CHEMISTRY HIGH SCHOOL

Write the balanced molecular and net ionic equations for each of the following neutralization reactions. (a) Aqueous acetic acid (HC2H3O2) is neutralized by aqueous barium hydroxide.

(b) Solid chromium(III) hydroxide reacts with nitrous acid.

(c) Aqueous nitric acid and aqueous ammonia react.

Answers

Answer 1
Answer: The balanced molecular and net ionic equations for each of the following neutralization reactions are:

(a) Aqueous acetic acid (HC2H3O2) is neutralized by aqueous barium hydroxide.
2HC2H3O2 + Ba(OH)2 -> Ba(CH3COO)2 + 2H2O

(b) Solid chromium(III) hydroxide reacts with nitrous acid.
Cr(OH)3 + 3HNO2 -> Cr(NO2)3 + 3H2O

(c) Aqueous nitric acid and aqueous ammonia react.
HNO3 + NH3 -> NH4+ + NO3-

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For each element in the table below, use the Gizmo to find the number of valence electrons and the list thevalence based on the Lewis diagram. Then find the sum of these numbers.


IF SOMEONE COULD JUST HELP ME OR EXPLAIN HOW TO DO IT PLEASE! THANK YOU

Answers

Answer:

Explanation:

not sure if this is totally correct but checked with classmates and this seems to be around what most got

Answer:

It's funny cause i'm doing the same exact thing as you.

Explanation:

You need to go to the Gizmo, and it explains everything. But When you're looking at "Valence Electrons" thats how many "dots" (electrons) there are on the outermost circle, so Fluorine has 7 Valence Electrons.   To find the valency, you need to first identify the Valence Electrons. Fluorine has 7 valence electrons, and it would be a lot easier for this atom to gain an electron, rather than lose 7. So 8-7 is 1, meaning the Valency of Fluorine will be 1. For the sum, just add the total number, so 7+1 is 8, so the sum of Fluorine will be 8. This is confusing, so I'm sorry if this doesn't make sense.

When light waves hit ice, most of them bounce off and radiate back into space. Because of this, ice is best described as which kind of surface? reflective absorbent dense rough

Answers

The bouncing back of light waves observed when light waves hit ice and most of them bounce off and radiate back into space is called reflection.

What are light waves?

Light waves are a form of waves which produces visible sensitization of the eyes

Light waves have properties of waves such as:

  • reflection
  • refraction
  • diffraction
  • interference, etc.

When light waves hit ice, most of them bounce off and radiate back into space.

This property of light waves is known as reflection.

Learn more about reflection of light waves at: brainly.com/question/1191238

When light waves hit ice, most of them bounce off and radiate back into space, hence, ice is best described as a reflective surface.

What is a Reflective surface?

A reflective surface is one which can cause incident light to bounce back (reflection).

According to this question, when light waves hit ice, most of them bounce off and radiate back into space. This means that most of the incident lightreflects off the ice surface.

Therefore, the ice surface is best described as a reflective surface.

Learn more about reflection at: brainly.com/question/8553652

Once released, acetylcholine is degraded by extracellular enzymes into what product(s)?A) acetate + choline
B) acetyl CoA + choline
C) methylcholine + acetate
D) choline only
E) acetate only

Answers

Final Answer:

Once released, acetylcholine is degraded by extracellular enzymes into acetate + choline. Option A is the correct answer.

Explanation:

Acetylcholine (ACh) is a neurotransmitter responsible for transmitting signals across synapses in the nervous system. Once it is released into the synaptic cleft, acetylcholine is rapidly broken down by the enzyme acetylcholinesterase (AChE). The enzymatic degradation of acetylcholine by AChE results in the hydrolysis of the acetyl group, leading to the formation of acetate and choline.

Acetate is a small molecule that is easily cleared from the synaptic cleft, while choline can be taken up by the presynaptic neuron to be reused for the synthesis of new acetylcholine molecules. This degradation process is essential for terminating the signal transmission and preventing continuous stimulation of the postsynapticneuron.

Option A is the correct answer.

You can learn more about acetylcholine  at

brainly.com/question/27960161

#SPJ11
It’s acetate + choline

The tendency of an element to react is closely related toa. its atomic mass.
b. attractions between its atoms.
c. the number of valence electrons in atoms of the element.
d. the ratio of protons to neutrons in atoms of the element

Answers

The tendency  of an element  to react  is closely  related to  the number  of valence   electrons in atoms of the element (answer  C).


   Explanation

Valence  electrons  are outer  shell  electrons  of an atom.They govern the bonding   behavior  of  an element.


 when element react  to form compound, valence  electron  are involved.

Valence electrons  are involved in a reaction either by sharing  among   atoms or may be  transferred  from one  atom  to another.

For example in  formation  of NaCl bond there  is transfer of  valence electron between  Na  and Cl. Na  donate 1 valence electron  while Cl accept 1 electron to form NaCl
Answer: c. the number of valence electrons in atoms of the element

The valence electrons determine how it would bond and if it would react.

If 2a=3b and a=6 then b=

Answers

then b is 4

2a=3b since a=6

2x6=3b

12=3b

b=12/3

b=4

Answer:

b=4

Explanation:

2a=3b

2a=2*6

2*6=12

2a=12

12=3b

12/3=4

b=4

What is the equilibrium expression for this reaction?

Answers

Answer:

B

Explanation:

The equilibrium expression is

[products]/[reactants] and each is raised to its molar coefficient.

So:

[H2}^2[O2]/[H2O]^2
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