A chemist runs the following decomposition reaction: C2H6 → 2 C + 3 H2
If she starts with 50.0 g of C2H6, how many grams of carbon will be made?

Answer:

One mitigating strategy for planning and zoning is to protect people and the environment from the nuisance impacts of facilities like landfills, sewage treatment plants and factories through land use planning tools. I learned that people need to Reduce greenhouse gas emissions through their food choices to mitigate the effects of using Renewable energy.

The aqueous solution here would freeze at -9.163 degree celsius.

The temperature at which it boils is 375.60 K. This gets converted into Celsius = 102.45-degree Celsius (i)

The standard temperature of boiling is = 100 degree Celsius (ii)

The standard temperature of freezing is = 0 degrees celsius (iii)

We know the formula -  

Depression in cooling/ Elevation in boiling = [tex]K_{b}[/tex] / [tex]K_{f}[/tex] (iv)

The standard values for both Ks are 0.5 and 1.87 respectively. (v)

Using the given values of (i), (ii), (iii), (iv), and (v), we find that -

= (102.45 - 100.00) / (0 - x) = 0.5 / 1.87

x, here is the temperature for freezing.

= Temperature at which it freezes = - 9.163 degree Celsius.

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The compound that is covalent is the compound A.

We know that the forces that holds the molecules of an ionic substance together is so strong that the ionic substances are known to have a high melting and a high boiling point. Thus, it is already clear that the compounds B and C are both ionic because they are highly conducting and they also have a high melting and boiling point.

The compound A has a low melting and boiling point and also does not conduct electricity. This goes to tell us that A is a covalent compound.

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Answer:

compound A

Explanation:

edge 2023

The empirical formula of a compound containing c, h, and o is C₂H₆O₁.

In chemistry, the empirical formula represents the simple whole-number ratio of the atoms which are present in the compound. The initial step is to calculate and determine the masses. The next step which follows is to calculate the number of moles by dividing the grams by the atomic mass. Next, the number of moles is divided by each element by the smallest number of moles. Finally, we convert numbers to whole numbers since we don't represent empirical formulas in decimals.

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7.133 is the rate constant increase if the temperature is raised to 37c.

factor=rate(T2)/rate(T1) .

The proportionality constant (k) that links the pace of the reaction to the concentrations of reactants is known as the specific rate constant. For any chemical reaction, the rate law and the particular rate constant must be ascertained through experimentation. Temperature affects the rate constant's value.a chemical reaction in which two or more substances interact and change into new ones, or where one substance transforms into another.

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cyclohexanone is the compound which is shown.

what is cyclohexanone-

The chemical substance known as cyclohexanone has the formula (CH2)5CO. The compound is a six-carbon cyclic molecule with a functional group called a ketone.

IUPAC (International Union of Pure and Applied Chemistry) nomenclature is based on the naming of a molecule's longest chain of carbons connected by single bonds, whether in a continuous chain or in a ring.

six-carbon ring with oxygen bonded to one of the carbon atoms in the ring is cyclohexanone.

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False. As the reaction proceeds toward equilibrium, the concentrations of [tex]H_2[/tex] and [tex]I_2[/tex] gradually decrease, while the concentration of HI gradually increases.

In a chemical reaction, an equilibrium is reached when a reaction that proceeds in both ways has both forward and backward reactions at an equal rate.

For example, consider the reaction below:

A + B <---> C + D

At equilibrium, the rate of formation of A and B will be equal to the rate of formation of C and D.

Now, let us apply this to the reaction:

[tex]H_2 + I_2 < --- > 2HI[/tex]

Since the reactants are  [tex]H_2[/tex] and [tex]I_2[/tex], initially, their concentrations will decrease while the concentration of the product, HI will increase. This will continue until the reaction reaches an equilibrium.

Thus, that the concentrations of  [tex]H_2[/tex] and [tex]I_2[/tex] will gradually increase while the concentration of HI will gradually decrease as the reaction approaches an equilibrium is false.

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Here are 3 alkali metals with physical and chemical similarity.

What is alkali metals?

Alkali metals are come from the fact that when these metals or their oxides dissolved in water.a basic solution results.

