5. Predict the major product(s) of the following reactions. Indicate stereochemistry when necessary. 1. Naci OH 2. H2O Br NaOH ? HCI 1. NaN 1. LAH 2. H2O 2. H,0 CH OH H,SO CHRONa CH,OH 1, KCN. 1. HgCLI 2. NHẠC 2. H30

Answer:

They have mobile charged particles.

Explanation:

Plasma refers to very hot matter such that the electrons in matter are ripped away from the atoms leading to the formation of an ionized gas.

We know that the carriers of electricity are charged particles. Any state of matter that has an abundance of charge carriers will definitely be a good conductor of electricity.

Therefore, plasmas are good conductors of electricity because they have a lot of mobile charged particles.

Answer:

50%, pups haven't solidfur

2. DOMINANT FF IS NOT POSSIBLE

In an ecosystem in the hilly areas the should built its factory away from the river so that pollution does not reach the river.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Chloride ions outside the neuron would make it very difficult for a depolarization to occur.

In a normal resting state, the internal environment of a neuron has a net negative charge compared to the external environment.

This is known as the resting potential. During depolarization, this membrane potential switches from negative to positive very rapidly due to an influx of positively-charged cations (such as sodium) into the cell.

To interfere with this process, the ions outside of the neuron would have to shift the normal resting state so that the internal environment of the cell no longer has a net negative charge.

This will prevent the influx of cations that will cause depolarization. In order to do this, we would need to balance out the negative charge inside the cell with negative charge outside of the cell. In the list of options, chloride is the only negatively-charged ion. Therefore, the answer would be Chloride.

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Hydraulic conductivity, also known as permeability, is a property of porous materials that describes their ability to transmit fluid (typically water) through them. The hydraulic conductivity (K) for the given parameters is approximately 0.1667 m/s.

It represents the ease with which water can flow through a saturated medium under a hydraulic gradient. Hydraulic conductivity is influenced by various factors such as the properties of the porous medium (e.g., particle size, shape, and arrangement), the fluid viscosity, and the pressure gradient. It is commonly expressed in units of velocity, such as meters per second (m/s) or centimeters per second (cm/s).

To calculate the hydraulic conductivity (K) using the given parameters, let's substitute the values into the equation:

\(K = (0.4 * 10^{-3}) / ((\pi * (0.085 / 2)^2) * (0.12 / 0.18))\)

First, we can simplify the expression inside the parentheses:

\(K = (0.4 * 10^{-3}) / ((\pi * (0.0425)^2) * (0.12 / 0.18))\\K = (0.4 * 10^{-3}) / ((\pi * 0.0018025) * (0.12 / 0.18))\\K = (0.4 * 10^{-3}) / (0.0035962 * 0.6667)\\K = (0.4 * 10^{-3}) / 0.0023975\\\\K = 0.1667 m/s\)

Therefore, the hydraulic conductivity (K) for the given parameters is approximately 0.1667 m/s.

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Explanation:

compound is already together use your brain man you take multiple things. to make lemonade aka a mixture of powder and water cmon man u gotta think about it logically

think about like this a bartebder asjs you what drink your having what is he going to do next ? hes going to make the drink so you can have another right? yha

observe what happens next

the bartender grabs a cup and goes to the ice and scoops it up he takes a bottle of vodka and puts it into the shot cup "a preset cup for alcohol measurement " he takes stawberry puraee (strawberry mix) and pyrs it into the drink and mixes it around by shaking it . puts a extractor on top of it and takes a glass and pours the drink in front of you into the glass. you dont see the vodka in there do you ? no you dont because its mixed in there same thing with lemonade.

Answer:

65 g/100 mL of water

Explanation:

Answer:

65g/100ml of water.

Explanation:

Edge 2021.

Answer:

Approximately \(1.10\; {\rm V}\) under standard conditions.

Explanation:

Equation for the overall reaction:

\({\rm CuCl_{2}}\, (aq) + {\rm Zn}\, (s) \to {\rm ZnCl_{2}} \, (aq) + {\rm Cu}\, (s)\).

Write down the ionic equation for this reaction:

\(\begin{aligned}& {\rm Cu^{2+}}\, (aq) + 2\; {\rm Cl^{-}}\, (aq) + {\rm Zn}\, (s)\\ & \to {\rm Zn^{2+}} \, (aq) + 2\; {\rm Cl^{-}}\, (aq) + {\rm Cu}\, (s)\end{aligned}\).

The net ionic equation for this reaction would be:

\({\rm Cu^{2+}}\, (aq) + {\rm Zn}\, (s) \to {\rm Zn^{2+}}\, (aq) + {\rm Cu}\, (s)\).

In this reaction:

Look up the standard potentials for each half-reaction on a table of standard reduction potentials.

Notice that \({\rm Zn}\, (s) \to {\rm Zn^{2+}}\, (aq) + 2\, {\rm e^{-}}\) is oxidation and is likely not on the table of standard reduction potentials. However, the reverse reaction, \({\rm Zn^{2+}}\, (aq) + 2\, {\rm e^{-}} \to {\rm Zn}\, (s)\), is reduction and is likely on the table.

The reduction potential of \({\rm Zn}\, (s) \to {\rm Zn^{2+}}\, (aq) + 2\, {\rm e^{-}}\) would be \(-E(\text{anode}) = -(-0.7618\; {\rm V}) = 0.7618\; {\rm V}\), the opposite of the reverse reaction \({\rm Zn^{2+}}\, (aq) + 2\, {\rm e^{-}} \to {\rm Zn}\, (s)\).

The standard potential of the overall reaction would be the sum of the standard potentials of the two half-reactions:

\(\begin{aligned} E^{\circ} &= E^{\circ}(\text{cathode}) + (-E^{\circ}(\text{anode})) \\ &= 0.3419 - (-0.7618\; {\rm V}) \\ &\approx 1.10\; {\rm V}\end{aligned}\).

0.54g is the mass of carbon in  0.045 moles of carbon. Elementary particles shared the same quantity of matter.

A body's mass is an inherent attribute. Until the discoveries of the atom as well as particle physics, it was thought to be tied to the amount of matter inside a physical body. It was discovered that various atoms and elementary particles shared the same quantity of matter.

mole = given mass/ molar mass

substituting all the given values in the above equation, we get

0.045 moles = mass/ 12

mass =0.045×12= 0.54g

Therefore, 0.54g is the mass of carbon in  0.045 moles of carbon.

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The percent concentration of the solution containing 90 grams of NaOH in 750 mL of buffer is 300%.

Mass of NaOH = 90 grams

Molecular weight of NaOH = 40 g/mol

The volume of buffer solution = 750 mL

Converting the volume to litres -

= 750 mL

= 750/1000

= 0.75 L

Calculating the number of moles of NaOH -

= Mass / Molecular weight

= 90  / 40

= 2.25 mol

Calculating the percent concentration -

= (Amount of solute / Total solution volume) x 100

= (2.25 / 0.75 ) x 100

= 3 x 100

= 300

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Answer:

B

Explanation:

Covalent bonding involves the sharing of electrons between two non-metal elements

Answer:

The example of alpha decay.

Explanation:

¹⁷⁵₇₈Pt     →  ¹⁷¹₇₆Os + ⁴₂He

The example of alpha decay.

Properties of alpha radiation:

Alpha radiations are emitted as a result of radioactive decay. The atom emit the alpha particles consist of two proton and two neutrons. Which is also called helium nuclei. When atom undergoes the alpha emission the original atom convert into the atom having mass number less than 4  and atomic number less than 2 as compared to parent atom the starting atom.

Alpha radiations can travel in a short distance.

These radiations can not penetrate into the skin or clothes.

These radiations can be harmful for the human if these are inhaled.

These radiations can be stopped by a piece of paper.

Another example:

₉₂U²³⁸   →   ₉₀Th²³⁴  + ₂He⁴  + energy

Ammonium chloride- NH4CL is the white substance formed when Nh3 and gases meet.

Consequently, a proton transfer from HCl to NH3 in cluster II results in the formation of ammonium chloride (NH4Cl). Considering that cluster II is just the union of two stable HCl-NH3 units, this result is extremely startling.

Ammonium chloride's main use is as an electrolyte in dry cells and as a source of nitrogen for fertilizers. Ammonium chloride is also widely used as a component of galvanizing, tinning, and soldering fluxes to remove oxide coatings from metals and so enhance the solder's adherence.

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I think it's option C and option D but if you can only choose one answer then I think it's option C

Answer:

It is option C

Explanation:

Answer:

Noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og). The noble gases are colourless, odourless, tasteless, nonflammable gases. They traditionally have been labeled Group 0 in the periodic table because for decades after their discovery it was believed that they could not bond to other atoms; that is, that their atoms could not combine with those of other elements to form chemical compounds. Their electronic structures and the finding that some of them do indeed form compounds has led to the more appropriate designation, Group 18.

interactive periodic table

Gravity, as a fundamental force of nature, is influenced by several factors. The following are some of the key factors affecting gravity:

The volume of 12 mmol of hexanol is 14.74 ml.

Hexanol, with a molecular weight of 102.16 g/mol, is a compound commonly used in various applications. To calculate the volume of 12 mmol of hexanol, we can use its molar mass and density.

First, we need to convert the given amount from millimoles (mmol) to moles by dividing it by 1000. So, 12 mmol becomes 0.012 moles.

Next, we can calculate the mass of 0.012 moles of hexanol by multiplying the molar mass (102.16 g/mol) by the number of moles. The result is 1.22592 grams.

To determine the volume, we divide the mass by the density of hexanol. Therefore, 1.22592 grams divided by 0.814 g/ml equals approximately 1.50799 ml.

Rounding to two decimal places, the volume of 12 mmol of hexanol is approximately 14.74 ml.

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The alkene that would give only a ketone with three carbons as a product of oxidative cleavage is propene.

Oxidative cleavage of alkenes involves the breaking of the double bond and the addition of oxygen to form two carbonyl groups. The product formed depends on the position of the double bond and the number of carbon atoms on either side of it.

When propene undergoes oxidative cleavage, it forms a ketone with three carbons, namely acetone, as the only product. This is because propene has a double bond between the second and third carbon atoms, and upon cleavage, it forms two carbonyl groups, one on each end of the double bond, resulting in acetone with three carbons.

In contrast, alkenes with four or more carbon atoms will form a mixture of ketones and aldehydes upon oxidative cleavage.

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Answer:

Explanation:

Na2O has 2 atoms of Sodium and 1 atom of Oxygen

So, the molecular mass of Na2O is:

(2 x Atomic weight of Na) + (1 x Atomic weight of O)

Atomic weight of Na = 22.99 g

Atomic weight of O = 16 g

Therefore, Molecular Mass of Na2O = (2x 22.99g) + (1 x 16g)

= (45.98 + 16)g = 61.98 g

Therefore 61.98 g of Na2O contains 6 x 10^23 molecules (Avogadro's number).

24.6 g of Na2O therefore contains:

(24.6/61.98) x 6 x 10^23 = Answer!

Answer:

It absorbs the sunlight and gets heated instantly because of the mocelcules in a metal object.

Explanation:

Time management is an example of an active coping strategy for stress management.

Active coping strategies are those that involve taking action to address the stressor or its effects.

Time management involves organizing and prioritizing tasks, setting goals, and using time efficiently to reduce stress caused by feeling overwhelmed or having too much to do.

By taking control of one's schedule and managing time effectively, one can reduce stress and increase feelings of control and mastery over the situation.

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I believe gases do not have a definite shape, color, or texture.

A solid has definite volume and shape, a liquid has a definite volume but no definite shape, and a gas has neither a definite volume nor shape

So the answer is a gas

One method that may be used to replace traditional damming is the use of sub-surface dams to prevent the environmental consequences of dams while still harnessing the flowing water.

Therefore, we can confirm that the building of a sub-surface dam would result in less water being lost to evaporation, as well as the ecosystem benefits of not completely stopping the flow of water the way a traditional dam does.

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Answer: 28

Explanation:a=d+a

Answer:

diagram C best represents the mixture

(i) The initial-boundary value problem for the given scenarios are as follows:

a) Scenario a:

PDE: ∂u/∂t = k * ∂²u/∂x²

Initial condition: u(x, 0) = 100 (boiling water temperature)

Boundary conditions: u(0, t) = 10, u(L, t) = 10 (constant temperature at the ends)

b) Scenario b:

PDE: ∂u/∂t = k * ∂²u/∂x²

Initial condition: u(x, 0) = 100 (boiling water temperature)

Boundary conditions: u(0, t) = 0 (temperature at x=0), ∂u/∂x(L, t) = 0 (thermal insulation at x=L)

(iii) The solution for the temperature distribution as time approaches infinity can be found by solving the appropriate steady state equation.

(i) The initial-boundary value problem formulation states the partial differential equation (PDE) governing the temperature distribution in the aluminum bar, along with the initial condition and boundary conditions.

In scenario (a), both ends of the bar are immersed in a medium with a constant temperature of 10 degrees Celsius, while in scenario (b), the end at x=0 is immersed in a medium with temperature 0 degrees Celsius and the end at x=L is insulated.

(ii) As time approaches infinity, the temperature distribution in the bar tends to reach a steady state.

In scenario (a), the temperature throughout the bar will eventually approach a constant value of 10 degrees Celsius, since both ends are immersed in a medium with that temperature.

In scenario (b), the temperature at x=0 will approach 0 degrees Celsius, while the temperature at x=L will remain constant due to thermal insulation.

(iii) To find the solution as time approaches infinity, we need to solve the appropriate steady state equation.

In scenario (a), the steady state equation is ∂²u/∂x² = 0, which implies that the temperature gradient is zero throughout the bar, resulting in a constant temperature of 10 degrees Celsius.

In scenario (b), the steady state equation is ∂²u/∂x² = 0 with the boundary condition u(0) = 0, which implies a linear temperature distribution from 0 degrees Celsius at x=0 to a constant temperature at x=L due to insulation.

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The limiting reactant in (a)  6 Cl2 (b) 10Cl2 (c) 20 Cl2

In the field of chemistry, a limiting reactant can be described as such a reactant molecule, that get consumed faster than the other reactants in a reaction and hence becomes the reason for the reaction to come to a stop.

In the reaction, 2Cr(s) + 3Cl2(g) → 2CrCl3(s), two atoms of Cr and 3 atoms of Cl2 are required for the reaction to occur. Hence, in all the options mentioned, Cl2 becomes the limiting agent as it is consumed in a larger amount in the reaction.

For the reactions to proceed, more Cl2 atoms need to be added.

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Answer:

Explanation:

A chemical formula is the combination of atomic symbols that designate a particular chemical compound, or a substance with two or more different elements.  The formula shows which type and how many of each element makes up that specific compound