Chemistry Middle School

PLEASE HELP ME ASAP!!! THIS IS DUE UNTIL 1:30 PM!!! Tell how many Elements are in this compound and tell what the Elements are. NaClOFeCoH

Answers

Answer 1

Answer: 13

Explanation: I got it right

Answer 2

Answer:

6 elements

Explanation:

each element Na, Cl, O, Fe, Co, H

Related Questions

Please help me por favor :'(

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More volume, takes longer to heat all the molecules.

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

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Answer:

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

What landscape feature contributes to the dryness of deserts?

A. The open, flat areas of a desert prevent clouds from forming.

B. Desert canyons collect all water and funnel it out of the desert.

C. Desert lakes absorb all the water.

D. Mountains block the winds that bring rain clouds.

Answers

Answer:

As I'm Not % Sure I Can Say C & D don't seem Right, Leaving A & B Having Me to Think the Answer is A (Hope I'm Right Good-Luck)

Explanation:

Answer: Mountains block the winds that bring rain clouds.

Explanation: By acting as obstacles to the flow of air masses, mountains contribute significantly to the dryness of deserts. Orographic lifting is a process that occurs when moist air is forced to ascend as it approaches a mountain range. The moisture in the air condenses and forms clouds as the air cools as it climbs. As a result, on the windward side of the mountains, the air loses a lot of its moisture as precipitation. The air has already lost a significant amount of moisture by the time it reaches the leeward side of the mountains, creating a rain shadow effect. On the leeward side of the mountains, this impact results in a dryer area that is often a desert. Consequently, the existence of mountains influences

?What statement best describes the arrangement of the atoms in an ethylene molecule?

Answers

Answer: Two electrons are shared between each hydrogen atom and the carbon atom bonded to it, and four electrons are shared between the carbon atoms.

Two electrons are shared between each hydrogen atom and the carbon atom bonded to it, and four electrons are shared between the carbon atoms.

What are all the breeds of dogs and how many breeds of dogs are there?

Answers

Answer:

In the United States alone, the AKC's dog breed list currently includes 190 dog breeds. Worldwide, the FCI lists 360 officially recognized breeds.

Explanation:

There are approximately 400 separate breeds of purebred dogs worldwide. A purebred dog is considered to be one whose genealogy is traceable for three generations within the same breed

There are currently more than 340 different breeds of dogs recognised throughout the world.

Greg wants to find out which shape of sail will make his model schooner sailboat go fast enough to win the race on Saturday. The wind is forecasted to be 10 -20 miles per hour on the day of the race. He builds a triangular shaped sail, a rhombic shaped sail, a circular shaped sail, and a rectangular shaped sail. The current sail on the boat is square in shape. Greg know he must use the same amount of surface area for each sail so he decides to use 100 square centimeters of canvas for each sail.

CategoryIndependent variable

CategoryDependent Variable

CategoryControl variable

Categoryconstant variables

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1234 is the same tho..

Water has a boiling point of 100 degrees Celsius, a melting point of 0 degrees Celsius, and a density of 1 g/cm. What is this a list of?

1. unimportant details

2. chemical properties

3. incorrect facts

4. physical properties

Answers

Answer:

Chemical properties

Explanation:

Water has a boiling point of 100°C or 373 KWater has melting point of 0°C or more exactly 273.16KThe density of water at 4°C is 1000kg/m^3

The answer is 1. Unimportant details

Three compounds that nitrogen and oxygen can form are NO, NO2, and N2O3. The law of multiple proportions tells you

A. the ratio of nitrogen to oxygen is always the same.
B. nitrogen combines with oxygen in small whole number mass ratios.
C. energy is conserved.
D. mass is conserved

Answers

I think it’s B because this law recognizes the fact that two elements may combine to form more than one product.

The postulation of the law of multiple proportions tells us that; Choice B. nitrogen combines with oxygen in small whole number mass ratios.

The law of Multiple Proportions

Law of multiple proportions states that if two elements form more than one compound, then the ratios of the masses of the second element which combine with a fixed mass of the first element will always be ratios of small whole numbers.

On this note, nitrogen combines with oxygen in small whole number mass ratios.

Read More on Law of Multiple Proportions:

https://brainly.com/question/24435494

How do you make an atom model? PLEASE HELP ANY IDEAS GUYS?

Answers

Answer:

If you are looking for like a drawing say less.

How do you make an atom model? PLEASE HELP ANY IDEAS GUYS?

If you are physically making one you would need to 1. Glue balls together to represent protons and neutrons. This is the nucleus. Try to arrange them in an alternating pattern. 2. Glue the nucleus to the center of the cardboard. 3. Determine how many rings you need for the electrons. Starting from the innermost ring, you can have up to two electrons in the first ring, up to eight in the second ring, up to 18 in the third ring and up to 32 in the fourth ring. 4. Glue the string around the nucleus to make the energy level rings. 5. Apply a few drops of glue to each ring. 6. Glue the electrons on the rings, spacing them evenly. Make sure you don’t exceed each rings maximum number of electrons. If you are trying to draw one then you could easily find one online

fill in the blanks. The celestial bodies in space move about in predictable paths called
____ . As a result, a planet is able to ____ around the Sun. Other objects in the solar system also orbit the Sun. These objects include ____ and comets.

Answers

Answer:

Magnetic fields, revolve, asteroids

The celestial bodies in space move about in predictable paths called ORBITS. As a result, a planet is able to REVOLVE around the Sun. Other objects in the solar system, also orbit the Sun. These objects include ASTEROIDS and comets.

Match these items.

1. imprint of plant or animal
original-remains fossil
2. undecayed plant or animal part
carbonized fossil
3. replaced by a mineral
petrified fossil
4. only carbon remains
cleavage
5. mountain
geology
6. from magma
metamorphic
7. from physical and chemical changes
igneous
8. sandstone
print fossil
9. helps identify rocks
landform
10. science of Earth
sedimentary

Answers

1. print fossil

2. carbonized fossil

3. petrified fossil

4. cleavage

5. landform

6. igneous

7. metamorphic

8. print fossil

9. geology

10. sedimentary

The print fossil, original-remains fossil, petrified fossil, carbonized fossil, landform, igneous, metamorphic, sedimentary, cleavage, and geology are the respective matches as given in the question.

Print fossil is imprint of plant or animal and basically known as fossil impression. Original-remains fossil comprises of the original tissues and parts of organism and undecayed plant or animal part. Petrified fossil is replaced by a mineral. Carbonized fossil is only carbon remains. Landform is a mountain. Igneous is from magma.

Metamorphic is from physical and chemical changes. Sedimentary rocks are sandstone. Cleavage helps to identify rocks. Geology is the study of science of earth.

Learn more about rocks and fossils:

brainly.com/question/2168243

Which photographs show an object in orbit? Explain your answer.

Answers

Last picture, because that ring explains something orbiting it.

Answer:

the 3rd image

Explanation:

it is the 3rd image bcuz the third image shows an object or a body moving around a particular body of object

please answer this questions!!!

Answers

I. should be 2 and ii. Should be 6 Nd part 2 of it should be 8

1. The charge of the nucleus of element “X” is 8+
The nucleus of element “X” is pictured to have 8 protons and 8 neutrons.
The nucleus always has a positive charge based on the number of protons in it.
Each proton has a charge of +1. There are 8 protons, so the charge of the nucleus is +8.
Neutrons have no charge (also called a neutral charge) so the number of neutrons will not affect the charge of the nucleus.

2. The electrical charge of element “X” is -2 if two electrons are added to its valance shell.
Each electron has a charge of -1. There are 8 electrons in the photo and we are adding 2, which is a total of 10 electrons. This means the electrons have a total charge of -10.
A simple way to find the overall charge of an atom is to subtract the number of electrons from the number of protons.
8-10=-2
The 8 positive protons and 8 negative electrons cancel each other’s charges, leaving the atom with the charge of two electrons, 2-.

I hope I explained this well, feel free to ask any questions! Have a good day.

What is NOT true about genes and chromosomes?

Genese are located on chromosomes

Chromosomes are in the nucleus

A single chromosome can contain hundreds of genes

All of these are true

Answers

Let us go option by option :

1) Genes are located in chromosomes. TRUE

Chromosomes are in cell nucleus. A chromosome contains hundreds and thousands of genes. A normal have 23 pairs of chromosomes, and a total of 46.

2) Chromosomes are the in nucleus.

TRUE

Chromosome is structure found in nucleus of the cell. It is made up of protein and DNA.

3) A single Chromosome can contain hundreds of genes.

TRUE

single Chromosome can contain hundreds of tgenes.

4) All of the above

TRUE

As all the statements above are true. The correct option is 4.

Answer:

all of them are true

Explanation:

this is because chromosomes contain genetic materials and it is present in the nucleus.
Therefore, the correct option is 4) all of these are true

no problem

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.

Silicon (Si) and Germanium (Ge) are:

Answers

They are elements and in rhw sane colum

Non metals
Non metals are not metals if that makes since

Which is a physical change?

using electricity to break down water into hydrogen and oxygen

formation of rust on a metal fence

turning on a gas burner on a stove

the evaporation of water into water vapor

Answers

Answer:

Hello how are you doing my name is naitik your answer is c because it can be reversed I hope it helps

Chemical changes:
Formation of rust on a metal fence

balance: C3H8O2 = CO2H2O

Answers

Answer: Balance the following equation: C3H8 + O2 ---> CO2 + H2O

C3H8+O2—> CO2+H2O is the answer

Infer How do you think these bones are involved in a whale’s movement?

Answers

I think that the bones involved in a whales movement help there tail move so they can swim

By keeping the muscle from flailing around and add support and stability when it moves its body,

help pls i will give brainlest

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Answer: its 5ft tall and 12 inches

Explanation:

The answer is 5 foot 12 inches

Please help, I’ll give brainliest!

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Answer:

the coefficient of NO3 is going to be 2

Explanation:

Cu+2NO3−+2H2O→Cu2++2NO2+4OH−

The coefficient of NO3 will be 1

HI HELP ONLY DO THE 2nd ONE!

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I would say they design and build things.

Construct and design

Give at least 3 examples of effects of weathering on the planet’s surface.

Answers

Answer:

earth

Explanation:

weathering it effects are earth plants becasuse we have to save are own earth surface.

The effects of weathering disintegrate and alter mineral and rocks near or at the earth's surface. This shapes the earth's surface through such processes as wind and rain erosion or cracks caused by freezing and thawing. Each process has a distinct effect on rocks and minerals

can radiation carry thermal energy from object to object?

Answers

Answer:

Radiation is the transfer of thermal energy by waves that can travel through empty space. When the waves reach objects, they transfer thermal energy to the objects.

Yes it can carry thermal energy from one object to the other because of the explanation above !

can copper block be separated? why or why not?
Is this considered a pure substance or a mixture?

Answers

No, a copper block cannot be separated because it is made of only one type of matter. It is considered a pure substance because it is only made of one type of matter, and mixtures are made up of two or more substances.

No, a copper block cannot be separated.

A copper block cannot be separated because it is made up of only copper atoms which are only one type of molecule. It is a tightly bound structure of copper atoms.

A pure substance means a substance that is free from any kind of mixture and contains only one kind of particle are pure substances. A mixture is composed of one or more pure substances in different compositions. So a copper block is a pure substance and not a mixture.

Learn more about pure substances and mixtures:

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When using the absolute method to assess muscular endurance, you should adjust the weight according to each individual's strength ability.

Please select the best answer from the choices provided.

T
F

Answers

I’m pretty sure it’s true I’m not 100% sure tho

It’s true!!!!!!!!!!!

Bonjour, j'espère que vous allez bien, j'ai un devoir maison à faire en chimie, je suis en 4ème . Ma question est: Qui a découvert l'hydrogène? En quelle année?Comment?+ citer deux propriétés de l'hydrogène, les utilisations de cet élément au quotidien.

Answers

Wikipedia Article

Hydrogen is the chemical element with the symbol H and atomic number 1. Hydrogen is the lightest element. At standard conditions hydrogen is a gas of diatomic molecules having the formula H2. It is colorless, odorless, non-toxic, and highly combustible. Hydrogen is the most abundant chemical substance in the universe, constituting roughly 75% of all normal matter.[8][note 1] Stars such as the Sun are mainly composed of hydrogen in the plasma state. Most of the hydrogen on Earth exists in molecular forms such as water and organic compounds. For the most common isotope of hydrogen (symbol 1H) each atom has one proton, one electron, and no neutrons.

In the early universe, the formation of protons, the nuclei of hydrogen, occurred during the first second after the Big Bang. The emergence of neutral hydrogen atoms throughout the universe occurred about 370,000 years later during the recombination epoch, when the plasma had cooled enough for electrons to remain bound to protons.[9]

Hydrogen is nonmetallic, except at extremely high pressures, and readily forms a single covalent bond with most nonmetallic elements, forming compounds such as water and nearly all organic compounds. Hydrogen plays a particularly important role in acid–base reactions because these reactions usually involve the exchange of protons between soluble molecules. In ionic compounds, hydrogen can take the form of a negative charge (i.e., anion) where it is known as a hydride, or as a positively charged (i.e., cation) species denoted by the symbol H+. The H+ cation is simply a proton (symbol p) but its behavior in aqueous solutions and in ionic compounds involves screening of its electric charge by nearby polar molecules or anions. Because hydrogen is the only neutral atom for which the Schrödinger equation can be solved analytically,[10] the study of its energetics and chemical bonding has played a key role in the development of quantum mechanics.

Explanation:

What the one on top said

Which material should the engineer choose if he wants the filling design to be durable and attach to the natural tooth?
A. composite
B. silver
C. gold
D. porcelain

Answers

A. Composite is the material that the engineer should choose if he wants the filling design to be durable and attach to the natural tooth. Composite is a tooth-colored material made of plastic and glass that is used to fill cavities and repair other dental damage. It is a durable and strong material that can bond well with the natural tooth, providing a natural appearance and long-lasting results. Silver, gold, and porcelain are also commonly used dental filling materials, but they may not bond as well to the natural tooth or offer the same level of durability and strength as composite.

The answer is composite A

Is this right?
...........

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Yes u are very right GOODLUCK!

Plz help... idk wut to do!!!!!!!!

Answers

Observation: The man is walking his dog.

Interference: The dog must have saw something and started chasing after it, resulting in the owner being dragged along.

Observation: The man is walking his dog.

Interference: The dog must have saw something and started chasing after it, resulting in the owner being dragged along.

HOPE IT HELPS

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