CHEMISTRY HIGH SCHOOL

What is a balanced equation for the neutralization of these two compounds? HCl
Ca(OH)2

Answers

Answer 1
Answer:

In order to balance this, you have to count each element where the elements in the reactants side and the product side should have equal number of molecules. The balanced reaction is as follows:


2HCl + Ca(OH)2 = CaCl2 + 2H2O

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A yellow luminous flame is produced when an insufficient amount of oxygen is supplied. This flame should not be used when heating because it will coat glassware with black soot. What element is this made from? Answer with the correct elemental symbol. It will be case sensitive.

Answers

Soot is created when burning happens incompletely, because there was an insufficient amount of oxygen supplied. As soot is made from carbon particles, the chemical symbol will be C, for carbon.

Which term best describes the stored energy based on the position or chemical composition of an object?a. kinetic energy
b. potential energy
c. activation energy
d. thermodynamic energy

Answers

Answer: Potential Energy

Explanation:

The term that best describes the stored energy based on the position or chemical composition of an object is its potential energy. It is the energy possessed by a body due to its virtue of its position. Any body at rest possesses this energy because they are in one position (not moving).

An object thrown up possesses potential energy at its maximum height before falling under gravity because the object is at rest at the maximum height.
Stored energy is described as potential energy

20 Which term is defined as a measure of the disorder of a system?(1) heat (3) kinetic energy
(2) entropy (4) activation energy

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Entropy is the term defined as a measure of the disorder of a system. This occurs mainly when the thermal energy is not available for the mechanical things.
Heat is a measure of energy in a medium
Kinetic energy is a measure of energy in an object that's resulting in movement
Activation energy is the amount of energy required to start a chemical reaction
Entropy is a measure of disorder in a system
The answer is Entropy

The melting of gold is a physical change.why?

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Because when a matter melts (or generally speaking, changes phases) its chemical structure does not change. By change of chemical structure I mean, reaction. When a matter melts it does not react with another one. It does not, give or take electrons to another matter or it does not share with them.
Melting gold can be reversed. Physical changes are ones that can be reversed, like bending a paperclip or getting whacked with a hammer and getting a dent. Chemical changes can't be reversed: like burning wood, or baking bread.

No one's even answering, so i'll just uh leave this here

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Answer:

answering what???

Explanation:

Answer:

I answered

Explanation:

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.
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