If Thomson’s atomic theory was accurate, what would the results of Rutherford’s gold foil experiment have been?

Fuel shortages in the 1980s started the interest in fuel efficiency  best describes a society’s desire for fuel-efficient vehicles because of Iran- Iraq war.

The Iran-Iraq War in 1980 is the main cause of shortage of oil production. Iraq's and Iran's oil production dropped significantly which triggering economic recessions worldwide.

So that's why society’s desire for fuel-efficient vehicles in order to reduce consumption as well as reduce pollution.

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Adding deionized water to the Erlenmeyer flask will dilute the concentration of HCl in the solution. When deionized water is added to the flask, it increases the volume of the solution without changing the amount of HCl present. As a result, the concentration of HCl will decrease.

The concentration of a solution is defined as the amount of solute (in this case, HCl) dissolved in a given volume of solvent (in this case, deionized water). By adding more deionized water, the total volume of the solution increases, but the amount of HCl remains the same. Therefore, the concentration of HCl will decrease.

The effect of dilution on the concentration of a solution is described by the equation C1V1 = C2V2, where C1 and V1 represent the initial concentration and volume, and C2 and V2 represent the final concentration and volume. In this case, the initial concentration of HCl will be higher before adding deionized water, and the final concentration will be lower after adding deionized water.

In conclusion, adding deionized water to the Erlenmeyer flask will decrease the concentration of HCl, resulting in a skewed experimental [HCl].

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Answer:

Hi

Explanation:

Hi

Answer:

Ba(ClO3)2

Explanation:

Ba(ClO\(_3\))\(_2\) is the correct chemical formula for barium chlorate. These can only include one typographic line containing symbols.

A chemical formula is a way to describe the chemical ratios of the atoms that make up a specific chemical compound or molecule in chemistry. Chemical element numbers, symbols, and on occasion other symbols, including parentheses, dashes, brackets, commas, and plus (+) and minus () signs, are used to represent the chemical elements. Which may also include subscripts or superscripts. Since a chemical formula inherently wordless, it cannot be considered a chemical name. A chemical formula does not equal a complete chemical structural formula, despite the fact that it may suggest certain basic chemical structures. Ba(ClO\(_3\))\(_2\) is the correct chemical formula for barium chlorate.

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Answer:

it disappeared loll jk

it obviously dried

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Answer:

maybe they will be the same temperature

Explanation:

Answer: The effect of this transfer of energy usually, but not always, is an increase in the temperature of the colder body and a decrease in the temperature of the hotter body.

Explanation:

Considering the two acids and bases involved, the reverse reaction is favored.

The term reversible reaction refers to a reaction that can go either forward or backwards depending on the conditions of the reaction.

We must recall that acetic acid is a weak acid hence the equilibrium position would always lie towards the left hand side of the equation. Hence considering the two acids and bases involved, the reverse reaction is favored.

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The given statement " because the molecular weight of hydrogen chloride is heavier than that of water, the boiling point of hydrogen chloride is higher than that of water" is true because  the boiling point of a substance is directly related to its molecular weight.

The higher the molecular weight of a substance, the higher its boiling point. In the case of hydrogen chloride and water, hydrogen chloride has a higher molecular weight than water, which means it requires more energy to break the intermolecular bonds holding the molecules together and reach the boiling point. Therefore, the boiling point of hydrogen chloride is higher than that of water.

This is also supported by the fact that hydrogen chloride is a gas at room temperature and pressure, while water is a liquid. The higher boiling point of hydrogen chloride also makes it more volatile and potentially dangerous if not handled properly, as it can release toxic fumes when heated.

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London’s "killer fog" or The Great Smog of London was the extreme event of air pollution in London. Millions of coal fires and stagnant air were the prime reason for the event.

The Great Smog of London was one of the worst events of the air pollution that engulfed the city of England. The industrial air pollutants of the burning coal and high-pressure weather circumstances made the city covered in smog.

This event caused many deaths due to pneumonia and bronchitis in people.  The burning of the coal in the industrial plants of the city was the major reason for the smog.

Therefore, option B. millions of coal fires and stagnant air were the main reason for the great smog of London.

