is carbon oxygen double bond more polar than carbon carbon double bond

Answer:

a

Explanation:

Answer:

Sodium

Formula : Na

Equivalent mass:23.0

Mark me as Branliest

Answer: Diisobutylaluminum hydride (DIBALH) is a reducing agent that can reduce esters to aldehydes or 2' alcohols to ketones. Therefore, the correct answer is (A) ester to aldehyde and (C) 2' alcohol to ketone.

DIBALH is not capable of converting carboxylic acid to ester or ester to a carboxylic acid, nor can it oxidize an aldehyde to a carboxylic acid.

Explanation: Diisobutylaluminum hydride (DIBALH) is a reducing agent that can reduce esters to aldehydes or 2' alcohols to ketones. Therefore, the correct answer is (A) ester to aldehyde and (C) 2' alcohol to ketone.

DIBALH is not capable of converting carboxylic acid to ester or ester to a carboxylic acid, nor can it oxidize an aldehyde to a carboxylic acid.

Answer:

protons(positively charged) and the neutrons (no charge)

Explanation:

Answer:

The nucleus of an atom contains protons and neutrons.

: PM2.5 is defined as the mass concentration of particles in the air less than or equal to 2.5 micrometers in diameter.Question 15: False, carbon dioxide (CO2) is not considered a criteria air pollutant.

Question 16: The closest answer is 50%, but the exact percentage is not provided in the question.Question 17: The term "photochemical smog" is most synonymous with ozone (O3), which is a criteria air pollutant.Question 18: True, attainment of ambient air quality standards requires that measured concentrations at all monitoring stations within an air district are below ambient air standards.

Question 14 asks about the definition of PM2.5. PM2.5 refers to particulate matter with a diameter less than or equal to 2.5 micrometers. It represents the mass concentration of particles suspended in the air, which are small enough to be inhaled into the respiratory system and can have adverse health effects.

Question 15 states whether carbon dioxide (CO2) is a criteria air pollutant. Criteria air pollutants are a set of pollutants regulated by environmental agencies due to their detrimental impact on air quality and human health. However, carbon dioxide is not considered a criteria air pollutant because it does not directly cause harm to human health or the environment in the same way as pollutants like ozone or particulate matter.

Question 16 asks about the percentage of carbon monoxide (CO) emissions from mobile sources in Santa Clara County. While the exact percentage is not provided in the question, the closest answer option is 50%. However, it is important to note that the precise percentage may vary depending on specific local conditions and emissions sources.

Question 17 inquires about the criteria air pollutant most synonymous with the term "photochemical smog." Photochemical smog is primarily associated with high levels of ground-level ozone (O3). Ozone is formed when nitrogen oxides (NOx) and volatile organic compounds (VOCs) react in the presence of sunlight, creating a hazy and polluted atmospheric condition.

Question 18 addresses the concept of "attainment" of ambient air quality standards. To achieve attainment, measured concentrations of pollutants at all monitoring stations within an air district must be below the established ambient air quality standards. This ensures that the air quality in the given area meets the required standards for protecting human health and the environment.

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According to the information provided in the image the emergence of photosynthetic organisms contribute to the weathering of rock was

option B was the correct answer

what does weathering of rock refers to ?

Rock Weathering: Weathering is the transformation of rocks into more stable materials as a result of exposure to agents such as air, water, and organic fluids. No rock is impervious to weathering.

                                                         or

Weathering is the process through which rocks disintegrate and decompose in situ. It signifies that weathering is a static process. Weathering, as defined by C.D. Oilier (1969), is "the breakdown and modification of minerals near the earth's surface to produce products that are more in balance with freshly imposed physico-chemical circumstances."

The rock was formed when oxygen reacted with other elements to form earths crust which weathered the rock.

that is the oxygen that is produced from the photosynthetic process was reacted to the hydrogen that is present in the gases formed the water and that lead to the weathering of the rock.

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Answer:

OX-Y-Z

Explanation:

its the correct answer

The correct order from the most amount of motion( Kinetic energy) to the least amount of motion is Y (gas), Z (liquid), and X (ice). The correct answer is C, Y-Z-X.

In the given sequence, the states of matter with the most amount of motion (kinetic energy) to the least amount of motion are as follows:

Y - Gas (highest kinetic energy, molecules move freely and quickly in all directions)

Z - Liquid (intermediate kinetic energy, molecules have some freedom of movement but are more closely packed than in a gas)

X - Ice (lowest kinetic energy, molecules are tightly packed and have minimal movement, as it is in a solid state)

This sequence reflects the increasing freedom of movement and mobility of molecules as they transition from a solid to a liquid to a gas state.

Thus, the correct option is C.

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True or false: A rock can be composed almost entirely of one mineral.

True. All minerals do not have cleavage.

True or false: Color is a reliable technique for identifying minerals.

False.

What is an ion?

An ion is an atom that has more or fewer electrons than it "should." An atom may gain or lose electrons to become an ion, resulting in a negative or positive charge. A mineral's intensity of reflected light is referred to as luster.

The resistance to scratching is known as hardness. Cleavage is the tendency of minerals to break along planes of weakness. Tenacity refers to the minerals' resistance to deformation, bending, or breaking. The mineral class that accounts for more than 90% of the Earth's crust is silicates.

True or false: A rock can be composed almost entirely of one mineral.

True. All minerals do not have cleavage.

True or false: Color is a reliable technique for identifying minerals.

False.

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An ion is an atom or molecule that has lost or gained electrons, resulting in a net electric charge. The mineral class accounting for more than 90% of Earth's crust are silicates. Not all minerals have cleavage and color isn't reliable for identifying minerals.

An ion is an atom or molecule with a net electric charge due to the loss or gain of one or more electrons. The process producing ions is called ionization.

'Luster' refers to a mineral's intensity of reflected light but 'Hardness' is defined as a mineral's resistance to scratching. The mineral class that accounts for more than 90% of the Earth's crust are the silicates.

It is true that a rock can be composed of almost entirely one mineral. However, it is not true that all minerals have cleavage and color is not a reliable technique for the identification of minerals.

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You are an archaeologist who has just found an ancient fire ring containing charcoal fragments. You send these fragments to the lab for carbon-14 analysis. The report comes back that these fragments have 1/4 the amount of carbon-14, compared to modern wood. You use 5730 years as the half-life of carbon-14. You conclude the charcoal is about 11,460 years old

This estimate is derived from the observation that the fragments contain 1/4 the amount of carbon-14 compared to modern wood, suggesting that three half-lives, each equivalent to 5730 years, have passed since the charcoal was once alive.

Adjusting for the reduction factor of 1/4, the calculated age of the charcoal fragments is determined to be around 11,460 years.

To determine the approximate age of the charcoal fragments, we use the concept of carbon-14 decay and its known half-life. Carbon-14 is an isotope that undergoes radioactive decay over time, with a half-life of 5730 years.

Since the report states that the charcoal fragments have 1/4 the amount of carbon-14 compared to modern wood, it means that three half-lives have passed since the time the charcoal was once living. At each half-life, the amount of carbon-14 reduces by half.

Therefore, if we divide the time elapsed into three equal intervals (each representing a half-life), we can determine the age. Each interval is equivalent to 5730 years. So, three half-lives would be 5730 years + 5730 years + 5730 years = 17190 years.

However, we are interested in the age of the charcoal fragments, so we divide 17190 years by the reduction factor of 1/4 (due to having 1/4 the carbon-14 amount) to obtain 11460 years as an approximate age for the charcoal.

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Answer:

los metales alcalinotérreos: berilio (Be), magnesio (Mg), calcio (Ca), estroncio (Sr), bario (Ba) y radio (Ra).

o simplemente llamado grupo 2A

Explanation:

Taking into account the definition of molarity, the molarity of a solution that contains 0.75 moles of solute in 0.250 L of solution is 3 moles/L.

Molarity is a measure of the concentration of a solution expressed in the number of moles dissolved per liter of solution.

In other words, molarity indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

molarity= number of moles of solute÷ volume of solution

Molarity is expressed in units moles/L.

In this case, you have:

Replacing in the definition of molarity:

molarity= 0.75 moles÷ 0.250 L

Solving:

molarity= 3 moles/L

Finally, the molarity is 3 moles/L.

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Soaps clean up dirt by acting as emulsifying agents. The nonpolar chain in the soap is attracted to the dirt and the ionic end is attracted to the water. Thus, the soap creates b)dispersed droplets that wash the dirt away with the water.

In the field of chemistry, soap can be described as a washing material that is made by adding a base to a fat or oil.

As it contains fats and oils, soaps work by acting as an emulsifying agent.

The non-polar fats and oil absorb any kind of dirt and kill microorganisms.

When water is added to soap, the mixture acts as a dispersed droplet to absorb dirt particles in it. In this way, any kind of dust, microorganisms and dirt are removed.

The correct question format is:

Soaps clean up dirt by acting as emulsifying agents. The nonpolar chain in the soap is attracted to the dirt and the ionic end is attracted to the water. Thus, the soap creates ............. that wash the dirt away with the water.

a) floating bubbles

b) dispersed droplets

c)solid precipitate

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Answer:

balanced;

unbalanced;

unbalanced;

balanced;

Explanation:

CaO + 3C → CaC2 + CO  //all elements are balanced

Na + H2O → 2NaOH + H2  //Na is not balanced on the left

4Fe + O2 → 2Fe2O3  //O is not balanced on the left

2Mg + O2 → 2MgO //left is equal to right, balanced

Answer:

This answer I think it is Al,F

Answer:

Give a brief question

Not an awful question

The molal boiling point of a solution of ethylene glycol and water is 100.052 °C.

number of mol of ethylene glycol = (given mass)/(molar mass)

= 124.14/62.07

= 2.000 mole

mass of water = 2000 g

= 2.000 kg

molality = (number of mol of ethylene glycol)/(mass of water in Kg)

= 2.000/2.000

= 1.000 m

ΔTb = Kb*m

Tb - 100 = 0.052*1.000

Tb - 100 = 0.052

Tb = 100.052  °C

Molal boiling-point elevation is a term used in thermodynamics and refers to the change in boiling point of a solvent due to the addition of a non-volatile solute. The molal boiling-point elevation is proportional to the molality (number of moles of solute per kilogram of solvent) of the solution and is an important colligative property, which means it depends only on the concentration of solute particles and not on their identity.

The molal boiling-point elevation can be calculated using the equation ΔTb = Kb × m, where ΔTb is the change in boiling point, Kb is the molal boiling-point elevation constant, and m is the molality of the solution. The value of Kb is different for each solvent and is used to quantify the effect of the solute on the boiling point of the solvent.

Molal boiling-point elevation has several important applications, including the purification of liquids by fractional distillation, the determination of the concentration of dissolved substances, and the production of high-purity solvents. It is also used in the food and pharmaceutical industries, where the boiling point of solutions is often used as a quality control criterion.

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4x + 13

4 * -3 + 13

-12 + 13

1

There are 210 kilocalories in a portion of food that contains 8 g protein, 10 g fat, and 22 g carbohydrate. The amount of vitamin C and water in the food does not contribute to the number of kilocalories, as they are not sources of energy.

Proteins are large, complex molecules that are made up of long chains of amino acids. They are essential for the growth, repair, and maintenance of tissues in the body, and are involved in a wide range of biological processes.

To calculate the number of kilocalories in a portion of food, we need to use the following formula:

Calories = (grams of protein x 4) + (grams of fat x 9) + (grams of carbohydrate x 4)

Using this formula, we can calculate the number of calories in the given portion of food:

Calories = (8 g protein x 4) + (10 g fat x 9) + (22 g carbohydrate x 4)

Calories = 32 + 90 + 88

Calories = 210 kcal

Therefore, in a portion of food that contains 8 g protein, 10 g fat, and 22 g carbohydrate there are 210 kilocalories.

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If 0.135 moles are added to the balloon, its new volume would be 2.997 L.

The optimal petrol law can be used to resolve this issue:

PV = nRT

where R is the gas constant, n is the number of moles, P is the pressure, V is the volume, and T is the temperature.

We may link the original and final volumes using the equation below, assuming constants for pressure and temperature:

(V1 / n1) = (V2 / n2)

If V1 is the starting volume, n1 is the starting mole count, V2 is the ending volume, and n2 is the ending mole count.

We may first determine the initial molar volume of the gas using the provided values:

V1/n1=7.28 L/0.38 mol = 22.195 L/mol

The final volume can then be determined using the molar volume:

0.135 mol x 22.195 L/mol = 2.997 L is what V2 = n2 x (V1 / n1) equals.

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Answer:

color of water remains same

At present, the greenhouse effect of carbon dioxide is not greater than that of water vapor. Thus, the given statement is false.

The amount of effect that water vapor has on the greenhouse effect is about 40-50 percent while with carbon dioxide, it accounts to 25 percent. The significant difference between them shows the different impacts on the greenhouse effect.

Both of them cause the same effects of heat, however, water vapor being a greenhouse gas is inevitable and natural.  It is much needed for life to sustain on earth, however, the numbers have increased causing an alarming rate of change that may not be good.

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Answer: true

Explanation:

Cuz I’m smart

Answer:

False

Explanation:

I just took the test.

Metallic elements exist in a solid-state and they are opaque, have a shiny surface, good conductors of electricity and heat, malleable and ductile, and are dense. The structure of metals is formed by atoms that are held together by metallic bonds. These atoms have loosely bound valence electrons that can be shared between the neighboring atoms.

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Out of the given reactions, the correct identification of the coordinate complex is BH3 in (CH3)2S + BH3 → H3BS(CH3)2. In this reaction, BH3 acts as a Lewis acid and coordinates with the lone pair of electrons present on the S atom in (CH3)2S to form a coordinate complex.

The BH3 molecule is a Lewis acid as it has an incomplete octet and can accept a pair of electrons from a Lewis base. In the other two reactions, there are no coordination complexes formed.
BeCl2 is not involved in the formation of a coordination complex in the given reactions. It is a molecule that exists as a linear shape due to its sp hybridization. The two Cl atoms are directly bonded to the central Be atom through a single bond. BeCl2 is not a Lewis acid as it does not have an incomplete octet and cannot accept a pair of electrons from a Lewis base to form a coordination complex.
In conclusion, the correct identification of the coordinate complex is BH3 in (CH3)2S + BH3 → H3BS(CH3)2, and BeCl2 is not involved in the formation of a coordination complex in the given reactions.

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Answer:

BeCl2−4 in BeCl2 + 2Cl → BeCl2−4

Explanation:

In a Lewis acid-base reaction, the coordinate complex is the compound that is generated by the formation of coordinate covalent bond(s) between the Lewis acid and the Lewis base.

Answer:

21 March

Explanation:

hope its helpful

The impact of e-commerce on commercial real estate is significant. E-commerce sales have grown steadily, accounting for a considerable portion of overall sales.

The growth of e-commerce has fueled the demand for distribution spaces, specifically distribution centers and warehouses, which play a crucial role in the supply chain and logistics of packaging and shipping goods to customers. These spaces are sought after by e-commerce giants, who prefer locations near large cities while still providing ample room for large buildings. Suburban areas, such as Katy, Brookshire, and Waller near Houston, are experiencing significant growth in the establishment of distribution centers.

On the other hand, the rise of online shopping has posed challenges for brick-and-mortar retailers. Many physical retail spaces have struggled to remain open or have had to downsize. As a result, there is a trend towards smaller retail spaces, which require less inventory in-store. This trend encourages a combination of online and in-store shopping, known as hybrid shopping. The Covid-19 pandemic further accelerated this trend as consumers sought the convenience and safety of online shopping with options like curbside or in-store pick-up. Even as restrictions ease, this approach is expected to remain popular.

To adapt to the changing retail landscape, integrating technology into physical retail spaces has become crucial. Technology tools, such as mobile apps, can enhance the shopping experience, offer special promotions, and provide valuable data on customer behavior. Retailers, especially large lifestyle shopping centers, have been proactive in blending technology with consumer experiences to stay relevant and attract customers.

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Answer:

Light energy is a form of electromagnetic radiation. Light consists of photons, which are produced when an object's atoms heat up.

Explanation:

Answer:

Light energy is a kind of kinetic energy with the ability to make types of light visible to human eyes. Light is defined as a form of electromagnetic radiation emitted by hot objects like lasers, bulbs, and the sun. Light contains photons which are minute packets of energy.

Explanation:

hope it's helpful for you.

Answer:

The three main rock types are igneous, metamorphic and sedimentary. The three processes that change one rock to another are crystallization, metamorphism, and erosion and sedimentation. Any rock can transform into any other rock by passing through one or more of these processes. This creates the rock cycle.

Answer:

3.0 L O₂

Explanation:

If CO reacts at STP, it means that there are 1.0 moles of CO. To find the moles of O₂, you need to use the mole-to-mole ratio from the given equation.

1.0 moles CO            1 mole O₂
----------------------  x  ---------------------  =  0.5 moles O₂
                                2 moles CO

To calculate the liters of oxygen, you need to use Avogadro's Law:

V₁ / N₁ = V₂ / N₂

In this equation, "V₁" and "N₁" represent the volume and moles of the first molecule. "V₂" and "N₂" represent the volume and moles of the second molecule. You can plug the given and calculated values into the equation and simplify to isolate V₂.

V₁ = 6.0 L                     V₂ = ? L

N₁ = 1.0 moles              N₂ = 0.5 moles

V₁ / N₁ = V₂ / N₂                                            <----- Avogadro's Law

(6.0 L) / (1.0 moles) = V₂ / (0.5 moles)         <----- Insert values

6.0 = V₂ / (0.5 moles)                                   <----- Simplify left side

3.0 = V₂                                                         <----- Multiply both sides by 0.5

**I am not 100% confident on this answer. Please let me know if it is incorrect**

Answer:

2CO(g) + O2(g) → 2CO2(g)

If 9.0 L of O2 react at STP, how

many moles of CO2 form during the

reaction?

[?] mol CO2

Explanation:

What would it be if it was 9.0?