solution's mole fractions added together always equal one.

The mole fraction of co if the h2 mole fraction is 0.22 and the o2 mole fraction is 0.58 is 0.20, below is the solution:

Mole fraction CO + mole fraction H2 + mole fraction O2 = 1

Mole fraction CO = 1 - ( 0.22 + 0.58)=0.20

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The lab coat is not thick enough to protect you from ionizing radiation.

Radiation is a form of energy that we can not see with our optical eyes. We know that radiation could have a damaging effect on the body. The sort of radiation that could have a damaging effect on the body is what we call ionizing radiation.

We know that an ionizing radiation could only be stopped by a thick vest such as a lead coat. If you are wearing a lab coat, you are not safe because the lab cat is not thick enough to protect you from ionizing radiation.

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Answer:

physical science

Explanation:

because it touches all other natural sciences. biology,physics, etc. it is known as the central science:)

Chemistry is a branch of science that focuses on the study of matter, its properties, composition, and how it undergoes changes.Thus, it is a physical science.

Chemistry is a physical science because it investigates the physical and chemical properties of matter, including atoms, molecules, and their interactions. It is also considered a natural science because it studies natural phenomena and processes that occur in the world around us.

Chemistry plays a crucial role in various fields such as medicine, environmental science, materials science, and biochemistry.

In chemistry, scientists use experiments and observations to gather data and analyze it using various techniques and tools. They also develop theories and models to explain the behavior and interactions of matter.

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Butane exists in a liquid state inside a lighter because it is stored under high pressure, which causes its boiling point to decrease.

When butane is stored under high pressure in a lighter, it is forced to remain in a liquid state even at room temperature. Butane has a boiling point of -1°C at atmospheric pressure, which means that it will vaporize into a gas at temperatures higher than this point. However, when it is stored under pressure in a lighter, the pressure forces the boiling point to decrease, which means that butane will remain in a liquid state even at room temperature.

When you press the lighter's button, it releases the pressure on the butane, causing it to convert from a liquid to a gas and ignite with the help of a spark, creating a flame that you can use for various purposes.

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Answer:

B . CO2(g) -----> CO2(l) Entropy canbe decreased only in the cases when liquid is converted to solid and when gas is converted to solid or liquid. The option B is correct.

Answer:

b. CO_2 (g) --> CO_2 (l)

Explanation:

A P E X

The required heat in BTU, for the water at 50°C to become ice at -50°C is 209 BTU/lb.

To determine the required heat in BTU, for the water at 50°C to become ice at -50°C, we need to calculate the heat of fusion and the heat of cooling of water. We can use the following formula to calculate the required heat.

Q = mL

Where:Q is the required heat in BTU.

m is the mass of water in pounds.L is the specific heat of water at the desired temperature.

Lf is the heat of fusion of water.

Lc is the specific heat of ice.

Using the above formula, we get;

Q = mLf + mL + mLc

The heat of fusion of water is 144 BTU/lb

The specific heat of water at 50°C is 1.00 BTU/lb °F.

The specific heat of ice is 0.5 BTU/lb°F.

We know that: 1°C = 1.8°F.

So,50°C = 122°F and -50°C = -58°F

Also, the mass of water is not given, so let us assume that the mass of water is 1 lb.

Thus;

Q = mLf + mL + mLc

Q = 1(144) + 1(1.00)(122-32) + 1(0.5)(-50-0)

Q = 144 + 90 + (-25)

Q = 209 BTU/lb

Therefore, the required heat in BTU, for the water at 50°C to become ice at -50°C is 209 BTU/lb.

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Answer:

I had this same question

Explanation:

The answer is either one, because they both warm up at about the same rate.

Answer:

the answer is 5 m/s² and you can also divide jt by 2 to get its fully ans

According to the package insert, before reconstitution, varivax should be stored in the freezer. Based on this information, the suitable temperature range for varivax should in between -18 °C (0 °F) and -20 °C (-4 °F).

Based on the information provided, Varivax should be stored in the freezer. Typically, the temperature range for freezer storage is between -18 °C (0 °F) and -20 °C (-4 °F). Therefore, Varivax should be stored within this temperature range until it is ready for reconstitution. It is important to follow the specific storage instructions provided in the package insert to ensure the stability and efficacy of the product.

Hence, Varivax should be stored in the freezer with a temperature range in between -18 °C (0 °F) and -20 °C (-4 °F).

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Atomicity refers to the number of atoms present in a molecule of an element or compound. It indicates whether an element exists as individual atoms or as a group of atoms bonded together in a molecule.

Some elements exist as single atoms, known as monatomic elements. Examples include noble gases like helium (He), neon (Ne), and argon (Ar). These gases have stable electronic configurations and do not readily form bonds with other elements.

Other elements exist as diatomic molecules, meaning they are composed of two atoms bonded together. Examples of diatomic elements include hydrogen (H2), oxygen (O2), and nitrogen (N2). These elements form diatomic molecules due to their strong covalent bonds.

Additionally, some elements can exist as polyatomic molecules, meaning they are composed of three or more atoms bonded together. Examples include ozone (O3) and sulfuric acid (H2SO4). These elements form complex structures due to the sharing of electrons between multiple atoms.

Understanding the atomicity of elements is crucial in various chemical reactions and understanding their properties. It helps determine the stoichiometry of reactions, the formation of compounds, and the behavior of elements under different conditions.

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The type of compound is NOT likely to dissolve in water is option D. nonpolar covalent compound

A nonpolar covalent bond is a type of chemical bond between two atoms in which the electrons are shared equally between them. This type of bond does not create a charge separation between the two atoms, resulting in a neutral molecule. Examples of nonpolar covalent bonds include hydrogen (H₂), carbon dioxide (CO₂), and nitrogen (N₂).

Therefore, nonpolar covalent is not likely to dissolve in water. It could be concluded that the correct answer is as given above.

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They are known as the s p 3 hybrid orbitals because they are made up of ones atomic orbital and three p atomic orbitals. Aspartic acid's structural formula is C4H7NO4, as shown in the image below:

The concept of hypothetical orbitals mixing to produce new orbitals with the same energy is referred to as hybridization. The orbitals are shown with hybrid orbitals. Only sigma bonding makes use of hybrid orbitals. Hybridization is the process of combining atomic orbitals to create new hybridized orbitals. These recently hybridized orbitals are known as hybrid orbitals. The total number of atomic orbitals fused will always equal the total number of hybrid orbitals. For example, one s atomic orbital and three p atomic orbitals may combine.

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Answer:  Hello!

first i believe we need a balanced equation to start...

i got 2H2 + 1O2 = 2H2O

This tells us that we need 2 moles of H2 for every 1 mole of O2 Since we only have 1 mole of H2 compared to the 5 moles of O2 hydrogen is the limiting reagent. For illustration, divide the balanced equation by 2 in order to get 1 mole of H2 If we start with 1.0 moles of H2 we'll produce 1.0 mole of H2O

Your welcome <3

Explanation:

The complete table for the number of particles are;

Formula   Molar Mass   # of particles      # of moles      Mass (grams)

                   (g/mol)

A. H2O2      34.0              6.02×10²³               1                    34.02

B. H2O2      34.0              1.204×10²⁴              2                    68.04

C. CO2         44.0             4.515×10²³             0.750                33.0

D.Na2O        62.0             9.03×10²³              1.5                    93.0

E. CO2          44.0            3.01×10²³               0.500                22.0

For us too calculate the number of particles, we use the following formulas

The number of particles is given by the formula n=N/Na.

Number of particles = Moles × Avogadro's number

Avogadro's number is 6.02×10²³.

For example 0.750 × 6.0210²³ = 4.51510²³

                    1.5 × 6.0210²³ = 9.0310²³

To calculate the mass, we use the following formula:

Mass = Moles × Molar mass

Molar mass is the mass of one mole of a substance. It should be written in grams per mole (g/mol).

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The atomic number of the atom shown in the picture would be nine because there is a total of nine protons present inside the nucleus of the atom and the number of protons represents the atomic number of the atom.

The number of neutrons is unrelated to the atomic number of an atom.

An atom's atomic number is determined by the total number of protons it contains.

The number of neutrons is unrelated to the atomic number of an atom.

The atoms in the image would have an atomic number of nine since its nucleus contains a total of nine protons, and the number of protons corresponds to the atomic number of the atom.

Thus, the atomic number of the atom shown would be nine.

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We must first determine how many moles of solute are in a solution in order to compute the molarity of the solution. To do this, divide the solute's mass, 70.0 g, by its molar mass, 94.0 g/mol.

MgCl, 0.743 moles, are the result. Next, we must determine the solution's overall volume, which comes to 342 mL. Since there are 1000 mL in a litre, we may multiply 342 mL by 0.001 to convert this to litres. This produces 0.34 L.

By dividing the entire volume of the solution, 0.342 L, by the number of moles of MgCl, 0.743, we may finally get the solution's molarity. A molarity of 2.17 M is the result.

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Answer:

Atom

Explanation:

An atom is the smallest unit which represents the an element.

It retains the chemical properties of an element.

Answer:

The effect of fertilization on atmospheric carbon dioxide emissions depends on the type of fertilization and the specific context in which it is used. In some cases, fertilization can lead to a positive feedback loop that increases carbon dioxide emissions, while in other cases, it can have a negative feedback loop that reduces emissions.

When fertilizers are applied to agricultural crops, they can increase the productivity and yield of the plants, leading to increased carbon dioxide uptake through photosynthesis. This can have a negative feedback loop, as more carbon is sequestered from the atmosphere and stored in the soil and plant biomass.

However, excessive use of fertilizers can lead to a positive feedback loop. The excess nutrients can cause algal blooms in bodies of water, which can lead to oxygen depletion and the release of carbon dioxide and other greenhouse gases. Moreover, over-fertilization can lead to the degradation of soil health, which can reduce the carbon sequestration potential of soils.

Overall, the impact of fertilization on carbon dioxide emissions depends on various factors such as the type and amount of fertilizer used, the management practices, and the ecological context in which they are applied. It is important to use fertilization practices that support sustainable and regenerative agriculture, minimize greenhouse gas emissions, and promote soil health.

Answer:

13.65 moles

Explanation:

The equation of the reaction is;

3Ca(NO3)2 + Cr2(SO4)3 = 3Ca(SO4) + 2 Cr(NO3)3

4.55 moles of chromium (iii) sulfate reacts with calcium nitrate

The mole ratio of Chromium (iii) sulfate to calcium nitrate is 1: 3

Therefore; the moles of calcium nitrate will be given by

 = (4.55/ 1)×3

= 13.65 moles

Hence; 13.65 moles of calcium nitrate would react with 4.55 moles of Chromium (iii) sulfate.

It is important to measure the boiling point of your water bath because water boils at different temperatures depending on altitude and atmospheric pressure. At sea level, the boiling point of water is typically 100°C (212°F), however, this temperature can vary due to changes in altitude and atmospheric pressure.

The boiling point of water is not always 100°C because it is affected by atmospheric pressure. At higher altitudes, the atmospheric pressure is lower, which causes water to boil at a lower temperature. Therefore, if you are conducting an experiment at a higher altitude, you should not assume that the boiling point of water is 100°C. Instead, you should measure the boiling point of your water bath to ensure that your experiment is accurate.

Additionally, impurities in the water can also affect the boiling point, causing it to be higher or lower than 100°C. Therefore, it is important to measure the boiling point of your water bath rather than assuming it is 100°C.

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Answer:

C.

Explanation:

Noble gases are stable and already have a full outter shell therefore don't tend to lose or gain any electrons.

The average atomic mass of this element is 12.0107 amu.Therefore, the average atomic mass of this element is 12.0107 amu.

To find the average atomic mass, we need to take into account the abundance and mass of each isotope. We can use the following formula:

Average atomic mass = (abundance of isotope 1 x mass of isotope 1) + (abundance of isotope 2 x mass of isotope 2)

Plugging in the values given in the question, we get:

Average atomic mass = (0.0107 x 13) + (0.9893 x 12)
Average atomic mass = 0.1391 + 11.8716
Average atomic mass = 12.0107 amu

Therefore, the average atomic mass of this element is 12.0107 amu.

To calculate the average atomic mass of an element with two stable isotopes, you need to multiply the mass of each isotope by its abundance (in decimal form) and then add the results together. Here's the calculation:

Isotope 1: 13 amu * 0.0107 = 0.1391
Isotope 2: 12 amu * 0.9893 = 11.8716

Average atomic mass = 0.1391 + 11.8716 = 12.0107 amu

So, the average atomic mass of this element is 12.0107 amu.

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