which intermolecular force(s) attract hexane molecules to one another in a liquid sample of pure hexane, c6h12 (l) (condensed structural formula: ch3-ch2 ch2-ch2-ch2-ch3)?

Answer:

The last one

Explanation:

When we are classifying we try to distinguish between the type, the properties just like clothes

1.37 × 1024 molecules of carbon dioxide will be produced.

The balanced chemical equation for the combustion of acetaldehyde with excess oxygen is given as;`2CH3CHO + 3O2 --> 2CO2 + 2H2O`

Now that we have a balanced equation, we can determine the number of molecules of CO2 that will be produced. The coefficients in the balanced equation represent the mole ratios between the reactants and products, so we can use them to convert between moles of acetaldehyde and moles of carbon dioxide.

Here are the steps:1. Determine the number of moles of acetaldehyde: We can use the given mass and molar mass of acetaldehyde to find the number of moles.`100 g CH3CHO × (1 mol CH3CHO / 44.05 g CH3CHO) = 2.27 mol CH3CHO`

2. Use the mole ratio from the balanced equation to find the number of moles of CO2 produced: From the balanced equation, we can see that 2 moles of CH3CHO produce 2 moles of CO2.

Therefore, the mole ratio is 1:1.`2.27 mol CH3CHO × (2 mol CO2 / 2 mol CH3CHO) = 2.27 mol CO2`3.

Convert moles to molecules: Finally, we can convert the number of moles of CO2 to the number of molecules using Avogadro's number.`2.27 mol CO2 × (6.02 × 1023 molecules/mol) = 1.37 × 1024 molecules of CO2`Therefore, 1.37 × 1024 molecules of carbon dioxide will be produced.

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Answer: 2.13

Explanation: i crawled so you could run :)

No, his digestive system is breaking down starch molecules, but he could not have a functioning respiratory system.

The gastrointestinal tract and other digestive organs make up the human body's digestive system (the tongue, salivary glands, pancreas, liver, and gallbladder). Food must first be digested and broken down into ever-smaller pieces in order to be absorbed and assimilated into the body. The three phases of the digestion process are the cephalic, stomach, and intestinal phases.

The first phase of digestion, referred to as the cephalic phase, is initiated by gastric gland secretions in response to the sight and smell of food. Chewing and the action of digestive enzymes in the mouth during this phase break down food mechanically and chemically. Lingual lipase and amylase, two digesting enzymes, are released into the salivary and serous glands of the tongue.

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Answer:

false

Explanation:

you have bromine , its a non metal and liquid in room temperature

Answer:

B

Explanation:

cool air never rises so not A

C would mean its getting warmer

and heat flows from warm to cool so not D

we are left with B

if my anwser helps please mark as brainliest.

Answer:

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Explanation:

The concept Boyles law is used here to determine the final pressure of the gas. Boyle's law was put forward by the Anglo-Irish chemist Robert Boyle in the year 1662. The final pressure of the gas is  7.66 atm.

At constant temperature, the volume of a given mass of gas is inversely proportional to its pressure. It can also be explained as at constant temperature, the product of pressure and volume of a given mass of gas is constant.

A straight line graph is obtained when pressure is plotted against the inverse of the volume.

Mathematically the law can be expressed as:

V∝ 1/P

PV = k (Constant)

Here 'V' is the volume and 'P' is the pressure of the gas.

For two different gases, the equation is given as:

P₁V₁ = P₂V₂

P₂ = P₁V₁ / V₂

1 torr = 0.00131 atm

P₁ = 0.023 atm

0.023 × 50.00  / 0.1500 = 7.66 atm

Thus the final pressure is 7.66 atm.

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Answer:

here are your answers

Explanation:

Answer:

The diagram shows three isotopes. What element is represented?

A. hydrogen

B. helium

C. lithium

A. hydrogen

A. Is The Correct Answer

Answer:

B.

Explanation:

The atomic model represents the position of the sub-atomic particles. Model A was proposed after Rutherford's scattering experiment where the positive particles were deflected in the middle. Thus, option A is correct.

Rutherford's atomic model proposed the presence of the positive nucleus in the middle of the atom while the electrons surrounded them in their orbitals with a negative charge.

He performed the scattering experiment where alpha particles emitted by the radioactive element were used to locate the positions of the electrons, neutrons, and protons.

According to the experiment, model A, best fits as the nucleus made of protons and neutrons takes the center of the atom with negative electrons surrounding them. The nucleus is small as compared to the entire atom.

Therefore, option A. model A best proposes Rutherford's model.

