1.) What is the molecular weight of the ketone shown below?



2.)Dry ice sublimes at −78.5 oC at a pressure of 1 atm. At room temperature and 1 atm pressure, what is happening to the dry ice molecules on a molecular level as sublimation occurs?



3.)For the pairs of molecules given below, list the intermolecular forces in each molecule. Also, give the types of electrostatic interactions that could occur between each pair of molecules



cyclohexane and CH2Cl2


CH3CH2OCH2CH3 and CH3CN

Answers

Answer 1

Answer:

See explanation

Explanation:

1. The Ketone was not sown in the question but i can give you a general idea of how to calculate its molecular weight. A ketone has a general molecular formula of CnH₂nO.

The molecular weight is calculated knowing that the relative atomic mass of carbon is 12, that of hydrogen is 1 while that of oxygen is 16.

Hence from the general molecular formula, the molecular weight of any ketone is calculated from; n(12) + 2n(1) + 16. Where n represents the number of atoms of each element in the ketone.

2. Sublimation of dry ice occurs when the molecules in dry ice absorb sufficient energy in the form of heat such that they now have enough energy for some molecules to overcome the inter molecular forces acting in the solid crystal and transform directly into the vapor phase. This process is endothermic.

3.  

cyclohexane and CH2Cl2 molecules are held together by dispersion forces.

CH3CH2OCH2CH3 and  CH3CN are polar molecules held together by  dipole-dipole forces.


Related Questions

Are ionic compounds not carrying a charge?​

Answers

Answer:

yes they carry charges

There is free rotation about the carbons of ethane but not th
of ethane. This is due to the fact that
A. the carbons in ethane are round
Balkenes do not rotate
C. the carbons in ethane are linked by double bonds
D. the carbon in ethane are smaller than those of ethane​

Answers

Answer:

C. the carbons in ethene are linked by double bonds

Explanation:

The reason for the lack of free rotation about the carbons of ethene is that they are linked with with double bonds.

In single bonds afforded with the ethane compound, there is free rotation.

The double bonds confer a special restriction on the rotational potential of the bonded atoms round the carbon.

Negative ions have ______ (More or Less) protons than electrons.

Answers

Answer:

Less

Explanation: I took the test.

Answer: negative ions have less protons than electrons.

Explanation:

n which phase(s) of matter are the atoms closely packed but still able to slide past each other?

gas
liquid
solid and gas
liquid and solid

Answers

Answer:

I belive its liquid if I'm right because liquids are packed together when they take shape but they are still able to move.....brainliest???

Answer:

Liquid

Explanation:

Please don't jugde me if I got it wrong

Colour in acid of red litmus paper​

Answers

Red

Litmus paper turn red when it comes in contact with acid. It turn blue if it come in contact with a base. Neutral litmus paper is purple

can somebody help me with this please

Answers

Answer:

He, 2, 2, 2, 4, 4-2=2, 1, 8

I, 53, 53, 53, 127, 127-53= 74, 5, 7

Explanation:

um check the periodic table for the rest?

Based on the figure below, what do the elements of a group (family) have
in common

Answers

Answer:

Explanation:

Send figure below

In the following reaction, how many grams of H2O are produced if 2.00 g of N2H4 react? N2H4 + 3 O2 ---> 2NO2 + 2H2O

Answers

Answer:

2

Explanation:

From this equation, 2 grams are produced.

The mass of H₂O produced from the reaction is 2.25 g

We'll begin by calculating the mass of N₂H₄ that reacted and the mass of H₂O produced from the balanced equation.

N₂H₄ + 3O₂ —> 2NO₂ + 2H₂O

Molar mass of N₂H₄ = (2×14) +(4×1) = 32 g/mol

Mass of N₂H₄ from the balanced equation = 1 × 32 = 32 g

Molar mass of H₂O = (2×1) + 16 = 18 g/mol

Mass of H₂O from the balanced equation = 2 × 18 = 36 g

SUMMARY

From the balanced equation above,

32 g of N₂H₄ reacted to produce 36 g of H₂O.

Finally, we shall determine the mass of H₂O produced by the reaction of 2 g of N₂H₄

From the balanced equation above,

, 32 g of N₂H₄ reacted to produce 36 g of H₂O.

Therefore,

2 g of N₂H₄ will react to produce = (2 × 36) / 32 = 2.25 g of H₂O

Thus, the mass of H₂O produced from the reaction is 2.25 g

Learn more: https://brainly.com/question/13403073

Convert 62.5 L to mm
3

Answers

Answer:

0.0625

Explanation:

Answer:

62,500

Explanation:

The three types of symbiosis are ___ and ___

Answers

Answer:

mutualism,commensalism and parasitism

Answer:

mutualism, commensalism, and parasitism

Which pair of elements is most likely to form an ionic compound with each other?



sulfur and carbon


barium and chlorine


oxygen and fluorine


calcium and sodium

Answers

Barium and chlorine

Li and S - covalent or ionic bond?

Answers

Answer:

It is an ionic bond.

Explanation:

Ionic bonds occur when a metal and a nonmetal combine, while covalent bonds occur between two nonmetals. Lithium is a metal and sulfur is a nonmetal.

It’s a ionic bond I believe. We just learned about this in school

Some things that can be made from coal are...
A. All of the above
B. Tar
C. Generating power
D. Plastics
E. Fertilizer

Answers

Answer:A

Explanation:just casuse

points)
(06.01 LC)
Based on the kinetic theory, which statement is true? (4 points)
A
Matter consists of only large molecules.
B
Matter is made up of only charged particles.
C
The particles of matter have zero kinetic energy and potential energy.

D
The particles of matter are arranged in different ways for the different state.

Answers

Answer:

D .The particles of matter are arranged in different ways for the different state.

Explanation:

The kinetic molecular theory is used to explain the forces between molecules and the energy the molecules possesses.

One of the key postulate of this theory is that;

The particles of molecules are continual state of motion. They posses kinetic energy. In gas, the particles are random and moves in a straight line motion. Liquids are less random and only slide past one another. Solids have a restricted space and the molecules are free to move about.

Therefore, we can see that the particles of matter are arranged in different ways for different state.

what is electron shielding?

Answers

Answer:

Electron shielding is when the inner electrons shield the outer electrons from the full force of the nucleus

Electrons in an atom can shield each other from the pull of the nucleus. This effect, called the shielding effect, describes the decrease in attraction between an electron and the nucleus in any atom with more than one electron shell. ... The more shielding that occurs, the further the valence shell can spread out.

I need help I know it isnt A

Answers

It is B. Thank you later please and do good on the test!
The answer is D. You have the right answer highlighted!

I WILL MARK BRAINLIEST!!!!! !!



(picture included with one question ^^^^^^^)

Answers

Answer:

type D

balance form .b

Explanation:

3 way to make bases​

Answers

Sorry it’s really unclear what your asking

. The model shows Earth in several positions relative to the Sun. In which position is it winter in North America?​

Answers

What does the model look like
all the way to the right

What might happen if you mixed a strong acid with an equally strong base?
A.You would see an explosive chemical reaction.
B.The acid would destroy the base.
C.The base would destroy the acid.
D.You'd wind up with a pH-neutral salt and water.

Answers

Answer:

D

Explanation:

When you mix a strong acid and a strong base : ( D ) You will wind up with a pH-neutral salt and water

The mixture of a strong base and an equally strong acid results in a neutralization reaction, because at the point of equivalence the base and acid will completely neutralize each other.

The mixture solution will have a pH value of 7 and the end products will an ionic salt and water.

Hence we can conclude that When you mix a strong acid and a strong base , you will wind up with a pH-neutral salt and water.

Learn more : https://brainly.com/question/23008798

What is the density of an object (g/cm) that has a mass of 2.78 g & a volume of 10.0
cm3?

Answers

Answer:

The answer is 0.28 g/cm³

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question we have

[tex]density = \frac{2.78}{10} \\ = 0.278[/tex]

We have the final answer as

0.28 g/cm³

Hope this helps you

Answer:

p = 0.278 g/cm3

Explanation:

What is the enthaply of dissolution? ​

Answers

Answer:

The enthalpy change of solution refers to the amount of heat that is released or absorbed during the dissolving process (at constant pressure).

Explanation:

The enthalpy of solution, enthalpy of dissolution, or heat of solution is the enthalpy change associated with the dissolution of a substance in a solvent at constant pressure resulting in infinite dilution.
The enthalpy of solution is most often expressed in kJ/mol at constant temperature. The energy change can be regarded as being made of three parts, the endothermic breaking of bonds within the solute and within the solvent, and the formation of attractions between the solute and the solvent. An ideal solution has a null enthalpy of mixing. For a non-ideal solution it is an excess molar quantity.

7th grade help me plzzzzzzzz

Answers

Answer:

1. Metals

2. Solid, gas, liquid

Explanation:

For #1:

The majority of elements in the periodic table are classified as metals. The transition metals lie in the center of the table, spanning groups three through 12. These elements are solid at room temperature, except mercury, and have the metallic color and malleability expected of metals.

Hope this helps :)

Can someone pls answer quickly?

Answers

answer is atom.Hope it is helpful.

Answer:

Atoms are the smallest particles that made up matter.

State which statement is a physical change or a chemical change:
(a) Sawing wood
(b) Cooking eggs
(c) Melting chocolate
(d) Chewing sweets
(e) Rusting iron
(f) Filing your fingernails
(g) Milk turning sour
(h) Blow-drying your hair
(i) Boiling water
(j) Baking a cake
(k) Burning a match

Answers

Answer:

Physical change: A,C ,D, F, H, I

Chemical Change: B, E, G, J, K

A solid is composed entirely of xenon atoms. What type of solid is it?
a) ionic
b) metallic
c) covalent network
d) atomic
e) molecular
f) amorphous

Answers

Answer:

ionic

Explanation:

xenom atoms are too large to move in the crystals without first associating with two oxygen ion vacancies and one uranium ion vacancy

Jeremiah pushed Anthony with a net force of 12 N. Anthony accelerated across the hall at 0.2 m/s2. What was Anthony’s mass?

Answers

Answer:

6

Explanation:

Answer:  60 kilograms

Work Shown:

Force = Mass*Acceleration

F = ma

12 = m*0.2

12/0.2 = m

60 = m

m = 60 kilograms

Write a Formula
Compound Name: Strontium Sulfate

Answers

SrSO4 is the formula

Answer:

it's SrSO4

Explanation:

A motorcycle starts at rest and moves a distance of 460m .
If it has constant acceleration of 4m55 m/s2 what is its final velocity

Answers

Answer:

The final velocity of the motorcycle is 64.7 m/s

Note: Since the value for the acceleration of the motorcycle is not clear, it is assumed to be 4.55 m/s² in the calculation

Explanation:

Using the equation of motion that contains all the given values in the question: v² = u² + 2as

where v is final velocity; u is initial velocity; a is acceleration; s is horizontal distance

v = ?, u = 0 (since the motorcycle starts from rest), a = 4.55 m/s², s = 460 m

v² = 0² + 2 * 4.55 * 460

v² = 4186

take square root of both sides

v = 64.7 m/s

Therefore, the final velocity of the motorcycle is 64.7 m/s

What is the cost to drive to Los Angeles from San Francisco a distance of 405 miles if the cost of gasoline is $2.90 a gallon and the car get 25 miles per gallon of gas?

Answers

Answer: $46.98

Explanation:

The distance to drive to Los Angeles from San Francisco is 405 miles. Since the car get 25 miles per gallon of gas, for 405 miles, the car will use:

= 405/25 = 16.2 gallons

Since the cost of gasoline is $2.90 a gallon and the car will use 16.2 gallons. The cost will be:

= $2.90 × 16.2 gallons

= $46.98

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