Select the solute that is likely most soluble in hexane, C6H14-​

Answer:

Explanation:

The number of atoms that remains after 3 half-lives given that it was originally 300000 atoms is 37500 atoms

Data obtained from the question

Original amount (N₀) = 300000 atoms

Number of half-lives (n) = 3

Amount remaining (N) =?

How to determine the amount remaining

The amount remaining after 3 half-lives can be obtained as illustrated below:

N = N₀ / 2ⁿ

N = 300000 / 2³

N = 300000 / 8

N = 37500 atoms

The following are categorized into polar or nonpolar molecules:

a) Beryllium chloride (BeCl₂) is a nonpolar molecule. The Be-Cl bond is polar due to the electronegativity difference between beryllium and chlorine, but the molecule is linear with the two polar bonds pointing in opposite directions, resulting in a net dipole moment of zero.

b) Hydrogen sulphide (H₂S) is a polar molecule. The H-S bond is polar due to the electronegativity difference between hydrogen and sulfur, and the molecule has a bent shape, resulting in a net dipole moment that is not zero.

c) Sulphur trioxide (SO₃) is a nonpolar molecule. The S-O bonds are polar due to the electronegativity difference between sulfur and oxygen, but the molecule is trigonal planar with the three polar bonds pointing in different directions, resulting in a net dipole moment of zero.

d) Water (H₂O) is a polar molecule. The H-O bond is polar due to the electronegativity difference between hydrogen and oxygen, and the molecule has a bent shape, resulting in a net dipole moment that is not zero.

e) Trichloromethane (CHCl₃) is a polar molecule. The C-Cl bonds are polar due to the electronegativity difference between carbon and chlorine, and the molecule has a tetrahedral shape, resulting in a net dipole moment that is not zero.

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The balanced reaction with correct coefficients for the given chemical reaction is given as,

4Sb + 3O₂ → Sb₄O₆

H₂S + Cl₂ → S + 2HCl

Balanced chemical equations are defined as the equations that have the same number and type of each atom on both sides of the equation. The coefficients in a balanced equation must be in the simplest whole number ratio. In a balanced chemical equation mass is always conserved.

The equation Sb + O₂ → Sb₄O₆ is written after balancing as 4Sb + 3O₂ → Sb₄O₆. Therefore, its coefficients are 4 and 3.

The equation H₂S + Cl₂ → S + HCl is written after balancing as H₂S + Cl₂ → S + 2HCl. Therefore, its coefficient is 2.

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The statement 'when charges pass through the bulb, light is produced' best describes how the charges move through the bulb.

An electrical charge is a type of positive or negative charge of the particles that move in a conductor.

At the atomic level, protons are positively charged particles, electrons are negative, and neutrons do not have a charge.

The electrical charges depend on the charge's initial time, the final time, and the net outward current.

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Answer:

13.45 grams of NaCl will be produced

Explanation:

Given:

Mass of CuCl2 = 15 grams

Molar mass of CuCl2 = 134.5 g/mol

Mass of Na(NO3) = 20grams

Molar mass of Na(NO3) = 85 g/mol

To find:

Amount of Sodium chloride produced = ?

Solution:

No of moles of CuCl2 = 15/134.5 = 0.11 moles

No of moles of Na(NO3) = 20/85 = 0.23 moles,

1CuCl2 + 2Na(NO3) --> 1Cu(NO3)2 + 2NaCl

from the reaction, 1 mole of copper chloride reacts with 2 mole of NaNO3 to produce 2 moles of sodium chloride.

Hence, 0.11 mole of copper chloride will react with 0.23 mole of NaNO3 to produce 0.23 moles of sodium chloride.

Mass of 0.23 moles of NaCl = 0.23 × M.M of NaCl

(Molar mass of NaCl = 58.5)

Mass of 0.23 moles of NaCl = 0.23 × 58.5 = 13.45 grams

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Answer: The answer is incus

20.4 gallons of Isooctane fuel is 117.7786 lb.

1 gallon = 3785 cm3 = 4 quart; 1 pound = 453.6 g.

 So here. 20.4 gallons = 20.4 x 3785 cm³ = 77214 cm³ = 77214 ml

D = m/v  ⇒ mass = density x volume

Given density is 0.6919 g/cm3

Mass = 0.6919 x 77214 = 53424.3666 g

1 g = 1/453.6 lb ⇒ 53424.3666 g =53424.3666 /453.6 lb = 117.7786 lb.

isooctane or iso-octane is also known as 2,2,4-Trimethylpentane,  
being an important component of gasoline, it is  used in relatively large proportions (around 10%) to increase the knock resistance of fuel.
An antiknock agent is a gasoline additive which is  used to reduce engine knocking and also increases fuel's octane rating by raising the temperature and pressure at which auto-ignition occurs.

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Answer:

an unbalanced force

Explanation:

Answer:

See explanation

Explanation:

The formal charge is obtained from;

Formal Charge = Valence electrons on atom - [number of bonds  - lone pair electrons]

The correct structure of ClF2+ is the structure attached to this answer (image obtained from quora) in which the formal charge on fluorine is zero and the formal charge on chlorine is + 1. This is the correct structure because the chlorine is more electronegative than fluorine as expected.

The Lewis structure is a representation that shows electrons' distribution around each of the atoms composing a molecule. In the attached files you will find the Lewis structure for ClF2+.

----------------------

The Lewis structure is a representation that shows electron pairs in bonds between the atoms that compose the molecule. It also shows the solitary electron pairs that remain for each atom.

Structure

Bonds

Electrons

When drawing the Lewis structure of an ion, the entire structure is between square brackets, and the charge is written as an exponent in the upper right corner, outside the brackets.

So let us analyze the exposed example, ClF2+

1) Cl and F have 6 electron pairs and a single one. 7 electrons in total each.

2) Since there are two F and one Cl, then Cl is the central atom and F are the terminal ones.

3) Valence electrons: 7e⁻ F  +  7e⁻ F  +  7e⁻ Cl  = 21 electrons

   Since the ion has a possitive charge, there are 20 electrons.

4) Electron pairs:

Each F needs to form bonds with Cl. Each bond requires two electrons.

Since there are two bonds, four electrons are required.

The 16 remaining electrons must be placed as 8 solitary pairs. Each atom needs a maximum of 8 electrons.

5) The ion is between brackets, and the charge is written as an exponent in the upper right corner.

You will find the image in the attached files.

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The first-order reaction is a chemical reaction in which the rate of the reaction depends on the concentration of only one reactant. The radioactive decay of Mg is an example of a first-order reaction.

To prove that the radioactive decay of Mg is a first-order reaction, we can graph the natural logarithm of the remaining concentration of Mg versus time. The resulting graph should be a straight line with a negative slope, according to the mathematical expression for a first-order reaction.

If we measure the concentration of Mg at different times, we can calculate the remaining concentration of Mg and take its natural logarithm. Then, we can plot these values against time. If the resulting graph is a straight line with a negative slope, this indicates that the reaction is first-order.

Experimentally, we can measure the radioactivity of Mg at different times and calculate the concentration of Mg. Then, we can plot the natural logarithm of the remaining concentration of Mg versus time. If the resulting graph is a straight line with a negative slope, this confirms that the radioactive decay of Mg is a first-order reaction.

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The heat of reaction for the reaction 2H₂O₂ → 2H₂O +O₂ is -196 KJ

From the question, we are to calculate the heat of reaction for the reaction

2H₂O₂ → 2H₂O +O₂               ∆H=?

Using Hess's law

Hess's Law of constant heat summation states that regardless of the multiple stages or steps of a reaction, the total enthalpy change for the reaction is the sum of all changes

From the given equations,

2H₂ +O₂ → 2H₂O                   ∆H= -572 KJ ---------- (1)

2H₂O₂ → 2H₂ + 2O₂              ∆H= 376 KJ ----------- (2)

Adding equations (1) and (2), we get

2H₂O₂ → 2H₂O +O₂               ∆H= -572 KJ + 376 KJ

2H₂O₂ → 2H₂O +O₂               ∆H= -196 KJ

Hence, the heat of reaction for the reaction 2H₂O₂ → 2H₂O +O₂ is -196 KJ.

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The balloon contains 22.4 liters of N2 gas.

Several gas assumptions made by the ideal gas law aren't always true.  Explanation: For instance, the ideal gas law makes the assumption that gas particles don't have any volume and aren't drawn to one another. The gas law notion is constrained for the following reason.

We must first compute the number of moles of N2 before we can calculate the volume of N2 gas in liters. N2 has a molar mass of 28.02 g/mol.

n = mass / molar mass

n = 28.9 g / 28.02 g/mol

n = 1.031 moles

Now, we can use the ideal gas law to calculate the volume of N2 gas:

PV = nRT

V = nRT / P

V = (1.031 moles) x (0.08206 L·atm/K·mol) x (273.15 K) / (1 atm)

V = 22.4 L.

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Answer:

\(m_{water}=1.708g\)

Explanation:

Hello!

In this case, since the total mass of the sample is 2.714 g and the mass of the anhydrous salt is 1.006 g; we infer the mass of water is:

\(m_{water}=2.714g-1.006g\\\\m_{water}=1.708g\)

Moreover, the percentage of water in the hydrate is calculated by dividing the mass of water by the mass of the total hydrate:

\(\% water=\frac{1.708g}{2.714g}*100\% \\\\\% water=62.9\%\)

Best regards!

Answer: 0.27 moles of CO2 and 11.88 grams of CO2

Explanation: Use the Ideal Gas Law, PV = nRT, substitute the values given and solve.

I can't seem to upload procedure but:

P = 1.5atm

V = 4.5L

n = moles

R = 0.0821gr/mol (when using atm, kPa is 8.31)

T = 300K

Isolate what you don't have, in this case n. Change PV = nRT to PV/RT = n. Substitute the values to get moles. Once you have this, multiply the value by the molar mass of CO2 (44gr/mol) to get the mass of CO2 in grams.

Answer:

I believe the correct answer is cold surfaces.

Explanation:

Answer:

C

Explanation:

Answer:

1. The second option

Explanation:

ANSWER : Metallic bonding is a type of chemical bonding that occurs between metal atoms. It involves the sharing of valence electrons between metal atoms, resulting in a sea of electrons that surrounds a lattice of positively charged metal ions.

Two common properties of metals are malleability and conductivity. Malleability refers to the ability of a metal to be shaped into thin sheets without breaking, while conductivity refers to the ability of a metal to conduct electricity and heat.

Metallic bonding produces these properties because the sea of delocalized electrons is free to move throughout the lattice of metal ions. When a force is applied to a metal, the ions in the lattice can slide past each other, facilitated by the movement of these electrons. This ability to move and slide past each other is what gives metals their malleability.

Similarly, the delocalized electrons are able to carry an electric current through the metal lattice. As electrons move through the metal lattice, they collide with the metal ions, transferring energy and producing heat. This transfer of energy is what gives metals their high thermal conductivity. In addition, the delocalized electrons are also able to transfer electrical charge through the metal lattice, resulting in the high electrical conductivity observed in metals.

In summary, metallic bonding produces the properties of malleability and conductivity in metals by creating a sea of delocalized electrons that can move freely throughout the lattice of metal ions, allowing for the movement of ions and the transfer of energy and electrical charge.

Explanation :

there you go home this helps :)

The thickness of the aluminum is approximately 0.00172 cm or 0.0172 mm

To calculate the thickness of the aluminum, we need to use the formula:

Density = Mass / (Length x Width x Thickness)

Given:

Mass of aluminum = 0.475 g

Length of aluminum = 10.08 cm

Width of aluminum = 10.08 cm

We need to rearrange the formula to solve for thickness:

Thickness = Mass / (Length x Width x Density)

The density of aluminum is approximately 2.7 g/cm³.

Now we can substitute the given values into the formula:

Thickness = 0.475 g / (10.08 cm x 10.08 cm x 2.7 g/cm³)

Thickness ≈ 0.475 g / (102.4064 cm² x 2.7 g/cm³)

Thickness ≈ 0.475 g / 275.879104 cm³

Thickness ≈ 0.00172 cm or 0.0172 mm

Therefore, the thickness of the aluminum is approximately 0.00172 cm or 0.0172 mm.

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Answer:

The volume of Component 1 is 36 cubic inches.

Explanation:

To calculate the volume of a composite solid, we need to determine the individual volumes of the different components and then add them together.

In this case, the composite solid consists of multiple components with the following dimensions:

Component 1:

Length: 4 inches

Width: 3 inches

Height: 3 inches

To find the volume of Component 1, we multiply the length, width, and height together:

Volume of Component 1 = Length x Width x Height = 4 in x 3 in x 3 in = 36 cubic inches

Therefore, the volume of Component 1 is 36 cubic inches.

Please provide the dimensions of the remaining components of the composite solid, and I will calculate the total volume by summing up the individual volumes.

Answer:Favorable

Explanation:um I know That it is Favorable sorry!

Answer:

[Ni²⁺] = 1.33 M

Explanation:

To do this, we need to use the Nernst equation which (in standard conditions of temperature)

E = E° - RT/nF lnQ

However R and F are constant, and the reaction is taking place in 25 °C so we can assume the nernst equation like this:

E = E° - 0.05916/n logQ

As the nickel is in the cathode, this means that this element is being reducted while Cadmium is being oxidized, therefore the REDOX reaction would be:

Cd(s) + Ni²⁺(aq) --------> Cd²⁺(aq) + Ni(s)

With this, Q:

Q = [Cd²⁺] / [Ni²⁺]

Now, we need to know the value of the standard reduction potentials, which can be calculated with the semi equations of reduction and oxidation:

Cd(s) ------------> Cd²⁺ + 2e⁻       E°₁ = 0.40 V

Ni²⁺ + 2e⁻ -------------> Ni(s)        E°₂ = -0.25 V

E° = E°₁ + E°₂

E° = 0.40 - 0.25 = 0.15 V

Now that we have all the data, we can solve for the [Ni²⁺]:

0.133 = 0.15 - 0.05916/2 log(5/[Ni²⁺])

0.133 - 0.15 = -0.05916/2 log(5/[Ni²⁺])

-0.017 = -0.02958 log(5/[Ni²⁺])

-0.017/-0.02958 = log(5/[Ni²⁺])

0.5747 = log(5/[Ni²⁺])

10^(0.5747) = 5/[Ni²⁺]

[Ni²⁺] = 5/3.7558

Explanation

HBr (g) decomposes as follows:

HBr (g) => H2 (g) + Br2 (l)

----

Lastly, the equation must be balanced:

2 HBr (g) => H2 (g) + Br2 (l)

(we must have the same number of atoms on both sides)

Answer: 2 HBr (g) => H2 (g) + Br2 (l)

a. The theoretical yield of Cu is 950.0 grams.

b. The percent yield is 30.9% (295.8 g/950.0 g x 100 = 30.9%).

This reaction is a single-replacement reaction in which copper (II) sulfate (CuSO4) is replaced by zinc (Zn). Copper (II) sulfate reacts with zinc metal to produce zinc sulfate (ZnSO4) and copper (Cu). The theoretical yield of copper (Cu) in this reaction is 950.0 grams. This is calculated by multiplying the moles of copper (II) sulfate (1.14 mol) by the molar mass of copper (63.55 g/mol), resulting in 950.0 g of copper (Cu).

However, the actual yield of copper (Cu) obtained from this reaction is 295.8 grams. This difference is accounted for by the fact that in a real-life reaction, not all reactants are converted to products due to the presence of side products or incomplete reaction. The percent yield of copper (Cu) is calculated by dividing the actual yield (295.8 g) by the theoretical yield (950.0 g) and multiplying by 100, resulting in a percent yield of 30.9%.

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Answer:

The chemical reaction identified is:

2Al + 3CuCl2 → 2AlCl3 + 3Cu

In this reaction, aluminum (Al) reacts with copper chloride (CuCl2) to form aluminum chloride (AlCl3) and copper (Cu). The coefficients in front of the chemical formulas indicate the stoichiometric ratio of the reactants and products, which means that two moles of Al react with three moles of CuCl2 to produce two moles of AlCl3 and three moles of Cu.

Answer:

proteins in hair

Explanation:

proteins are polymers of amino acids. so if proteins are polymers of amino acids it means that proteins in hair are made of polymers

Answer:

The corrects answers would be DNA, the proteins in hair, and rubber car tires. A, D, and E.

Explanation:

DNA is made of nucleotides. The proteins that make up hair are made of amino acids. Rubber car tires are made from the polymerization of a variety of monomers, which includes isoprene. All of these are example of polymers.

The option that will have the greatest effect on the ability of soil to hold water is the size of the soil particles (option B).

Soil water holding capacity is the amount of water that a given soil can hold for crop use. It is measured as the total quantity of water that can be absorbed by the soil per gram.

This characteristic is closely connected to the affinity that soil molecules have for water and other solutes in the environment.

The different soil types we have possess different water holding capacities. However, the size of each particle is a major determinant of this characteristics.

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Answer:

Explanation: all the answer for the question is that link

The new volume of the balloon after heating it to a temperature of 51 °C is approximately 2.39 L.

Charles's law states that "the volume occupied by a definite quantity of gas is directly proportional to its absolute temperature.

It is expressed as;

\(\frac{V_1}{T_1} =\frac{V_2}{T_2}\)

Given that:

Substituting the given values and solve for V₂:

\(V_1T_2 = V_2T_1\\\\V_2 = \frac{V_1T_2}{T_1} \\\\V_2 = \frac{2.2\ *\ 324.15}{298.15 }\\ \\V_2 = 2.39 \ L\)

Therefore, the final volume is 2.39 litres.

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