Chemistry Middle School

Acetic acid (CH3COOH) reacts with water to form the acetate ion and the hydronium ion:

Upper C upper H subscript c upper C upper O upper o upper H (a q) plus upper H subscript 2 upper o (l) double arrow upper C upper H subscript 3 upper C upper o upper O superscript minus (a q) plus upper H subscript 3 upper o superscript plus (a q).

At equilibrium, the concentration of CH3COOH is 2.0 × 10–1 M, the concentration of CH3COO– is
1.9 × 10–3 M, and the concentration of H3O+ is 1.9 × 10–3 M. What is the value of Keq for this reaction?

1.8 × 10–5

5.5 × 104

9.5 × 10–3

1.1 × 102

Answers

Answer 1

Answer:

A

Explanation:

Answer 2

Answer:

A: 1.8 × 10–5

Got it right on edge 2023

Acetic Acid (CH3COOH) Reacts With Water To Form The Acetate Ion And The Hydronium Ion:Upper C Upper H

Related Questions

What is the charge on the Cr in Cr2O72-

Answers

Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

In the dichromate ion, the oxidation number of chromium is+6. The sum of the oxidation numbers in Cr2O72-, a polyatomic ion, is -2, the charge of the ion.

what is matter and what are some thing that are living and nonliving

Answers

Answer:

Living beings and non-living things both follows the physical and chemical general principles, like the thermodynamic laws, and they are constituted both by atoms and molecules, the basis of the natural organization of all known matter on Earth.

Answer: Matter is anything that has mass or takes up space, something non living is a rock something living is a tree

Explanation:

Which tools do meteorologists use to help create weather forecasts? Choose ONE answer:

guesses
weather service maps
opinions from weather watchers
personal observations

Answers

Answer:

weather service maps

Explanation:

weather service maps

piece of roasted salted fish is put in a mouse trap. explainwhy the mouse comes to the trap

Answers

the mouse could have been scavenging for food and thought that it found some. It would unexpectedly walk into the trap because of how desperate it is for food, especially with suspected predators around.

Answer: Food

Explanation:

The rat smells the food or sees the food it goes towards the food to eat it.

What type of coal is the most efficient when burned as a fuel?

A. peat
B. bituminous
C. sub-bituminous
D. anthracite

Answers

D. Anthracite is the correct answer I’m 95% sure
Anthracite

ex: Anthracite coal is the hottest burning fuel in comparison to the most common ones in use. Environmentally cleaner than other fossil fuels. Due to its low sulfur content, Anthracite coal produces virtually no smoke or particulate emissions.

What is the main way viruses cause disease in the body
A. By feeding directly on your body parts
B. By using your body's cells to make new viruses
C. By absorbing nutrients from your bloodstream
D. By breaking down your body's cells for nutrients

What is the main way viruses cause disease in the bodyA. By feeding directly on your body partsB. By

Answers

I think the answer is B

Answer:

the answer is B

Explanation:

this is because viruses need to enter a host cell to start reproduce. they usually use your cell to create "virus making factories".

hope it helps

no problems

PLS I REALLY NEED HELP


If the relative positions of the sun and moon affect the ocean’s tides, why would it be helpful for sailors and other people who work on the ocean to understand patterns in the Earth-sun- moon system?

Answers

gravitational gradient fields add together constructively, leading to extra strong tides (high tide is extra high and low tide is extra low). This alignment happens when the moon is a new moon or a full moon, which occurs about every two weeks.
I mean I don’t really know scientifically, but if you think about it rationally, you can impose that the gravitational force can affect certain tides depending on the relativity. So if the earth is on its far orbit, furthest away from the sun, maybe the tide could change due to a weaker gravitational force. Although I am unsure.

If new crust is forming on the mid-ocean ridge, why doesn't the Earth get bigger?


pls helppppppp

Answers

Answer: The earth isn't getting any bigger because when  ocean crust subducts, or slides under, other pieces of Earth's crust the earth just makes more.

Explanation:

Answer:The earth isn't getting any bigger because when  ocean crust subducts, or slides under, other pieces of Earth's crust the earth just makes more.

Explanation:

11. Hay is made up of organic compounds. What are the main elements in many organic compounds?

Answers

The three elements that make up over 99 percent of organic molecules are carbon, hydrogen and oxygen. These three combine together to form almost all chemical structures needed for life, including carbohydrates, lipids and proteins.

Answer:

35

Explanation:

When the speed of the bottle is 2 m/s, the KE is kg m2/s2. When the speed of the bottle is 3 m/s, the KE is kg m2/s2. When the speed of the bottle is 4 m/s, the KE is kg m2/s2. When the speed of the bottle is 5 m/s, the KE is kg m2/s2. When the speed of the bottle is 6 m/s, the KE is kg m2/s2.
instructions
In this part of the experiment, you will be changing the speed of the bottle by dropping it from different heights. You will use the same mass, 0.250 kg, for each trial, so record this mass in Table B for each velocity. Then, calculate the expected kinetic energy (KE) at each velocity. Use the formula KE = mv2,
where m is the mass and v is the speed. Record your calculations in Table B of your Student Guide.

Answers

Answer:

Based on the given instructions, you need to calculate the expected kinetic energy (KE) at each velocity using the formula KE = mv^2, where m is the mass and v is the speed. The mass is given as 0.250 kg.

Table B: Calculation of Kinetic Energy (KE)

Table B: Calculation of Kinetic Energy (KE)

Speed (m/s)Mass (kg)KE (kg m^2/s^2)20.2500.50030.2500.75040.2501.00050.2501.25060.2501.500

To calculate the kinetic energy at each velocity, multiply the mass (0.250 kg) by the square of the velocity.

For example, when the speed of the bottle is 2 m/s: KE = (0.250 kg) * (2 m/s)^2 = 0.250 kg * 4 m^2/s^2 = 1.000 kg m^2/s^2

Perform similar calculations for the other velocities and record the results in Table B.

Answer:

Explanation:mass of the bottle in each case is M = 0.250 kg

now as per given speeds we can use the formula of kinetic energy to find it

1) when speed is 2 m/s

kinetic energy is given as

2) when speed is 3 m/s

kinetic energy is given as

3) when speed is 4 m/s

kinetic energy is given as

4) when speed is 5 m/s

kinetic energy is given as

5) when speed is 6 m/s

kinetic energy is given as

Explain how Saturated Solution can dissolve no more solute

Answers

Answer:

 saturated solution is a chemical solution containing the maximum concentration of a solute dissolved in the solvent. ​The additional solute will not dissolve in a saturated solution. The amount of solute that can be dissolved in a solvent to form a saturated solution depends on a variety of factors.

Explanation:

Answer:

When the solute equilibrium point is achieved and no more solute will dissolve, it is saturated.

here we go again.......

here we go again.......

Answers

Answer:

i think it might be C

sorry if it is wrong

I think C but I’m not positive.

Please draw a diagram of how a magnetic field works around a magnet. Please label.

Answers

This is the best picture I can find

Mark me Brainly
Please draw a diagram of how a magnetic field works around a magnet. Please label.

what is the goal of science??

Answers

There are three goals in science:1. Investigate and understand the natural world.2. Explain events in the natural world.3. Use those explanations to make predictions.Science seeks to increase man's knowledge and to use that knoledge to directly or indirectly benefit man.

The main goal of science has been building knowledge and understanding, regardless of its potential applications.

What is Science ?

The intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.

For example, investigating the chemical reactions that an organic compound undergoes in order to learn about its structure.

Therefore, The main goal of science has been building knowledge and understanding, regardless of its potential applications.

Learn more about Science here ;

https://brainly.com/question/25307184

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When a volcano erupts, particles of rock and ash are released into the atmosphere. After this, water droplets form around the rock and ash particles and fall to Earth as rain. The rainwater helps plants grow.

In this scenario, which spheres of Earth interact?

biosphere, cryosphere, hemisphere
cryosphere, geosphere, biosphere
geosphere, hydrosphere, biosphere
hydrosphere, cryosphere, geosphere

Answers

Following the scenario, the spheres of the earth that interacts would be the geosphere, the hydrosphere, and the biosphere.

Interaction among the spheres of the earth

Volcanic eruption emanates from the geosphere.

The formation of water droplets and rain as a result of the volcanic eruption involves the hydrosphere.

The induction of plant growth by rainwater involves an interaction between the hydrosphere and the biosphere. The plant represents life.

More on the different spheres of the earth can be found here: https://brainly.com/question/24215268

#SPJ5

Answer:

c

Explanation:

Explain why some gases are considered molecules but not compunds

Answers

Somes gases are considered molecules but not compounds because compounds are made up of atoms of different elements.

A molecule is made up of any two atoms together. A molecule consisting of atoms from various elements is referred to as a compound.

However, we can call all molecules compounds, but not all compounds molecules. Since hydrogen gas (H2) only contains one element, it is a molecule rather than a compound.

Two identical atoms can combine to form a molecule, as occurs when two oxygen atoms combine to form an oxygen molecule. All compounds, however, have two or more atoms of distinct kinds.

Example of molecules gases : Hydrogen gas (H2) Nitrogen gas (N2) Oxygen gas (O2) Chlorine gas (Cl2)

Example of compound gases : Ammonia NH3,

Methane CH4, Nitrous oxide N2O, Salt NaCl.

To know more about molecules & compounds click at https://brainly.com/question/25465587

Answer: Every combination of atoms is a molecule. A compound is a molecule made of atoms from different elements. All compounds are molecules, but not all molecules are compounds. Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element.

Explaination: All compounds are molecules, but not all molecules are compounds. That is because a molecule can be made up of two atoms of the same kind, as when two oxygen atoms bind together to make an oxygen molecule. However, all compounds are made up of two or more different types of atoms.

A chemical change occurs when two or more substances join to form new substances with new ______________ properties

Answers

Answer:

hope this helps!

Explanation:

In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed, the change is called a chemical change

Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.

What is common among elements in the same group?

What is common among elements in the same group?

Answers

Answer:elements are arranged in increasing atomic number from left to right

Explanation:


Answer:elements are arranged in increasing
atomic number from left to right

Describe in your own words, the different energy transformations that occur in a power plant.

Answers

if coal is being burned then there’s the heat energy then the burning coal turns into mechanical energy for the machines to start working then the generators turn the mechanical energy into electric energy.

Which of the following does NOT play a role in South Florida’s climate?


A. latitude
B. beach erosion
C. ocean currents
D. global wind patterns

Answers

Answer:

B

Explanation:

Latitude has impact on radiation, ocean currents partially determine temperature, and wind patterns influence temps. Elimination gives B.

two masses exerting force on each other is an example of what
A. heliocentric theory
B. Geocentric theory
C. Kepler's law
D. Universal law of gravitation

Answers

The answer is D universal law of gravitation

A student determined that a 50mL sample of an unknown liquid had a density of 1 g/mL. A 100mL sample of the same liquid would have a density of 2 g/mL. True or false

Answers

Answer: False

Explanation: The density of the liquid will always be the same, no matter how much of the liquid you have.

For example, the density of the water in a pool is the same density as the water in a small cup.

I need help

Roots of a tree breaking up the side walk
Mecanical OR Chemical

Flood water pounding against a canyon wall and breaking off rock
Mecanical OR Chemical

Acid from plant roots creates cracks in a driveway
Mecanical OR Chemical

Answers

Answer:

The first one is mechanical, second is chemical and, the third is chemical.

Explanation:

Well acid is a chemical, and water is a chemical compound. The roots are mechanical since it is not a chemical. Mechanical side of things is like you breaking up a sidewalk.

Answer:

one: mechanical, second: chemical and, third: chemical.

Explanation:

Jane is a graphic designer who is hired by several different companies to create logos and marketing designs. As part of her final project, she makes sure to deliver images in several resolutions. Why is the resolution of an image important? Why would several different versions of the same image be needed? What would happen if a low-resolution image was used on a large poster? Explain your reasoning.

Answers

Answer: Which substances are released during cellular respiration?

Use complete sentences to explain how the mass of oxygen is conserved during cellular respiration.

Explanation:

Answer:Use complete sentences to explain how the mass of oxygen is conserved during cellular respiration.

Which of the following statements fully describes what an object may do when it experiences unbalanced forces? Select the two best answers.

A. It may change directions.

B. It will move at a constant speed.

C. It may slow down.

D. It may slow down or speed up.

E. It will stay stationary.

Answers

Answer:b

Explanation:

The answer is A, and c

What part of the plant is fertilized with pollen to produce seeds?
Leaf

Ovule

Pistil

Stem

Answers

Answer:

Ovule

Explanation:

ovule is the answer

What do the forms of the highlighted limbs in the illustration tell you about their functions in each animal?

Answers

Where are the high lighted limbs and the illustrations

Answer: there is no image

Explanation:

Where does the force come from when a bumper car changes speed?

Answers

Answer:

Newton's second law

Explanation:

The rate of change of momentum of an object is equal to the net force acting on it. When bumper cars collide they push on each other. These pushes cause the momentum of each car to change.

The engine............

How to work out the relative mass of potassium? What is the calculation? ( explained very easily )

Answers

Answer:

39

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Relative Atomic Mass = Mass of one atom
———————————
(1/12)th Mass of one C12 atom

Which substances are the products of photosynthesis?

oxygen and water

glucose and oxygen

glucose and carbon dioxide

oxygen and carbon dioxide

Answers

Answer:

oxygen and carbon dioxide...

Which substances are the products of photosynthesis?

\(\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Answer⤵}}}}}∘\)

\(\sf\purple{Glucose\: and \:oxygen}\). ✔

.........................................................

More:-

❀ Photosynthesis is a process by which phototrophs convert light energy into chemical energy.

❀ The word “photosynthesis” is derîved from the Greek words "phos" (which means “light”) and "σύνθ-εóîς" (which means “combining together.”) And so it means “combining together with the help of light.”

❀ The process of photosynthesis occurs in green plants (the primary producers in a food chain) and a few other autotrophic organisms such as cyanobacteria, purple bacteria and green sulfur bacteria.

❀ Following is the photosynthesis formula:

☞︎︎︎ 6 CO2 + 6 H2O —> C6 H12 O6 (\(\sf\blue{glucose}\)) + 6 O2 ( \(\sf\pink{oxygen}\)).

........................................................

\(\bold{ \green{ \star{ \orange{Hope\:it\:helps.}}}}⋆\)

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