Oxygen has a low boiling point because there are
A weak covalent bonds between the oxygen atoms
B
weak covalent bonds between the oxygen molecules
C
weak forces of attraction between the oxygen atoms
D weak forces of attraction between the oxygen molecules

Answers

Answer 1

The intermolecular forces between the oxygen molecules are very weak because of which a very less amount of energy is required for the oxygen to evaporate into a gas. There is no H-bonding or dipole movement present in oxygen molecules because of which the forces binding the molecules are absent in oxygen.

hence your correct option should be D


Related Questions

The atomic weight of element A is 88.7 if the element consist of two Isotopes that have mass number 88 and 92. what is the approximate % natural abundance of the heaviest Isotope?​

Answers

Answer: 17.5 %

Write the equation for relative Atomic mass in terms of an ( 'a' being one isotope's mass) and solve for x:

88.7 = [tex]\frac{(a * 88) + ((100 - a) * 92)}{100}[/tex]

8870 = 88*a + 9200 - 92 * a

4*a = 330

a = 82.5

Find the value of b using a,

100 - a = b

100 - 82.5 = b

b = 17.5

So, the % abundance for the isotope with mass number 88 is 82.5% and the % abundance for the isotope with mass number 92 is 17.5% .

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what has the biologist Rahul Kumar came to India to find

Answers

It is to be noted that Rahul Kumar the biologist came to India to find problems that he can solve using his knowledge in Biology.

Who is Rahul Kumar?

Rahul Kumar, an Indian and the son of a migrant worker from Bihar, graduated with honors from IIT Roorkee and is currently on his way to the United States to pursue his PhD at the University of Utah.

A biologist is a scientist who undertakes biological study. Biologists are interested in researching all forms of life on Earth, whether they be single cells, multicellular organisms, or communities of interacting individuals. They often specialize in a single field of biology and have a specialized research emphasis.

The majority of biologists work full-time at government agencies, private research laboratories, medical testing facilities, higher education institutions, or other research facilities.

Physician's assistants, radiation and nuclear medicine technologists, and registered nurses are among the hospital employment available to those with a bachelor's degree in biology. These positions can also be found in clinics, physicians' offices, nursing homes, rehabilitation institutions, government organizations, the military, and other settings.

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Choose the warmer temperature.
-29°f or -39°

Answers

-29 would be warmer good luck

The preexponential and activation energy for the diffusion of iron in cobalt are 1.1 × 10−5 m2/s and 253,300 J/mol, respectively. At what temperature will the diffusion coefficient have a value of 2.1 × 10−14 m2/s?

Answers

The temperature is obtained as  1517 K.

What is the temperature?

We know that we asked here to find the temperature at which we are going to have a diffusion coefficient of 2.1 × 10−14 m2/s. Let us look at the following from the question;

D = diffusion coefficient = 2.1 × 10−14 m2/s

[tex]D_{o}[/tex] = pre-exponential constant = 1.1 × 10−5 m2/s

[tex]E_{a}[/tex] = Activation energy = 253,300 J/mol

R = Gas constant = 8.314 J/mol.K

T = temperature = ??

Then;

log D= log  [tex]D_{o}[/tex] - Ea/2.303RT

log(2.1 × 10−14) = log( 1.1 × 10−5) - 253,300/2.303 * 8.314 * T

log(2.1 × 10−14) / log( 1.1 × 10−5) = - 253,300/2.303 * 8.314 * T

T = - 253,300/-8.719 * 2.303 * 8.314

T= 1517 K

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There are 0.05216 mol ZnSO4 and
0.3609 mol H2O in the sample.
Step 3: Divide each by the smallest number
of moles to get the ratio.
What is the ratio of ZnSO4:H2O?
[?]
mol ZnSO4: [?] mol H2O

Answers

The ratio of mol of ZnSO₄ : mol H₂O is 1:7.

Empirical formula- The relative ratios of the various atoms in a compound are given by an empirical formula. The ratios are still valid at the molar level. As a result, H₂O is made up of two hydrogen and one oxygen atoms. Similar to how 2.0 moles of hydrogen and 1.0 mole of oxygen make up 1.0 mole .

Steps to determine Empirical formula-

Determine the masses in Step 1. Step 2: Multiply the grams by the atomic mass to get the number of moles. Step 3: Subtract the smallest number of moles from the total number of moles of each element. Step 4: Make entire numbers out of the numbers.

Given,

0.05216 mol of ZnSO₄

0.3609 mol of H₂O

Here, the smallest number of mole is 0.05216.

