what is the stereochemical outcome for a trans alkene in a halogenation reaction?

Answer:

firefly-pea plant-moss

Explanation:

got it from someone else

Answer:

fire , plant, moss

Explanation:

Answer:A

Explanation:

gentle slope

Answer:

\(14.8\ \text{atm}\)

Explanation:

\(C_1\) = Initial concentration = 1.46 g/L

\(C_2\) = Final concentration = 2.7 g/L

\(P_1\) = Initial pressure = 8 atm

\(P_2\) = Final pressure

From Henry's law we have the relation

\(\dfrac{C_2}{C_1}=\dfrac{P_2}{P_1}\\\Rightarrow P_2=\dfrac{C_2}{C_1}P_1\\\Rightarrow P_2=\dfrac{2.7}{1.46}\times 8\\\Rightarrow P_2=14.8\ \text{atm}\)

The pressure of a sample of the same gas at the required concentration is \(14.8\ \text{atm}\).

"Hypotonic solution," refers to a solution with the highest water concentration due to its lower solute concentration compared to the other options, leading to water influx into cells.

A hypotonic solution would be most likely to have the highest water concentration. In a hypotonic solution, the solute concentration is lower than that inside the cell or compared to another solution. As a result, water tends to move into the cell or the solution to equalize the concentration.

When a cell is placed in a hypotonic solution, water molecules will move into the cell through the process of osmosis. This influx of water increases the water concentration inside the cell, leading to cell swelling or even bursting in extreme cases.

Compared to hypertonic and isotonic solutions, a hypotonic solution has a lower solute concentration, allowing for a higher concentration of water molecules. This results in a higher water concentration in the solution. It's important to note that the concept of tonicity is related to the relative solute concentrations between two solutions and their effect on cell osmosis. In this case, a hypotonic solution is characterized by a higher water concentration compared to the other options.

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Answer:

1. Age

2. Time

3. Same Puzzle

Explanation: Independent variable are what changes in the experiment and allow you to get a result. Dependent variables measure what you are trying to find from an experiment. Constants are what remain the same throughout all trials.

Answer:

The more variation in a species, the less likely the chance that species has of surviving. false

Explanation:

Answer:

Atom

Explanation:

atom: The basic unit of matter; the smallest unit of an element, having all the characteristics of that element; consists of negatively-charged electrons and a positively-charged center called a nucleus.

Answer:

Single replacement

Explanation:

Zn replaces the halogen (Cl) from HCl

It is a single replacement reaction

Answer: Try to get answer in Explanation

Explanation: Kr has a greater number of polarizable electrons (36 electrons), so Kr would have a greater degree of LDFs and therefore a greater melting point than N 2 (which has 7 × 2 = 14 polarizable electrons).

The formation of a precipitate is possible when the product of the ionic concentrations exceeds the Ksp value. Qis is the reaction quotient, which is the ionic product (IP) in a solution.

To determine whether a precipitate will occur, the reaction quotient (Qis) must be compared to the solubility product constant (Kip). The correct option is (d) Precipitation will not occur because Qis < Kip. The calculations are provided solution below; Qis = [Pb2+] [I–]2Moles of NaI = 0.587 L × 0.00531 mol/L = 0.00313 mol Moles of Pb(NO3)2 = 0.840 L × 0.00536 mol/L = 0.00451 mol[Pb2+] = 0.00451 mol / (0.587 L + 0.840 L) = 0.00327 M[I–] = 0.00313 mol / (0.587 L + 0.840 L) = 0.00226 MQsp = (0.00327 M) × (0.00226 M)2 = 1.72 × 10–8 Kip = 1.4 × 10–8As Qsp is less than Ksp, a precipitate will not form. Therefore, the correct option is (d) Precipitation will not occur because Qis < Ksp.

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Answer:

electricity

Explanation:

or maybe food

The polystyrene that was made was a white, semi-transparent solid material.

polystyrene had a smooth texture and was lightweight, yet rigid. It was easily cut and shaped into various forms.The glyptal resin was a slightly yellowish, transparent liquid. It had a thick consistency, similar to that of honey or syrup.The properties of glyptal are quite different from those of polystyrene. Glyptal is much more malleable and can be used to form various shapes and forms. It is also much more heat resistant than polystyrene, and is ideal for use in applications which require the material to withstand high temperatures. On the other hand, polystyrene is much lighter and more rigid, making it ideal for creating objects with precise shapes and dimensions.

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Density = Mass/Volume but it can also be rearranged to:

Volume = Mass/Density

Given in the question:

Mass - 318.97 g

Density - 19.3 g/cm3

Calculation

Density = Mass/Volume

= 318.97/19.3

= 16.52 \(cm^{3}\)

Therefore, the volume of the gold is 16.52 \(cm^{3}\)

The products formed are KCH3COO (potassium acetate) and AgNO3 (silver nitrate). Silver nitrate is known to be slightly soluble in water, so it will form a precipitate (solid) when the reaction occurs. Therefore, the correct answer is:
b. Precipitate (solid).

The reaction between KNO3 (potassium nitrate) and AgCH3COO (potassium nitrate) is a double displacement reaction. In a double displacement reaction, the cations and anions of the two compounds switch places to form two new compounds. In this case, the reaction can be written as:
KNO3 (aq) + AgCH3COO (aq) → KCH3COO (aq) + AgNO3 (s)

The products formed are KCH3COO (potassium acetate) and AgNO3 (silver nitrate). Silver nitrate is known to be slightly soluble in water, so it will form a precipitate (solid) when the reaction occurs. Precipitate (solid)
To summarize, the reaction between KNO3 and AgCH3COO results in the formation of a solid precipitate (AgNO3). This is due to the double displacement reaction that takes place, causing the cations and anions to switch places and create new compounds. The observed outcome indicates the formation of a solid product, making option b the accurate response.

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1.98 moles of Magnesium oxide were formed.

The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.

Now write the balanced chemical equation

2Mg + O₂ → 2MgO

(2 × 24)          2 × (24 + 16)

48 g of Mg gives 80 g of MgO

To find the number of moles use the expression

Number of moles = \(\frac{\text{Given mass}}{\text{Molar mass}}\)

                              = \(\frac{80}{40.3}\)

                              = 1.98 mole

Thus from the above conclusion we can say that 1.98 moles of Magnesium oxide were formed.

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The percent yield of the solution is obtained as  94%.

We know that the reaction equation for the problem that we have here can be written as;

Pb(NO3)2(aq) + 2KI(aq) → 2KNO3(aq) + Pbl₂(s)

Number of moles of Pb(NO3)2 = 10.5 g /331 g/mol

= 0.0317 moles

Number of moles of KI =  5.38 g/166 g/mol

= 0.0324 moles

If 1 mole of Pb(NO3)2 reacts with 2 moles of KI

0.0317 moles of Pb(NO3)2 reacts with 0.0317 * 2/1

= 0.0634

Thus KI is the limiting reactant.

Then;

2 moles of KI produces 1 mole of PbI2

0.0324 moles of KI will produce  0.0324 moles * 1 mole/2 moles

= 0.0162 moles of PbI2

Mass of PbI2 produced is;

0.0162 moles  * 461 g/mol

= 7.47 g

Thus percent yield =  7.02 g / 7.47 g * 100/1

= 94%

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Answer:

The correct option is;

D. Manganese (Mn)

Explanation:

Manganese is very brittle, hard, iron like silvery-gray metal, that is difficult to melt. In air, Manganese slowly disintegrate in a similar manner to iron rusting in water

Manganese and iron have similar chemical and physical properties however manganese is more harder and more brittle than iron

A brittle material is one that easily breaks without deforming elastically

Therefore, manganese, due to its very iron like appearance and brittle nature will be suitable to replace the metal wall and crumble easily when the actor hits it.

Answer:

malleable

Explanation:

The image represent in malleable property of metal.

The image possibly represents the photoelectric effect of a metal, which is when it emits electrons after being exposed to electromagnetic radiation. Metals are also characterized by physical properties such as conductivity, malleability, metallic luster, and metallic bonding.

Based on your question, the image possibly represents the photoelectric effect, a key property of metals. This phenomenon occurs when a metal surface exposed to electromagnetic waves of a certain frequency absorbs radiation and emits electrons. These emitted electrons are called photoelectrons. Metals can also exhibit free electron model behavior, where electrons freely roam within the metal structure.

Metals possess unique physical properties like conductivity, malleability, and metallic luster. Malleability refers to the metal's ability to deform without breaking, while conductivity refers to the metal's ability to transfer heat or electricity. A metallic luster gives metals their characteristic shiny appearance.

Finally, metals are also known for their metallic bonding—a unique force that holds together the atoms within a metallic solid. Metallic bonding gives rise to many useful and varied bulk properties of metals.

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Answer:

The two main variables in an experiment are the independent and dependent variable. An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.

Explanation:

Hope this helps...

Answer:

6

Explanation:

Answer : The molecular formula for this compound is C7H14

To determine the molecular formula of the compound, we need to first calculate its empirical formula using the given mass percentages of carbon and hydrogen. The mass percent of carbon in the compound is: (3.140 g / 3.742 g) x 100% = 83.9%

The mass percent of hydrogen in the compound is: (0.602 g / 3.742 g) x 100% = 16.1%. Assuming a 100 g sample of the compound, we can calculate the masses of carbon and hydrogen in the sample: Mass of carbon = 83.9 g and Mass of hydrogen = 16.1 g

Next, we need to convert these masses to moles, using the atomic masses of carbon and hydrogen:1 mol C = 12.01 g, 1 mol H = 1.008 g. Moles of carbon = 83.9 g / 12.01 g/mol = 6.983 mol, Moles of hydrogen = 16.1 g / 1.008 g/mol = 15.95 mol. Dividing each mole value by the smallest mole value, we get the following mole ratio: C:H = 6.983 / 6.983 = 1.000 : 2.285

The empirical formula for the compound is therefore CH2. To determine the molecular formula, we need to find the molecular weight of the empirical formula, and then divide the given molar mass by this value to get the molecular formula multiplier. Molecular weight of CH2 = 12.01 + 2(1.008) = 14.026 g/mol, Molecular formula multiplier = 100.2 g/mol / 14.026 g/mol = 7.146. Multiplying the empirical formula by this multiplier, we get the molecular formula: C7H14

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The frequency of the wave is 1.33 * 10^15 Hz.

We know that a wave has both the magnitude and the direction of the wave. In this case, we can see that the electron is said to have the speed of light and we need to find the frequency of the electron.

From the wave formula;

c = λf

c = speed of light

λ = wavelength

f = frequency

c = 3 * 10^8 m/s

λ = 225 * 10^-9 m

f = ???

f = c/ λ

f =  3 * 10^8 m/s/225 * 10^-9 m

f = 1.33 * 10^15 Hz

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Answer:

c. contraction

Explanation:

Heating will cause substances to expand, or change their state (like solid to liquid) or it may be a chemical reaction.

Among the options provided, the piece of evidence that Alfred Wegener's original theory of continental drift had access to is:

Evidence of ancient tropical swamps in cold regions of North America

Alfred Wegener observed the presence of fossil evidence from ancient tropical plants, such as coal deposits and plant fossils, in regions that are currently cold, indicating that these regions were once located in different climatic zones.

This observation supported his idea of continental drift, suggesting that these continents were once connected and have since drifted apart.

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Day at which one-tenth of the original amount of P-32 remains i.e 10 g, t is 47 days.

The equation of above graph is y = -0.049x + 4.603  (y = mx +b)

Slope, average decay constant, m = -k = -0.049

decay constant, k = 0.049 /day

or it can be calculated by the integrated law equation :

ln [A] = -kt + ln [A]o

t = half life = t0.5

[A]o = 100 g

[A] at half-life = 100 g/2 = 50 g

k = 0.049/day

ln 50 = -0.049t0.5 + ln 100

3.912 = -0.049t0.5 + 4.605

3.912-4.605 = -0.049t0.5

-0.693 = -0.049 t0.5

half-life , t0.5 = -0.693/-0.049 = 14 days

day at which one-tenth of the original amount of P-32 remains i.e 10 g

ln [A] = -kt + ln [A]o

[A]o = 100 g

[A] = 10 g

k = 0.049/day

ln 10 = -0.049t+ ln 100

2.302 = -0.049t + 4.605

2.302-4.605 = -0.049t

-2.303 = -0.049 t

Day at which one tenth of original amount of P-32 is remained i.e 10 g  , t = -2.303/-0.049 = 47  days

The slope of a line is a degree of its steepness. Mathematically, the slope is calculated as "upward push overrun" (trade-in y divided by using trade-in x).A numerical measure of a line's inclination relative to the horizontal. In analytic geometry, the slope of any line, ray, or line phase is the ratio of the vertical to the horizontal distance among any points on it (“slope equals upward push over run”).

The slope formulation is used to calculate the steepness or the incline of a line. The x and y coordinates of the strains are used to calculate the slope of the lines. it is the ratio of the alternatives within the y-axis to the change within the x-axis. The slope of a line is its vertical trade divided by means of its horizontal change, also referred to as upward thrust overrun. if you have 2 factors on a line on a graph the slope is the alternate in y divided by using the change in x.

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The ideal gas law, PV = nRT. Nevertheless, we must first count the moles of neon that are in the cylinder. By dividing the mass of neon by its molar mass,  the temperature of the neon gas is 73.35 °C.

n = m/M = 725 g / 20.2 g/mol = 35.89 mol

we can use the ideal gas law to solve for the temperature:

PV = nRT

225 atm = 225 atm / 1 = 225.0 atm

Substituting the values into the equation and solving for T, we get:

T = PV/nR = (225.0 atm) x (4.5 L) / (35.89 mol x 0.0821 L·atm·mol⁻¹·K⁻¹)

T = 346.5 K

To convert from Kelvin to Celsius, we subtract 273.15:

T = 346.5 K - 273.15 = 73.35 °C

In place of it, we have one atmosphere. Divide the 100 M. L. final volume by the 225 M. L. initial volume of time. Four are present. 0.25 atmospheres is the final pressure.

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Answer:

double replacement is the answer

Since many organic solvents are volatile, vapors will accumulate during mixing and raise the container's internal pressure. In order to release this pressure, it is necessary to frequently vent the mixing container.

As gas particles collide with the wall of their container, a force known as "gas pressure" is generated. Force is used to apply pressure to a region. Gas pressure is the force a gas applies to a certain location. As a result, the gas pressure of a gas is calculated by dividing the total surface area of the container walls by the sum of the forces the gas molecules exert on the walls of their container.

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