Which of the following is a extensive property of a bubble of air ? A. Temperature
B. Radius
C. Density
D. Percent oxygen

Answers

Answer 1

Answer:

Answer:

Correct answer is option B

Explanation:

Extensive propery:

The property which depends on the amount of matter is known as extensive properties of matter. It means if amount of a matter changes than its extensive properties will also changes for example if amount of matter is reduced than its volume will be reduced so volume is extensive property.

Extensive properies can be observed and measured.

Among the given options Radius is the option which depends on amount of matter it means if amount of matter will be large than the radius of air bubble will be large. So radius is an extensive property.

Answer 2

Answer:

An extensive property of a bubble of air from the given options is radius. (Option B).

What is an extensive property?

An extensive property is a property that depends on the amount or size of a substance or system.

For this question of a bubble of air, the radius (B) is an extensive property because it depends on the size or volume of the bubble. As we increase the size of the bubble, the radius will also increase.

The other properties listed, temperature (A), density (C), and percent oxygen (D), are not extensive properties. Temperature and percent oxygen are intensive properties because they do not depend on the size or amount of the substance; they are inherent properties of the air within the bubble. Density is also an intensive property because it describes the mass per unit volume, which remains constant regardless of the size of the bubble.

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Which is the correct expression for Keq when the chemical reaction is as follows:N2 + 3H2 2NH3.

Answers

Answer : The expression for equilibrium constant will be,

$K_(eq)=\fac{[NH_3]^2}{[N_2][H_2]^3}$

Explanation :

Equilibrium constant : It is defined as the number of ratio of the concentration between the products and the reactants at equilibrium.

The equilibrium reaction is,

$aX+bY\rightleftharpoons cW+dZ$

The general expression for equilibrium constant will be,

$K_(eq)=([X]^a[Y]^b)/([W]^c[Z]^d)$

The given balanced chemical reaction will be,

$N_2+3H_2\rightleftharpoons 2NH_3$

The expression for equilibrium constant will be,

$K_(eq)=([NH_3]^2)/([N_2][H_2]^3)$

The expression of the Keq is [NH3]2/([N2][H2]3). The common formula of reaction: ax+by=cz is Keq - [z]c/([x]a*[y]b). Remember to use a balanced chemical reaction.

Which one of the following is an example of an acid-base reaction?A. HCI + KOH --> H2O + KCl

B. 2CuS + 302 –>2CuO + 2SO2

C. S8 + 802 —> 8SO2

D. C3H8 + 5O2 —> 3CO2 + 4H2O

Answers

A ? cuz uhhh anything with hydrogen turns into acid? lol i’m not good at this

Answer:

Explanation:

Explain why ionic compounds are formed when a metal bonds with a nonmetal but covalent compounds are formed when two nonmetals bond.

Answers

Two nonmetals have enough electrons to share some for completing, so the bonds are covalent. A metal doesn't have that much, so it gives the few electrons on its outer layer more easily than a nonmetal (there must be a nonmetal to get them). This bond is ionic.
I'm still unaware of possible bonds between 2 metals (are there any? :) )

Final answer:

Ionic compounds form when a metal and nonmetal bond, as the metal loses its valence electrons which the nonmetal gains, resulting in an ionic bond. Covalent compounds form when two nonmetals bond, as they tend to share electrons allowing them to complete their valence shells resulting in a covalent bond.

Explanation:

The formation of ionic and covalent compounds depends on the elements involved and their properties. Metals, generally, have few valence (outer shell) electrons, while nonmetals have more. When a metal and nonmetal bond, the metal tends to lose its valence electrons, becoming a positively charged ion or cation, and the nonmetal gains these electrons, becoming a negatively charged ion or anion. This transfer of electrons results in an ionic bond.

On the other hand, when two nonmetals bond, they tend to share electrons because neither atom can completely overcome the other's attraction for electrons. These shared electrons allow them to complete their valence shells. This sharing of electrons results in a covalent bond.

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Conduction is the main method of heat flow in a metal.
a. True
b. False

Answers

In the process of transmission of heat by conduction, a transfer of thermal agitation of particles from a region of higher temperature to one of lower temperature. This is only possible in materials.

True . answer A

hope this helps!

Which of the following would you expect to have the highest value for entropy? CO2 (s)

H2O (s)

CO2 (g)

H2O (l)

Answers

Chemistry cool

CO2 (g) is your answer

hey there i see you need help well i am here to do just that

CO2 (g) is the correct answer

hope this helps

What is a chemical bond? A. The attraction of two atoms that holds the atoms together
B. A substance that's composed of atoms
C. A representation of chemical properties
D. The force that holds together the elements in a compound