Dividing each by the smallest number of moles to get the ratio -

⇒ 0.05216/ 0.05216 = 1

⇒ 0.3609/ 0.05216 = 6.91 ≈ 7

Therefore the mol ratio of ZnSO₄ and H₂O are 1 and 7 respectively.

Hence, 1 mol ZnSO₄ : 7 mol H₂O.

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Question 2
Based on the balanced chemical equation: 2 NH3 + 3 CuO → 3 Cu + N₂ + H₂O which of
the following statements is NOT true:
OH2O is a reactant
O Cu is a product
O CuO is a reactant
1.5 pts
NH3 is a reactant

Answers

2 NH3 + 3 CuO → 3 Cu + N₂ + H₂O in the equation the compounds that are on the left side were reactants and the compounds on the right side was products.

what is reactants and products?

Chemical reactions form and dissolve the chemical bonds that hold atoms together to form molecules. During a chemical reaction, the atoms are re organized; they become disengaged and reattached to one another in various ways, resulting in new compounds with diverse characteristics. Every chemical reaction has two parts:

Reactants – The beginning elements of a chemical reaction; what enters into the reaction

Usually written on the left side of a chemical reaction

Products — What is produced as a result of a chemical reaction.

Usually written on the right side of a chemical reaction.

among the given options the false statement was

H20 is a reactant was the false statement.

but the H2O was actually a product.

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I need help with this

Answers

1. Base
2. Acid
3. base
4. Neither

bace, acid and I'd not

bace, acid

The autoionization of water is a reversible reaction.

2H₂O ⇌ H3O⁺ + OH⁻

This reaction is endothermic (ΔH is positive).

What is the effect of increasing temperature of water on:

The numerical value of Kw

Answer 1
Choose...
pH

Answer 2
Choose...
[H3O+ ]

Answers

Reaction will move forward and favor according to Le Chatelier's principle on increasing temperature of water.

According to Le Chatelier's principle, the position of equilibrium will shift if a system in a state of dynamic equilibrium is disturbed by a change in its conditions. The point of equilibrium will shift toward the products to offset the additional reactant if you raise the concentration of one of the reactants. For instance, extra N2 will react with H2 in the system if it is added. More ammonia will be produced as a result of this.

Similar to this, the location of equilibrium would move to the left if you reduced the concentration of one of the reactants. In this instance, removing N2 would cause more NH3 to break down into the reactants.

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An element is a substance formed of

Answers

Answer:

the same kind of atoms

Explanation:

the same kind of atoms

how to increase rate of the reaction "nitrogen with hydrogen"

Answers

The reactants' concentration needs to be raised.

What factors influence rate of reaction?

The rate of the reaction controls how quickly the chemical reaction moves forward. The reaction's rate is influenced by a number of variables. These elements are:

(i) The concentration of the reactant: As the reactant concentration rises, the reaction rate does as well.

(ii) The reactant's nature. The condition, reactivity, or solution type of the reactants all have an impact on the reaction's pace.

(iii)The pressure of the gases: As the pressure of the gases involved in a reaction rises, so does its rate.

(iv) The surface area of the solids—As exposed surface area increases, so does the rate of reaction.

Therefore, if we to speed up the process, she should raise the reactant concentration since the more reactant molecules there are, the more molecules will actually collide, which will enhance the rate of the reaction.

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For this experiment, various solutions were compared to look for precipitation or bubbling. What is the independent variable in the experiment?

A. the precipitates or bubbles
B. all the solutions
C. only the pickle crisp and vinegar​

Answers

Answer:

A

Explanation:

Independent variable: the surface of the slope rug, bubble wrap and wood

For this experiment, various solutions were compared to look for precipitation or bubbling. The precipitates or bubbles are the independent variable in the experiment. Therefore, option B is correct.

What is precipitation ?

The term precipitation is defined as a solid produced by a change in a solution, often due to a chemical reaction or change in temperature that decreases solubility of a solid.

A substance separated from a solution or suspension by chemical or physical change, usually as an insoluble amorphous or crystalline solid.

A compound may precipitate when its concentration exceeds its solubility. This can be caused by temperature changes, solvent evaporation, or solvent mixing. A strongly supersaturated solution precipitates more quickly.

Independent variable are the surface of the slope rug, bubble wrap and wood.

Thus, option B is correct.

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What is the pH of a solution that is 0.21 M sodium fluoride and 0.57 M hydrofluoric acid?

Answers

The pH of a solution that is 0.21 M sodium fluoride and 0.57 M hydrofluoric acid is 3.36.

given the data as follows :

sodium fluoride ( base ) = 0.21 M

hydrofluoric acid ( acid )= 0.57 M

using the Henderson - Hassel Balch equation we get:

pH = pKa  +  log (base / acid)

pKa of hydrofluoric acid = 3.8

∴ pH = 3.8 + log ( 0.21 / 0.57 )

pH = 3.8 + ( - 0.4341)

pH = 3.36  

Thus, The pH of a solution that is 0.21 M sodium fluoride and 0.57 M hydrofluoric acid is 3.36.

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Is the structure of C4H6 rigid? (i.e. is it unable to rotate/move?) If not, which part of the molecule is not rigid? Try to describe the shape of this molecule.

Answers

The molecular structure of C4H6 rigid is Not rigid.

The Schrödinger equation, a quantum mechanical equation for the motion of electrons in the field of nuclei, can theoretically be used to identify the molecule structure. The bond lengths and bond angles in a molecular structure are those where the molecular energy is lowest. The numerical solution of the Schrödinger equation to determine structures has developed into a highly developed technique requiring the use of computers and supercomputers.

Either either neutron diffraction or microwave vibration-rotation spectra are used to determine the nuclear locations within a molecule. X-ray diffraction investigations can be used to analyse the electron cloud that surrounds a molecule's nucleus.

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An arctic weather balloon is filled with 30.6 L of hellum gas inside a prep shed. The temperature inside the shed is 12. °C. The balloon is then taken outside,
where the temperature is -28. °C. Calculate the new volume of the balloon.
You may assume the pressure on the balloon stays constant at exactly 1 atm. Be sure your answer has the correct number of significant digits.

Answers

The new volume of the balloon is 26.307L. This can be solved with the help of Charles' law.

What is Charles' law?

According to the Charles' law, the volume of the gas is directly proportional to the temperature at constant pressure.

Here we assume that the pressure is constant in both the cases.

V1/T1 = V2/T2

30.6L/285.15K = V2/245.15K

V2= 26.307L.

Therefore, the new volume at -28 degree Celsius and constant 1 atm pressure is 26.307L according to Charles' law.

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Determine the number of atoms of O in 7.23 moles of Fe(NO₃)₃.

Answers

The number of atoms of Oxygen in 7.23 moles of Fe(NO₃)₃ is 3.92 x 10²⁵.

Determine to total number of individual molecules of Fe(NO₃)₃ in 7.23 moles.

Use Avogadro's number for this: 1 mole = 6.02 x 10²³ molecules.

Thus, 7.23 moles of Fe(NO₃)₃ contains molecules,

7.23 x 6.02 x 10²³ = 4.35 x 10²⁴ molecules of Fe(NO₃)₃.

Determine how many oxygen atoms in one molecule of Fe(NO₃)₃. There are 3 Oxygen atoms in the nitrate NO₃, and 3 nitrate groups in Fe(NO₃)₃. Thus, number of oxygen atoms in Fe(NO₃)₃ is,

3 x 3 = 9 Oxygen atoms in 1 molecule of Fe(NO₃)₃.

Finally, multiply the number of O atoms in 1 molecule of Fe(NO₃)₃ by the total number of Fe(NO₃)₃ molecules.

9 x 4.35 x 10²⁴ = 3.92 x 10²⁵ total Oxygen atoms.

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At a certain temperature, the solubility of aluminum hydroxide is (8.70x10^-13) M. What is the Ksp at this temperature?

Answers

The solubility product (Ksp) at the given temperature is 2.27×10⁻²⁴

How do I determine the solubility product (Ksp)?

We'll begin by writing the dissociation equation of aluminum hydroxide, Al(OH)₃. This is shown below:

Al(OH)₃(aq) <==> Al³⁺(aq) + 3OH⁻(aq)

Finally, we shall determine the solubility product (Ksp). This is illustarted below:

Concentration of Al(OH)₃ = 8.70×10⁻¹³ MConcentration of Al³⁺ = 8.70×10⁻¹³ MConcentration of OH⁻ = 3 × 8.70×10⁻¹³ = 2.61×10⁻¹² MSolubility product (Ksp) =?

