CHEMISTRY MIDDLE SCHOOL

What type of intermolecular force occurs between polar molecules? A) dipole-dipole force
B) hydrogen bonding
C) induced dipole force
D) polar covalent bonding

Answers

Answer 1
Answer:

The intermolecular force occurs between polar molecules is dipole-dipole bonding. The correct option is A)

What are intermolecular force?

Intermolecular forces are those forces that occur when two atom, molecules or ions come close together. There are different types of intermolecular force present between different molecules.

Thus, the correct option is A) dipole-dipole force

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Answer 2
Answer:

Answer:

A) dipole-dipole force

Explanation:

A dipole-dipole force is the type of intermolecular force that occurs between polar molecules.


Related Questions

HIGH SCHOOL

Consider the following balanced equation: Cu + 2H+ -->Cu2+ + H2

Which of the following statements is true?
a) H+ gains one electron and is reduced
b) H+ gains one electron and is oxidized
c) H+ loses one electron and is reduced
d) H+ loses one electron and is oxidized

Answers

Cu + 2H+ -->Cu2+ + H2  


a) H+ gains one electron and is reduced

b) H+ gains one electron and is oxidized

c) H+ loses one electron and is reduced

d) H+ loses one electron and is oxidized


Here,

H+ is changing to H2

hence its oxidation number is changing from +1 to zero,

thats its getting reduced as the oxidation number is decreasing here.

H+ + 1 e- → H


H+ gains one electron and is reduced.

It goes from H+ to H, so it gains an electron. Gaining an electron is reduction.
HIGH SCHOOL

How many electrons are in an atom of elemental sodium?

Answers

Equal to the number of protons

There are 11 electrons in a atom of elemental sodium.

Hope this helps!
HIGH SCHOOL

You are given two closed containers. Each containing a liquid solvent. Ammonia and table salt will dissolve in container A. Hexane and carbon dioxide will dissolve in container B. What are the possible solvents in containers A and B? A) A - water; B - carbon tetrachloride B) A - carbon tetrachloride; B - water C) A - bromine; B - oil D) A - oil; B - bromine

Answers

Ammonia and table salt will dissolve in container A. Hexane and carbon dioxide will dissolve in container and the possible solvents in the containers A and B are water and carbon tetrachloride and the correct option is option A.

What are polar and non polar solvents?

A  solvent is polar when there are dipole moments or a large number of partial charges. There will be an electronegative difference between the bonded atoms of the solvent.

  • Non-polar solvents are those solvents which do not have partial charges or dipole moments in them. There will be very small or zero electronegativity difference between the bonded atoms of the solvent.
  • Polar solvents can dissolve polar solutes since both the oppositely charged dipoles attract each other but they cannot dissolve non-polar solutes. Similarly, a nonpolar solvent can dissolve only nonpolar solutes and they cannot dissolve polar solvents.

Ammonia and table salt are polar and dissolve in water while hexane and carbon dioxide are non polar and thus dissolve in non polar carbon tetrachloride.

Therefore, ammonia and table salt will dissolve in container A. Hexane and carbon dioxide will dissolve in container and the possible solvents in the containers A and B are water and carbon tetrachloride and the correct option is option A.

Learn more about Polar and non polar solvents, here:

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Ammonia and table salt dissolves in polar solvents, so A is water,
CO2 and hexane are non-polar substances, so they are going to be dissolved in non-polar solvent, so I think it is going to be carbon tetrachloride

Answer is A) A - water; B - carbon tetrachloride

Table salt does not dissolve in oil and CCl4, and Br2 is too active and it is going to react with NH3.
HIGH SCHOOL

Kevin has 5 fish in his fish tank jasmine has 4 times as many fish as Kevin.How many fish does jasmine have?

Answers

Jasmine have 20 fish because4 times 5 equals 20
HIGH SCHOOL

Which of the following properties of a base makes it a good cleaner? A. Looks shiny
B. Reacts with oils and grease
C. Reacts with certain metals to produce hydrogen gas
D. Has a floral smell

Answers

Answer: The correct answer is B.

Explanation:

Bases generally dissolves oil or base breaks down the fat.

When base reacts with oil they produce soaps with release of an energy in form of heat and this process is termed as Saponification. This property of dissolving of oil and grease makes a base a good cleaner.

Hence,the correct answer is B.

HIGH SCHOOL

Complete combustion of a 0.600-g sample of a compound in a bomb calorimeter releases 24.0 kJ of heat. The bomb calorimeter has a mass of 1.30 kg and a specific heat of 3.41 J/(gi°C). If the initial temperature of the calorimeter is 25.5°C, what is its final temperature? Use mc026-1.jpg. 30.9°C 34.5°C 44.0°C 51.5°C

Answers

Answer : The correct option is,

Explanation :

Formula used :

where,

= heat released = 24 KJ

= mass of bomb calorimeter = 1.30 Kg

= specific heat =

= final temperature = ?

= initial temperature =

Now put all the given values in the above formula, we get  the final temperature of the calorimeter.

Therefore, the final temperature of the calorimeter is,

Answer:

Final temperature is 30,9°C

Explanation:

A bomb calorimeter is an instrument that allows the determination of the heat of combustion of a reaction. The heat q is defined as:

q = C×m×ΔT (1)

Where:

C is specif heat of calorimeter (3,41 J/g°C)

m is mass (1,3kg ≡ 1300g)

And ΔT is final temperature - initial temperature (X-25,5°C) X is final temperature

And q is heat (24,0kJ ≡ 24000J)

Replacing in (1):

24000J = 3,41J/g°C×1300g×(X-25,5°C)

5,41 = X-25,5°C

25,5°C + 5,41 = X

30,91°C = X

Final temperature is 30,9°C

I hope it helps!

COLLEGE

Which of the following substances is considered to be a base? A. HCl B. HNO3 C. H2SO4 D. Ca(OH)2

Answers

Among the options given, Ca(OH)2 or calcium hydroxide is considered to be a base. Thus, the correct option for this question is D.

What do you mean by a base?

A base in chemistry is defined as a type of chemical substance that can significantly accept hydrogen ions in water and can neutralize an acid. Bases feel soapy or slippery on the skin in texture and they have the ability to turn certain dyes blue.

According to the context of this question, H2SO4 or sulphuric acid is the strongest acid along with HNO3 (nitric acid) and HCl (hydrochloric acid). An example of a base is sodium hydroxide. Basicity is measured on a scale called the pH scale.

Therefore, Ca(OH)2 or calcium hydroxide is considered to be a base. Thus, the correct option for this question is D.

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Among all of the choices listed, the only option that is a base would be the last one. As it is unique, whereby Hydrogen is not present in the front of the compound.

Bases also possess OH in their molecular formula.
HIGH SCHOOL

Geology belongs to which main category of science?

Answers

Geology belongs to the Earth Science category I believe. 
Geology belongs to the category Earth Science.
MIDDLE SCHOOL

• How do materials move
inside plants?

Answers

Answer:

It is a way for water, minerals, and sugars to move between the roots and leaves. Roots, stems, and leaves have two types of vascular tissues: Xylem: brings water and minerals from the roots to the stem and leaves. Phloem: brings sugar that is made in the leaves down to the rest of the plant.

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