Equal masses of steel wool are placed in four beakers. Equal amounts hydrochloric acid (HCI) are added to three beakers in the following concentrations: 0.5M, 1, 0M and 3.0 M. Water is added to the fourth beaker. Hydrochloric acid reacts with the metal in steel wool Which observation is most likely?

Answers

Answer 1

Answer: the steel wool in the 3.0 M HCl reacts fastest.

Explanation:


Related Questions

Look at the species name for each alien. How do you think these names were chosen?

plz answer

Answers

Complete question:

You will find the complete question in the attached files

Answer:

1)

Alienus quadlegicus:  Mouth opened and no armsAlienus hairicus: Mouth opened, hairyAlienus tritoothicus: Mouth opened, not hairyAlienus stripicus: Mouth not opened, hornsAlienus bloblicus:  Mouth not opened, No legsAlienus fuzzicus: Mouth not opened, Legs

2) Genus Alienus

3) Morphological characteristics of aliens are used to identify them and to name them.

Explanation:

1) The dichotomous keys give you information about the groups that are being differentiated to correctly identify them. All you need to do is follow the description of the organisms and the numbers where each description drives you. If you observed correctly the organism, you will reach the scientific name, or genus, or any other taxonomic group you are looking for.

2) Taxonomy is the study of different organisms, their classification into categories according to their morphological and molecular characteristics and their evolutionary relationships. A binomial name is assigned to each organism, composed of a genus and the epithet.  

Among all the categories where organisms are classified, we can find the genus, which includes many species that share some common characteristics that are used to group them together.  

In this example, Alienus is the genus of all these aliens species.

3) Morphological characteristics of aliens are used to identify them and to name them.

Alienus quadlegicus:  Four-legged alienAlienus hairicus: Hairy alien.Alienus tritoothicus: Alien with three teethAlienus stripicus: Alien with striped hornsAlienus bloblicus:  Alien with no shape. Shapeless massAlienus fuzzicus: Short fine-haired alien.

An air mass acquires the temperature and humidity of its source region.
True
False

Answers

True it won’t let me explain cuz it says oops something went wrong >:(

An air mass acquires the temperature and humidity of its source region is a true statement, an air mass is a substantial volume of air that contains both temperature and humidity.

What is an air mass?

As the name implies, an air mass is a substantial volume of air that contains both temperature and moisture. The temperature will change depending on where the air mass is located, for instance, the temperature will always be lower in the center of the air mass.

Similar to how air mass humidity fluctuates, air mass humidity will not change when air temperature decreases.

However, depending on the environment, it may either gain or lose water mass. Temperature and humidity may change at any time, but the pressure never does.

Therefore, air mass acquires the temperature and humidity of its source region is a true statement.

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This list of characteristics describes organisms in the ________.
Question options:

protists and animals kingdoms
animals kingdom only
protists and fungi kingdoms
protists kingdom only

Answers

Answer:

protists and animal kingdoms.

Explanation:

i just took a test and got this right.

Answer:

A

Explanation:

I filled this out with my Biology class.

Why do plants use gravity?

Answers

Answer:

Gravity perception is important to plants because they need to send their roots downwards towards water and nutrients and their shoots upwards towards light. Plants are known to detect gravity using statelets, which are small starch-filled packets that settle at the bottom of gravity-sensing cells

Explanation:

Hope this helps.

Color blindness is a recessive sex-linked human trait. If a color-blind father and a mother with normal color vision have a color-blind son, what must be the mother's genotype?​

Answers

Remember that most of the time, in biology class at least, the sex linked disorders are usually going to come on the “x” chromosome. Colorblindness does come on the “x” chromosome.

To solve, begin with a key, such as:
colorblind: c (since it’s recessive)
not colorblind: C

Remember that males have XY, and females have XX, also remember that sex linked traits are written as exponents, and sometimes as subscripts

The father is colorblind, so his genotype is X^cY

Now you must work backwards in a punnet square. Put the fathers genotype on one side of the square. You don’t know the mothers yet, so for now, just put her two x chromosomes. Remember that mom can only give an x to the baby, because that’s all she can possibly give. Since the child is a boy, Dad will give his “y” chromosome to the child.

If the child is colorblind, as the question states, then moms “x” chromosome that she gave the child must have had the recessive allele in order to give him colorblindness. So that means that mom carries the recessive allele. However, mom has normal vision, so she must have a dominant allele as well, otherwise she would be colorblind.

Moms genotype is X^C X^c

I know this is very long winded I’m sorry :(
But I do hope this helps!

Snow owls prey on lemmings in their arctic habitat, and their survival is closely linked to the abundance of lemmings. In years when there are many lemmings, snowy owls may raise a dozen babies. How might a scarcity of lemmings affect the snowy owl population?

Answers

With a scarcity of Lemmings, the Snow Owl population will most likely decrease due to a lack of food.

As you mentioned, the snow owls are linked with the lemmings. This is true of any predator-prey population model. If there aren't many lemmings (prey), then the owl population will go down. This is due to lack of food. The unlucky members will starve and die off. As the predator owl population decreases, the lemming population will go back up. This is because the lemmings aren't being eaten by the predators (as there are less owls to be eating the lemmings). Then as the lemming population goes up, so does the owl population.

As one population goes up, the other does too. This is until they reach the carrying capacity and the populations go down. This cycle repeats itself. It's quite common to find populations in flux all the time like this. Keep in mind that we're only focused on the food aspect and not other factors such as habitat. If the lemming habitat is severely compromised, then that will also affect the lemming population. To keep things relatively simple, we'll assume the habitat stays constant.

Side note: The common misconception is that lemmings jump off cliffs on purpose, and kill themselves, but this is a myth that was unfortunately spread around. Lemmings do not do this. If they did, then the species would have died off long ago.

Step 1- Investigative Question
What will happen if I submerge a raw egg in vinegar for 24 hours? (Will it
bounce if I drop it or will it crack?)
Explain - Is this question testable or no? Tell me why.
What are the variables in this question?
The variables in this question are apple
The independent variable is
The dependent variable is

Answers

Answer:

Eggshells are made of calcium carbonate. If you soak an egg in vinegar the eggshell will absorb the acid and break down, or dissolve. The calcium carbonate will become carbon dioxide gas, which will go into the air.

Explanation:

It will bounce.

I believe that it is testable because you can do it at home.

Independent variable is vinegar.

❗❗❗❗❗❗❗❗❗❗ help pls ASAP
How are fungi helpful to humans?

Question 7 options:

Can be eaten (yeast, truffles, mushrooms)


Damage crops causing corn smut, cotton root rot, wheat rust, and grain mold


Medicine (penicillin)


Both A and C

Answers

Answer:

A and C

Explanation:

they provide food and have helped with medicinal discoveries

Answer:

a c

Explanation:

Which of these decreases as greenhouse gas pollution increases?
A. Rate of ice-sheet melting
B. Ocean salinity
C. Ocean surface temperature
D. Sea levels

Answers

The answer should be ocean salinity as the ice sheet melting increases, sea levels rise and the temperature increases. Process of elimination.

The climate-changing gases present in the atmosphere are greenhouse gases. An increase in greenhouse gas decreases the salinity of the oceans and sea. Thus, option B is correct.  

What are greenhouse gases?

Greenhouse gases are the major factor contributing to global warming and climate change. They are present in the atmosphere and have increased with a rise in the level of pollution.

The greenhouse gases have an inverse effect on the salinity or the thermohaline circulation. The increased temperature affects the glaciers and results in the melting of the ice caps thereby increasing the water level and surface temperature.

The increased water level and temperature increase the evaporation rate and elimination along with the circulation rate of the water from the poles and equator resulting in decreased salinity.

Therefore, the greenhouse gases decrease salinity.

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The ultimate source of energy in an ecosystem is the
a. consumer
b. producer
c. sun
d. decomposer

Answers

Answer:

the sun

Explanation:

In most ecosystems, the ultimate source of all energy is the sun.

Answer:

C. Sun

Explanation:

Giving everything!!!!!!!!! Plzzzz help!!!!!!!!!!! ASAP!!
Most forms of vaccination consist of injecting a person with inactive viruses. How do the proteins from the inactive viruses protect the person from later infections by those viruses?

A. The proteins cause a mild infection that prevents the person’s body from responding to later infections.

B. The proteins bond with receptors on the cells of the person so that later active viruses cannot bind with them.

C. The proteins stimulate an immune response, which produces memory cells that can generate antibodies when new active viruses try to infect cells.

D. The proteins remain in the body and serve as a food source for later active viruses instead of feeding on the person’s tissues and causing the infection.

Answers

Answer:

C

Explanation:

Because when you get a vaccine the proteins and bacteria are working against  each other so when the doctor says its normal to run a low fever thats why.

In order for a dam to work, ______ must be present.
A) a windy field
B) a lot of heat to boil water
C) a lot of fast moving water
D) oil

Answers

c . i looked it up l o l

Matter and energy both can neither be created or destroyed
True or false
Please explain thank you!

Answers

Answer:

true

Explanation:

Both the initial and final substances are composed of atoms because all matter is composed of atoms. According to the law of conservation of matter, matter is neither created nor destroyed, so we must have the same number and type of atoms after the chemical change as were present before the chemical change.


Please help!!!!

Can someone please give a small description on these words based off of animals cell

Golgi body
Cell membrane
Centrosome
Nucleus
Vacuole
Mitochondrion

Answers

Answer:

1.A Golgi body, also known as a Golgi apparatus, is a cell organelle that helps process and package proteins and lipid molecules, especially proteins destined to be exported from the cell.

2.The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

3.The cytocenter or centrosome is a cellular organelle that is not surrounded by a membrane; ... " centrosome- related bodies " (CRBs for centrosome- related bodies) are often seen at ectopic sites.

4.The nucleus is a membrane-bound organelle that contains genetic material (DNA) of eukaryotic organisms. As such, it serves to maintain the integrity of the cell by facilitating transcription and replication processes. It's the largest organelle inside the cell taking up about a tenth of the entire cell volume.

5.A vacuole is a membrane-bound cell organelle. In animal cells, vacuoles are generally small and help sequester waste products.

6.power house of the cell

Explanation:

Golgi body modifies, packages, and transports proteins and lipids. The cell membrane is made of phospholipids, it is semi-permeable, and allows only small, non-polar particles to enter. Centrosomes are organelles that assist in cell division. The nucleus is where the cell is controlled. It contains the DNA of the cell. Vacuoles are organelles that “eat” and destroy potentially harmful, non belonging particles. It also helps control water concentration.

Please heeeeelp


Answer and I will give you brainiliest

Answers

it happens without conscious thought
I think it’s Because it happens without conscious thought

(ILL GIVE YOU BRAINLIEST HELP ASAP PLS, I GOT A COUPLE QUESTIONS ON MY PAGE)

Answers

It is B because I had this question and I chose B and it was right

19
1 point
The Endosymbiont Theory explains how the Golgi body is able to act in modifying proteins.
True
ОО
False

Answers

Answer:

Explanation:

This is true

I’m pretty sure it’s true

What is the violent shaking of Earth's crust as built-up energy is released.
O earthquake
O epicenter
O fault
O focus

Answers

earthquake it the answer

A 450 kg horse starts a running. If the horse is accelerating at 1.2 m/s2,

which force is closest to the net force acting on the vehicle?*

Answers

Answer:

Force of 540 Kgm/s^2 is closest to the net force acting on the vehicle.

Explanation:

Force is the change in momentum per unit time

This relationship is equivalent to product of mass and acceleration

Thus F = Mass * acceleration

Substituting the given values in above equation we get -

F = 450 Kg * 1.2 m/s^2

F = 540 Kgm/s^2

Describe how humans benefit from photosynthesis

Answers

Answer:

The energy we get from the food we eat originally came from plants, which absorbed energy from the sun. Photosynthesis is also important because of the oxygen it produces. They recycle the carbon dioxide we breathe out and turn it back into oxygen so that we never run out.

Explanation:

Answer:

Equally importantly, photosynthesis is the source of oxygen and also removes carbon dioxide from our atmosphere. Oxygen is required for cellular respiration, the process by which food is broken down into energy. Thus, human beings are also solely dependent on photosynthetic plants for their oxygen requirements.

Explanation:

Which of the following would be a good pair of plants to use for relay intercropping?


an early sprouting, tall corn and a late climbing bean

two early spring, low-growing bush pea varieties

an early sowing of tall corn, and a late sowing of a dwarf corn

an early sowing of lettuce and a late sowing of lettuce

Answers

Answer:

two early spring, low-growing bush pea varieties

Answer:

Two early spring, lowgrowing bush pea

Explanation:



What would happen with an increase of plants on earth?

Answers

Answer:

I don't think much would change more animals would have lot of food and we would have lot of air

The innate (non-specific immunity) immune system Select one:

A. is based on phagocytes and antimicrobials contained therein

B. kills bacteria according to the same principle as immunoglobulins

C. requires recognition of a surface epitope by immunoglobulins

D. None​

Answers

Answer: A. is based on phagocytes and antimicrobials contained therein

Explanation:

The innate immune system a person has is the one that they were born with to help them counter all foreign organisms as it views them as threats to the immune system.

It is based on phagocytes as well as natural antimicrobials that will immediately go into action once foreign organisms are detected in the body to eliminate any threats these organisms might pose.

Which of the following is NOT a function of fat in animals?
A. protection
B. energy storage
C. insulation
D. movement

Answers

Answer:

D. Movement.

Explanation:

D. Movement.

The answer is
D. Movement

Controls body movements such as walking and picking
up objects

Answers

Answer:

All of our body are controlled by the brain. One of the brain areas most involved in controlling these voluntary movements is the motor cortex.

• I had an experience with... It made me think about...

Answers

hello pls give me brainliest

Complete this food web by moving the organisms to the correct locations in the diagram. Arrows point in the direction that energy flows from one organism to another.

Answers

Answer:

1. Red-Tailed Hawk

2. Field Mouse

3. Bacteria

4. Grass

5.  Earthworm

Explanation:

I got this question wrong multiple times in Discover Ed - Relationships among Organisms, and so I got the answers.

Sorry I couldn't phrase why, but I am 100% sure this is the right answer, and if you want further information, please go on Discover Ed.
And please please don't report me...

Thank you,

Have a great day!

Please answer i am not having any motivation im very tired please answer giving brainliest look at photo and answer.

Answers

because the grand canyon was formed in the ocean and the ocean was filled with organisms

Which of the following is an example of how culture can help humans
survive?
A. Inventing tools can help humans survive in their environment.
B. Overusing resources can make a survival practice unsustainable.
O .
C. Developing different religions can lead to conflict among
societies.
D. Having opposable thumbs helps humans grasp objects.

Answers

Answer : A

Explanation:

Inventing tools can help humans survive in their environment. Therefore, option (A) is correct.

Why inventing tools help human survive?

Culture refers to the shared beliefs, values, practices, and knowledge that characterize a group or society. Humans have relied on culture to survive and thrive for thousands of years. Inventing tools is an example of how culture can help humans survive. By creating and using tools, humans are able to adapt to and manipulate their environment to meet their needs. For example, early humans used tools to hunt, gather food, and build shelters, which helped them survive in their environment.

Overusing resources can lead to unsustainability and environmental degradation, which can threaten human survival. Developing different religions can lead to conflict among societies and does not necessarily help humans survive. Having opposable thumbs is a physical adaptation that has helped humans develop complex motor skills, but it is not an example of how culture helps humans survive.

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NEED HELPPPPPPPPP

!!!!!!30 points!!!!!!

Answers

Answer:

Genotype Ratio: 1:4

Phenotype Ratio: 1:4

Explanation:

Tt x tt

So, it tells us that for sure the mother has 2 recessive alleles and the father has for sure at least 1 dominant allele and 1 recessive allele (we know this because the offspring can only have a recessive trait if the offspring has 2 recessives, this can only happen if the father has a dominant and a recessive allele). If you put this into the Punnett Square you should find that the probability of Tt is 50% and tt is also 50%.

this would make both the Genotype and the Phenotype 1:4

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