Three alkali metals -

1- hydrogen(H)

2-lithium(Li)

3-potassium(K)

physical and chemical similarity of hydrogen -

-it is colourless and tasteless in nature.

-it is a combustible gas but not a supporter of combustion.

physical and chemical similarity of lithium -

-it have a melting point of 180.54

-it is the lightest of all metals,with a density approximately half that of water.

physical and chemical similarity of pottasium -

- this metal is soft and white with a silver lustre.

-it imparts a lavender colour to a flame, and it's vapour is green.

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38.1 ml of a 12% (v/v) propyl alcohol solution would need 4.5 ml of propyl alcohol.

What purpose does the isopropyl alcohol solution serve?

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The amount of Si needed to react with an excess of nitrogen gas to prepare 125g of silicon nitride if the percent yield of the reaction is 95% is 88.20 g.

We know that,

Percentage (%) yield = ( actual yield /theoretical yield ) × 100

Using this we can derive that,

Theoretical yield = (Actual yield / Percentage(%) yield) × 100

= (125 / 85) × 100 = 147.06g Si₃N₄

The mole ratio of Si: Si₃N₄ = 3 :1

Grams of Si required to produce 147.06 g  Si₃N₄,

= ( 3 mole Si /1 mol Si₃N₄) ( 28.05 g Si /1 mole Si) * (1 mole Si₃N₄, /140.3 g Si₃N₄,) *147.06 g Si₃N₄

=  88.20 g Si

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According to the given statement Object B, by 1 gram per cubic centimeter object has a greater density.

The measure of how densely a substance is pressed together is called density. As the weight per unit volume, it meets that definition. The formula for density, denoted by the symbol D, is given as follows: density = m/V, where m denotes the object's mass and V its volume.

Mass and volume are intimately linked with density. In reality, it explains the precise nature of the connection between the two. By dividing the mass of an object by its volume, we may get its densities. The mass is said to have a low population density if it has a high volume but a tiny mass.

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The impedance of an AC circuit with 10 ohm resistor, 12 ohm inductive reactance and 7 ohm capacitive reactance is 11.2 ohm.

What is impedance?

Impedance is the resistance of a circuit to AC which is caused by the combining effects of ohmic resistance and reactance. It is represented by the symbol Z and its unit is ohm. It is a measure of opposition to electric flow.

The impedance of an AC circuit can be calculated by,

Z = [(R^2) + (XL - XC)^2]^1/2

where R = resistance, XL = inductive reactance, XC = capacitive reactance

Z = [(10^2) + (12 - 7)^2]^1/2 = (100 + 25)^1/2 = 11.2 ohm.

Therefore, the impedance of an AC circuit with 10 Ohm resistor, 12 ohm inductive reactance and 7 ohm capacitive reactance is 11.2 ohm.

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The volume required is 4.86 ml that would be required to react completely with 11.73 ml of 1.006 m ca(oh)2.

This can be calculated using:

3Ca(OH)2 (aq) + 2H3PO4 (aq) ---> Ca3(PO4)2 (s) + 6H2O (l)

moles of Ca(OH)2 present: 11.00 moles

moles of H3PO4 needed: 7.33 moles

volume (mls) of H3PO4 needed: 7.33/1.508 = 4.86

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Answer:

Fluorine does not form an ion with a charge of 1+.

The pressure, in atm, if the sample of helium is compressed to 125 ml is 2.32 atm

An ideal gas is a theoretical gas composed of many randomly transferring factor particles that aren't difficult to interparticle interactions. the best gasoline idea is beneficial because it obeys the precise gas law, a simplified equation of country, and is amenable to evaluation under statistical mechanics.

Volume is a degree of occupied three-dimensional space. it's far more frequently quantified numerically the usage of SI-derived gadgets or by way of diverse imperial gadgets. The definition of length is interrelated with the extent.

Using the ideal gas equation:-

At constant temperature

Given;

P₁ = 0.9 atm

V₁ = 322 ml = 0.322 L

P₂ = ?

V₂ = 125 ml = 0.125 L

P₁V₁ =P₂V₂

P₂ = P₁V₁ /V₂

    = 0.9 × 0.322 /0.125

    = 2.32 atm

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Answer:

Explanation:

Ionic bonds form between two or more atoms by the transfer of one or more electrons between atoms. Electron transfer produces negative ions called anions and positive ions called cations. These ions attract each other.

Explanation: An ionic bond is formed because sodium is a part of the Alkali metals and Oxygen is a non-metal and a gas. 4Na + O2 → 2Na2O (s) OR Na + O2 → NaO2 (s).

Answer:

Explanation:

Ionic bonds form between two or more atoms by the transfer of one or more electrons between atoms. Electron transfer produces negative ions called anions and positive ions called cations. These ions attract each other.

The mass of silver deposited in the electrode when a current of 3 ampere passes in 50 minutes is 6.71 g.

Electrolysis is the process of passing current through an electrolyte solution and results in the redox process where the reduced metal is deposited in the cathode.

The mass deposited w of a metal in electrolysis is can be calculated using the equation w = zit where, the z is the equivalent mass and t be the time I is the current passed.

The equivalent mass of Ag is 108 g. for one ampere the charge q will be 96500 C. Now,

w = 108 × 3 × ( 50 × 60 seconds) /96500 = 6.71 g.

Hence, the mass of silver deposited is 6.71 g.

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The wavelengths of light that can break the Cl-Cl bond and the bond in O₂ will be λ = 3.53 × 10⁻⁷ m and λ =2.4 × 10⁻⁷ m respectively.

Cl-Cl- Bond energy (E)= 339 KJ/mol

O=O Bond energy (E)= 498 KJ/mol

h = 6.626 × 10⁻³⁴ J.s

c = 3 × 10⁸ m/s

N = 6.02214076 × 10²³

For Cl-Cl bond

  We will use the following formulae

     λ = Nhc/E (for one mol photons)

  Put the values

λ = [(6.02214076 × 10²³ p/mol)(6.626 × 10⁻³⁴ J.s)(3 × 10⁸ m/s) / (339 × 10³ J/mol)] × 1 nm / 10⁻⁹ m

    λ = 353 nm

    λ = 3.53 × 10⁻⁷ m

For O=O bond

  We will use the following formulae

     λ = Nhc/E (for one mol photons)

  Put the values

λ = [(6.02214076 × 10²³ p/mol)(6.626 × 10⁻³⁴ J.s)(3 × 10⁸ m/s) / (498 × 10³ J/mol)] × 1 nm / 10⁻⁹ m

    λ = 240 nm

    λ = 2.40 × 10⁻⁷ m

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A  time when you experienced microaggression was when i wnet to college in another state. The lecturer in one of my course was very angry that i left my tribe, my state to another state to study. There was element of mockery in his voice.

I felt sad, angry and also bad at the same time. I just wanted to run away from the class because all eyes were on me.

Microaggressions relate to ionization energy through the power they command or hold. I can explain Microaggressions  as ionization energy to someone  as having the power to aggressively give out a part of you that can be good or bad.

Ionization energies gauge an atom's propensity to resist losing electrons. For instance, removing an electron from a neutral fluorine atom to create a positively charged ion requires a significant amount of energy.

Note that Microaggressions are everyday verbal, behavioral, or environmental slights that signal hostility, denigration, or negative views toward stigmatized or culturally marginalized groups. They can be deliberate or inadvertent. Chester M., a psychiatrist at Harvard University, originated the phrase.

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Lowering the flame can result in the tip overheating.

An overheating plasma system will wear out torch parts quickly and eventually may burn out the torch and leads.

What is an oxy-acetylene torch set?

A gas torch that burns a mixture of acetylene and oxygen to produce a high-temperature flame (3,000°C or 5,400°F) that can weld or cut metal.

Can an oxy-acetylene torch explode?

Thus, lowering the flame's size may result in the tip overheating.

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The type of reaction which occurs when the oxidation numbers of 2 or more atoms change is an oxidation-reduction{redox} reaction.

A redox (redox) reaction is a type of chemical reaction in which electrons are transferred between two species redox reaction is a chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.

There  are 2 classes of redox reactions  which are:

electron transfer where electrons flow from the reducing agent  to the oxidant

atom transfer atom transfers an atom from one substrate to another

There are different types of redox reactions which are:

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The evidence in the question shows that there is a directional evolution that is taking place as the percentage of the tall individuals is increasing.

We know that the term natural selection implies that the organisms that are are better able to live and survive in a habitat are the ones that are able to live longer and reproduce and by so doing, they are able to transfer the favorable traits that they posses to their offspring.

Now we can also relate to the fact that the idea of directional selection is takin place when there is a situation in which the trend in the evolution seems to favor only one type of trait over another the other type of trait and this leads to a gradual increase in the abundance of the favored trait in the population.

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In the polysaccharide amylose,a large number of monosaccharides are linked together through alpha 1-4 glycosidic linkages.

Alpha 1-4 linkage is a stored form of sugar in plant. In this carbon atom 1 and 4 of the the two monomers forms a glycosidic bond. Polysaccharides are long chain forms of monosaccharides linked together by glycosidic bonds.A glycosidic bond is a covalent bond that joins a carbohydrate molecule to another group.this bond gives glycogen that is suitable for energy storage.

Amylose is plant starch made from monosaccharide connected through alpha 1-4 linkages.monosaccharides are the simplest form of sugar.from monosaccharides, all carbohydrates are built.

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The compound  [tex]CCl_{4}[/tex] contains polar covalent bonds having partial negative charges on the Cl atoms.

So, the correct option is B.

The four polar covalent bonds between carbon and chlorine in carbon tetrachloride ( [tex]CCl_{4}[/tex]) give it its name as a covalent compound. Due to the variation in atoms' values of electronegativity, the bonds in this compound are polar. The molecule is asymmetrical, which means that the opposing opposite forces balance each other out, and as a result, the molecule is not polar.

The four bonds have symmetry and are spread out in four different directions. In each order, the dipole moments are thus canceled out. Tetrachlorocarbon is a non-polar molecule as a result. Although the electronegativities of C and Cl are different, the carbon tetrachloride molecule has no dipole moment.

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Answer:

45 mins

Explanation:

it takes 45 minutes long

A man is sitting on a chair and exerting 100 N of force downward, while a spring beneath the chair exerts 150 N of force upward. The net force acting on the system is in the upward direction with a magnitude of 50N.

Force is the product of mass and acceleration which is dependent on the rate of change of momentum.

According to the given question,

Magnitude of force in the downward direction = 100N

Downward force = 100N

Magnitude of force in the upward direction = 150N

Upward force = -150N

Net force on the system = Upward force + Downward force

Net force on the system = -150N + 100N

Net force on the system = -50N

Hence, the net force acting on the system is in the upward direction with a magnitude of 50N.

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Answer: 50N

Explanation:

⁹⁴Pu₂₄₄-------> ⁹⁵Am₂₄₃ + electron is a nuclear equation for plutonium emitting gamma radiation

Alpha particles plutonium is created in an activator when uranium atoms absorb neutrons. Nearly all plutonium is man-made. Plutonium mainly emits alpha particle is a type of radiation that is easily ceased and has a short range. It also emits neutrons, beta particles, and gamma rays. It also emits neutrons, beta particles, and gamma rays.

It is contemplated toxic, in part, because if it were to be inhaled it could deposit in the lungs and finally cause damage. There are five common isotopes of plutonium because it emits alpha particles, plutonium is most menacing when inhaled.

So we can conclude that Plutonium isotopes emit alpha rays except for plutonium-241 for which the energy of beta electrons is curiously low.

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Answer:

Magnesium + hydrochloric acid → magnesium chloride + hydrogen

why? because the product of a neutralization reaction are always a salt and water. This reaction is the only one which does not have water as a product, so it is not neutralization.

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The pH of the solution is 13.16.

We know that the pH has to do with the concertation of  the hydrogen ions that we have in the solution. We have to first obtain the concentration of the hydroxide ions and then use that to obtain the pH of the solution accordingly.

Number of moles of NaOH = 5.80 g/40 g/mol = 0.145 moles

Concentration of the solution =  0.145 moles/1 L =  0.145 M

pOH = - log( 0.145 M)

= 0.84

pH = 14 - 0.84

= 13.16

We can get the pH of the solution as 13.16.

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