Ksp = [Al³⁺] × [OH⁻]

Ksp = 8.70×10⁻¹³ × 2.61×10⁻¹²

Ksp = 2.27×10⁻²⁴

Thus, we can coonclude that the solubility product (Ksp) is 2.27×10⁻²⁴

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35.0 L of an ideal gas at 268 K and 5.16 atm are heated to 343 K with a new pressure of 7.65 atm. What is the new volume (in L)?

Answers

From the calculations, the new volume of the gas is 30.2 L.

What is the new volume?

We know that we can be able to obtain the parameters that ahs to do with the gas by use of any of the equations of the laws that relate to an ideal gas.

Given that the;

Initial volume [tex]V_{1}[/tex] = 35.0 L

Initial temperature [tex]T_{1}[/tex] =  268 K

Initial pressure [tex]P_{1}[/tex]  = 5.16 atm

Final temperature [tex]T_{2}[/tex] = 343 K

Final pressure [tex]P_{2}[/tex] =  7.65 atm

Final volume [tex]V_{2}[/tex] = ??

Then we have to use the general gas equation;

[tex]P_{1}[/tex] [tex]V_{1}[/tex]/ [tex]T_{1}[/tex]=  [tex]P_{2}[/tex] [tex]V_{2}[/tex]/ [tex]T_{2}[/tex]

[tex]V_{2}[/tex] =  5.16 * 35.0 *  343/7.65 * 268

[tex]V_{2}[/tex] = 61945.8/2050.2

[tex]V_{2}[/tex] = 30.2 L

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I need help on #10 please

Answers

Answer:

Na,Ba,Ti,on their placement on the periodic table...

425 L of chlorine at 32° C will occupy what volume at -15° C while the
pressure remains constant?
502.4 L
185.2 L
O 199.2 L
359.5 L
*
2 points

Answers

According to the solution 359.5 L volume at -15° C while the pressure remains constant.

What kind of force is pressure?

The definition of force in physics is The push or pull on a massed object alters its velocity. An external factor is an agent that has the power to alter the resting or moving condition of a thing. It has a path and a magnitude.

Briefing:

Initial volume of chlorine gas = 425 L

Initial temperature = 32°C

Final volume = ?

Final temperature =  -15°C

Solution

Initial temperature = 32°C (32+273 = 305 K)

Final temperature =  -15°C (-15 +273 = 258 K)

The Charles Law will be used to resolve the presented issue.

This equation states that at constant pressure and molecular number, the volume of a given amount of a gas is precisely proportional to its temperature.

V₁/T₁ = V₂/T

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume

T₂ = Final temperature

We will now enter the values into the formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 425 L× 258 K /305 K

V₂ = 109650 L.K / 305 K

V₂ = 359.5 L.

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Explain the process of distillation with the help
of an
example.

Answers

Answer:

Distillation is the process of obtaining a liquid from a mixture containing a dissolved solute. The mixture is heated at a temperature just before the boiling point of the liquid. It evaporates and the vapor travels into a condenser flushed with cold water along the outside. The vapor loses its heat energy and cools into a liquid state. It then falls into a beaker on the other end as a distillate.

An example is desalination, where water is removed from seawater.

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How many grams of NCI3
are in 4.00 moles of NC13?

Answers

The mass of NCl3 in 4.00 moles of NCl3 is 481.44 grams

Mole is defined as the amount of the substance containing the same number of discrete entities (atoms, molecules, ions, etc) as there are atoms in a sample of pure 12C weighing exactly 12g. The number of particles present in one mole of any substance =Avogadro Number=6.

The formula for number mole is given as:

Number of moles =  Mass of the substance ; Now substituting the values

                                   Molar mass

⇒ 4.00 =  x                               [Molar mass of NCl3 = 120.36]

               120.36

⇒ x = 4.00 × 120.36

⇒ x = 481.44 grams

Therefore the mass of NCl3 is 481.44 grams

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What is the density of an object that has a mass of 6.2 g and a volume of 4.4 mL ?

Answers

Density=mass/volume

d=6.2/4.4

d=1.40 grams/cm³

thsof
is which acid H2S04

Answers

Explanation:

H2So4=sulphuric acid , strong acid

Choose the colder temperature.

A) -30°F
B) 20°F

Answers

[tex]-6.66^{0} C[/tex][tex]-30.4^{0} C[/tex]Between the two options, the option A shows the colder temperature, that is [tex]-30^{o}[/tex] F.

How to determine the colder temperature?

Both Fahrenheit and Celsius employ different temperatures as the water's freezing and boiling points, as well as differing sizes for their degrees. While water freezes at zero degrees Celsius and boils at one hundred degrees C, it does so at 32 degrees Fahrenheit and two hundred and twenty degrees F, respectively. You can see that although Fahrenheit has 180 ° between the freezing and boiling extremes, Celsius has 100 degrees. The difference between one degree Celsius and one degree Fahrenheit is 1.8.

On converting [tex]-30^{o}[/tex] F to Celsius we get, [tex]-30.4^{0} C[/tex]

and on converting [tex]20^{o} F[/tex] to Celsius, we get, [tex]-6.66^{0} C[/tex]

Hence, we can say [tex]-30.4^{0} C[/tex] is colder temperature than [tex]-6.66^{0} C[/tex].

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What is the pH of 3.9 M potassium fluoride?

Round your answer to 2 decimal places.

Answers

The pH of the 3.9M of pottasium fluoride is 0.591.

How to calculate pH?

pH of a solution can be described as the figure expressing the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral, lower values are more acid and higher values more alkaline.

The pH of a solution can be calculated by using the following expression:

pH = -log {H}

Where;

H = hydrogen ion concentration

According to this question, a 3.9 M potassium fluoride is given. The pH can be calculated as follows:

pH = - log {3.9}

pH = -0.591

Therefore, the pH of the solution is 0.591

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24. The thumbprint-shaped region on the pressure/enthalpy
chart is called the
A. saturation curve.
B. saturation cycle.
C. superheated curve.
D. superheated region.

Answers

The thumbprint-shaped region on the pressure/enthalpy chart is called saturation curve

An enthalpy chart show the A/C cycle and at what temprature and pressure  the refrigerant changes from gas to liquid and back to gas and the vapor liquid saturation curve of the pure substances is important from both the practical and thermodynamic viewpoint because it provide basic information on the behavior of the fluid as well as on its properties and the loop is the most common type of fingerprint and the ridges form elongated loop and some people have double loop fingerprint

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0.620 L of a 2.6 MKCl solution Express your answer using two significant figures.

Answers

The number of moles in 0.620 L of a 2.6M KCl solution is 1.61 moles.

How to calculate number of moles?

Molarity is the concentration of a substance in solution, expressed as the number of moles of solute per litre of solution.

The molarity of a solution can be calculated by dividing the number of moles of the substance by its volume as follows:

no of moles = molarity × volume

According to this question, 0.620 L of a KCl solution has a molarity of 2.6 M. The number of moles of the substance is as follows:

no of moles = 2.6M × 0.620L = 1.612moles

Therefore, 1.61 moles is the number of moles in the pottasium chloride solution.

The incomplete question is as follows:

Determine the number of moles contained in 0.620L of a 2.6 M KCl solution.

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Arrange methanoic acid, methanol and methylamine in order of increasing boiling point

Answers

Answer: CH3-CO-CH3<CH3-CH2-OH<CH3-COOH

Explanation:

basically the boiling point depends upon the intermolecular hydrogen bonding. thus alcohol tends to have a higher boiling points then ketones because they have -OH group unlike carbonyl.

7. Help question is in picture below!

Answers

The equation of the reaction can be obtained as the net ionic equation of the reaction is; [tex]Fe^{2+} (aq) + CO_{3} ^{2-} (aq) ----- > Fe CO_{3} (s)[/tex]

What is the net ionic equation of the reaction?

The term net ionic equation has to do with the fact that we have considered the is that did not participate in the reaction. These ions that did not change in the course of the reaction are called the spectator ions in the reaction.

As we look at the reaction, we can see that ions that did not change in the reaction are the chlorate ion and the sodium ion. Thus the net ionic equation can be written as; [tex]Fe^{2+} (aq) + CO_{3} ^{2-} (aq) ----- > Fe CO_{3} (s)[/tex].

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What summarizes the process of cellular respiration in plants and animals

Answers

In both plants and animals, the process of cellular respiration may be broken down into the following steps: Oxygen + carbon dioxide.

When plant cells undergo cellular respiration, oxygen is taken in through the plant's leaves from the surrounding atmosphere, and carbon dioxide is exhaled back into the atmosphere as a byproduct of the process. In contrast, when animal cells undergo cellular respiration, oxygen is taken in through the lungs, and carbon dioxide is exhaled through the lungs.

Therefore, a quick review, throughout the process of cellular respiration, plants and animals trade oxygen and carbon dioxide with one another.

Therefore, we may draw the following conclusion: Oxygen + carbon dioxide is a shorthand for the process of cellular respiration in plants and animals.

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