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How much Na3PO4Na3PO4 is required to make 575 mLmL of the a solution with a 1.50 MM Na+Na+ ion concentration.

The symbol for the unit is mol.

The number of molecules ratio is written as follows.

Given.

The formula for moles is.

Mass of material / Mass from one mole equals the number of moles.

95 / 86.94 equals the number of moles.

By dividing the amount of each solutions by its molarity, you can figure out the molecular weight of each reactant. By dividing the amount of units of every reaction by its equimolar coefficient in the chemical equation, you may determine which chemical is the limiting one.

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Answer:

I dont know what that is I just need points lol sorry

Answer:

1. metaphase

2. prophase

3. telophase

4. interphase

5. interphase

6. interphase

7. anaphase

8. interphase

(4,5,6,8 I'm not sure)

The fish would not survive because the amount of the oxygen corresponds only to 0.0047ppm.

We know that the ppm is one of the units that can be used to measure the concentration. Note that the ppm is the acronymn that stands for parts per million.

In this case, we have to note that the parts per million that we talking about in the problem that we have here is actually mL or oxygen per mL of water. We can see that in the case that we have, the amount of the oxygen is 0.0047 mL in 1L of water which is less than the threshold amount required.

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The VSEPR theory not only provides information about the geometry of the molecule but also about the central atom in the molecule.

The VSEPR theory, also known as the Valence Shell Electron Pair Repulsion theory, provides information about the geometry of molecules. However, in addition to geometry, it also provides information about the electron groups, bond angles, and hybridization state of the central atom in the molecule. The hybridization state is a concept that refers to the hybrid orbitals formed by the central atom to make bonds.

The VSEPR theory is based on the idea that electrons are negatively charged and repel each other. This means that the electron groups around the central atom will be arranged in a way that minimizes their repulsion. By knowing the number of electron groups, the bond angles and hybridization state of the central atom can be determined. These factors determine the geometry of the molecule. Therefore, the VSEPR theory not only provides information about the geometry of the molecule but also about the central atom in the molecule.

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Answer:

Ba²⁺ + CO₃²⁻ → BaCO₃

Explanation:

A net ionic equation is a way to write a chemical reaction in which you list only the species that are participating in the reaction.

For the reaction:

Ba²⁺ + 2NO₃ + 2Na⁺ + CO₃²⁻ → BaCO₃ + 2Na⁺ + 2NO₃

As you can see, NO₃ and Na⁺ are not participating in the reaction. Thus, net ionic equaation is:

Ba²⁺ + CO₃²⁻ → BaCO₃

Complete Question

Consider the total ionic equation below.

\(Ba^{2+} + 2NaO_3^{1 -} + 2Na^{+} + CO_3^{2-} ----> BaCO_3 + 2Na^{+} + 2NO_3^{1-}\)

Which is the net ionic equation for the reaction?

A \(Ba^{2+} _{(aq)} + CO_3 ^{2-} _{(aq)} ----> BaCO_3_{(s)}\)

B \(2Na^+ + CO_2 ----> Na2CO3\)

C \(NO3 + Na ^ + ----> NaNO3\)

D   \(Ba_2^+ + 2NO3 ----> Ba(NO3)2\)

Answer:

Option A is the correct option

Explanation:

The given ionic equation is

       \(Ba^{2+} + 2NaO_3^{1 -} + 2Na^{+} + CO_3^{2-} ----> BaCO_3 + 2Na^{+} + 2NO_3^{1-}\)

Looking at this complete ionic equation we see that \(Na^{+1} \ and \ NO_3^{1-}\) did not change in the reaction so they will not be included in the net ionic equation so the net ionic equation becomes

         \(Ba^{2+} _{(aq)} + CO_3 ^{2-} _{(aq)} ----> BaCO_3_{(s)}\)

Explanation:

Compound: a substance that is made up of more than 1 type of atom bonded together Example: H2O

Mixture: combination of two or more elements or compounds not chemicaly bonded together. example: Sugar and salt in one container

elements pure substance of an atom. Example: hydrogen

Answer:

Explanation:

South Africa, the USA (Nevada, Alaska), Russia, Australia and Canada.

Answer:

b

Explanation:

everyone looks even a little bit like their parents, even trees

Irrespective of the mode of reproduction, the offsprings will have traits that depends directly on its parents,s genetic material. Hence, option C is correct.

Genetic material in a living cell is the basic unit of the cell. The DNAs , deoxyribose nucleic acid are the genetic material which determines our all characteristics.

DNAs are double stranded molecules having double helical structure with nitrogen base pairs as the steps in the helical staircase model. These genetic materials are specific for each organisms.

DNAs are located inside the nucleus where chromosomes are covering the DNAs. During cell division one DNA will replicate into two identical DNAs and that is transferred to offsprings. Thus, cell division results in two genetically identical daughter cells and which are inherited to the offsprings.

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Explanation:

Atomic size gradually decreases from left to right across the periodic table because within a period of elements, all electrons are added to the same shell. However, at the same time, protons are being added to the nucleus, making it more positively charged. The effect of increasing proton number is greater than that of the increasing electron number. Therefore, there is a stronger nuclear attraction. This means that the nucleus attracts the electrons more strongly, pulling the atom's electron shells closer to the nucleus. As a result, the atomic diameter of the atom decreases.

Answer:

well with that you can make a water maker that might make you brother happy because it will keep him alive

Explanation:

Answer:

you could sew a doll for him

or you could punch him in the face and tell him to cheer up

Explanation:

Answer:

HCl is a polar covalent compound, because of electronegativity difference between Cl(3.5) and hydrogen (2). Hence in this way, the bond between HCl breaks and they formed ions in the polar solvent like water .

The standard entropy change for the dissolution of caf2 in water at 298 K is 56.11 kJ.

Entropy is the total amount of energy that is not available to do a work.

The reaction is

CaF₂(s) → CaF₂(aq)

S° of CaF₂(s) = 68.87 J/K•mol

S° of CaF₂(aq) = –80.8 J/K•mol

ΔH°f of CaF₂(s) = –1219.6 kJ/mol

ΔH°f of CaF₂(aq) = –1208.09 kJ/mol

(– 80.8 ) – ( 68.87 )

= –149.67 J/K

(–1208.09) – (–1219.6) = 11.51 kJ

(11. 51 J) – (298 K) (–149.67 J/K) = 56112 J

= 56.11 kJ

Thus, the standard entropy change for the dissolution of caf2 in water at 298 K is 56.11 kJ

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Answer:

Since excited atoms can't be excited for long, the electrons jump down to a lower energy level, and as this occurs, the electron emits a photon with energy (and thus wavelength) equal to the difference in energy levels between the two levels the electron jumps in between.

Explanation:

Electrons in atoms and molecules can change (make transitions in) energy levels by emitting or absorbing a photon (of electromagnetic radiation), whose energy must be exactly equal to the energy difference between the two levels.

Electronic transitions involve exciting an electron from one principle quantum state to another. Without incentive, an electron will not transition to a higher level. Only by absorbing energy, can an electron be excited.

No, it is not possible to give a specific quantity of the concentration for the C10 sulfate that can give similar benefits like C12 sulfate .

In order to identify the concentration of  C10 sulfate  that can give similar benefits as C12 sulfate is depend on various factors, like extensive use of the product, their desired properties, importance and application with requirements.

In general, the concentration of any product that requires similar benefits is governed by various factors such as molecular weight, solubility, and surface activity of the sulfate. Therefore, in these conditions it is required  to conduct a thorough analysis and research about the specific application and the properties of C10 sulfate for determining the optimal concentration with similar benefits for C12 sulfate.

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Answer:

Là những oxit tác dụng với bazo để tạo ra muối và nước, phản ứng với nước tạo thành một axit.

Những oxit axit thường gặp: CO2, SO2, SO3, P2O5, Mn2O7.

Answer:0

Explanation: zero because it is the most stable form of oxygen in its standard state

After 114 years only 1.23 mg of the sample would be left.Given that the radioactive Strontium-90 has a half-life of 28.8 years and we need to find the amount of a 5.00 mg sample that would be left after 114 years.

We can calculate the required amount of sample as follows;The half-life of the substance is 28.8 years which means that the amount of the substance reduces to half after 28.8 years. Using this information, we can find out the fraction of the sample left after 114 years by dividing the time by half-life.Fraction remaining after 114 years= (Time passed)/(Half-life)=114/28.8≈3.96So, after 114 years the fraction of sample remaining is 3.96.

Therefore, the mass remaining will be;Mass remaining = 5.00 mg × 3.96/16= 1.23 mg

Hence, after 114 years only 1.23 mg of the sample would be left. Therefore, 1.23 is the answer.

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Answer:

9.82 g/cc or g/mL Solution: Density = mass / volume Volume is the difference in the levels of water in the cylinder. ie 28.49-22.77= 5.72 mL Mass given as 56.15 g.

Explanation: