Does ethanol have a higher or lower surface tension than water.

The statement is inconsistent with Dalton's atomic theory, which emphasizes that atoms combine in simple, whole-number ratios to form compounds.

The statement "an oxygen atom combines with 1.5 hydrogen atoms to form a water molecule" is inconsistent with Dalton's atomic theory because Dalton's atomic theory states that atoms combine in simple, whole-number ratios to form compounds.

According to Dalton's atomic theory, atoms are indivisible and retain their identity during chemical reactions. Atoms of different elements combine in fixed ratios to form compounds, and these ratios are expressed as simple whole numbers. For example, in the case of water (H2O), Dalton's theory would state that one oxygen atom combines with two hydrogen atoms in a 1:2 ratio.

The statement that an oxygen atom combines with 1.5 hydrogen atoms contradicts this fundamental principle of Dalton's atomic theory. Atoms cannot be divided into fractions or combine in non-whole-number ratios according to Dalton's theory.

Therefore, the statement is inconsistent with Dalton's atomic theory, which emphasizes that atoms combine in simple, whole-number ratios to form compounds.

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Answer:

Hydrogen

Explanation:

It is considered a special element due to its flexibility in giving up & taking in electrons, therefore making it good for organic & inorganic chemistry. Hydrogen has only one proton and one electron and is the only element which has no neutrons. it is considered as the simplest element in the universe and gives a valid reason for it to be the most abundant and common element in the universe.

Hoped this helped! If this doesn't fit your 80 word count, you could shorten it.

The pure compound that is dissolved in distilled water because it has an ionic charge.

A chemical compound is made up of many identical molecules that are formed from atoms of more than one element and are joined together by chemical bonds. Not all compounds, however, are created equal. When ionic and covalent compounds dissolve in water, they undergo different reactions.

When a solute dissolves, it's own individual atoms, molecules, as well as ions interact with both the solvent, are becoming solvated, and are free to move throughout the solution. This isn't however, a one-way street. If the molecule or ion comes into contact with the surface of an undissolved solute particle, this could adhere to a particle in a process known as crystallization. Dissolution and crystallization continue as long as there is excess solid present, resulting in a dynamic equilibrium similar to the equilibrium that maintains a liquid's vapor pressure.

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Answer:

AgCN

Explanation:

Ag+C=N

Answer

b. Oil, water, chloroform.

Explanation

Between water, chloroform, and oil, chloroform is the most dense substance (1.5 g/cm3), followed by water which has a density of 1.0 g/cm3. The least dense substance is oil with density of 0.9 g/cm3. Therefore, the oil will be at the top, followed by water, then chloroform will be at the bottom.

The fluids layered from top to bottom are oil, water and chloroform. Therefore, the correct option is option B.

A fluid is defined as a substance that has the ability to flow and conform to its surroundings. They can be found in both liquids and gases, among other forms. Liquids, like water, have a specified volume but no clear shape, whereas gases, like the air, have neither a specific volume nor shape. We need fluids to survive every day. Since water makes up the majority of the fluid in our bodies, they are essential for our survival. Fluids are also essential in many industrial processes, such as manufacturing, energy production, and transportation.

Therefore, the correct option is option B.

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NaCl has a cubic unit cell, best thought of as a face-central cubic array of anions with an interpenetrating FCC action lattice or (vice versa). The cell looks the same whether you start with anions or cations on the corners. Each ion is 6 co-ordinates and has a local octahedral geometry.

NaCl lattice exhibit  cubic unit cell.  The face-centered cubic array of anions with an interpenetrating fcc cation lattice are seen in 3D structure. Each ion is 6-coordinate and has a local octahedral geometry.

Sodium chloride is an ionic compound, formed from the sodium metal and chlorine atom. The ionic bond is formed by loss of one electron from sodium metal to the chlorine atom.

The lattice structure of all metals contains a pool of cations in the sea of mobile electrons.  The electrons can be delocalized into the interstices and thus metals conduct electrically and thermally.

In the fcc lattice of NaCl,  sodium atoms are arranged at the corners and Cl atoms are at the center of each cube face of the cell. They are assumed to touch along face diagonals.

Atoms are arranged at the corners of the cube with another atom at the cube center also hence there will 4 atoms one unit cell.

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Electrons are arranged in different energy levels in an atom. The electrons in an atom are arranged into various energy levels that surround the nucleus.

These levels are also referred to as electron shells or energy levels, and they are numbered from the innermost shell outward.

In addition, electrons in an atom fill up the lower energy levels before moving to higher energy levels. Electrons in the first shell have the least amount of energy, whereas electrons in the outermost shell have the highest amount of energy. The number of energy levels in an atom is determined by the number of electrons that it has.The number of electrons in the first shell of an atom is limited to two electrons, while the second shell can hold up to eight electrons. The third shell can contain up to 18 electrons, while the fourth shell can accommodate up to 32 electrons.

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Explanation:

1. h. (binary means 2 things in the system).

2. f.

3. e.

4. b.

5. c (ternary means 3 things in the system)

6. d.

7. a.

8. g ("poly" means several or many)

C2H2 will be left  when the burning is complete.

The equation of the reaction is; 2C2H2 + 5O2 --> 4CO2 + 2H2O

The number of moles of C2H2 reacting is = 1.20 g/26 g/mol = 0.046 moles

The number of moles of O2 is = 3.50 g/32 g/mol = 0.109 moles

Since;

2 mole of C2H2 reacts with 5 moles of O2

x moles of C2H2 reacts with 0.109 moles of O2

x = 2 mole × 0.109 moles/5 moles

x = 0.044 moles of C2H2.

It then follows that C2H2 is the reactant in excess so C2H2  will be left  when the burning is complete.

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The type of moon that Chelsea was seeing is full moon (option A).

The moon is any natural satellite of a planet. It is defined to be a celestial body that makes an orbit around a planet, including the eight major planets, dwarf planets, and minor planets.

The eight phases of the moon are as follows;

According to this question, Chelsea went camping for one week. Each night she saw the moon and noticed that the moon seemed to be getting larger.

It can be said that Chelsea is seeing the full moon.

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To calculate the value for the molecular weight of your unknown been affected if a small quantity of the unknown stuck to the metal stirring rod and failed to dissolve in the benzophenone following is the process:

Your mass of counted solute added to the detergent would be lower than the recorded value performing in a lower temperature change grounded on mass of solute. A lower temperature change will affect in a lower number of calculated intelligencers of solute present. This will give a advanced molar mass for your unknown compared to the real molar mass( lower number of intelligencers divided into the mass of solute gives a larger molar mass).

These two scenarios are predicated on a solute-solvent mixture's lower freezing-point (or melting-point) as compared to pure solvent. A nonelectrolyte solute's equation is:

ΔTf = Kfm

Kf is the solvent's specific molal freezing-point depression constant, and m is the molality of the solution mixture.

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Answer:

indian ocean

Explanation:

Answer:

A. ✔️Substitution

B. ✔️Insertion

C. ✔️Deletion

Explanation:

In A, the type of mutation that is shown is Substitution. In B, the type of mutation shown is Insertion and in C, the type of mutation shown is Deletion.

Mutation refers to the change in the DNA sequence. This occurs in an organism. In gene mutation, the structure of DNA molecule changes and produces a different allele of a gene. While in chromosome mutation, there is the change in the structure or number of the whole chromosomes in a particular cell.

Actually, mutations can take place both in prokaryotic cell and in eukaryotic cell.

In genetics, there are: Substitution, Insertion and Deletion mutations.

Substitution mutation is an exchange of one base for another. Insertion mutation is simply addition of one or more nucleotide pairs in a DNA sequence while Deletion mutation refers to the situation in which a sequence of DNA is left out when there is DNA replication.

Answer:

A. Substitution

B. Insertion

C. Deletion

Explanation:

A. There is a replacement in C G there is A T.

B. There is one more base.

C. There are 8 base there should be 9.

The location of a planet within the solar system influences its orbital characteristics, motion, and temperature, shaping its unique environmental conditions and behaviors.

Shape of orbit: The location of a planet determines the shape of its orbit around the Sun. Planets closer to the Sun, such as Mercury and Venus, have elliptical orbits with smaller eccentricities.

In contrast, planets farther from the Sun, like Mars and Jupiter, have more circular orbits. The shape of the orbit influences the planet's distance from the Sun at different points during its revolution, impacting factors such as temperature and intensity of sunlight.

Motion: The location of a planet affects its motion within the solar system. Planets closer to the Sun have higher orbital speeds, as they experience stronger gravitational forces.

They complete their orbits more quickly compared to planets farther away. Additionally, the location within the solar system determines the direction of a planet's motion—whether it orbits in the same direction as the Sun's rotation (prograde motion) or in the opposite direction (retrograde motion).

Temperature: The location of a planet in the solar system plays a significant role in determining its temperature. Proximity to the Sun affects the amount of solar radiation received by a planet.

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(i) The vehicle outputs approximately 11.58 kg of CO₂ per week. (ii) The Biofuel Obligation Scheme in Ireland is implemented by requiring fuel suppliers.

To calculate the amount of CO₂ output per week, we need to determine the amount of fuel used and then use the given combustion equation to find the ratio of CO₂ produced per unit of fuel.

Given;

Average fuel efficiency: 7.5 km per litre

Distance traveled per week: 300 km

Mass of fuel per litre: 0.75 kg

First, we calculate the total fuel used per week;

Fuel used = Distance traveled / Fuel efficiency

= 300 km / 7.5 km per litre

= 40 litres

Next, we find the mass of fuel used per week:

Mass of fuel used = Fuel used × Mass of fuel per litre

= 40 litres × 0.75 kg per litre

= 30 kg

Using the combustion equation, we know that 2 moles of C₈H₁₈ produce 16 moles of CO₂. Therefore, we can calculate the moles of CO₂ produced from the given mass of fuel;

Moles of CO₂ produced = Moles of C8H18 × (16 moles of CO₂ / 2 moles of C₈H₁₈)

= (30 kg / (114 g/mole)) × (16 moles of CO₂ / 2 moles of C₈H₁₈)

= (30,000 g / 114 g/mole) × (16 moles of CO₂ / 2 moles of C₈H₁₈)

= 263.16 moles of CO₂

Finally, we convert the moles of CO₂ to kilograms;

Mass of CO₂ produced = Moles of CO₂ produced × Molar mass of CO₂

= 263.16 moles × (44 g/mole)

= 11,579.04 g

= 11.58 kg (rounded to two decimal places)

Therefore, the vehicle outputs approximately 11.58 kg of CO₂ per week.

The Biofuel Obligation Scheme in Ireland is implemented by requiring fuel suppliers to include a certain percentage of biofuels in their overall fuel sales, thereby reducing the carbon footprint by promoting the use of renewable and lower-carbon-emitting fuels.

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The structure can be represented as follows: Cl-CH2-CH2-Cl. The compound C2H4Cl2 with a single peak in its proton NMR spectrum at 3.7 ppm is known as 1,2-dichloroethane.

This compound has a linear structure with the two carbon atoms (C) connected by a single bond, and each carbon atom is attached to a hydrogen atom (H) and a chlorine atom (Cl).
The single peak at 3.7 ppm in the proton NMR spectrum suggests that the hydrogen atoms are chemically equivalent and experience the same magnetic environment. This is consistent with the symmetrical structure of 1,2-dichloroethane.

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Answer:

The answer is below

Explanation:

Ketone is a class of organic compounds which has a carbonyl group such that the carbon atom is covalently bonded to an oxygen atom, while the remaining two bonds are to other carbon atoms or hydrocarbon radicals.

Ketones are highly reactive hydrocarbons, they can be gotten from the oxidization of secondary alcohols. Ketone are used for medicinal applications.

The third option is the ketone

it’s the the last 2 choices

Answer:

fewer collisions occur between particles or lowering the temperature

Explanation:

Answer:

4.9 atm

Explanation:

Given:

Total pressure = 7.0 atm

(Total number of moles)=[ (1.5 mol arg) + (3.5 mol co2) ]

= 5 moles

Let Partial pressure of CO2 gas = P(CO2)

✓✓partial pressure of CO2 can be calculated using below expresion.

P(CO2) / Total pressure = (moles of CO2 gas) / Total number of moles

✓✓ Let us substitute the values into the above expresion.

[P(CO2) / 7.0 atm ] = [3.5 mol / 5 moles]

P(CO2)= [7 atm × 3.5 moles] / [5 moles]

= 4.9 atm

Hence, the partial pressure of CO2 is 4.9 atm

Answer:

Partial pressure of CO₂ = 4.9 atm

Explanation:

From the question given above, the following data were obtained:

Mole of Ar = 1.5 moles

Mole of CO₂ = 3.5 moles

Total pressure (Pₜ) = 7.0 atm

Partial pressure of CO₂ =?

Next, we shall determine the mole fraction of CO2. This can be obtained as follow:

Mole of Ar = 1.5 moles

Mole of CO₂ = 3.5 moles

Total mole = 1.5 + 3.5

Total mole = 5 mole

Mole fraction of CO₂ = mole of CO₂ / total mole

Mole fraction of CO₂ = 3.5 / 5

Mole fraction of CO₂ = 0.7

Finally, we shall determine the partial pressure of CO₂. This can be obtained as follow:

Total pressure (Pₜ) = 7.0 atm

Mole fraction of CO₂ = 0.7

Partial pressure of CO₂ =?

Partial pressure of CO₂ = mole fraction of CO₂ × total pressure

Partial pressure of CO₂ = 0.7 × 7

Partial pressure of CO₂ = 4.9 atm

Titration

citric acid: CH₃COOH, c = 1

caustic soda: NaOH  c = 1

V₁M₁c₁=V₂M₂c₂ (c = valence)

\(\tt 32.27\times 0.0148\times 1=25\times M_2\times 1\\\\M_2=0.019\:M\)

The citric acid concentration in a soda if it requires 32.27 ml of 0. 0148 m NaOH to titrate 25.00 ml of soda is 0.0064 M.

Titration is defined as the process of chemical analysis in which the quality of some constituent  of a sample is determined by adding to the measured sample an exactly known quantity of another substance with which the desired constituent  reacts in definite known proportion.

The chemical reaction of citric acid with NaOH is
H₃C₆H₅O₇ + 3NaOH -> Na₃C₆H₅O₇ + 3H₂O

According to law of equivalence

M1V1 / n1 = M2V2 / n2

M1 = M2V2 x n1 / n2 x V1

M1 = 0.0148 x 32.27 X 1 / 3 x 25

M1 = 0.0064 M

Thus, the citric acid concentration in a soda if it requires 32.27 ml of 0. 0148 m NaOH to titrate 25.00 ml of soda is 0.0064 M.

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Answer:

Under the earth's surface, rocks melt, metamorphize, and crystalize.

Explanation:

Metamorphic and Igneous rocks are basically dependant on the heat/pressure of the environment under the surface :) Melting, metamorphosing and crystallization all occur under earth's surface.

The specific processes in the rock cycle that occur beneath the Earth surface are :

Under the Earth surface the specific rock cycle processes that leads to the formation of the different types of rocks includes;  Melting, metamorphization and rock crystallization.

Metamorphic rocks are formed from other rocks ( sedimentary and igneous rocks)  due to the change in temperature and this process is metamorphization. while igneous rocks are formed from molten rocks caused by the melting process. Sedimentary rocks are formed by the deposition of sediments from weathering of existing rocks this is the  crystallization process.

Hence the specific process in the rock cycle that occur beneath the Earth's surface are : Melting, metamorphosing and crystallization.

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Answer:

multiply (make new cells)

After drawing the lewis structure, the correct answer for the associated molecular geometry of SiF4 is:

e. tetrahedral

To draw the Lewis structure of silicon tetrafluoride (SiF4), we first need to determine the total number of valence electrons.

Silicon (Si) is in Group 14 of the periodic table, so it has 4 valence electrons. Fluorine (F) is in Group 17 and has 7 valence electrons. Since there are four fluorine atoms, the total number of valence electrons is 4 (from Si) + 4 (from F) = 8.

To form the Lewis structure, we place the silicon atom in the center and surround it with four fluorine atoms, each bonded to the silicon atom.

The structure is as follows:

          F

          |

   F – Si – F

          |

         F

Each fluorine atom is single-bonded to the silicon atom, and all bonds are represented by lines (-). Silicon shares one electron with each fluorine atom, fulfilling the octet rule for each atom.

Now, to determine the associated molecular geometry, we can use the VSEPR (Valence Shell Electron Pair Repulsion) theory. According to VSEPR, the arrangement of the four electron pairs around the silicon atom will be tetrahedral.

Therefore, the correct answer for the associated molecular geometry of SiF4 is:

e. tetrahedral

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the concentration of ClCH2CH2Cl in the vessel 5.80 seconds later would be 1.49 M.

The second-order rate law for the given reaction is:

rate = k[ClCH2CH2Cl]

where k is the rate constant.

We can use the integrated rate law for a second-order reaction to solve for the concentration of ClCH2CH2Cl at a later time:

1/[ClCH2CH2Cl]t = 1/[ClCH2CH2Cl]0 + kt

where [ClCH2CH2Cl]t is the concentration of ClCH2CH2Cl at time t, [ClCH2CH2Cl]0 is the initial concentration, and k is the rate constant.

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

1/[ClCH2CH2Cl]t = 1/1.22 + (0.743 M-1 s-1)(5.80 s)

1/[ClCH2CH2Cl]t = 0.8205

[ClCH2CH2Cl]t = 1.220 M / 0.8205

[ClCH2CH2Cl]t = 1.487 M

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Answer:

202,020 pennies

Explanation:

The amount of pennies in 1 dollar is 100.

Basically, you just multiply the whole dollar amount (2020) by 100 and then add 20 to find the amount of pennies.

(2020)(100)+20= 202,000+20= 202,020 pennies.

Answer:

202,040 pennies

Explanation:

$1 is equal to 100 so just multiply 100 by 2,020 and then you can add the extra 20 cents