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The number of dots that should be placed around argon in a dot diagram is : ( D )  8

Argon is a noble gas ( inert gas ) just like helium and neon and they have their outer most shell completely filled with its electrons ( 8 valence electrons ), which makes them non-reactive with any other element or compound.

Every valence electron in the Lewis structure of an atom is represented with a dot therefore the 8 valence electrons in Argon will be represented with 8 dots.

Hence we can conclude that the number of dots that should be placed around Argon in a dot diagram is 8.

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There should be 8 dots placed around argon in a dot diagram. The correct answer is option D.

A dot diagram is a way of representing the valence electrons of an atom using dots around the atomic symbol. Each dot represents one valence electron.

Argon is an element in the noble gas family with atomic number 18.The electron configuration of argon is\(\rm 1s^2\ 2s^2\ 2p^6\ 3s^2\ 3p^6\), which means that it has 8 valence electrons.

In a dot diagram, argon should have 8 dots around it, representing the 8 electrons in its outermost shell.

Therefore, the correct answer is D) 8. Argon has a full valence shell of electrons, so in a dot diagram, it should have 8 dots around the atomic symbol to represent its 8 valence electrons.

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The isotope symbol that fits each description is as follows: 68 neutrons, 47 electrons is Ag b. mass number = 197, 79 electrons is Au c. atomic number = 86, 136 neutrons is Rn d. atomic number = 76, mass number = 192 is Os.

Isotopes are two or more atom types that share the same atomic number (number of protons in their nuclei), location in the periodic table, and chemical element but have distinct nucleon numbers (mass numbers) as a result of having a different number of neutrons in their nuclei. Although the chemical properties of each isotope of a given element are nearly identical, they differ in their atomic weights and physical characteristics.

The name "isotope" refers to the fact that different isotopes of the same element occupy the same location on the periodic table. The word "isotope" is derived from Greek origins that mean "the same place".

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Answer: gamma-ray telescopes

Explanation:

this is the answer because the question is asking what telescope must be

placed to observe SHORT-WAVELENGTH radiation. Gamma-rays have very short wave-lengths so therefore it would be gamma-ray telescopes. visible, infrared, and radio all have long wave-lengths, so we can instantly eliminate them.

The Earth's atmosphere is known to be able to blocks all X-rays from space.  telescopes must be places in orbit around Earth in order to observe short-wavelength radiation is gamma-ray telescope.

X-rays is known to have high energy that are in reflecting telescope. Gamma rays from space is commonly blocked by the Earth's atmosphere as the radiation is lethal.

This rays are able too be detected by the optical flashes that they emit when interacting with the material in a particular defined instrument.

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The expected product is (R)-2-bromobutane.

Stereochemistry plays a crucial role in determining the outcome of chemical reactions. In the given question, the stereochemistry of the intermediate I needs to be considered to determine the expected product.

The intermediate I indicates a chiral carbon center, denoted by an asterisk (*), which means it has four different substituents attached to it. This chiral carbon results in two possible stereoisomers: (R)-2-bromobutane and (S)-2-bromobutane.

When a reaction occurs at a chiral carbon, the stereochemistry of the reactant is usually retained in the product, assuming no racemization or inversion takes place during the reaction. In this case, the intermediate I has an (R) configuration, which implies that the product will also have an (R) configuration.

Therefore, the expected product is (R)-2-bromobutane.

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The molarity of the solution containing 0.325 moles of lactic acid in 250.0 mL of solution is 1.3 M (molar).

To determine the molarity of a solution, divide the moles of solute by the liters of solution. In this case, we have 0.325 moles of lactic acid dissolved in 250.0 mL of solution.

First, convert the volume of the solution from milliliters to liters:

250.0 mL * (1 L / 1000 mL) = 0.250 L

Now, use the moles of lactic acid and the liters of the solution to calculate the molarity:

Molarity = moles of solute / liters of solution

Molarity = 0.325 moles / 0.250 L

Molarity = 1.3 M

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True. TPN solutions greater than 4% must be given via a central line due to the increased risk of peripheral vein irritation, inflammation, and damage.

