An atom of barium has the atomic symbol shown below. Which statement is FALSE regarding this atom of barium?

Answer:

I think that volumic mass is like weight of an object, or like the space it takes up??

Explanation:

Have A Wonderful Day !!

Answer:

18.3%

Explanation:

Add the numbers together, and then take the number of grams of the substance, in this case copper, not coppper lol. divide the .45 by 2.45 to get 18.3

Answer:  [tex]6.047\times 10^{23}[/tex] atoms in 1.004 mol of arsenic

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.

To calculate the atoms, we use the equation:

[tex]\text{Number of moles}=\frac{\text{Given atoms}}{\text {avogadro's number}}[/tex]

[tex]1.004=\frac{x}{6.023\times 10^{23}}[/tex]

[tex]x=1.004\times 6.023\times 10^{23}=6.047\times 10^{23}[/tex]

Thus there are [tex]6.047\times 10^{23}[/tex] atoms in 1.004 mol of arsenic

Answer:

B: It is extremely reactive

Explanation:

Potassium metal is also soft and white with a silvery lustre, has a low melting point, and is a good conductor of heat and electricity.

Answer: Properties, occurrence, and uses. Potassium metal is soft and white with a silvery lustre, has a low melting point, and is a good conductor of heat and electricity. Potassium imparts a lavender colour to a flame, and its vapour is green.

Explanation: hope it helps

Answer:

Cilindros graduados

Explanation:

Son una herramienta de medición primaria para el volumen de un líquido, y tiene varias marcas hacia arriba y hacia abajo a lo largo del contenedor con incrementos específicos. Los cilindros graduados vienen en muchos tamaños; entre más pequeños sean de diámetro, más específicas serán las mediciones de volumen. Al leer el volumen de un cilindro graduado, notarán que el líquido parece tener una muesca; el líquido alrededor de los bordes será más alto que el líquido en el centro, inclinándose hacia abajo como los lados de un trampolín cuando alguien está parado en el medio. Esto se llama el menisco. Alineen el punto más bajo del menisco con la marca más cercana, manteniendo el nivel del cilindro para leer correctamente el volumen.

Answer:

4.99 ×10²³ molecules

Mass = 28.22 g

Explanation:

Given data:

Mass of H₂O₂ produced = ?

Mass of water react = 14.86 g

Number of molecules of H₂O₂ produced = ?

Solution:

Chemical equation:

2H₂O + O₂        →     2H₂O₂

Number of moles of water:

Number of moles = mass/molar mass

Number of moles = 14.86 g/ 18 g/mol

Number of moles = 0.83 mol

Now we will compare the moles of water and H₂O₂.

                   H₂O          :               H₂O₂

                    2              :                2

                  0.83           :             0.83

Mass of H₂O₂:

Mass = number of moles × molar mass

Mass = 0.83 mol × 34 g/mol

Mass = 28.22 g

Number of molecules:

1 mole = 6.022×10²³ molecules

0.83 mol × 6.022×10²³ molecules / 1 mol

4.99 ×10²³ molecules

Answer:

a fossil

Explanation:

Answer:Fossil

Explanation:A remnant or trace of an organism of a past geologic age, such as a skeleton or leaf imprint, embedded, and preserved in the Earth's crust, usually in stratified rock.

Answer:

1280L

Explanation:

Given parameters:

Initial pressure  = 0.727atm

Temperature  = 26.9°C

Initial volume  = 726mL  = 0.726L

New pressure  = 0.412atm

Unknown:

New volume of the gas sample  = ?

Solution:

To solve this problem, we apply boyles law;

            P1V1  = P2V2

P and V are pressure and temperature

1 and 2 are initial and new state

             0.727 x 0.726  = 0.412 x V2

                   V2  = 1.28mL  = 1280L

Answer:

Lithium sulphate (Li₂SO₄) and water (H₂O

Explanation:

H₂SO₄ + 2LiOH —> Li₂SO₄ + 2H₂O

The equation represented above indicates a neutralization reaction.

A neutralization reaction is a reaction involving acid and base which result in the production of salt and water.

In the equation above,

Reactant:

H₂SO₄ (acid)

LiOH (base)

Product:

Li₂SO₄ (salt)

H₂O (water)

Thus, lithium sulphate (Li₂SO₄) and water (H₂O) are the products of the reaction

Answer:

diet soda has artificial sugar and regular soda has insane amounts of sugar

Answer:

6.) mixture

8.) compound

Answer:

metallic bonds.

Explanation:

Generally, compounds that are ductile and excellent conductor of electricity have metallic bonds between them.

These compounds are usually metals.

Answer:

E) Plants take carbon from the atmosphere

Explanation:

Plants are a vital part in keeping the air clean. They take in CO2, H2O, and sunlight to start processing photosynthesis. The carbon taken in by the plant still remains with it after it dies, thus, fossil fuels.  

Answer:

e is correct

Explanation:

Answer:

C. Niche

Explanation:

The role of an organism in it's habitat is it's niche.

Answer:

VALENCE ELECTRONS are involved in the bonding of atoms

Explanation:

Hope that helps

Answer:

Each sample has the same number of molecules.

Explanation:

Just took the quiz on edge 2021

Taking into account the definition of Avogadro's number, each sample has the same number of molecules.

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole.

Avogadro's number applies to any substance.

Avogadro's number applies to any substance. This means that the number of molecules in 1 mol of oxygen is equal to the number of molecules in 1 mol of nitrogen.

Finally, the correct answer is the third option: each sample has the same number of molecules.

Learn more about Avogadro's Number:

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Answer:

A. Solid aluminum oxide and solid iron

Explanation:

The reaction equation is given as:

    2Al  +   Fe₂O₃  →   Al₂O₃   + 2Fe

The species on the left hand side are the reactants

Those on the right hand side of the expression are the products.

The products are:

Al₂O₃   and Fe

 These are solid aluminum oxide and solid iron

Answer:

the effort

Explanation:

:)

Answer: a

Explanation:

In a couplet one statement is agreeing and one is rejecting. Therefore, option A is correct.

A couplet is two lines of poetry that follow each other, particularly two lines that rhyme and are the same length.

Heroic couplets are similar to elegiac couplets. Heroic couplets are also usually closed and have their own meaning. They are frequently used in English epics and narrative poems.

A couplet is a unit of two lines of poetry that use the same or similar meter, rhyme, or are separated from other lines by a double line break. Here are some more important facts about Couplets are not required to be separate stanzas.

Thus, option A is correct.

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Answer:

A or B they do it for different reasons.

Explanation:

Explanation:

Atomic Number :

It only explain number of protons and electrons in nuclous

Atomic Mass :

Atomic mass tell how much neutrons are present in atom.

Answer:

[tex]\underline{ \boxed{atomic \: number = atomic \: mass - neutron \: number}} \\ \underline{ \boxed{atomic \: mass = proton \: number + neutron \: number}} \\ \underline{ \boxed{neutron \: number = atomic \: mass - proton \: number}}[/tex]

Explanation:

[tex] \underline{ \boxed{1}} \\ ATOMIC \: NUMBER = (atomic \: mass \: number\: - neutron \: number \: )\\ (which \: is \: same \: as ) = \: \underline{ \boxed{proton \: number}}\\ \\ \underline{ \boxed{2}} \\ ATOMIC \: MASS = (proton \: number \: + neutron \:number) \\ (is \: same \: as ) = \: \underline{ \boxed{sum \: of \:atomic \: nuclear \: content}} \\ \\ \underline{ \boxed{3}} \\ neutrons = (atomic \: mass \: number - proton \: number) \\ [/tex]

Answer:

Examples of EM waves are radio waves, microwaves, infrared waves, X-rays, gamma rays, etc.

Answer:

Electromagnetic waves can be split into a range of frequencies. This is known as the electromagnetic spectrum. Examples of EM waves are radio waves, microwaves, infrared waves, X-rays, gamma rays, etc.

Explanation:

Answer:118

Explanation: it’s right

Answer:

118 elements

Hope that helps

There are four equivalent best resonance structures of (PO₄)₃ according to the concept of resonance.

The phenomenon of resonance which is also called mesomerism is the ability of the molecules or ions to explain the bonding in them by the combination of several canonical structures.

It is an extension of Lewis structures to describe bonding in chemical species.The resonance structures also include the fractional charges present on the atom .They are capable of of depicting delocalized electrons which are unable to be depicted by single Lewis structure.

Molecules with extended pi system are well defined by resonance hybrids.It is a way of giving description of bonding in certain molecules.When there is passage of electrons through pi structures which are opposing ,resonance occurs.

Learn more about resonance,here:

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