What is the net force on a car stopped at a stop sign?

Answer:

Hi this is Adhira please make me as brainlist

Explanation:

The nutritional status indicators for the CDC Growth Charts include obesity, overweight, underweight, and short stature. Percentiles are used to rank an individual or a group on a growth chart and indicate where either fits in the context of the reference population

From one of the most acidic via least acidic, these compounds' bold-faced hydrogens are II > III > V > IV > I.

Why do you use the word "acidity"?

Acidity explains how much acid is present in a material. An acid is a substance that releases hydrogen ions into water and reacts with certain metals to generate salts.

According to the given question:

The strong acids are those which completely ionizes in the aqueous solution. the strong acid will losses more H⁺ ion when it dissolved in the water. The weak acids are those which are partially ionizes in the aqueous solution.  the strong acid will losses few H⁺ ion when it dissolved in the water.

Therefore from most acidic via least acidic, these compounds' bold-faced hydrogens are II > III > V > IV > I.

The complete question is-

Rank the bold-faced hydrogens for the following compounds from most acidic to least acidic. (Attachment below for options)

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A carbon-hydrogen bond in ethane (CH3CH3) is best described essentially nonpolar. Option B is correct.

A nonpolar bond is one in which electrons are shared equally between atoms.In Ethane, the carbon atom has four valence electrons, while the hydrogen atom has one valence electron. The carbon atom forms four covalent bonds to the hydrogen atoms. Since the hydrogen atoms are equivalent, all of the carbon-hydrogen bonds are identical.

Each of the carbon-hydrogen bonds has a bond distance of 109.5°.Ethane is a hydrocarbon with the formula C2H6. It is an alkane with two carbon atoms. It's also known as a saturated hydrocarbon because all of its carbon atoms are bonded to as many hydrogen atoms as possible. Because of this, it contains only single bonds between atoms.Each carbon in ethane is surrounded by four other atoms and has a tetrahedral geometry.

Since the electronegativity of carbon and hydrogen atoms is quite close, the carbon-hydrogen bonds in ethane are nonpolar and symmetric. Because the electronegativity values of carbon and hydrogen are close, there is no significant polarity between the carbon-hydrogen bonds. Therefore, the carbon-hydrogen bond in ethane is best described as essentially nonpolar.

Therefore, Option B is correct.

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When an asteroid enters the surface of the earth, it gets shattered. The core of a shattered asteroid contains pure metals such as iron and nickel.

Asteroids are present in space in the form of large rocks. The rocks are made up of minerals and metals. Asteroids revolve around the sun in an orbit. Asteroids are also known as small planets. Therefore, these asteroids are made up of materials similar to that of a planet.

Asteroids can be divided into 3 categories:

1) C- Type:- These asteroids contain clays and stony particles.

2) S- Type:- The asteroid will contain silicates and a composition of nickel-iron metal.

3) M-Type:- These have nickel and iron metals.

Along with these materials, dirt and dust are also found inside these small planets.

The correct answer is (C).

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Answer:

24

Explanation:

Answer:

C

Explanation:

Answer:

The awnser is C: it tells you how much of a molecule IS up of each element.

The partial pressure of hydrogen gas collected over water at a temperature of 25°C and a room pressure of 786 mmHg is 761 mmHg.

When a gas is collected over water, the total pressure in the collection vessel is the sum of the partial pressure of the gas and the vapor pressure of water at that temperature. The vapor pressure of water varies with temperature and can be found in vapor pressure tables.

In this case, the vapor pressure of water at 25°C is given as 25 mmHg. Therefore, the total pressure in the collection vessel is 786 mmHg, which includes the partial pressure of hydrogen and the vapor pressure of water. To determine the partial pressure of hydrogen, we need to subtract the vapor pressure of water from the total pressure:

Partial pressure of hydrogen = Total pressure - Vapor pressure of water

Partial pressure of hydrogen = 786 mmHg - 25 mmHg

Partial pressure of hydrogen = 761 mmHg

Therefore, the partial pressure of hydrogen gas collected over water at 25°C and a room pressure of 786 mmHg is 761 mmHg.

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Answer:

uhm

Explanation:

Answer:

La reacción se convierte en reversible porque en un recipiente cerrado el gas no escapa y puede reaccionar con el óxido

Explanation:

Basados en la reacción:

3Fe + 4H₂O → Fe₃O₄ + 4H₂(g)

3 moles de hierro con 4 moles de agua producen 1 mol de óxido de hierro y 4 moles de hidrógeno (gas)

Cuando la reacción se está produciendo con un recipiente abierto, todo el gas de hidrógeno está escapando a la atmósfera y no habrá forma de que reaccione con el óxido de hierro.

Pero, si el recipiente está cerrado, el hidrógeno no podrá escapar y podrá reaccionar con el óxido de hierro, así:

Fe₃O₄ + 4H₂(g) → 3Fe + 4H₂O

De esta manera,

Answer:

You can make Cake CAke Cake Cake and other stuff too Ig

Explanation:

Answer:

Vascular tissue is made of two specialized conducting tissues: xylem and phloem. Xylem tissue transports water and nutrients from the roots to different parts of the plant, and also plays a role in structural support in the stem.

To recognize a poisoning pattern, groups of drugs with similar actions, symptoms, and clinical signs are examined. These common signs and symptoms are referred to as the toxidrome. Hence, the correct option is (d) toxidrome.

What is a toxidrome?

A toxidrome is a group of symptoms and clinical signs that suggest a particular type of poisoning. In the presence of drug-induced toxicities, it is particularly useful for guiding therapeutic decision-making. The clinical signs and symptoms seen in toxidrome reflect the pharmacology of the toxicant, the dose of the toxicant, and the affected organ systems.

Toxidrome pattern

Toxidrome can be divided into five patterns, each of which is associated with a certain type of drug toxicity.

1. Cholinergic toxidrome

2. Anticholinergic toxidrome

3. Sympathomimetic toxidrome

4. Opioid toxidrome

5. Sedative-hypnotic toxidrome

What are the symptoms of a toxidrome?

The following are some of the symptoms that are common in most of the toxidromes:-

Ataxia-Mydriasis-Tachycardia-Tremors-Seizures-Agitation or confusion-Coma or decreased level of consciousness-Respiratory depression or arrest-Bradycardia and hypotension

Toxidrome is a useful tool in drug toxicity management because it can assist clinicians in determining the cause of the poisoning and the best treatment for it.

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The equation that is a decomposition reaction is

PbCO3(s) ---> PbO(s) + CO2(g)

That is option D. The properties of a decomposition reaction can further be understood below.

A chemical reaction is defined as the combination of substances called reactants to form a product. The various types of chemical reaction include:

Decomposition reaction is that type of chemical reaction in which the reactant breaks down to form two or more products.

Therefore the heating of lead (II) carbonate is a decomposition reaction.

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Water is the "main answer" because it's so important for life. As a universal solvent, it's capable of dissolving a wide range of substances.

Additionally, it's adhesive and cohesive properties give it the ability to cling to other substances. It's also able to regulate temperature. Water has a number of biological functions as well, including aiding in metabolic reactions, transporting nutrients, and lubricating organs and tissues. Salts are compounds made of ions that form through the neutralization reaction between an acid and a base. Electrolytes are ions or compounds that produce ions when dissolved in water. Acids are compounds that donate hydrogen ions, while bases are compounds that accept hydrogen ions.

The pH scale measures the acidity or basicity of a solution. The scale ranges from 0 to 14, with 7 being neutral, numbers lower than 7 indicate acidity, and numbers higher than 7 indicate basicity. Solutions become more acidic when the concentration of hydrogen ions increases, and more basic when the concentration of hydroxide ions increases. Acid-base homeostasis is the maintenance of a stable pH in the body. Buffers help to maintain homeostasis by either accepting or donating hydrogen ions to keep the pH within a normal range. The carbonic acid-bicarbonate system is an important buffer system in blood.

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Answer: Each molecule has a characteristic size and shape that determines its function in the living cell

Explanation:

The shapes of molecules are determined by the positions of the atoms' orbitals. When an atom forms covalent bonds, the orbitals in its valence shell are rearranged.

ANSWER

Option C

EXPLANATION

Given that;

In the reaction above, we have the following data

At the reactants side;

3 atoms of manganese

4 atoms of nitrogen

1 atom of sodium

1 atom of fluorine

At the products side

1 atom of manganese

4 atoms of fluorine

3 atoms of sodium

1 atom of nitrogen

To balance the above equation, apply the law of conservation mass

Law of conservation of mass states that matter can neither be created nor destroyed but can e transformed from one formato another.

To balance the equation, 1 mole of Mn3N4 reacts with 12 moles of Na Tto give 3 moles of MnF4 and 4 moles of Na3N

So, the new equation becomes

The following data can be deduced in the above equation

At the reactants side

3 atoms of Mn

4 atoms of N

12 atoms of Na

12 atoms of F

At the products side

3 atoms of Mn

12 atoms of F

12 atoms of Na

4 atoms of N

Looking atthe vabove data, the number of atoms of each element at the reactants side is equal to the number of atoms of same elements at the products side.

Hence, the correct answer is option Ce

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The molecule CH3CH(CH3)CH2C(CH2CH3)2CHOCH3CH(CH3)CH2C (CH2CH3)2CHO, is a complex organic compound. it seems there might be an error in the molecular formula provided.

As the molecule seems to be repeating in a pattern. It is unclear whether the molecule has a specific systematic name or if it contains any functional groups. Without a clear structural formula or systematic name, it is not possible to draw an accurate Lewis structure for the given molecule.

The Lewis structure is based on the connectivity of atoms and the arrangement of electrons. Without proper information about the connectivity and specific atoms involved, it is not possible to provide an accurate representation. If you have any additional information or can clarify the structure or systematic name of the molecule.

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To determine the direction of heat flow in each scenario, we need to consider the temperature difference between the objects involved.

Heat always flows from an object at a higher temperature to an object at a lower temperature until thermal equilibrium is reached.

1. A glass of ice water:

In this scenario, the glass of ice water consists of two components: the ice and the water. The ice has a temperature below 0°C (32°F), while the water is at or slightly above 0°C (32°F). The surroundings, including the air and the glass, are generally at a higher temperature than the ice.

Heat flow: The heat flows from the surroundings (air and glass) to the ice and water to increase their temperature and melt the ice. Therefore, heat flows into the glass of ice water.

2. Ice cube to tap water:

In this scenario, the ice cube is at a temperature below 0°C (32°F), while the tap water is typically at room temperature or slightly higher.

Heat flow: The heat flows from the tap water to the ice cube because the tap water has a higher temperature than the ice cube. The heat from the water raises the temperature of the ice cube, causing it to melt. Therefore, heat flows into the ice cube from the tap water.

3. Tap water to ice cube:

In this scenario, the tap water is at room temperature or slightly higher, while the ice cube is at a temperature below 0°C (32°F).

Heat flow: The heat flows from the ice cube to the tap water because the tap water has a lower temperature than the ice cube. The heat from the ice cube lowers the temperature of the tap water, causing it to cool down. Therefore, heat flows out of the ice cube to the tap water.

In summary:

- In a glass of ice water, heat flows into the glass of ice water.

- In the interaction between an ice cube and tap water, heat flows from the tap water to the ice cube.

- In the interaction between tap water and an ice cube, heat flows from the ice cube to the tap water.

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At equilibrium, the forward and reverse reactions move at the same rate. This means that the rate of the forward reaction is equal to the rate of the reverse reaction.

In chemistry, equilibrium refers to a state in which the forward and reverse rates of a chemical reaction are equal, meaning that the concentrations of reactants and products are no longer changing over time. At equilibrium, the rate of the forward reaction is exactly balanced by the rate of the reverse reaction, resulting in a stable system that is often characterized by the specific values of concentration, pressure, or temperature. Equilibrium can be reached in a chemical reaction when the reactants are consumed and converted into products, and the concentration of the reactants and products reach a constant value. At this point, the reaction is said to be at dynamic equilibrium, where the rate of the forward reaction is equal to the rate of the reverse reaction.

Here,

At this point, the concentrations of reactants and products remain constant and there is no further net change in the amounts of these substances. This is known as dynamic equilibrium, and it is a state in which the rate of the forward and reverse reactions are balanced, and the system is in a stable state. Therefore, the answer to your question is that "The forward and reverse reactions move at the same rate" represents the rate of reaction at equilibrium.

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The NOGO gage diameter of 5075 is suitable to test if a cylindrical hole with 503-507 violates its LMC boundary.

In the given scenario, we have a cylindrical hole with a specified LMC (Least Material Condition) boundary of 503-507. We need to determine the suitable NOGO gage diameter to test if the hole violates this boundary.

The LMC boundary indicates the lower and upper limits of the hole diameter. For the hole to be within the LMC boundary, its diameter must be between 503 and 507.

Among the provided options, the NOGO gage diameter of 5075 is suitable because it has a diameter greater than the upper limit of the LMC boundary (507). By using this gage, we can check if the hole diameter exceeds the maximum allowed value.

The NOGO gage diameter of 5075 is suitable to test if a cylindrical hole with 503-507 violates its LMC boundary. This is because the gage diameter exceeds the upper limit of the LMC boundary, allowing us to check if the hole diameter exceeds the maximum allowable value.

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Answer:

9.90

Explanation:

Given [H+] = 1.25 x 10^-10 M, we can calculate the pH using the formula:

pH = -log10([H+])

pH = -log10(1.25 x 10^-10)

Using logarithmic properties:

pH = -log10(1.25) - log10(10^-10)

Since log10(10^-10) is equal to -10:

pH = -log10(1.25) - (-10)

pH = -log10(1.25) + 10

Now, evaluating the logarithm using a calculator:

pH = -0.0969 + 10

pH = 9.9031

Therefore, the pH of the solution with [H+] = 1.25 x 10^-10 M is approximately 9.9031. Rounding it to two decimal places, the pH is approximately 9.90.

Answer:

Length

- centimetre

- millimetre

- kilometre

- meter

Mass

- gram

- kilogram

Capacity

- liter

- millilitre

I don't know why mass is there but hope this helps! :)

A stellar spectrum can reveal many properties of stars, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.

Answer:

C₂H6

Explanation:

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A

A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:

A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.

B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.

D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.

In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A

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The individual mass of C, H and O in given sample are 0.5196 g, 0.0374 g and 0.1979 g respectively.

Moles of CO2 formed can be calculated as

= Mass of CO2 / Molar mass of CO2

= 1.9061 / 44 = 0.0433 moles

Now, moles of C which is present in one mole of CO2 = 1 mole

Moles of C in 0.0433 moles of CO2 = 0.0433 moles

As we know that, molar mass of C = 12 g / mol

Mass of C in 0.7549 g of given sample can be calculated as

= 0.0433 × 12 =0.5196 g

Mass of H2O formed = 0.3370 g

Similarly, Molar Mass of H2O = 18 g / mol

Moles of H2O = 0.3370 / 18 = 0.0187 moles

Moles of H present in 1 mole of H2O = 2 moles

Moles of H present in 0.0187 mole of H2O = 2 × 0.0187 = 0.0374 moles

Molar mass of H = 1 g / mol

Mass of H contained in 0.7549 g of sample = 1 × 0.0374= 0.0374 g

Mass of O in 0.7549 g sample can be calculated as

= 0.7549 – [(Mass of C ) + (Mass of H) ]

= 0.7549 – [ (0.5196) + (0.0374) ]

= 0.1979 g

Thus, we calculated that the individual mass of C, H and O in given sample are 0.5196 g, 0.0374 g and 0.1979 g respectively.

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DISCLAIMER: THE above question is incomplete. Complete question is given below:

A 0.7549g sample of the compound burns in o2(g) to produce 1.9061g of co2(g) and 0.3370g of h2o(g). Calculate the individual mass of C, H and O in the given sample.

Answer:

battery, phone cover, model of phone, plastic cover phone by rain oil or some harmful effects , need wire Stricker to make phone good so the people buy it and some inner parts

Explanation:

Hope this helps:)

The possible fuels that can be used are, LPG (Liquefied petroleum gas), CNG (Compressed Natural Gas), Biogas, and fossil fuels.

An ideal fuel has the following characteristics:

Thus, LPG (Liquefied petroleum gas), CNG (Compressed Natural Gas), Biogas, and fossil fuels are ideal fuels and can be used in the eco-friendly reactor.

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c h20 gives h+ and oh-

h20 gives h+ and oh-

1 atm (275 mL) equals 3.10 atm V2, where V2 is equal to 275 mL divided by 3.10, and P1V1 equals P2V2. The calculation is 1(275) = 3.1 (88.71) = 275.

The ideal gas equation can be changed to demonstrate that the pressure of a sample of gas is directly proportional to the amount of gas present, volume, and temperature is held constant: P=n(RTV)=n×const

Volume and temperature are related as follows: V1 / T1 = V2 / T2, where V1 and T1 represent the beginning volume and absolute temperature, and V2 and T2 represent the final volume and absolute temperature (the Kelvin temperature, not the Celsius temperature).

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Answer:

two north poles and two south poles

Explanation:

A single magnet has a north pole and a south pole. If it is broken into two pieces, then each of the two pieces will have a north pole and a south pole.

No matter how many times or into how many pieces a magnet is broken, the resulting pieces will have two poles each.

Answer:

Each piece will still have a north pole and a south pole.

Explanation: