what is the cost of an ounce of uranium

Answer:

D. the solvent particles to be spread further out and have more to move, increasing their kinetic energy.

Explanation:

Answer: C. oil

Explanation:

Answer:

A. Reduced precipitation is the cause of drought.

Explanation:

Reduced precipitation begins to insufficient water availability because water catch basins or tanks tend to dry out. When it drains out, people tend to start working and drying out the backup water sources and stored ones. Until such time, that the reservoirs of water will completely be dried out. And there will be no more water for them to use and there will be a drought.

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Answer:

Option A

Explanation:

Answer: The alkane containing 100 hydrogens will be \(C_{49}H_{100}\)

Explanation:

Saturated hydrocarbons are defined as the hydrocarbons in which a single bond is present between carbon and carbon atoms.These are called as alkanes. The general formula for these hydrocarbons is \(C_nH_{2n+2}\)

As given number of hydrogen atoms is 100, therefore the value of (2n+2) = 100

2n = 98

n = 49

Thus the formula for the alkane containing 100 hydrogens will be \(C_{49}H_{100}\)

The formula for the alkane containing 100 hydrogens is \(C_{49}H_{100\)

It refers to hydrocarbons where a single bond is present that lies between carbon and carbon atoms. These are known as alkanes. The general formula for these hydrocarbons is \(C_nH_{2n+2}\)

Since the given number of hydrogen atoms is 100, so the value of (2n+2) = 100

So,

2n = 98

n = 49

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The final pressure of the fluorinated organic gas in the cylinder is 363.7 kPa.

To solve this problem, we can use the ideal gas law, which states that

PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

Since the gas in the cylinder is fluorinated organic gas, we can assume that it behaves as an ideal gas.

First, we need to convert the volume and pressure to SI units, so we have

V1 = 0.94 L, P1 = 156 kPa, and V2 = 0.402 L.

We can also assume that the temperature remains constant, so T1 = T2.

Using the ideal gas law, we can write:

P1V1 = nRT1 and P2V2 = nRT2

Since T1 = T2, we can write:

P1V1/P2V2 = nR/nR = 1

Solving for P2, we get:

P2 = P1V1/V2 = 156 kPa x 0.94 L / 0.402 L = 363.7 kPa

In summary, we can use the ideal gas law to calculate the final pressure of a compressed fluorinated organic gas in a cylinder when the initial volume and pressure are given. It is important to convert the units to SI units and assume that the temperature remains constant.

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\(\\ \rm\Rrightarrow \lambda=\dfrac{c}{\nu}\)

\(\\ \rm\Rrightarrow \lambda=\dfrac{3\times 10^8}{3.44\times 10^9}\)

\(\\ \rm\Rrightarrow \lambda=0.872\times 10^{-6}\)

\(\\ \rm\Rrightarrow \lambda=0.9\mu m\)

1-ethyl-4-methylcyclohexane: cis or trans is more stable isomer.

Isomers are substances with the exact same number of atoms as other compounds, meaning they share a similar empirical formula, but they differ from one another in terms of how the atoms are ordered. 0r One of two or more substances with the same chemical formula but distinct atom configurations inside the molecules, as well as potential differences in their physical and chemical characteristics. Constitutional, stereoisomers, enantiomers, and diastereomers are the several types of isomers. Lipids that are isomers or have a mass that is almost identical are called isobars.

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Answer:

Oxides of Nitrogen (NOx)

NOx is a collective term used to refer to two species of oxides of nitrogen: nitric oxide (NO) and nitrogen dioxide (NO2).

Annual mean concentrations of NO2 in urban areas are generally in the range 10-45 ppb (20-90 µgm-3). Levels vary significantly throughout the day, with peaks generally occurring twice daily as a consequence of "rush hour" traffic. Maximum daily and one hourly means can be as high as 200 ppb (400 µgm-3) and 600 ppb (1200 µgm-3) respectively.

Globally, quantities of nitrogen oxides produced naturally (by bacterial and volcanic action and lightning) far outweigh anthropogenic (man-made) emissions. Anthropogenic emissions are mainly due to fossil fuel combustion from both stationary sources, i.e. power generation (21%), and mobile sources, i.e. transport (44%). Other atmospheric contributions come from non-combustion processes, for example nitric acid manufacture, welding processes and the use of explosives.

Sulphur Dioxide (SO2)

SO2 is a colourless gas. It reacts on the surface of a variety of airborne solid particles, is soluble in water and can be oxidised within airborne water droplets.

Annual mean concentrations in most major UK cities are now well below 35 ppb (100 µgm-3) with typical mean values in the range of 5-20 ppb (15-50 µgm-3). Hourly peak values can be 400-750 ppb (1000-2000 µgm-3) on infrequent occasions. Natural background levels are about 2 ppb (5 µgm-3).

The most important sources of SO2 are fossil fuel combustion, smelting, manufacture of sulphuric acid, conversion of wood pulp to paper, incineration of refuse and production of elemental sulphur. Coal burning is the single largest man-made source of SO2 accounting for about 50% of annual global emissions, with oil burning accounting for a further 25-30%.

Carbon Monoxide (CO)

Carbon Monoxide is a colourless, odourless, tasteless gas that is slightly lighter than air.

Natural background levels of CO fall in the range of 10-200 ppb. Levels in urban areas are highly variable, depending upon weather conditions and traffic density. 8-hour mean values are generally less than 10 ppm (12 mgm-3) but have been known to be as high as 500 ppm (600 mgm-3).

CO is an intermediate product through which all carbon species must pass when combusted in oxygen (O2). In the presence of an adequate supply of O2 most CO produced during combustion is immediately oxidised to carbon dioxide (CO2). However, this is not the case in spark ignition engines, especially under idling and deceleration conditions. Thus, the major source of atmospheric CO is the spark ignition combustion engine. Smaller contributions come from processes involving the combustion of organic matter, for example in power stations and waste incineration.

Ozone (O3)

O3 is the tri-atomic form of molecular oxygen. It is a strong oxidising agent, and hence highly reactive.

Background levels of O3 in Europe are usually less than 15 ppb but can be as 100 ppb during summer time photochemical smog episodes. In the UK ozone occurs in higher concentrations during summer than winter, in the south rather than the north and in rural rather than urban areas.

Most O3 in the troposphere (lower atmosphere) is formed indirectly by the action of sunlight on nitrogen dioxide - there are no direct emissions of O3 to the atmosphere. About 10 - 15% of tropospheric O3 is transported from the stratosphere where it is formed by the action of ultraviolet (UV) radiation on O2. In addition to O3, photochemical reactions involving sunlight produce a number of oxidants including peroxyacetyl nitrate (PAN), nitric acid and hydrogen peroxide, as well as secondary aldehydes, formic acid, fine particulates and an array of short lived radicals. As a result of the various reactions that take place, O3 tends to build up downwind of urban centres where most of NOx is emitted from vehicles.

Explanation:

Answer:

2000 km/sec

1km=1000m

2000×1000

2000,000 m/sec

Explanation:

HNO3(aq) is the compound produced by a neutralization

Answer:

Explanation:

At constant pressure, the heat of reaction is equal to the enthalpy change of the system. Most chemical reactions occur at constant pressure, so enthalpy is more often used to measure heats of reaction than internal energy

For a chemical reaction, the heat of reaction, also known as enthalpy change (∆H), is equal to the difference between the total energy of the products and the total energy of the reactants.

Enthalpy change represents the amount of heat energy exchanged or released during the course of a reaction. The heat of reaction can be positive (endothermic), indicating that the reaction absorbs heat from the surroundings, or negative (exothermic), indicating that the reaction releases heat to the surroundings.

The magnitude of the heat of reaction is a measure of the amount of heat energy involved in the reaction.

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Answer:

Acceleration

Explanation:

Acceleration doesn't change one moment to the next, and therefore, doesn't count as a force.

The answer option which is not a force is: C. Acceleration.

A force can be defined as a push or pull of an object or physical body, which typically results in a change of motion (acceleration), especially due to the interaction of the object with another.

In Science, the three (3) most common examples of a force include the following:

In conclusion, acceleration is not an example of a force but a change in the rate of velocity of an object with respect to time.

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Answer:

hi... so I can help you but just please translate to English so I can help

Answer: An object emitting radiation as its temperature is above 0°C.

Explanation:

this is based on the Stefan-Boltzmann law. Hence, when the rods in an oven heat up above absolute zero, they begin to start emitting radiation. It should be noted at this point that objects do not "emit" conduction and thus all options that involved "emitting conduction" are subsequently wrong.

When a mixture of benzaldehyde and formaldehyde is heated with an aqueous NaOH solution, it undergoes a reaction called the Cannizzaro reaction. In this reaction, one molecule of benzaldehyde is reduced to benzyl alcohol.

While another molecule of benzaldehyde is oxidized to benzoic acid. The formaldehyde, on the other hand, is oxidized to formic acid.

The reaction can be summarized as follows:
Benzaldehyde + Formaldehyde + NaOH -> Benzyl alcohol + Benzoic acid + Formic acid

The heating of the mixture of benzaldehyde and formaldehyde with aqueous NaOH solution results in the formation of benzyl alcohol, benzoic acid, and formic acid.

When benzaldehyde and formaldehyde are heated with an aqueous NaOH solution, they undergo the Cannizzaro reaction, which leads to the formation of benzyl alcohol, benzoic acid, and formic acid.

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Hard water is not typically caused by the concentration of dissolved oslolum (assuming you meant "solutes") but rather by the presence of high concentrations of dissolved minerals, such as calcium and magnesium ions

The net ionic equation for the formation of calcium carbonate (CaCO3) is as follows:

Ca2+ (aq) + CO32- (aq) → CaCO3 (s)

In this equation, the calcium ions (Ca2+) from the dissolved calcium compounds in hard water react with carbonate ions (CO32-) to form insoluble calcium carbonate precipitate (CaCO3), which appears as a white solid. The precipitation occurs because the solubility product of calcium carbonate is exceeded, resulting in the formation of a solid.

The formation of a precipitate is driven by the principle of solubility. When the concentration of a dissolved compound exceeds its solubility limit, the excess ions come together and form a solid. In the case of hard water, when the concentration of calcium ions and carbonate ions surpasses their respective solubility limits, calcium carbonate precipitate forms.

Regarding the replacement of calcium ions with sodium ions, if calcium ions were replaced with sodium ions in the net ionic equation, the reaction would be different. Sodium ions (Na+) do not form insoluble compounds with carbonate ions, and sodium carbonate (Na2CO3) is soluble in water.

In summary, the formation of calcium carbonate precipitate in hard water is driven by the reaction between calcium ions and carbonate ions, leading to the exceeding of the solubility product and subsequent precipitation. If calcium ions are replaced with sodium ions, no precipitate would form as sodium carbonate remains soluble in water.

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The statement that "there are many types of energy" is correct. Energy is a fundamental concept in science and refers to the ability of a system to do work or cause a change. There are many different types of energy, each with its own characteristics and properties.

One of the most familiar forms of energy is light energy, which is produced by the sun and other sources of radiation. Sound energy is another form of energy that is produced by vibrations in matter, and it can be detected by the human ear. Thermal energy is the energy associated with the temperature of an object, and it is related to the movement of atoms and molecules within that object.

Chemical energy is stored in the bonds between atoms and molecules, and it is released during chemical reactions. Electrical energy is associated with the movement of electrons through a conductor, and it is used to power many of the devices we use every day. Other forms of energy include nuclear energy, gravitational energy, and kinetic energy.

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Answer:

The entropy increases when sodium chloride is dissolved in water. The ions that were held together in crystalline solid are now moving in all possible directions. Thus entropy increases.

Sodium chloride(NaCl) in water is an endothermic reaction, which means the heat is absorbed. So it will be greater than 0.

Answer:

uhm

Explanation:

Answer:

MRCORRECT has answered the question

Explanation:

13 electrons

So... for the element of ALUMINUM, you already know that the atomic number tells you the number of electrons. That means there are 13 electrons in a aluminum atom. you can see there are two electrons in shell one, eight in shell two, and three in shell three.

7 electrons

So... for the element of NITROGEN, you already know that the atomic number tells you the number of electrons. That means there are 7 electrons in a nitrogen atom. Looking at the picture, you can see there are two electrons in shell one and five in shell two.

Answer:

chemistry

Explanation:

it is the study of structer, composition and change that matter undergoes

The concentration cell has a voltage of 0.21 V at 25 °C with a cathode Cu2+ concentration of 1.6×10−3 mol/L.

In a concentration cell, the voltage is generated due to the concentration difference of the same ion species. In this case, the Cu/Cu2+ concentration cell consists of two copper electrodes immersed in a solution of Cu2+ ions. The cathode has a higher concentration of Cu2+ ions (1.6×10−3 mol/L) compared to the anode.

The standard cell potential for the Cu/Cu2+ half-reaction is 0.34 V. However, in this case, the voltage is 0.21 V, indicating a non-standard condition. The lower voltage suggests a higher concentration of Cu2+ at the anode.

Overall, the concentration cell will generate a voltage until equilibrium is reached, balancing the concentration gradient.

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Action potentials B and C are formed due to the conduction of the action potentials along the neurons, even though they were initiated at different distances. Therefore, the correct answer is (D): A=leak channels and B=voltage-gated channels.

An action potential is a short-lived event in which the electrical potential of a neuron, muscle cell, or gland cell increases briefly, subsequently returning to its resting level.

Their occurrences may be caused by various signals, including changes in voltage, pressure, mechanical stretch, or neurotransmitter chemicals, and they may propagate rapidly across long distances.

The opening and closing of specific ion channels are responsible for action potential generation and propagation. Voltage-gated ion channels, such as those for sodium and potassium ions, are the most significant of these channels, but other channels, such as leak channels, are also essential.

Leaks channels are ion channels that, when open, allow ions to move through them at a constant, passive rate. When voltage-gated channels are activated, they allow ions to pass through the cell membrane by opening the gates.

Therefore, statement D is correct, where A represents leak channels and B represents voltage-gated channels.

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Answer:

The net force is 0

Explanation:

because both people on either side are pulling the rope with the same force

Answer:

Got what wrong? A question?

The second peak is higher than the first peak.

Explanation:

For each run, there are two peaks of voltage because the magnet induces a voltage in the solenoid as it falls through it. The voltage induced by the magnet changes direction as it passes through the solenoid, creating two peaks. The two peaks point in opposite directions because the magnetic field changes direction as the magnet falls through the solenoid. The second peak is higher than the first peak because of the changing magnetic field.

A solenoid is an electrical component that is used to generate a magnetic field when an electric current is passed through it. When a magnet falls through a solenoid, it induces a voltage in the solenoid, which can be detected using a voltmeter or oscilloscope.

The voltage induced by the magnet changes direction as it passes through the solenoid, creating two peaks. The two peaks point in opposite directions because the magnetic field changes direction as the magnet falls through the solenoid. This is due to the fact that the magnet's north pole attracts the south pole of the solenoid, and vice versa.

As a result, the direction of the magnetic field in the solenoid changes as the magnet falls through it. The second peak is higher than the first peak because of the changing magnetic field. The strength of the magnetic field is directly proportional to the rate of change of the magnetic field. The rate of change of the magnetic field is greatest when the magnet is in the center of the solenoid, resulting in a larger induced voltage.

Therefore, the second peak is higher than the first peak.

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A. In this pair, H3O+ is the stronger acid because it can donate a proton more easily than HCN.
B. H2SO4 is the stronger acid in this pair because it is a strong acid, while HCN is a weak acid.
C. HS? is the stronger acid in this pair because it has a greater positive charge on the sulfur atom, making it more acidic than H2S.

The stronger acid in each pair.

A. Between HCN and H3O+, the stronger acid is H3O+. H3O+ is a stronger acid due to its higher ability to donate a proton.

B. Between H2SO4 and HCN, the stronger acid is H2SO4. H2SO4 is a stronger acid because it has a higher degree of ionization and can donate more protons than HCN.

C. Between HS- and H2S, the stronger acid is H2S. H2S is a stronger acid because it more readily donates a proton compared to HS-.

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The compound formed when magnesium oxide reacts with water is magnesium hydroxide (Mg(OH)₂).

Magnesium oxide (MgO) is an ionic compound consisting of magnesium cations (Mg²⁺) and oxide anions (O²⁻). When it reacts with water (H₂O), the oxygen atom in water attracts the magnesium cation, leading to the formation of magnesium hydroxide.

The reaction can be represented as follows:

MgO + H₂O → Mg(OH)₂

In the resulting compound, magnesium hydroxide, there are two hydroxide ions (OH-) for every magnesium ion (Mg²⁺). The chemical formula Mg(OH)₂ represents this ratio.

Magnesium hydroxide is an alkaline compound and is commonly used as an antacid to treat heartburn and indigestion. It is also used in various industrial applications.

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Answer:

1280.27 g

Explanation:

Pressure = 22 mmHg / 760 = 0.0289 atm (Converting to atm by dividing by 760)

Volume = 2.7 L

Temperature = 31 ∘C + 273 = 304 K

Mass = ?

Using the ideal gas equation;

PV = nRT

n = RT / PV = 0.0821 * 304 / ( 0.0289 * 2.7)

n = 319.86 mol

Mass = Number of moles * Molar mass

Mass = 319.86  * 4.002602

Mass = 1280.27 g

Gay-Lussac's law: \(\frac{V1}{T1}\)=\(\frac{V2}{T2}\)

We need to convert temperature from Celsius to Kelvin

-55 C = 218 K

30 C = 303 K

V2 = V1*T2 / T1 = 0.550 *303 / 218 = 0.764 l