7. Put the following elements in order from smallest to largest atomic radius and explain
why:
C.0, Sn, Sr​

The concept of energy balance refers to the equilibrium between the energy input into a system and the energy output from that system. It is based on the principle of conservation of energy, which states that energy cannot be created or destroyed but can only be transferred or transformed from one form to another.

In terms of human energy balance, it involves the energy intake from food and beverages (energy in) and the energy expenditure through basal metabolic rate, physical activity, and other bodily processes (energy out). When the energy intake matches the energy expenditure, there is an energy balance. However, when there is an imbalance, either an excess or deficit of energy, it can lead to weight gain or weight loss, respectively.

For example, if a person consumes 2000 calories (energy in) through their diet and expends 2000 calories (energy out) through their daily activities and bodily functions, they maintain an energy balance. This means that the energy intake is equal to the energy expenditure, and their weight remains stable.

On the other hand, if a person consumes 2500 calories (energy in) but only expends 2000 calories (energy out), there is a positive energy balance. The excess energy is stored in the body as fat, leading to weight gain over time.

Conversely, if a person consumes 1500 calories (energy in) but expends 2000 calories (energy out), there is a negative energy balance. The body needs to compensate for the energy deficit by utilizing stored energy reserves, such as fat, resulting in weight loss.

Support for the concept of energy balance comes from scientific studies on weight management and obesity. It has been shown that maintaining an energy balance is crucial for weight maintenance, while sustained positive or negative energy balances can lead to weight changes. Additionally, energy balance plays a role in various physiological processes, including metabolism, hormone regulation, and overall health.

By understanding and managing energy balance, individuals can make informed decisions regarding their diet, physical activity, and lifestyle to achieve and maintain a healthy weight and overall well-being.

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Answer:

Solid ionic compounds do not conduct electricity because the ions are held firmly in place. The ions cannot move to conduct the electric current. But when an ionic compound melts, the charged ions are free to move. Therefore, molten ionic compounds do conduct electricity.

Solid lithium nitride conducts electricity and is used in batteries. The solid lithium nitride not to conduct electricity because a solid ionic compound does not conduct electricity because the ions are not free to move.

The term ionic compound is refer to neutral compounds made up of positively charged ions called cations and negatively charged ions called anions.

Because the electrostatic forces are weakened, the ions are no longer held together in a lattice. As a result, the ions are free to move throughout the structure and carry the charge.

The ions are firmly held in place, solid ionic compounds do not conduct electricity. Ions cannot move in order to conduct an electric current. When an ionic compound melts, however, the charged ions become free to move. So, molten ionic compounds conduct electricity.

Thus, a solid ionic compound does not conduct electricity because the ions are not free to move.

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In the important industrial process for producing ammonia (the Haber Process), the overall reaction is:

N2(g) + 3H2(g) → 2NH3(g) + 100.4 kJ

A yield of NH3 of approximately 98% can be obtained at 200°C and 1,000 atmospheres of pressure.

This reaction is: Endothermic

Ferrihydrite in forest soil at pH=5 is more likely to sorb benzene than 2,4-D. At pH=4, the sorption potential of 2,4-D to ferrihydrite may be enhanced due to increased positive charge on the surface of the hydroxide.

Ferrihydrite, a type of iron oxide, has the ability to sorb organic compounds through various mechanisms such as surface complexation, hydrogen bonding, and hydrophobic interactions. Benzene, being a non-polar compound, is more likely to sorb to ferrihydrite due to hydrophobic interactions and weak van der Waals forces. On the other hand, 2,4-D, being a polar compound, may have limited sorption to ferrihydrite at pH=5 due to the dominance of repulsive interactions between the negatively charged surface of ferrihydrite and the negatively charged 2,4-D molecule.

At pH=4, the increased positive charge on the surface of ferrihydrite enhances the sorption potential of 2,4-D. The positive charge can attract and bind with the negatively charged 2,4-D molecule through electrostatic interactions. This can result in increased sorption of 2,4-D to ferrihydrite in tropical soils like Qxisol.

Conversely, at pH=9, the increased pH results in a decrease in the positive charge on the surface of ferrihydrite. This reduction in positive charge limits the sorption potential of 2,4-D as the electrostatic attraction between the hydroxide and the 2,4-D molecule decreases. This suggests that in arid soils like Aridisol, characterized by higher pH levels, the sorption potential of 2,4-D to ferrihydrite may be lower compared to humid climates.

The sorption potential of 2,4-D as a function of soil type in humid vs. arid climates can be predicted by considering the pH of the soil. Higher pH in arid soils can lead to reduced sorption of 2,4-D to hydroxides like ferrihydrite or goethite, while lower pH in humid soils can enhance the sorption potential due to increased positive charge on the hydroxide surface.

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Answer:

The extent of carbon emission to the atmosphere will reduce thereby decreasing the amount of carbon that is released into the atmosphere in the carbon cycle if we all use bicycles instead of driving around our neighborhood.

If we choose to turn our appliances off, less coal is extracted and burnt to generate energy thereby also reducing the extent of carbon dioxide emission.

Explanation:

The carbon cycle may be defined as all the sequence of processes that involve the interconversion of carbon compounds to various species in nature. It refers to process such as; incorporation of carbon dioxide into living tissue by photosynthesis and ingestion of organic matter by animals, its return to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels.

Fossil fuels are generally a very important source of energy. Both gasoline and coal are fossil fuels. The disadvantage of fossil fuels is that the use of fossil fuels increases the concentration of CO2 gas returned to the atmosphere as part of the carbon cycle. This increased CO2 level in the atmosphere leads to greenhouse effect and global warming.

If I and all my neighbors decide to turn off our appliances when they are not in use, less energy is consumed and less coal is burnt for energy thereby reducing the amount of carbon dioxide that is emitted back to the atmosphere in the carbon cycle.

Similarly, if we all ride bicycles while running errands around our neighborhood, less gasoline is burnt as fuel and less carbon dioxide is emitted back into the atmosphere in the carbon cycle.

If less carbon dioxide is emitted into the atmosphere, less carbon dioxide will be available for photosynthetic organisms to take in and this may affect the primary productivity along the food chain. Since plants act as a carbon dioxide sink nature, less carbon dioxide emission will imply less photosynthesis

Answer:

jellyfish

Explanation:

Answer: i would say jellyfish

Explanation:

just because this guy said so

Answer:

The electronic configuration of iron is: Ar3d64s2. the two electrons in the 4s orbital are paired, and two of the electrons in the 3d orbitals are paired leaving four unpaired electrons. In general when you are populating the p, d, f, etc

Explanation:

hope dis help

The answer is option 4: one unshared electron and six bonding electrons exist around the central atom in ozone (O3).

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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

\(n = \frac{3.6 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 5.98006644...\)

We have the final answer as

Hope this helps you

Answer:

I think it is C

Explanation:

We have that the reaction and a decrease in the concentration of the reactants will favor the reverse reaction that is the decomposition of the yellow iodine trichloride and the formation of green chlorine gas and brown iodine chloride

Given that some green chlorine gas, which is part of the reactant, will be removed, the reverse reaction will be favored and initial concentration of the yellow iodine trichloride and the green chlorine gas will be reduced while the proportional concentration of the brown iodine chloride will increase and the mixture will become more brown.

Answer:

d because you don't like math or any subject

The compound C2H2(OH)2 has a linear structure with two carbon atoms in the middle. Each carbon atom is bonded to two hydrogen atoms above and below, and to a hydroxyl group (-OH) on the left and right.

The molecular formula C2H2(OH)2 indicates that the compound contains two carbon atoms, two hydrogen atoms, and two oxygen atoms. The linear structure is the most stable arrangement of these atoms, as it minimizes the electron-electron repulsion between the lone pairs on the oxygen atoms. The hydroxyl groups are also arranged in a way that minimizes the electron-electron repulsion between the oxygen atoms and the hydrogen atoms.

The resulting structure should be a linear molecule with two carbon atoms in the middle, each bonded to two hydrogen atoms above and below, and to a hydroxyl group on the left and right.

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Answer:

Final T = 298.7K

Explanation:

In this problem, the heat given for the iron is equal to the heat that water absorbs. Using the equation:

Q = C*m*ΔT

Where Q is heat given = 270000J

C is specific heat of substance = 0.385J/gK

m is mass of iron = 1000g

ΔT is change in temperature = Initial temperature - Final temperature.

270000J = 0.385J/gK*1000g*(1000K-Final temperature)

701.3J/K = 1000K - Final T

Explanation:

P_H

and

li_n

hope it helps

answer: heat needed=18,300

expanation

Answer:

There is a hack in forms that forms gives u the answer hold ctrl + u, and scrool to the bottom he read the part with the question and there will be an answer.

Mark as brainliest if im right good luck

Answer:

The elements of groups 13, 14, 15, 16, 17, 18 are called p block elements.examples: boron (B), aluminium (Al), gallium (Ga), indium (In), thallium (Tl),and so on

Explanation:

The mass of water (H₂O) needed to meet the oxygen demand is 191587.5 g

2H₂ + O₂ —> 2H₂O

Molar mass of O₂ = 16 × 2 = 32 g/mol

Mass of  O₂ from the balanced equation = 1 × 32 = 32 g

Molar mass of H₂O = (2×1) + 16 = 18 g/mol

Mass of H₂O from the balanced equation = 2 × 18 = 36 g

SUMMARY

From the balanced equation above,

32 g of O₂ reacted to produce 36 g of H₂O

From the balanced equation above,

32 g of O₂ reacted to produce 36 g of H₂O

170300 g of O₂ will react to produce = (170300 × 36) / 32 = 191587.5 g of H₂O

Thus, 191587.5 g of H₂O is needed to meet the oxygen demand

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1. Water flows through the penstock

2. The water then spins the blades in a turbine which, in turn, spins a generator that ultimately produces electrical energy

Hydropower, or hydroelectric power, is one of the oldest and largest sources of renewable energy, which uses the natural flow of moving water to generate electrical energy. The moving water is passed through a pipe also known as penstock, it then turns the blade of the turbine. which then rolls or spin a generator thereby electricity is produced.

The work of the turbine is to convert the kinetic energy of the running water into useable energy.

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The characteristics which are necessary for a location to be suitable for chemical storage are:

Chemical storage as the name implies refers to the storage of controlled substances or hazardous materials as the case may be in chemical stores, chemical storage cabinets, or similar devices.

On this note, the characteristics which are necessary for a location to be suitable for chemical storage are as listed above.

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The characteristics required for suitable chemical storage include dark, dry, and cool.

In conclusion, the characteristics required for suitable chemical storage include dark, dry, and cool.

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110 grams of baking soda is approximately equal to 1.31 moles.

To determine the number of moles in 110 grams of baking soda (NaHCO3), we need to use the molar mass of NaHCO3, which is calculated by adding the atomic masses of each element in the compound.

The molar mass of sodium (Na) is approximately 22.99 g/mol, the molar mass of hydrogen (H) is approximately 1.01 g/mol, the molar mass of carbon (C) is approximately 12.01 g/mol, and the molar mass of oxygen (O) is approximately 16.00 g/mol.

Now we can calculate the molar mass of NaHCO3:

Na: 1 * 22.99 g/mol = 22.99 g/mol

H: 1 * 1.01 g/mol = 1.01 g/mol

C: 1 * 12.01 g/mol = 12.01 g/mol

O: 3 * 16.00 g/mol = 48.00 g/mol

Adding these values together:

22.99 g/mol + 1.01 g/mol + 12.01 g/mol + 48.00 g/mol = 84.01 g/mol

Therefore, the molar mass of NaHCO3 is 84.01 g/mol.

To find the number of moles, we can use the formula:

moles = mass / molar mass

Substituting the given mass of 110 grams and the molar mass of 84.01 g/mol into the formula:

moles = 110 g / 84.01 g/mol ≈ 1.31 moles

Hence, 110 grams of baking soda is approximately equal to 1.31 moles.

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The density of a cube of metal with 2 inches on a side and weighs 444.5 grams is 3.390 g/cm³. Hence, option A is correct.

Density is the measurement of how tightly a material is packed together.

Given data:

Weight =444.5 grams

Side = 2 inches= 5.08 cm

Volume = 5.08 cm x 5.08 cm x 5.08 cm

Density = \(\frac{Mass}{Volume}\)

Density = \(\frac{444.5 \;grams}{131.09 cm^3}\)

Density = 3.390 g/cm³

Hence, the density of a cube of metal with 2 inches on a side and weighs 444.5 grams is 3.390 g/cm³.

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The weight of each stopper can vary based on the material, size, and manufacturing process used, so it is not possible to determine the number of rubber stoppers needed without more information.

Weight is a measure of the force of gravity on an object and is typically measured in units of Newtons (N), pounds (lb), or kilograms (kg).

Average weight, on the other hand, refers to the sum of the weights of a group of objects divided by the number of objects in the group. It provides an estimate of the typical or central value of the weights in the group. The units of average weight are the same as the units used to measure weight.

The number of rubber stoppers needed to contain the same number of stoppers as there are corks in 1.0 kg of corks would depend on the average weight of each type of stopper.

The weight of each stopper can vary based on the material, size, and manufacturing process used, so it is not possible to determine the number of rubber stoppers needed without more information.

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Answer:

Explanation:

In first picture,

When rock was not in the cylinder,

Volume of water

\( = {18cm}^{3} \)

In second picture,

When rock is in the cylinder,

Volume of water

\( = {36cm}^{3} \)

Hence,

Volume of rock

\( = 36 {cm}^{3} - {18cm}^{3} \)

\( = 18 {cm}^{3} (ans)\)

The cycloalkane with the least ring strain is cyclohexane. Cyclohexane has the least ring strain among the given options.

This is because cyclohexane has a chair conformation, which allows for the most stable arrangement of its carbon atoms. In the chair conformation, each carbon atom is bonded to two neighboring carbons in a zigzag pattern, minimizing the bond angles and torsional strain. Additionally, the hydrogen atoms attached to the carbon atoms alternate between an axial and equatorial position, reducing steric hindrance. This conformation results in a more stable and less strained ring structure compared to cyclopropane, cyclopentane, and cycloheptane.

Cyclopropane has the most ring strain due to its high angular strain caused by the bond angles of approximately 60 degrees. Cyclopentane has some ring strain but is more stable than cyclopropane due to its bond angles of approximately 108 degrees. Cycloheptane, on the other hand, experiences torsional strain and steric hindrance due to its seven-membered ring structure. Therefore, cyclohexane, with its chair conformation, has the least ring strain among the given options.

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Answer:

A: true.

B: true.

C: false

D: true.

Explanation:

Light is an electromagnetic wave which travels regardless of whether there is medium. sound is a wave disturbance in medium meaning it must have matter. Also light is much faster then sound.

Answer:

I want to say its Lonic Bonding.

Explanation:

Ionic bonding is the complete transfer of valence electron(s) between atoms.

Answer:

Multicellular

Explanation:

Prokaryotic cells are unicellular because the do not have a nucleus and lack organelles, while eukaryotic cells do have a nucleus, have organelles, and are are multicellular. :)

Organisms that are made up of prokaryotic cells are NOT

Multicellular.

Living organisms can be classified based on their cellular organisation.

Organisms that are made up of one cell are known as unicellular organisms.

Organisms that are made up of more than one cell are known as multicellular organisms.

A prokaryote is an organism that lacks distinct nucleus while eukaryote is an organism that possess a nucleus that is enclosed in a nuclear envelope.

While prokaryotes are always unicellular organisms, eukaryotes can be either unicellular or multicellular.

Therefore, organisms that are made up of prokaryotic cells are not multicellular.

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Answer:

Makes converting easier

Explanation:

Answer:

es la primera niña tonta y fea

Answer:

Sulfur tetra fluoride

Explanation: