Which Of The Following Is The Symbol For An Element?Co2Ch4CH2o (2024)

Chemistry High School

Answers

Answer 1

The answer is your third option or C
-The rest are compounds

Answer 2

The answer is C because the others are mixtures or compounds

Related Questions

how many atoms are in 23 moles of oxygen ?

Answers

Answer:

23 moles Oxygen × 6.02 × 1023 atoms = 1.3846 × 1025 atoms Oxygen.

Explanation:

A chemical reaction is the only way to separate a(n) ________

Answers

answer:substance
explanation:

Answer:

B. pure substance

Explanation:

A chemical reaction is the only way to separate a(n) ✔ pure substance.

Which of the following symbols would be included in the noble gas notation for an element that had valence electrons in the 5s subshell?

Ar
Kr
Xe
Rn

Answers

Answer:

Kr

Explanation:

Just took the test

What are some molecular compounds that we use in everyday life and their products?

Ex: Kirkland water - dihydrogen monoxide; H2O

Answers

Answer:

Water. Chemical Formula: H2O.

Table Salt. Chemical Formula: NaCl.

Sucrose (Sugar) Chemical Formula: C12H22O11.

Soaps. Chemical Formula: RCOO–Na, Where R is a long chain of carbon atoms ranging from 16-18 in number.

Toothpaste. Chemical Formula: CaCO3 or NaF.

Explanation:

Which order shows decreasing wavelength?

gamma → ultraviolet → infrared → radio
infrared → gamma → radio → ultraviolet
radio → infrared → ultraviolet → gamma
ultraviolet → radio → infrared → gamma

Answers

Answer:

The answer is c radio --> infrared --> ultraviolet --> gamma

Explanation:

I just did it

Answer:

C

Explanation:

just did it

Please help!!! I don’t know

Answers

Answer:

4.06×10^23

Explanation:

1 mole has 6.023×10^23 molecules

0.675 moles have (6.023×10^23×0.675) molecules

Do which levels of organization do unicellular organisms not have? Explain why.

Answers

Answer:

Unicellular organisms do not have levels of organization. Unicellular organisms need fewer resources and some can live in harsh conditions. They are very small and are easily eaten by other organisms

Explanation:

The name for the ionic compound CoHPO4​

Answers

Answer:

Dicalcium phosphate. (I'm sure meant for the "o" to be an "a" for Calcium).

Explanation:

I hope this helps! :D Have a nice night!

i think it’s calcium

According to Kepler’s 3rd law of motion, which planet will have the shortest orbital period?

A). Jupiter

B). Mercury

C). Earth

D). Saturn

Answers

Answer:

B: Mercury

Explanation:

Yuh

A strand of DNA has the following order of bases: CGTATGCA. What is the matching ( complimentary) strand

Answers

Answer:

GCATACGT

Explanation:

A=T

G=C

C=G

T=A

This key goes with any complementary DNA strand.

Hope this helps you out!

Put the steps below in the order they are performed in the lab experiment by numbering them 1-7. Use a Bunsen burner to heat and dry the hydrate, repeating until the mass no longer decreases. Measure the final masses of the crucible, cover, and anhydrous salt. Compute differences in masses to find the reactants and products. Measure initial masses of the crucible and cover, with and without the hydrate. Use the numbers of moles to compute the mole ratio. Use stoichiometry to convert these masses to moles. Use the mole ratio to write the hydrate’s formula.

Answers

Answer:

1) Measure initial masses of the crucible and cover with and without the hydrate.

2) Use a Bunsen burner to heat and dry the hydrate, repeating until the mass no longer decreases.

3) Measure the final masses of the crucible, cover, and anhydrous salt.

4) Compute differences in masses to find the reactants and products.

5) Use stoichiometry to convert these masses to moles.

6) Use the numbers of moles to compute the mole ratio.

7) Use the mole ratio to write the hydrate’s formula.

Explanation:

A hydrate is any substance that contains water of crystallization. The water of crystallization constitutes part of the mass of the substance. When heated to constant mass, the substance looses its water of crystallization and becomes anhydrous.

The mass of the anhydrous substance is now obtained by weighing again and subtracted from that of the hydrated substance. The masses are converted to moles using stoichiometry and the moles are then used to obtain the formula of the hydrate.

Answer: answers in order from top to bottom

2

3

4

1

6

5

7

Explanation: right on edg

Which image shows a foliated metamorphic rock?

light colored rock with fine grains and metallic luster.

Smooth green rock.

dark color rock with coarse grains in parallel layers.

Answers

Answer:

C

Explanation:

The answer is in the image.

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Walk in faith and trust in God!

In addition to having a blue color what other characteristic do Neptune and Uranus share??

no rings

27 moons

no axis tilt

cold temperatures. HELP ASP

Answers

Answer:

d

Explanation:

it just makes sense

Answer:

Cold temperatures!

Explanation:

Both planets are very far from the sun, now to explain how the other answers would fit or just dont make sense, No rings, the answer isn't the best fitting answer for this question, 27 moons, this is wrong because neptune has 14 moons, only uranus has 27. No axis tilt, this answer is wrong because both planets have an axis.

What Is the atomic mass of the element shown? 14 Si silicon 28.1
A. 56
B. 14
C. 42.1
D. 28.1

Answers

Answer:

28.1

Explanation:

plez give me brainliest

How many grams of lithium are in 1.25 x 10^26 atoms of Li?

Answers

Mass of Lithium = 1443.73 g ≈ 1.4 kg

Further explanation

The mole is the number of particles(molecules, atoms, ions) contained in a substance

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

The number of atoms of Li = N=1.25 x 10²⁶

mol Li(n) :

[tex]\tt n=\dfrac{N}{No}\\\\n=\dfrac{1.25\times 10^{26}}{6.02\times 10^{23}}\\\\n=2.08\times 10^2[/tex]

mass Li (Ar=6.941 g/mol)

[tex]\tt mass=mol\times Ar\\\\mass=208\times 6,941\\\\mass=1443.73~g[/tex]

before the quarry was dug, the land contained more vegetation . what impact has this change most likely had on the local ecosystem

Answers

It was loss of nutrients, I think

Explanation:

The quarry was dug up and vegetation started dying. The quarry was probably rich with nutrients

Please brainliest !! ❤️

What occurs to the kinetic energy when the mass moving object is doubled?

Answers

Answer:

Kinetic energy increases.

Explanation:

Kinetic energy is energy you get from moving. The equation for KE depends on mass as well as velocity. If you increase one of these factors, KE will increase too.

Welding is an industrial process that is used to join pieces of metal. A certain mixture of gases used in welding is composed of carbon dioxide and argon. The partial pressure of carbon dioxide is 0.080 atm and the partial pressure of argon is 0.24 atm

Answers

The given question is incomplete. The complete question is :

Welding is an industrial process that is used to join pieces of metal. A certain mixture of gases used in welding is composed of carbon dioxide and argon. The partial pressure of carbon dioxide is 0.080 atm and the partial pressure of argon is 0.24 atm. What is the total pressure of the mixture.

Answer: 0.32 atm

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

[tex]p_{total}=p_{CO_2}+p_{Ar}[/tex]

Given : [tex]p_{total}[/tex] =total pressure of gases = ?

[tex]p_{CO_2}[/tex] = partial pressure of carbon dioxide = 0.080 atm

[tex]p_{Ar}[/tex] = partial pressure of argon = 0.24 atm

putting in the values we get:

[tex]p_{total}=0.080atm+0.24atm[/tex]

[tex]p_{total}=0.32atm[/tex]

Thus the total pressure of the gases is 0.32 atm

You and your lab group have been asked to design an investigation to determine the effects of heat transfer between two different objects.
Which of the following investigation designs explains the heat transfer when atoms directly touch?
А
Boiling water, in a pan, sitting on a lit Bunsen burner.
B
Boiling water, in a pan, in front of a lit Bunsen burner.
С
Hands warming in front of a lit Bunsen burner.
D
Hands touching the handle of pan sitting on a lit Bunsen burner.

Answers

I believe that answer is D
The heat from the Bunsen burner transfers to the water and the pot, then the heat from the pot transfers to the person’s hand.

The investigation designs that explain the heat transfer when atoms directly touch have been the hand touching the handle of the pan sitting on the lit bunsen burner. Thus, option D is correct.

Heat has been the energy that can neither be created nor destroyed. The heat energy can be transferred from one body to another with the transfer of atomic energy.

The atoms of an object gaining energy start to vibrate and transfer the energy to another atom that is in close proximity to the vibrating atoms.

The boiling of water in a pan by sitting it onto the bunsen burner has been an example of the transfer of heat energy. The heat energy of the burner has been transferred to the atoms of the pan that resulting in the boiling of the water in the pan. It has been the transfer of energy in an object.

By touching the pan, the energy of the pan has been transferred to the body. Thus the transfer of energy takes place between two different objects.

Thus, the example of heat transfer between two different objects has been the transfer of energy from the bunsen burner to the pan, and from touching the pan by hands, the energy has been transferred to the hands, Thus, option D is correct.

For more information about the heat transfer, refer to the link:

https://brainly.com/question/802617

Two students are given different samples of a substance and are instructed to determine the properties of the substance.

Which statement describes a property that will be the same for both students?

color because it is an extensive property
mass because it is an extensive property
boiling point because it is an intensive property
volume because it is an intensive property

Answers

Answer:

C) Boiling point because it is an intensive property.

The statement describes a property that will be the same for both students is (B). mass because it is an extensive property Hence Option (B) is correct.

What is an Extensive Property ?

A property known as an extensive property depends on the quantity of materials in a sample. A couple of instances of extensive attributes are mass and volume.

According to how a property varies as the system's size changes, physical qualities of materials and systems are sometimes classified as either intensive or extensive.

Therefore, The statement describes a property that will be the same for both students is (B). mass because it is an extensive property Hence Option (B) is correct.

Learn more about Extensive Property here ;

https://brainly.com/question/12937142

#SPJ6

Which statement best describes how temperature, humidity, and pressure vary within an air mass?

Answers

Temperature, humidity,and pressure are basically the same

Temperature and humidity

The Nebular Theory explains the formation of:

A). only planets

B). galaxies

C). the Universe

D). a Star and orbiting planets

Answers

Answer:

The Answer is D: A star and orbiting planets

Explanation:

Not to be confused with the Big Bang theroy (which "explains" the origin of the universe) The Neublar Theory explains the formation of the solar system, which is bascially A star and orbiting planets.

I hope this answers your question, Have a blessed day and Happy holidays

❄️☃️

ide appreciate if someone would help me with these.

Answers

Answer:

can't do much

Explanation:

baking soda;8,alkaline

bleach:12,alkaline.

coffee:5.10,acidic

co*ke;co*ke,acidic

milk;6.9,acidic.

lemon juice;2,acidic

this is all i can do.

which is a polyatomic ion​

Answers

I think it’s the top right one but I might be wrong lol

Explanation:

Polyatomic ions are ions which consist of more than one atom. For example, nitrate ion, NO3-, contains one nitrogen atom and three oxygen atoms. The atoms in a polyatomic ion are usually covalently bonded to one another, and therefore stay together as a single, charged unit.

How many molecules are in 100 g of C6H120,?*​

Answers

Answer:

3.37 × 10²³ molecules

Explanation:

Given data:

Mass of C₆H₁₂O₆ = 100 g

Number of molecules = ?

Solution:

Number of moles of C₆H₁₂O₆:

Number of moles = mass/molar mass

Number of moles = 100 g/ 180.16 g/mol

Number of moles = 0.56 mol

Number of molecules:

1 mole contain 6.022 × 10²³ molecules

0.56 mol × 6.022 × 10²³ molecules /1 mol

3.37 × 10²³ molecules

Convert 3.30 g of copper (II) hydroxide Cu(OH)2 to molecules.

Answers

Answer:

0.18× 10²³ molecules

Explanation:

Given data:

Mass of copper hydroxide = 3.30 g

Number of molecules = ?

Solution:

Number of moles = mass/molar mass

Number of moles = 3.30 g/97.56 g/mol

Number of moles = 0.03 mol

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

0.03 mol × 6.022 × 10²³ molecules / 1mol

0.18× 10²³ molecules

Calculate the moles of 336 L of carbon dioxide gas (CO2) at STP.

Answers

Answer:

14.99 mols of CO2

Explanation:

STP= 273 k , 1 atm , .0821 gas constant

N=PV/RT

N= 1x336/.0821x273

14.99 mols of CO2

659.6 grams of CO2

Write equilibrium constant (KC) for the following reactions

1. N2(g) + O2(g) ⇌ 2NO(g)

2. N2(g) + 3H2(g) ⇌ 2NH3(g)

3. 2SO2(s) + O2(g) ⇌ 3SO3(g)

4. 2Fe(S) + 4H2O(g) ⇌Fe3O4(s) +4H2(g)​

Answers

The equilibrium constant(Kc) is equal to the concentration of the products over the concentration of the reactants, and each coefficient of the compound in an equilibrium state

Further explanation

The equilibrium constant or Kc is the value of the concentration product in the equilibrium state of the substance in the right segment divided by the product of the substance in the left section, each of which has a reaction coefficient raised

solid (s) and liquid (l) have no concentration, so these two phases are not involved in the equilibrium constant KC (given the value = 1).

The equilibrium constant based on concentration (Kc) in a reaction

pA + qB -----> mC + nD

[tex]\tt Kc=\dfrac{[C]^m[D]^n}{[A]^p[B]^q}[/tex]

1. N2(g) + O2(g) ⇌ 2NO(g)

[tex]\tt Kc=\dfrac{[NO]^2}{[N_2][O_2]}[/tex]

2. N2(g) + 3H2(g) ⇌ 2NH3(g)

[tex]\tt Kc=\dfrac{[NH_3]^2}{[N_2][H_2]^3}[/tex]

3. 2SO2(g) + O2(g) ⇌ 3SO3(g)

[tex]\tt Kc=\dfrac{[SO_3]^3}{[SO_2]^2[O_2]}[/tex]

4. 2Fe(S) + 4H2O(g) ⇌Fe3O4(s) +4H2(g)​

[tex]\tt Kc=\dfrac{[H_2]^4}{[H_2O]^4}[/tex]

The metallic character of an element is determined by how readily it loses electrons. Elements that lose electrons most easily have the greatest metallic character. Which group has the greatest metallic character?

Answers

Answer:

Group 1 metals or the alkali metals

Explanation:

The group 1 elements are all metals except for hydrogen, the first element in the group. Group 1 metals have one valence electron in their outermost shell. The metallic character increases as one goes down the group.

The metallic character of an element is determined by how readily it loses electrons. Elements that lose electrons most easily have the greatest metallic character. Group 1 metals have the greatest metallic character due to the ease with which they donate or lose their one valence electron. As the atomic radius increases on going down the group, their metallic character increases. Also, due to screening effect of the inner electrons on the valence electron from the positive nuclear charge of the nucleus, metallic property increases on going down the group.

Complete the nuclear equation

42 K → 0 e
19____-1

Answers

Answer:

42 19 K→42 20 Ca+e−

Explanation:

Naturally-occurring potassium atoms have a weighted average atomic mass of 39.10 (as seen on most modern versions of the periodic table.) Each potassium atom contains 19 protons p+ and thus an average potassium atom contains about 39.10−19≈20 neutrons n0.

This particular isotope of potassium-42 contains 42 nucleons (i.e., protons and neutrons, combined;) Like other isotopes of potassium 19 out of these nucleons are protons; the rest 42−19=23 are therefore neutrons.

Which Of The Following Is The Symbol For An Element?Co2Ch4CH2o (2024)
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