Central lines provide direct access to larger, more stable veins near the heart, reducing the likelihood of complications associated with peripheral administration. Additionally, central lines allow for a higher concentration of nutrients and medications to be administered, which is necessary for TPN solutions greater than 4%. When administering TPN solutions via a central line, it is important to monitor for any signs of infection or complications such as air embolism or catheter-related bloodstream infections. Nurses and other healthcare professionals must follow strict aseptic techniques during insertion and maintenance of the central line to minimize the risk of infection. It is also important to assess the patient's fluid and electrolyte balance regularly to ensure that they are receiving adequate nutrition and hydration.

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i think it is D

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The seasonal shifts of Earth's planetary wind and moisture belts are due to changes in the latitude that receives the sun's vertical rays.

The latitude refers to the specific geographic coordinates at some point of the Earth in relation to the Equator line.

Latitude and longitude are geographic coordinates that allow to localize a specific point in the world by using the center of the Earth's planet as point of origin.

The amount of sun rays received by a given latitude largely depends on the season since the Earth's planet has a light inclination that alter this amount of radiation.

In conclusion, the seasonal shifts are due to changes in the latitude that receives the sun's vertical rays.

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The element is most likely to be shiny is the calcium (Ca). The calcium is the metal.

The Calcium is the metal whereas as the Sulfur, Boron and the Carbon are the non-metals. Metallic lustre is is the common feature of the metals.The free electrons in the metals are responsible for the shiny appearance of the metals.  Metals have the low ionization energies, and when metals undergo the chemical reactions, they are often lose the electrons.

The Metals are the malleable and the ductile. The melting and the boiling points of the metals are the extremely high. The Shiny metals are the  excellent conductors of the electricity.

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The compound which contains  an alkaline earth metal and a halogen is CaCl₂.

Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.

Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:

1)Molecular compounds where in atoms are joined by covalent bonds.

2) ionic compounds where atoms are joined by ionic bond.

3)Inter-metallic compounds where atoms are held by metallic bonds

4) co-ordination complexes where atoms are held by co-ordinate bonds.

They have a unique chemical structure held together by chemical bonds Compounds have different properties as those of elements because when a compound is formed the properties of the substance are totally altered.

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Answer:

The answer is b.

Explanation:

Amorphous solids have two characteristic properties. When cleaved or broken, they produce fragments with irregular, often curved surfaces; and they have poorly defined patterns when exposed to x-rays because their components are not arranged in a regular array. An amorphous, translucent solid is called a glass.

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The symbol of barium ion is Ba²⁺. Barium looses two electrons and get positively charge, and it became cation.

Positively charged ions are known as cations. Negatively charged ions are referred to as anions. A charged atom or molecule is an ion. A balanced atom will change into a positively charged cation if one or more of its electrons are lost.

Because they are positively charged and move toward the negative electrode in an electrical field, these ions are referred to as "cations."

The barium ion has a charge of 2+, or a positive charge of two. To become a positively charged ion known as a cation, the barium ion must give up two electrons. Atoms replicate the electron configuration of the closest noble gas by transforming into ions.

Thus,  To become a positively charged ion known as a cation, the barium ion must give up two electrons.

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The absorption at 2250 cm^-1 in the infrared (IR) spectrum suggests the presence of a C≡N triple bond, indicating the possible presence of a nitrile functional group (R-C≡N) in the compound.

Here is one possible structure for a compound with the molecular formula C4H7N that exhibits absorption at 2250 cm^-1 in the IR spectrum:

mathematica

Copy code

    H

    |

H-C≡N

    |

    H

This structure represents a nitrile group (also known as a cyano group), where C≡N represents the triple bond between carbon (C) and nitrogen (N), and the hydrogen (H) atoms are attached to the carbon (C) atom.

Please note that this is just one example, and other isomers or structures may also exist for a compound with the given molecular formula C4H7N.

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Answer: When fossil fuels are burned, they release nitrogen oxides into the air and has a significant impact on global warming. Nitrogen oxide is 300 times more potent than carbon dioxide, and it also depletes the ozone layer.

Answer:

The chemical elements most likely to form covalent bonds are those that share electrons, such as carbon, as opposed to those that take them from another element to form an ionic bond. In general, they are nonmetals with similar electronegativities.

Explanation:

Answer:a

Explanation:

The radius of a right circular cylinder is 3.09 inches.

Volume can be given as the space occupied by the matter. The volume of the cylinder is given as:

Volume = πr²h

The total surface area (TSA) of a right circular cylinder is given as:

Area = 2πr(h + r)

The volume of the can is 60 cubic inch. Substituting the value:

60 =  πr²h

h = 60/ πr²

Substituting the value for the height in the TSA formula:

\(\rm Area = 2\pi r (\frac{60}{\pi r^2} + r)\\\\Area = 2\pi r \;\times\;\frac{60}{\pi r^2}\;+\;2\pi r^2\\\\Area = \frac{240}{r^3}\;+\;4\pi\)

This is the minimum surface area.

The value of the minimum area at the critical point is 0. Thereby:

\(\rm 0= \dfrac{240}{r^3}\;+\;4\pi\\\\r^2=\dfrac{120}{4\pi}\\\\r=3.09\;inches\)

The radius of a right circular cylinder is 3.09 inches.

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Answer:

Rate cup 1: 36.00 tsp/h.

Rate cup 2: 59.50 tsp/h.

Rate cup 3: 70.13 tsp/h.

Explanation:

Based on the given example, the units must be in tsp/hour. To do this we just have to divide tsp by seconds and then convert it to hours remembering that 1 hour equals 3600 seconds.

Let's calculate each case:

- Cup 1: 1 tsp, 1 minute 40 seconds. Remember that 1 minute equals 60 seconds, so 1 minute and 40 seconds equals 100 seconds. The calculation of the rate will look like this:

The rate of cup 1 is 36.00 tsp/h.

- Cup 2: 2 tsp, 2 minutes 1 second. As we saw before 1 minute equals 60 seconds, so 2 minutes equals 120 seconds. 2 minutes and 1 second equals 121 seconds. The rate of cup 2 will be calculated as:

The rate of cup 2 is 59.50 tsp/h.

- Cup 3: 3 tsp, 2 minutes 34 seconds. 2 minutes are the same that 120 seconds, so 2 minutes 34 seconds equals 154 seconds. The rate of cup 3 is calculated as follows:

The rate of cup 3 is 70.13 tsp/h.

Answer:

They are isotopes of each other ,meaning they are made of chemically the same substance but the number of neutrons is different.

Explanation:

Answer:

1.2 × 10³ L

Explanation:

Step 1: Calculate the total number of gaseous moles

n = nH₂ + nCl₂ = 100 mol + 100 mol = 200 mol

Step 2: Convert 30 °C to Kelvin

We will use the following expression.

K = °C + 273.15 = 30 + 273.15 = 303 K

Step 3: Calculate the volume of the container

We will use the ideal gas equation.

P × V = n × R × T

V = n × R × T / P

V = 200 mol × (0.0821 atm.L/mol.K) × 303 K / 4 atm = 1.2 × 10³ L

Answer:

Molecules change speed based on temperature and state of matter. The warmer they are, the faster they move and vice versa. Solids are at a lower temperature than gases and liquids, which means the molecules are moving slower, and hold together better, also explaining why solids aren't malleable.

The particles gather kinetic energy and accelerate as the temperature rises.

Kinetic energy is defined as an object is the energy it has since it is in motion. It is explained as the amount of effort required to move a mass-based body from rest to the indicated velocity. The body keeps its kinetic energy, which it acquired during acceleration, unless its speed changes.

The actual average speed of the particles is influenced by both their mass and temperature; at a given temperature, larger particles travel more slowly than lighter ones. Temperature and the physical state of the materials affect the speed of molecules. They move more quickly in warmer temperatures and vice versa. Since solids have lower temperatures than gases and liquids, their molecules move more slowly and adhere to one another more tightly, which also explains why solids aren't bendable.

Thus, the particles gather kinetic energy and accelerate as the temperature rises.

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