Help out please????

Answers

Answer 1

Answer:

B. X= Elements, Y= Compounds

Explanation:

An element is a substance that is made up of only one type of atom. The atoms of an element can combine together chemically to form a molecule but can still exist as an individual atom e.g. Hydrogen atom; H can form molecule H2. Since only one atom makes up an element, its electrons act independently.

Compounds, on the other hand, are substances that are made up of more than one type of atom chemically combined. A compound can only exist as a molecule because it always contains more than one atom bonded together. However, since more than one atom are involved in the chemical bond that holds them together, electrons are shared with other atoms. Example of a compound is H20 containing atoms of hydrogen and oxygen that are chemically combined.

Related Questions

How is space like a vacuum?

Answers

The vacuum of outer space is not caused by the expansion of the universe, but is caused by gravity. ... There would still be things like vacuum fluctuations, gravity, and dark matter, which can't be sucked out. With that said, outer space is very close to empty compared to earth's atmosphere.

a. Identify the type of reaction shown:

Li + CaCl2 ---> LiCl + Ca

Answers

Answer:

single-replacement reactions

Explanation:

A single-replacement reaction is defined as a chemical reaction in which one strong element replace the other weak element.

The given chemical equation Li + CaCl2 ---> LiCl + Ca is an example of single-replacement reactions in which Lithium (Li) is stronger than Calcium (Ca) and replaces calcium to form bond with Chloride.

Hence, the correct answer is "single-replacement reactions".

As one object gets closer to another object , the force of gravity will increase ......

True or false

Answers

Answer:

true

Explanation:

hope that helped!!

The answer is true to the question asked

Whats the correct answer ??

Answers

Answer:

creo que es R no se puede ser

Creo que es r no she Puebla

D. conduction and induction
8. Which phrase describes grounding?
A. charging an object by polarization
B. providing a safe path for electrons to flow
C. changing a substance from a conductor to an insulator
D. using a device that prevents the flow of electric current

Answers

The answer that you are looking for is

Answer:

Explanation:

using a device that prevent the flow of electric current.

This is your answer because it describes it

how does a drupe fruit differ from a hesperidum fruit.

Answers

Answer:

Explanation:

Answer:

Fleshy Fruits: All of most of the ovary wall (pericarp) is soft or fleshy at maturity. ... partitions, juicy seed vesicles, and a leathery exocarp similar to a hesperidium. ... This is a very common dry fruit found in many different plant families.

Explanation:

What is the process where plants make seeds that grow into new plants

Answers

This Process is called fertilization

Answer:

Plant fertilization

Explanation:

Hope this helps:) Have a great day

Please give Brainliest if could

If you are given 4.38g of a metal and this is reacted with air to produce a metal oxide weighing 5.18g. What is the Metal?

Answers

Answer:

Magnesium

Explanation:

Magnesium reacts with air (oxygen) to form metal oxide.

Draw the Lewis structure for AB4

Answers

Look it up that’s what I did

Hope this really helps you

What is the chemical formula for Tetrasulfur pentoxide?

Answers

Answer:

S 4 O 5

Explanation:

the 4 and 5 are little

True or False: Photosynthesis can happen anytime, regardless of the amount of reactants present or the presence of sunlight.

Answers

the answer is false .

Answer:

This is false

Explanation:

Im in bio and we just learned this lol

How many grams of silver are present in 15.0 g of silver sulfate?

Answers

Answer:

4676.985 . grams of silver present in 15.0g of silver sulfate

If u have 10 moles of C2H2 how many mole of O2 would you need

Answers

Answer:

i dont know04487448700

Convert 0.6330 mol of Na3PO4 to grams. Show the unit analysis by inserting the correct components into their unit- factor slots.
(see picture)

Answers

Answer:

No of moles = mass in gram / molar mass

Mass in gram = no of moles× molar mass

Mass in gram = 0.6330× 163.94

103.77 gram

Explanation:

LINKING IN
TECHNICAL OBJECTS
1 a) What is linking?

Answers

Answer:

A link is a fastening unit that attaches two parts of an object together

Different types of links have different characteristics

Answer:

Linking is the process of combining all the component object files. The linker determines where the code will reside in memory and how control will transfer between the components.

Limonene is an oil from oranges and lemons. Click on all the carbon

atoms its structures that have a trigonal planar molecular geometry.

Answers

Answer:

See explanation

Explanation:

Limonene is an oil from oranges and lemons. Its structure has been shown in the image attached to this answer.

There are two different groups of carbon atoms in limonene. One group of carbon atoms are sp2 hybridized while the other group are sp3 hybridized. The group of carbon atoms that are sp2 hybridized have a trigonal planar geometry and have been accurately labeled in the image attached while the carbon atoms that are sp3 hybridized were also labelled and have a tetrahedral geometry.

Hence in limonene, there are trigonal planar and tetrahedral carbon atoms.

I NEED HELP HERE PLEASE !!!

A gas has a volume of 4 liters at 3 atm. To expand the volume to 7000 ml, what the new pressure
(in atm) have to be?

Answers

Answer:

Gas it too expensive I need to get a job. I have no money to use at the atm

Explanation:

if your car is on 7000 ml it has issues and you need to take it to a mechanic.

how many moles are in 425g of KNO3?

Answers

Answer:

The answer is 101.1032

Explanation:

A CANDLE WILL STAY LIT INSIDE THE SPACE SHUTTLE WHEN IT IS ON THE LAUNCH PAD, BUT NOT WHEN IT IS IN ORBIT. WHY?

Answers

Answer:

because there is no oxygen in space for it to burn

because all fire need oxygen to burn

Explanation:

The following diagram shows a view of earth . What do the arrows represent

Answers

Answer:

how the earth rotates

Explanation:

Answer:

The Diagram shows Earth's rotation! ^^

Explanation:

Orbit and revolution is when the Earth goes around the sun and I'm sure it's not seasons because seasons isn't a movement of Earth.

2) Check all that apply.
What are the three major groups of elements?

Answers

Answer:

metals, nonmetals and metalloids

Explanation:

1. Metals

2. Nonmetals

3. Metalloids

2.What are the 3 effects of acid rain..?

Answers

Answer:

1) Damages soil and trees.

2) Makes holes in statues and buildings.

3) Pollutes rivers and lakes.

Answer:

It can harm animals underwater and on land

It has an effects on trees, freshwaters, and soils destroy insects and aquatic life-forms, and weathering stone buildings and sculptures, as well as impacts on human health.

Explanation:

I got it from a video. Hopefully, this helps.

What is the best color? Personally I think its purple.

Answers

For me sunset orange is the best color, it’s a very peaceful and calm color

purple used to be mine as well. Now it’s red since my whole family is associated with the notorious street gang called the“bloods”.

If 20 hits equal 1 web 1 futz equal 2 geese 10 webs equal to 1 futz How many gits are equal to 5gews?

Answers

Answer:

500 hits

Explanation:

If 20 hits equal 1 web 1 futz equal 2 geese 10 webs equal to 1 futz How many hits are equal to 5 geese?

Solution:

Given that:

20 hits = 1 web, 1 futz = 2 geese; 10 webs = 1 futz

10 webs = 1 futz; hence:

1 web = 1 web * 1 futz / 10 webs = 0.1 futz

1 web = 0.1 futz

1 futz = 2 geese; hence:

0.1 futz = 0.1 futz * 2 geese / 1 futz

0.1 futz = 0.2 geese

Therefore, 1 web = 0.1 futz = 0.2 geese

1 web = 0.2 geese

This means that 20 hits = 1 web = 0.2 geese

20 hits = 0.2 geese

5 geese = 5 geese * 20 hits / 0.2 geese

5 geese = 500 hits

Pure metals are _____.

used less often than alloys

are more resistant to corrosion than alloys

used more often than alloys

harder than alloys

Answers

Answer:

Pure metals are those metals that have not been alloyed with other metallic elements; commercially pure metals are 99% pure minimum.

Explanation:

One day on her walk home from school, Leann noticed some rust on an old car.

She remembered that chemical equations can summarize what happens in a chemical reaction. What is the name of the two parts found on the left side of the equation below?

4 Fe + 3O2 → 2Fe2O3

Answers

Answer:

Iron and Oxygen

Explanation:

Fe is Iron and O2 is Oxygen

Zora wants to dissolve a solute in a solvent quickly. Which best describes what she should do?

decrease the pressure
decrease the surface area
shake it repeatedly
place in a refrigerator

Answers

Answer:

C shake it repeatedly

Explanation:

i think thats the answer if not sorry hope it helps you.

Answer:

Explanation:

Draw a physical model that shows the reaction of zinc metal and hydrochloric acid (hydrogen chloride).

Zinc + Hydrochloric Acid Zinc Chloride and Hydrogen Gas
Zn + 2HCI - ZnCl2 + H2

“Be sure to label your model to clearly show how you are representing the atoms, how they are rearranged and
that mass is conserved in the reaction.”

If anyone could maybe send me a drawing it’ll be so appreciated! God bless you all :)

Answers

Answer:

Zinc + Hydrochloric Acid Zinc Chloride and Hydrogen Gas

Zn + 2HCI - ZnCl2 + H2

Explanation:

Be sure to label your model to clearly show how you are representing the atoms

A student did an investigation to determine the effect the amount of air would have on plant growth. She planted identical
plants in 4 separate closed containers with different volumes of air. She measured the height of the plants after they had
grown for 3 weeks.
What is the dependent (responding) variable in her investigation?

Answers

Answer:

Explanation:

The responding variable always is measured against the variable that you have control over.

In this case, you have control over the volume of air.

The responding variable is the amount the plant has grown. This would be a good long term experiment to try for a science fair or just because you might be interested. It's a good simple idea.

What is the mass of 1.9 x 10^22 molecules of CaCO3?

Answers

Answer:

3.2 g CaCO₃

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Reading a Periodic TableAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

1.9 × 10²² molecules CaCO₃

Step 2: Identify Conversions

Avogadro's Number

[PT] Molar Mass of Ca - 40.08 g/mol

[PT] Molar Mass of C - 12.01 g/mol

[PT] Molar Mass of O - 16.00 g/mol

Molar Mass of CaCO₃ - 40.08 + 12.01 + 3(16.00) = 100.09 g/mol

Step 3: Convert

Set up: [tex]\displaystyle 1.9 \cdot 10^{22} \ molecules \ CaCO_3(\frac{1 \ mol \ CaCO_3}{6.022 \cdot 10^{23} \ molecules \ CaCO_3})(\frac{100.09 \ g \ CaCO_3}{1 \ mol \ CaCO_3})[/tex]Multiply/Divide: [tex]\displaystyle 3.15794 \ g \ CaCO_3[/tex]

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

3.15794 g CaCO₃ ≈ 3.2 g CaCO₃

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I need help with math Write as an algebraic expression. 1. the sum of m and 8 Can someone pleaseeee help and if youre correct Ill give u brainlist! A utopia world can be defined as an imagined place or state of things in which everything is perfect. You will be given 15 minutes to write a utopian short story and then share with the class. which gas is used in flying balloons ? How much water is in a empty glass that is 10 centimeters high and has a diameter of 5 cm Prove this:cot 75 + cot 15=4 Can someone please help me with b c and d? Fill in the blank with the Spanish word that best completes the following sentence. Una manzana es O una carne o una bebida o una fruta o una verdura Mark this and retum Save and Exit Which of the following are the possible allele combinations from the gametes of an organism with the genotype of AaBb?AAB, onlyBAB and ab, onlyAa and Bb, onlyDAB, Ab, aB, and ab Please help me on this for brainliest and a cookie Where is the verb in We like to sing, dance, and play. An hour before showtime only 105 people have a ride for a concert according to sales 95% of the people have yet to arrive how many tickets were sold for the concert explain which factor caused many Irish immigrants to come to the United States in the 19th century? Which is an example of simile Implement the ArrayMethod application containing an array that stores eight integers. The application should call the following five methods: 1. display - should display all the integers 2. displayReverse - should display all the integers in reverse order 3. displaySum - should display the sum of the integers 4. displayLessThan - should display all values less than a limiting argument 5. displayHigherThanAverage - should display all values that are higher than the calculated average value. 1.During parkour, a person leaps at a wall and performs a flip. What must they do to changedirections?6 who was the first president PLEASE HELP IN ONE MINUTE WILL MARK BRAINLIST 3.What is the meaning of *.VBP.