How does a barometer work? Is the column of mercury in a barometer shorter when it is on a mountaintop or at sea level? Explain.

If this atom has one additional neutron but the other subatomic particles remained the same as shown, this slightly different atom would be called an isotope.

An isotope is a variant of an atom that has a different number of neutrons. Because isotopes of the same element have the same number of protons in the nucleus, they all have the same atomic number. However, they can differ in mass number, and therefore in atomic mass. In a neutral atom, the number of protons in the nucleus equals the number of electrons that orbit the nucleus, giving the atom a net electrical charge of zero.

However, the number of neutrons in the nucleus can differ, implying that isotopes of the same element may have different atomic masses.

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Suspension is Heterogeneous mixtures containing large particles that are likely to separate from each other when allowed to sit still.

What kind of mixture is suspension?

A suspension is a combination of liquid and solid particulate matter. The particles do not disintegrate in this situation. The liquid and the particles are combined, distributing the particles evenly throughout. Within the fluid, they are "suspended."

What is Heterogeneous mixtures?

A combination is said to be heterogeneous if its composition is not constant throughout. Vegetable soup is a complex concoction. The amounts of the various veggies and other components will vary from mouthful to mouthful.

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Reflecting telescopes are preferred for scientific research because they are better suited for gathering large amounts of light and producing high-quality images. However, refracting telescopes are still popular for amateur astronomers and for viewing objects on Earth.

Reflecting telescopes are different from refracting telescopes because reflecting telescopes use mirrors, whereas refracting telescopes use lenses. The reflecting telescope was invented in 1668 by Sir Isaac Newton, and it has since become one of the most popular types of telescopes.
Reflecting telescopes use a mirror to gather and focus light, while refracting telescopes use a lens to do the same thing. Reflecting telescopes can be made much larger than refracting telescopes because it is easier to make large mirrors than it is to make large lenses. The mirror in a reflecting telescope is placed at the back of the telescope, and it gathers and reflects light back to a secondary mirror, which then reflects the light to the eyepiece. The eyepiece is where the observer looks through the telescope.In contrast, the lens in a refracting telescope is placed at the front of the telescope, and it gathers and bends light as it passes through. The lens focuses the light onto an eyepiece at the back of the telescope. Refracting telescopes are generally smaller than reflecting telescopes because of the difficulty of making large lenses.
Another difference between reflecting and refracting telescopes is the way they are constructed. Reflecting telescopes have a simple tube that houses the mirrors and eyepiece, while refracting telescopes have a more complex design with a long tube that contains the lens and eyepiece.

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How close the magnets are together and which direction the poles are pointed to

Answer:

Mass of each weight = 56.7 gram per piece

Explanation:

Given:

Lead’s density = 11.34 g/mL

Number of weights = 50

Volume of box = 250 mL

Find:

Mass of each weight

Computation:

Mass = volume x density

Mass = 250 x 11.34

Mass = 2,835 gram

Mass of each weight = Total Mass / Number of weights

Mass of each weight = 2,835 / 50

Mass of each weight = 56.7 gram per piece

Answer: 0.0054 s

Explanation: There is an inverse relation between the frequency  and the period  of a wave (a sound wave in this case):

T=1/F

Where f = 1.85 (10)² H z

Hence : T = 1/1.85 (10)² H z T =0.0054s

Answer:

among us

Explanation:

red among us

tama

Answer:

Balanced forces do not cause a change in motion.

The result is no motion. Balanced forces can cancel each other out. Any time there is a balanced force, the object does not move.

Explanation:

Answer:

The result is no motion. Balanced forces can cancel each other out. Any time there is a balanced force, the object does not move.

Explanation: MARK MOST BRAINLIEST PLEASE

To make a 2 M solution, the correct method is to dissolve 1 mole of the compound in 2 L of water. This results in a concentration of 2 moles per liter, which corresponds to a 2 M solution.

The correct option is C.

To make a 2 M (molar) solution of a compound, we need to dissolve an appropriate amount of the compound in a given volume of solvent, typically water, to achieve a concentration of 2 moles per liter.

Molarity (M) is defined as moles of solute per liter of solution. To prepare a 2 M solution, we need a concentration of 2 moles per liter. This means that for every liter of solution, we should have 2 moles of the compound.

Option A suggests dissolving 1 molar mass of the compound in 2 L of water. However, molar mass is not equal to moles. Molar mass represents the mass of one mole of the compound.

Option B suggests dissolving 2 moles of the compound in 1 L of water. This would result in a concentration of 2 moles per liter, which matches the desired 2 M concentration. However, the given option indicates dissolving 2 moles in 1 L, which contradicts the definition of molarity.

Option C suggests dissolving 1 mole of the compound in 2 L of water. This aligns with the definition of molarity, as it gives us a concentration of 1 mole per liter. To achieve the desired 2 M concentration, we would need to double the amount, resulting in 2 moles per liter.

Option D suggests dissolving 2 g of the compound in 1 L of water. This option does not consider the molar mass of the compound and assumes that the molar mass is equal to 2 grams per mole, which is not always the case.

In conclusion, option C is the correct choice for making a 2 M solution, as it involves dissolving 1 mole of the compound in 2 L of water.

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Answer:

It had changed by .001 liters because of the way that cold air can't evaporate more than .5 liters of air

Explanation:

The statement "covalent bonds form when an electron is completely lost or gained from an atom" is not true about covalent bonds.

Covalent bonds occur when atoms share electrons to complete their valence shells, rather than completely losing or gaining electrons. This sharing allows atoms to achieve stability by fulfilling the octet rule. In a single covalent bond, a pair of electrons is shared between two atoms, represented by a line between them.

A covalent molecule consists of one or more covalent bonds. The incorrect statement describes an ionic bond, which forms through the complete transfer of electrons from one atom to another, creating oppositely charged ions that are attracted to each other.

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A decomposition reaction occurs when one reactant breaks down into two or more products. It can be represented by the general equation: AB → A + B. In this equation, AB represents the reactant that begins the reaction, and A and B represent the products of the reaction.

RbCI = rubidium chloride

Answer:

Endothermic animals are those that must generate their own heat to maintain an optimal body temperature.

Explanation:

Answer:

There

Explanation:

Endothermic animals are those that must generate their own heat to maintain an optimal body temperature. In ordinary language, these animals are commonly referred to as "warm-blooded." The term endotherm comes from the Greek endon, meaning within, and thermos, which means heat

The mathematical expression for h is v²/(2g) which is based on conservation of energy and the correct option is option B.

The law of conservation of energy states that energy can neither be created nor be destroyed. Although, it may be transformed from one form to another.

Example, when a fruit is falling to the bottom, potential energy is getting converted into kinetic energy.

Conservation of energy implies

KEinitial = PEfinal

mv²/2 = mgh

therefore, h = v²/2g.

Thus, the ideal selection is option B.

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9.14moles

According to the Avogadro's constant,

We are to determine the moles of 5.50 x 10^24 molecules of butane. This is expressed as:

Therefore the required mole of butane is 9.14moles

Answer:

the eye socket

Explanation:

the area around the eye is called the eye socket or the eye orbit.

The percent yield of a reaction that produces 12.5 g of the gas freon cf2cl2 from 32.9g of ccl4 and excess HF is 48.33%

CCl4 + 2HF  → CCl2F2 + 2HCl  

Mass of CCl4 = 32.9 g

Mass of CCl2F2 (practical yield)  = 12.5 g

Molecular mass of CCl4 = 153.82 g / mol

Number of moles of CCl4 = Mass of CCl4 / Molecular mass of CCl4

                                           = 32.9 / 153.82

                                           = 0.2139 mol

Number of moles of CCl4 = Number of moles of CF2Cl2 = 0.2139 mol

Molecular mass of CF2Cl2 = 120.91 g / mol

Mass of CCl2F2 = Number of moles of CF2Cl2 * Molecular mass of CF2Cl2

                           = 0.2139 * 120.91

Mass of CCl2F2 ( Theoretical yield ) = 25.8626 g

Percentage yield = Practical yield / Theoretical yield  * 100

                             = 12.5 / 25.8626 * 100

Percentage yield = 48.33%

Hence, the percentage yield of CF2Cl2 is 48.33%

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The percent yield of a reaction that produces 12.5 g of the gas from CF2Cl2 from 32.9 g of CCl4 and excess HF is 48.33%.

CCl4 + 2HF --- CCl2F2 + 2HCl

Mass of CCl4 = 32.9g

Mass of CCl2F2(practical yield) = 12.5g

Molar mass of CCl4 = 153.82 g/mil

Number of moles of CCl4= given mass / molar mass

= 32.9/153.82

= 0.2139mol

As we know

Number of moles of CCl4 = Number of moles of CF2Cl2 = 0.2139 mol

Molecular mass of CF2Cl2 = 120.91 g/ mol

Mass of CCl2F2= number of moles of CF2Cl2 × molar mass of CF2Cl2= 0.2139× 120.91

Mass of CF2Cl2 (Theoretical yield) = (12.5/25.8626) × 100

Percentage yield= 48.33%

Thus, we concluded that the percentage yield of CF2Cl2 is 48.33%.

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A violent change in weather occurs as the cold air mass digs underneath the warm air mass creating thunderstorms and snowstorms in the winter.

Weather is the state of the atmosphere, describing for example the degree to which it is hot or cold, wet or dry, calm or stormy, clear or cloudy.On Earth, most weather phenomena occur in the lowest layer of the planet's atmosphere, the troposphere,just below the stratosphere.

Weather refers to day-to-day temperature, precipitation, and other atmospheric conditions, whereas climate is the term for the averaging of atmospheric conditions over longer periods of time.When used without qualification, "weather" is generally understood to mean the weather of Earth.

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The wavelength of these radio waves with a frequency 18GHz is equal to 0.0167m.

Microwave transmission is the method of transmission of information by electromagnetic waves that lie in the microwave range (1 m - 1 mm) of the electromagnetic spectrum. Microwave signals are limited to the line of sight, so long-distance transmission using these signals needs a series of repeaters to create a microwave relay network.

The relationship between wavelength (λ) and frequency (ν) can be expressed as follow:
λ = c/ν

Given, the frequency of the radio wave = 18GHz

The frequency in (per second) = 18 × 10⁹ s⁻¹

The wavelength of the radiowaves, λ = c/ν

where c is the speed of light and has a value of 3× 10⁸ m/s.

λ = c/ν = 3× 10⁸ m/s./ 18 × 10⁹ s⁻¹

λ = 0.0167 m

Therefore, the wavelength of these radio waves is equal to 0.0167m.

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Your question was incomplete, most probably the complete question was,

NASA communicates with the Space Shuttle and International Space Station using Ku-band microwave radio. Suppose NASA transmits a microwave signal to the Space Shuttle using radio waves with a frequency of 18GHz. Calculate the wavelength of these radio waves.

Be sure your answer has the correct number of significant digits.

The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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Answer: Water is the material an ocean wave moves through.

Explanation: An ocean wave and a sound wave are very similar because the water acts as the medium. The waves travel through the water just like a sound wave would travel through the medium.

Yea pretty much

Explanation:

The chloroplast was not in need of glucose as itself manufactures and stores glucose during the process of photosynthesis.

It is defined as a process by which plants and other photosynthetic organisms convert the light energy in to chemical energy  through the process of cellular respiration.

Some of the energy which is converted  is stored in molecules of carbohydrates like sugar and starches  which are made up of from carbon dioxide and water . Photosynthetic organisms which can perform photosynthesis  are algae and cyanobacteria. Photosynthesis is largely responsible for producing and maintaining the content of oxygen in earth's atmosphere.

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Due to a phenomenon known as diamagnetic anisotropy, aromatic protons emit signal(s) in the range of 7-8 ppm.

In aromatic compounds with resonance in the 7–8 ppm range, this impact is more prominent. A ring current is the term for the movement of the p electrons in benzene, and it induces an extra magnetic field that helps the protons. While the signals attributable to its aromatic carbons were seen in the range from 128 to 133 ppm, those for the aromatic phthalate ring protons were seen in the range from 7.63 to 7.82 ppm. ... the cis/trans-cyclohexylene CH carbon signals were detected in the range of 70.8 to 72.3 ppm.

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When one equivalent of HBr reacts with the given compound, two different products can be formed: kinetic and thermodynamic.The kinetic product is formed through the faster reaction pathway, which usually involves a lower activation energy.

In this case, the kinetic product is formed by adding the HBr molecule to the more substituted carbon of the double bond. This results in a more stable intermediate, which can then form the kinetic product through proton transfer. The kinetic product is shown below:
[Insert image of kinetic product].The thermodynamic product is formed through the slower reaction pathway, which usually involves a higher activation energy.

In this case, the thermodynamic product is formed by adding the HBr molecule to the less substituted carbon of the double bond.This results in a less stable intermediate, which can then form the thermodynamic product through proton transfer. The thermodynamic product is shown below:[Insert image of thermodynamic product]

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Answer:

3.5x1024 3.5 x 10 24 carbon dioxide molecules weighs 256 g.

The correct statement about the Big Bang Theory is D) It is a scientific theory because it is a widely accepted explanation of nature. The Big Bang Theory is a scientific theory that describes the origin and evolution of the universe.

The correct statement about the Big Bang Theory is D) It is a scientific theory because it is a widely accepted explanation of nature.

The Big Bang Theory is a scientific theory that describes the origin and evolution of the universe. It is based on extensive observational evidence, such as the observed redshift of galaxies, the cosmic microwave background radiation, and the abundance of light elements in the universe. These pieces of evidence support the idea that the universe began with a hot, dense state and has been expanding and evolving over billions of years.

As a scientific theory, the Big Bang Theory is subject to scientific scrutiny and can be modified or refined based on new evidence or observations. However, it is widely accepted within the scientific community due to the extensive empirical support and its ability to explain a range of cosmological phenomena.

Therefore, option D is the correct statement regarding the nature of the Big Bang Theory as a widely accepted scientific explanation of the universe's origin and evolution.

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Note The Complete Question

The Big Bang Theory states that the universe started with an explosion and expanded over the next few billion years.

Which statement is correct about the Big Bang Theory?

A)It is an everyday life theory because it is based on observation.

B)It is a scientific theory because it cannot be changed or replaced.

C)It is an everyday life theory because it is not supported by evidence.

D)It is a scientific theory because it is a widely accepted explanation of nature

Answer:

The answer is (2) Protons

Each isotope's atomic mass unit is substituting. We are given the following percentages: 90% divided by 100% of x 35, 8% divided by 100% of x 37, and 2% divided by 100% of x 38. As a result, the averag atomic mass unit is near to 30 at 35.

Atoms of the same element that have variable numbers of neutrons but the same number of protons are called isotopes.

Average The arithmetic mean is calculated by adding a set of numbers, dividing by their count, and then taking the result. The average of 2, 3, 3, 5, 7, and 10 is one example.

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