Who introduced the symbols we use in chemistry today?

Always moving from anode to cathode, electrons. This is the transition from an oxidation to a reduction half cell. Electrons will switch from Fe²⁺ towards Cl₂ in this reaction.

The smallest elemental component of an atom, the electron has a negative charge. In a neutral atom, there are an equal amount of protons and electrons. One electron but one proton are all that the hydrogen atom has. The uranium atom, on the other hand, has 92 protons, which translates to 92 electrons.

Net reaction:

Cl₂ + 2Fe²⁺ → 2Cl⁻ + 2Fe³⁺

Oxidation state:

0        +2         -1         +3

Because Cl's oxidation state is shifting form 0 to -1. Cl₂ is thus transformed into Cl. Fe²⁺ is oxidising to Fe³⁺ as the oxidation number of Fe changes from +2 to +3.

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Answer:

Liner shape

Explanation:

Because BeCl2 has 2 bond pair and no lone pair it means it will have liner shape and 180 degree angle.

Answer:

liner compound

Explanation:

Answer:

Convection currents are a circular current caused by the difference in temperatures from the bottom to the top of the mantle. It is because of these currents that the plates of the Earth have moved in the past and are moving today. These plate movements cause earthquakes, mountain building, and volcanism.

Explanation:

The regiochemistry of hydroboration/oxidation of alkenes is (a) Markovnikov.

The hydroboration/oxidation reaction follows Markovnikov's rule, which states that the electrophile (in this case, the boron atom) adds to the carbon atom of the double bond that has the greater number of hydrogen atoms attached to it. The regioselectivity of the reaction is determined by the relative stability of the carbocation intermediates formed during the reaction.

In hydroboration, the boron atom adds to the less substituted carbon atom of the double bond, leading to the formation of a boron-alkyl bond and a boron-hydrogen bond. Subsequently, in the oxidation step, the boron-alkyl bond is replaced with an alcohol group (-OH) while maintaining the regiochemistry established during hydroboration.

Therefore, the regiochemistry of hydroboration/oxidation of alkenes is Markovnikov, where the electrophilic addition occurs preferentially at the carbon atom of the double bond that has the greater number of hydrogen atoms attached to it.

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Answer:

it readily gains another electron. the outer electron shell is closer to the nucleus, than iodine for example, which makes it less shielded (greater attraction for another electron = violent reaction to get it)

Explanation:

Here is a list of some renewable resources, I hope these help answer the question, or help to answer it.

-ethanol

-hydropower

-geothermal power

-wind energy

-solar energy

-biomass

(Biomass refers to organic material from plants and animals)

Wind, forest, tides and geothermal energy are the resouces of renewable energy.

Renewable resources are energy sources that never run out and can provide a steady supply of clean energy.

Hence resouces of renewable energy are wind, forest, tides and geothermal energy.

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Lithium=li

Iron=Fe

Helium=He

I don't say u must have to mark my ans as brainliest but if u think it has really helped u plz don't forget to thank me....

Answer:

lithium symbol=li helium= he and iron =i

0.0112 moles of potassium ions are present in the solution.

We have,

The volume of solution, V = 56.0 mL = 0.056 L

The concentration of KCl, c = 0.200 m

The molar mass of KCl, M = 74.55 g/mole

We will calculate the mass of KCl required to make the given solution of 56.0 mL of a 0.200 M KCl solution using the below formula;

Mass = Concentration × Volume × Molar mass

= 0.200 × 0.056 × 74.55

= 0.838 g

The mass of KCl required to make the 56.0 mL of a 0.200 M KCl solution is 0.838 g.

To calculate the number of moles of potassium ions in the solution, we need to calculate the moles of KCl and multiply it with the stoichiometric factor of K⁺.

We can calculate the moles of KCl using the below formula;

Moles = Concentration × Volume

= 0.200 × 0.056

= 0.0112 moles

Now, the stoichiometric factor of K⁺ in KCl is 1.

Hence the number of moles of K⁺ is the same as the number of moles of KCl.

Therefore, 0.0112 moles of potassium ions are there in the solution.

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The concentration of dissolved oxygen in water depends on various factors such as temperature, pressure, and salinity.

However, in general, fresh water has a higher concentration of dissolved oxygen than saltwater. This is because the solubility of oxygen in water decreases with increasing temperature and salinity. Saltwater has a higher salt content and thus a higher ionic strength than fresh water, which decreases the solubility of oxygen in the water. Additionally, saltwater is denser than fresh water, which means that it holds less oxygen per unit volume. As a result, marine organisms have adapted to live with lower levels of dissolved oxygen compared to freshwater organisms. However, there are still areas in the ocean where the concentration of dissolved oxygen is high due to upwelling and mixing of deep ocean currents, such as in areas along the west coast of continents. Overall, freshwater environments tend to have a higher concentration of dissolved oxygen than saltwater environments.

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Answer:

4 valence electrons.

Explanation:

Carbon has 4 valence electrons because it is in the 14th group on the Periodic Table.

Ammonium hydroxide is considered a weak base because it produces few hydroxide ions in aqueous solution. (Option a)

Let's consider the ionization of ammonium hydroxide, which is a weak base.

NH₄OH ⇄ NH₄⁺ + OH⁻

Why is it considered a weak base?

a. it produces few hydroxide ions in aqueous solution. Yes, since it dissociates partially.

b. it produces few hydrogen ions in aqueous solution. No, since it does not produce hydrogen ions.

c. it does not conduct electricity in aqueous solution. No, since it conducts electricity, although poorly.

d. it will not take part in a neutralization reaction. No, since it will be neutralized by acids.

Ammonium hydroxide is considered a weak base because it produces few hydroxide ions in aqueous solution.

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The answer is D, Na, and Cd only. If the metals in the list below will react with 1M sulphuric acid to produce hydrogen gas.

The metals that will react with 1M H2SO4 to produce hydrogen gas are those with a reduction potential more negative than that of hydrogen. The reduction potential of hydrogen is 0.00 V. Among the given metals, only Na and Cd have reduction potentials more negative than that of hydrogen. Therefore, the correct answer is:D. Na and Cd only

Cu has a reduction potential more positive than that of hydrogen, which means that it cannot reduce H+ ions to produce hydrogen gas. Pb also has a reduction potential more positive than that of hydrogen and therefore cannot produce hydrogen gas either.

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Explanation:

Answer:

Warming it would make it come out. On a cold day the honey is frozen and atoms will not move as fast and are close toghether. When you warm it the atoms will move faster and the honey will come out of the bottle

Explanation:

Total pressure of the basketball is approximately 2.02 atmospheres.

To find the total pressure of the balloon in atmospheres, we need to first add the partial pressures of helium and nitrogen together. The sum of the partial pressures is the total pressure of the mixture inside the balloon.
Therefore, the total pressure inside the balloon is:
822 mmHg (partial pressure of helium) + 712 mmHg (partial pressure of nitrogen) = 1534 mmHg
To convert this pressure to atmospheres, we need to divide by the standard atmospheric pressure of 760 mmHg:
1534 mmHg ÷ 760 mmHg/atm = 2.02 atm
Therefore, the total pressure inside the balloon is 2.02 atmospheres.
It's worth noting that the partial pressure of each gas in the mixture is directly proportional to its mole fraction in the mixture. If we knew the mole fractions of helium and nitrogen in the balloon, we could calculate their partial pressures using the ideal gas law.

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Shielding is a term used to describe the ability of inner electrons to shield or reduce the effective nuclear charge (Zeff) experienced by the valence electrons in an atom.

The number of valence electrons and the outermost energy level (also known as the primary quantum number or n value) are the same for all elements in a periodic table group (or column). This indicates that the valence electrons in all of the group's atoms have comparable energy levels and shielding effects from the inner electrons. As a result, the number of energy levels, or the primary quantum number (n), and the shielding effect of the inner electrons dictate the trend in atomic radius within a group.

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Answer:

based on what you know about prokaryotic cells and eukaryotic cells the bacterial cell shown in the venn diagram below is a prokaryotic cell while the fungal cell is a eukaryotic

Explanation:

hope it help and if it doesnt sorry ;)

Answer:

2H₂O₂

Number of molecules: 2

Number of elements: 2 (hydrogen and oxygen)

Number of atoms: 6 (2 hydrogen and 4 oxygen)

4HCI

Number of molecules: 4

Number of elements: 2 (hydrogen and chlorine)

Number of atoms: 8 (4 hydrogen and 4 chlorine)

3CH₂

Number of molecules: 3

Number of elements: 1 (carbon and hydrogen)

Number of atoms: 9 (3 carbon and 6 hydrogen)

C₂H₁2O6

Number of molecules: 1

Number of elements: 3 (carbon, hydrogen, and oxygen)

Number of atoms: 20 (2 carbon, 12 hydrogen, and 6 oxygen)

5CaCl₂

Number of molecules: 5

Number of elements: 2 (calcium and chlorine)

Number of atoms: 30 (10 calcium and 20 chlorine)

NaCl

Number of molecules: 1

Number of elements: 2 (sodium and chlorine)

Number of atoms: 2 (1 sodium and 1 chlorine)

6NH3

Number of molecules: 6

Number of elements: 2 (nitrogen and hydrogen)

Number of atoms: 18 (6 nitrogen and 18 hydrogen)

3H₂O

Number of molecules: 3

Number of elements: 2 (hydrogen and oxygen)

Number of atoms: 9 (6 hydrogen and 3 oxygen)

2Fe₂O3

Number of molecules: 2

Number of elements: 2 (iron and oxygen)

Number of atoms: 20 (8 iron and 12 oxygen)

8CO

Number of molecules: 8

Number of elements: 2 (carbon and oxygen)

Number of atoms: 16 (8 carbon and 8 oxygen)

Formula

\(\ell=\frac{n h}{2 \pi}\)

\(\ell = angular \: momentum\)

\(n = principal quantum number \\ h = Planck's constant \\ \pi = pi\)

However, it is important to note that this comparison may not accurately reflect the actual volume difference between the atom and the "b" parameter.

When comparing the volume of an atom to the "b" parameter, it may not be fair to make a direct comparison. This is because when packing a mole of atoms as close as possible, there will be some "in-between" space.

This can make the volume of the "b" parameter appear greater than the volume of the atom.

In the hexagonal close pack structure, the volume taken up by a sphere of radius r can be calculated using the formula vhcp.

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The question is about the comparison of volume between an atom and the 'b' parameter.

The subject of this question is Chemistry. It pertains to the comparison of the volume of an atom to the 'b' parameter. When packing a mole of atoms as close as possible, there is some 'in-between' space, which causes the volume of the 'b' parameter to appear greater than the volume of the atom.

An example of this is the hexagonal close pack structure, where the volume taken up by a sphere of radius r can be calculated using the formula vhcp.

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Between A and B

The highest probability is that A and B are solids and they are forming liquid or gases.

Between A and C

Highest probability is that A and C are gases and they are turning into liquid or solid

Answer:

Phosphorus

Explanation:

Group 5A has 5 valence electrons.

3 electron shells equals 15 electrons on Phosphorus. Furthermore, 2 on shell 1, 8 on shell 2, and 5 on shell 3.

- Hope that helps! Please let me know if you need further explanation.

The process in the petroleum industry involves bringing oil and gas to the surface, converting crude oil into other products, and selling those products to customers. The correct choice is B. upstream; downstream.

In the petroleum industry, the process can be divided into three main sectors: upstream, midstream, and downstream. Upstream activities involve the exploration and extraction of crude oil and natural gas from underground reserves. This includes locating oil and gas deposits, drilling wells, and bringing the oil and gas to the surface.

Once the oil and gas are extracted, the midstream sector comes into play. Midstream activities involve the transportation, storage, and processing of the crude oil and natural gas. This includes pipelines, storage tanks, and facilities that separate the oil and gas into different components.

Finally, the downstream sector involves refining the crude oil into various products and selling those products to end consumers. Downstream activities include refining, petrochemical production, distribution, and marketing of the final petroleum products, such as gasoline, diesel, jet fuel, lubricants, and various other chemicals.

Therefore, in the given scenario, the correct choice is B. upstream; downstream, as it represents the process of bringing oil and gas to the surface (upstream) and then converting crude oil into other products and selling them to customers (downstream).

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In the given atomic model, the strong nuclear force occurs inside the nucleus. Option D is correct.

The strong nuclear force is one of the fundamental forces of nature and it acts on particles called quarks, which are the building blocks of protons and neutrons. This force is responsible for holding the nucleus of an atom together.

Inside the nucleus, protons and neutrons are tightly bound to each other by the strong nuclear force. It overcomes the electrostatic repulsion between the positively charged protons, preventing the nucleus from disintegrating. The strong nuclear force is extremely powerful but short-ranged, meaning it acts only at very short distances within the nucleus.

Outside the nucleus, in the electron cloud, other forces such as electromagnetic forces and gravitational forces dominate the interactions. However, within the nucleus, the strong nuclear force is responsible for binding the protons and neutrons together, maintaining the stability of the atomic nucleus.

Hence, D. is the correct option.

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--The given question is incomplete, the complete question is

"In the following atomic model, where does the strong nuclear force happen? A) outside a B) between a and b C) between b and c D) inside c."--

Answer:

Q=M,L,T then MLT is called the dimension formula and the components a,b,c are called the dimension

Maintaining close control over the temperature at which municipal solid waste is burned in an incinerator minimizes the emission of harmful pollutants, such as dioxins, furans, and particulate matter.

Maintaining close control over the temperature at which municipal solid waste is burned in an incinerator minimizes the emission of harmful pollutants and greenhouse gases. This is because high temperatures promote complete combustion, which results in fewer emissions of harmful substances such as carbon monoxide, nitrogen oxides, and volatile organic compounds. By minimizing emissions, incineration becomes a more environmentally friendly option for managing solid waste.

Maintaining close control over the temperature at which municipal solid waste is burned in an incinerator minimizes the emission of harmful pollutants, such as dioxins, furans, and particulate matter. By ensuring the incineration process occurs at optimal temperatures, the combustion of solid waste is more complete, reducing the amount of harmful emissions released into the atmosphere.

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Maintaining close control over the temperature at which municipal solid waste is burned in an incinerator minimizes the emission of pollutants such as dioxins, furans, and volatile organic compounds (VOCs).

Maintaining close control over the temperature at which municipal solid waste is burned in an incinerator minimizes the emission of harmful pollutants, such as dioxins, furans, and nitrogen oxides (NOx). By controlling the temperature and ensuring optimal combustion conditions, the formation of these pollutants can be reduced, leading to a cleaner and more environmentally friendly incineration process.

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Answer:

Clean the microscope after each use. ...

Handle glass slides carefully. ...

Turn off the light source when the microscope is not in use. ...

Be aware if your microscope has a mercury lamp. ...

When carrying the microscope, always use two hands with one hand supporting the base and theother hand holding the arm.

Explanation:

:)

A 3.00-L container with O₂ at 4.00 atm is connected to a 2.00-L container with Ne at 2.00 atm, resulting in a final pressure of 3.20 atm in the container.

We have 2 containers connected by a valve.

One container has a volume of 3.00 L and contains O₂ at 4.00 atm. The other container has a volume of 2.00 L and contains Ne at 2.00 atm.

When the valve is opened, the total volume is the sum of the 2 containers.

\(V_2 = 3.00 L + 2.00 L = 5.00 L\)

Assuming constant temperature and ideal behavior, we can calculate the final pressure of each gas using Boyle's law.

O₂

\(P_1 \times V_1 = P_2 \times V_2\\\\P_2 = \frac{P_1 \times V_1}{V_2} = \frac{4.00atm \times 3.00L}{5.00L} = 2.40atm\)

Ne

\(P_1 \times V_1 = P_2 \times V_2\\\\P_2 = \frac{P_1 \times V_1}{V_2} = \frac{2.00atm \times 2.00L}{5.00L} = 0.800atm\)

The final pressure in the container will be the sum of the final pressures of the gases.

\(P = 2.40 atm + 0.800 atm = 3.20 atm\)

A 3.00-L container with O₂ at 4.00 atm is connected to a 2.00-L container with Ne at 2.00 atm, resulting in a final pressure of 3.20 atm in the container.

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Answer:

4. I think that they started with water that was the same tsmpurature because if they didnt start with the same temp of water then it would be harder to tell which one was better. and could hold the most heat.

5. yes i think it would matter, because if you have more water in one cup it might stay warmer than it would with the cups with less water, and if it was thicker it would hold mor heat because it is not so thin that the heat is just gonna come out it has to come through more for the heat to get out.

Explanation:

sorry if these are to long but thats how i would answer them.

hope it helped

Answer: Near the Protons. The electron structure of bromine is illustrated above. In chemical reactions, how does the valence configuration of Bromine tend to change? ... It loses one electron.

Explanation:

btw i found that on google lol