Unlike soap, which is ionic, some liquid laundry detergents are neutral molecules. Explain how each of the following molecules behaves like soap and cleans away dirt.

Answer:

4.4 moles of water

Explanation:

Propane is C3H8. Is the chemical equation, you wrote C2H8 which is wrong. Type everything properly and give a check before finally posting the question.

The chemical equation that is given, is not properly balanced. The BALANCED equation would be

C3H8 + 5O2 → 3CO2 + 4H2O

From this balanced chemical equation, we see that 5 moles of oxygen produce 4 moles of water.

5 moles of Oxygen → 4 moles of water

1mole of oxygen → \(\frac{4}{5}\) moles of water

5.5 moles of oxygen → (\(\frac{4}{5}\) × 5.5) moles of water = 4.4 moles of water

∴ The reaction of 5.5 mol of O2 will produce 4.4 mol of H2O. [Answer:]

Answer:

5.5

Explanation:

First, you will need to balance the equation ( the equation in your question is not balanced....typo?)

C2 H8    + 4 O2   ===> 2 CO2   + 4 H2O

Now, from the balanced equation:

O2 : H2O =  4/4 = 1/1

SO   5.5 MOLES  OF  O2  PRODUCES 5.5 MOLES  H20  

Answer:

It is disproved that atoms are indivisible.  Which is answer choice B.

Explanation:

I got it right on Edge. :)

We have that this means that It disproved that atoms are indivisible

Option C

From the question we are told

Which of Dalton's ideas about the atom did J.J. Thomson's experiment disprove?

Generally

Dalton defined an atom as the smallest particle of an element

This was disapproved of by J.J. Thomson's experiment

Therefore

This means that It disproved that atoms are indivisible

Option C

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This is a stoichiometry question, and will be answered in two steps, but the first thing for every stoichiometry question is to have the reaction properly balanced, which the question already provided us:

S8 + 8 O2 -> 8 SO2

First step is to find the limiting and excess reactant, this will tell us which element is in excess and by how much, let's gather the data for the reactants first:

30.14 grams of S8, molar mass of S8 is 256.5g/mol

287.43 grams of O2, molar mass of O2 is 32g/mol

Now we will focus on S8, and see how many moles we have of it in this reaction:

256.5 g = 1 mol

30.14 g = x moles

x = 0.12 moles of S8 in this reaction

According to the molar ratio, 1:8, we need 1 mol of S8 and 8 moles of O2 in order to have the reaction to proceed

1 S8 = 8 O2

0.12 S8 = x O2

x = 0.96 moles of O2 if we have 0.12 moles of S8

We only need 0.96, if we have more than that, is excess, if we have less than that, this means that O2 is the limiting and S8 is in excess, so let's check how much of O2 we do have

32g = 1 mol

287.43 g = x moles

x = 8.98 moles of O2, we have a big excess of O2, we only need 0.96 moles and we have almost 9 times more

Now that we know which element is the limiting, we can use this information to find the theoretical yield of SO2

The molar ratio will also be 1:8, and since we have 0.12 moles of S8, we will have 8 times that, which is 0.96 moles of SO2, using its molar mass, 64.1g/mol, we will have the theoretical yield

64.1g = 1 mol

x grams = 0.96

x = 61.5 grams is the theoretical yield

55.59 grams is the actual yield

Now we use these two values in the percent yield formula:

%yield = actual yield/theoretical yield

%yield = 55.59/61.5

%yield = 0.90

Limiting reactant = S8

Excess reactant = O2

Percent yield = 90%

Sulfide ion (S+) with +1 charge has the same electron configuration as neutral phosphorus in its ground state. With the chemical formula S, Sulphur dioxide is an inorganic anion of Sulphur.

Following is the neutral phosphorus ground state electron configuration at atomic number 15.

phosphorus-15: 1s, 2s, 2p, 6, 3s, 2p

The electronic configuration of sulphur, which has atomic number 16, is once more as follows.

S-16: 1s, 2s, 2p, 6, 3s, 2p, 4.

From the aforementioned electronic configuration, we can infer that sulphur has one more electron in its valence shell than does phosphorus.

Sulphur must therefore release one electron from its valence shell, converting it from S -1e——>S+, to achieve the same electron configuration as phosphorus, which has 15 electrons.

Similar to this, the sulfuric acid ion, S2- - 3e—->S+

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Size of an atom increases as we move down a group and from left to right across a period

Define an atom?

An atom is a unit of matter that specifically characterizes a chemical element. One or more negatively charged electrons surround the core nucleus of an atom, which is made up of all of them. One or more protons and neutrons, which are comparatively heavy particles, can be found in the positively charged nucleus.

In a group, as the atomic number rises, the atomic size expands from top to bottom. Valence electrons are located farther from the nucleus because there are more filled energy levels, which increases atomic size.

Atomic size grows as a function of period number, number of shells, and so forth. Since there are more electrons in each shell as we move from left to right in a period, the force of attraction between the nucleus and electrons, which have positive charges, is stronger, bringing the shells closer to the nucleus and shrinking the size of the atom.

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Answer:

CH4 + O2 = CO2 + H2O.

Answer:

CH4 + O2 = CO2 + H2O.

Explanation:

The amount represented by 25.0 g of oxalic acid (H₂C₂O₄) is approximately 0.201 mol. The number of molecules of oxalic acid in 25.0 g is approximately 1.21 × 10²³ molecules. The number of atoms of carbon in 25.0 g of oxalic acid is approximately 1.21 × 10²³ atoms.

1. To calculate the amount represented by 25.0 g of oxalic acid, we need to convert grams to moles. The molar mass of oxalic acid (H₂C₂O₄) is calculated as follows:

H: 1.01 g/mol × 2 = 2.02 g/mol

C: 12.01 g/mol × 2 = 24.02 g/mol

O: 16.00 g/mol × 4 = 64.00 g/mol

Total molar mass = 2.02 g/mol + 24.02 g/mol + 64.00 g/mol = 90.04 g/mol

Using the molar mass, we can calculate the amount in moles:

Amount (in moles) = mass / molar mass

Amount = 25.0 g / 90.04 g/mol ≈ 0.201 mol

2. To determine the number of molecules in 25.0 g of oxalic acid, we use Avogadro's number (6.022 × 10²³ molecules/mol):

Number of molecules = Amount (in moles) × Avogadro's number

Number of molecules = 0.201 mol × 6.022 × 10²³ molecules/mol ≈ 1.21 × 10²³ molecules

3. To find the number of atoms of carbon in 25.0 g of oxalic acid, we need to consider the molecular formula. In one molecule of oxalic acid, there are 2 carbon atoms (C₂). Therefore, the number of atoms of carbon is the same as the number of molecules:

Number of atoms of carbon = 1.21 × 10²³ atoms

In summary, 25.0 g of oxalic acid represents approximately 0.201 mol, contains approximately 1.21 × 10²³ molecules, and has approximately 1.21 × 10²³ atoms of carbon.

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Answer:

Oxygen has a molar mass of 16.0 g mol−1 , so 1 mole of oxygen atoms has a mass of 16.0 g . Therefore, carbon dioxide has a percent composition of 72.7% oxygen, i.e. for every 100 g of carbon dioxide you get 72.7 g of oxygen

Explanation:

The correct answer is A. fossil materials. The Mg/Ca ratio in fossil materials, such as shells or skeletons of marine organisms, can provide insights into the chemical composition of seawater in the past.

By analyzing the Mg/Ca ratio in these fossils, scientists can infer whether the seawater at the time favored the precipitation of aragonite or calcite minerals.

Aragonite and calcite are two different forms of calcium carbonate minerals, and their formation is influenced by the chemical composition of seawater. In an aragonite-calcite sea, the relative abundance of aragonite and calcite minerals in the fossil record can indicate the prevailing chemical conditions in the ancient oceans.

On the other hand, ancient salt crystals (option B) and fluid inclusions in ancient salt crystals (option C) are not directly related to the Mg/Ca ratio or the aragonite-calcite sea concept. Modern seawater (option D) may provide some insights into the current chemical composition but does not directly inform us about past geological changes in seawater chemistry.

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The constituents of an aqueous solution that can transmit charge in a current are: chloride ions, sodium ions, hydroxide ions, and acetate ions.

In an aqueous solution, ions are responsible for transmitting charge in a current. When certain substances dissolve in water, they dissociate into ions, which are electrically charged particles. These ions can move freely in the solution and facilitate the flow of electric current.

Common ions found in aqueous solutions include:

Cations: Positively charged ions. Examples include hydrogen ions (H+), sodium ions (Na+), potassium ions (K+), calcium ions (Ca2+), and magnesium ions (Mg2+).

Anions: Negatively charged ions. Examples include hydroxide ions (OH-), chloride ions (Cl-), sulfate ions (SO42-), nitrate ions (NO3-), and carbonate ions (CO32-).

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The substance in the diagram that would have a net movement out of the cell is Water.

The substance that will have to have a net movement out of the cell would need to first be in the cell. The only substances in the cell are water, starch, and glucose.

Water will be the most likely substance to have a net movement out of the cell thanks to the process of osmosis which allows water molecules to move from an area of high concentration to an area of low concentration across a semi - permeable membrane. This happens until the concentration gradient is the same across the semi - permeable membrane.

The water in the cell is 90 % which means it is 5 % more than the 85 % water in the beaker. Water would therefore move out of the cell in a net movement until the concentration is the same in the beaker and the cell.

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Answer: crystal lattice

Explanation:

Answer:

A and the next question is c

Explanation:

Edge 2020

Answer:

Mg(OH)₂ ​+  2HCI → MgCI₂ ​+ 2 H₂ ​O

Explanation:

The smallest number of distillations you need to perform to achieve at least 90% compound a in your distillate is 3.

Draw a perpendicular line from 60% mol B on x axis. Note the factor in which this line intersects the decrease curve. Now from this draw line parallel to x axis and observe factor in which this line intersects the higher curve. Now from this factor draw a line parallel to y axis and observe the factor in which this line intersects the decrease curve. Now repeat the system till you attain 10 mol% B this is not anything however ninety mol% A.

The  smallest number of distillations you need to perform to achieve at least 90% compound a in your distillate is 3.

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In a weak acid and strong base titration, the pH at the equivalence point is affected by: the basicity of the salt anion. Hence, the final pH of the equivalence factor will be higher than 7.

At the equivalence point, the mixture of a weak acid and a strong base produces basic salt. This happens because the acid is too weak to donate the hydrogen ions to the solution, so it has an anion of a strong base. Meanwhile, the base is strong enough to accept hydrogen ions from water, so it has a cation of a weak acid. It affects the salt pH to be greater than 7 (basic salt).

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The Ka of chloroacetic acid is equal to 2.1 x 10⁻². The Ka for chloroacetic acid can be determined from the measured pH of a 0.11 M solution of chloroacetic acid.

To determine the value of Ka for chloroacetic acid (CH2ClCOOH), we can use the pH of the solution and the initial concentration of the acid. The equation for the dissociation of chloroacetic acid is:

CH2ClCOOH(aq) + H₂O(l) ⇌ CH2ClCOO-(aq) + H₃O+(aq)

At equilibrium, we can assume that x is the concentration of the hydronium ion (H₃O+) and the acetate ion (CH2ClCOO-), which will be equal since the acid is monoprotic. Therefore, the concentration of CH2ClCOO- will also be x. The initial concentration of CH2ClCOOH is 0.11 M.

The equilibrium expression for Ka is given by:

Ka = [CH2ClCOO-][H₃O+]/[CH2ClCOOH]

Substituting the equilibrium concentrations, we have:

Ka = (x)(x)/(0.11 - x)

Given that the pH of the solution is 1.91, we can calculate the concentration of H₃O+ using the relationship:

pH = -log[H₃O+]

1.91 = -log[H₃O+]

[H₃O+] = 10^(-pH)

[H₃O+] = 10^(-1.91)

[H³O+] ≈ 7.94 × 10⁻² M

Since the concentration of H3O+ is equal to x, we can substitute this value into the equilibrium expression:

Ka = (7.94 × 10⁻²)(7.94 × 10⁻²)/(0.11 - 7.94 × 10⁻²)

The Ka of chloroacetic acid is equal to 2.1 x 10⁻².

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Option B, The probability of observing a sample statistic is more extreme than the one obtained, assuming the null hypothesis is true defines the notion of the significance level of a hypothesis test.

The significance level of a hypothesis test is the probability of observing a sample statistic that is more extreme than the one obtained, assuming the null hypothesis is true.

This value is used to set the threshold for the level of evidence required to reject the null hypothesis in favor of an alternative hypothesis.

The significance level is commonly represented by alpha (α), with typical values being 0.01 or 0.05. If the calculated p-value is less than the significance level, the null hypothesis is rejected and the alternative hypothesis is supported.

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Answer:

Pasteurization:

It is the process in which any beverage such as milk or any other liquid is heated at a certain temperature to kill the bacteria and microorganisms that can cause spoilage or fermentation or any other disease.

Answer:

Vfinal = 22.7 L

Explanation:

PV = nRT

(2.0 atm)(20 L) = n(0.0821 L-atm/K-mol)(273 K)

n = 0.195 moles of CO2

P (final)V (final) = nRT

(380 mmHg)(Vfinal) = (0.195 moles)(0.0821 L-atm/K-mol)(273 K)

Vfinal = 22.7 L

Answer:

143.991

Explanation:

47.997 * 3 = 143.991

Answer:

455 Kcal

Explanation:

2Cl2(g) + 7O2(g) + 130kcal → 2Cl2O7(g)

Rearranging we get,

2Cl2(g) + 7O2(g)  → 2Cl2O7(g) Δ H = 130 kcal . mol⁻¹

So for per mol reaction will be as above.

In case of 7 mols of product, we need 7/2 mole ratio x 130 = 455 Kcal

The attraction mediated flow of water in the narrow tube has been termed as Capillary action. Thus, option A is correct.

The process of flowing up of liquid with the attraction force between the molecules and the surface has been achieved with the surface characteristics.

The surface has the force of attraction with the flowing liquids in the sample. It results in the increased surface interaction, and the liquid flows up in the tube against gravity.

The movement of the liquid in the water through a narrow tube has been termed as capillary action. Thus, option A is correct.

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Answer:

capillary action

Explanation:

The chemical shift of the peaks in H1 NMR is dependent on the molecular environment that the protons are in.

This is because the protons in the molecule experience different magnetic fields, depending on the other atoms and molecules around them. This affects the energy of the protons, resulting in different peaks in the spectrum. The shift may be either upfield or downfield, depending on the environment.

The chemical shift is affected by the electron density around the proton, which is determined by the molecular environment. Different molecular environments will result in different chemical shifts for the protons, leading to different peaks in the NMR spectrum.

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A glacier moving a boulder is an example of  erosion.

There are two basic ways that glaciers generate erosion: pulling and abrasion. A glacier picks up boulders and other sediments through the process of plucking. They sink to the glacier's base and are swept away by the moving ice. A glacier scrapes the underlying rock through the process of abrasion.

The process of a glacier scraping underlying rock is called abrasion. A glacier's sides and bottom include silt and boulders that have been frozen in the ice and function as sandpaper. They destroy the rock. They might also leave dings and grooves that indicate the glacier's motion.

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Answer:

ithink it is 9.0

Explanation: