What is an atom?
A An atom is a round spherical object found inside most objects made of
matter
B. An atom is a round spherical object found inside objects made of matter
C. An atom is a basic building block of matter.
D. An atom is a subunit of longer extended structures.

The final enthalpy of the overall chemical equation is -475.9KJ. and 2nd step must occur to calculate the final enthalpy.

Enthalpy depends only on the system's composition, temperature, and pressure; it is unaffected by the system's history. It is a quality or state function that resembles energy and has energy-like properties (and is thus measured in units of joules or ergs).

1st equation

C(s) + O₂ → CO₂ ΔH₁ = - 393.5KJ

2nd equation

CO + O₂ → 2CO₂ ΔH₂ = -566.0KJ

3rd equation

2H₂O → 2H₂ + O₂ ΔH₃ = 483.6KJ

Overall chemical equation is

C(s) + H₂ + O→ CO(g) + H₂(g)

The overall chemical equation's final enthalpy is

ΔH = ΔH₁ + ΔH₂ + ΔH₃

ΔH =  - 393.5 -566.0 + 483.6

ΔH = -959.5 + 475.9

ΔH = -475.9KJ.

To know more about enthalpy visit:

https://brainly.com/question/13996238

#SPJ4

The number of moles of the aluminum oxide that is produced is 4.5 moles.

We have to look at the stoichiometry of the reaction. In this case, we can see that there is a combination between the aluminum and the oxygen and then we have a product as have been shown in the equation that we have in the question.

From the equation, we know that;

4 moles of oxygen produces 2 moles of aluminum oxide

9 moles of oxygen produces x moles of aluminum oxide

x = 9 * 2/4

x = 4.5 moles

Learn more about stoichiometry:https://brainly.com/question/30218216

#SPJ1

Answer: its actually 4

Explanation:

Reactions that are reversible have the ability to move both forward and backward. Reactants change into products in a reversible reaction, but products can also change back into reactants.

In actuality, the opposing reaction as well as the forward reaction will occur simultaneously. In some chemical reactions, the reaction's products might combine to form the reactants' original form. Reversible reactions are what they are referred to as. To illustrate them, use the formula: A + B C + D. Only in one direction can irreversible chemical reactions take place. Reactants can transform into products, while products cannot transform back into reactants. Chemical reactions that can be reversed can happen both ways. The products can change back into the reactants, and the reactants can change back into the products.

Learn more about chemical :

brainly.com/question/70429

#SPJ4

A blend of dyes called a universal indicator gradually changes color throughout a pH range of 4 to 14. The color serves as a direct indicator of pH.

Thymol blue, methyl red, bromothymol blue, and phenolphthalein are the primary ingredients of a universal indicator in the form of a solution. Colors ranging from yellow to red denote an acidic solution, whereas colors ranging from blue to violet denote an alkaline solution and green denotes a neutral solution. Substances called indicators are those whose solutions change color as the pH changes. We refer to these as acid-base indicators. The conjugate base or acid versions of these typically weak acids or bases have various hues because of variations in their absorption spectra.

Learn more about solution here-

https://brainly.com/question/7932885

#SPJ4

Protons, neutrons and electrons that carbon-14 have if it has a neutral charge is 6 electrons, 8 neutron, and 6 proton.

The total of an element's protons plus neutrons is that element's mass number. One atomic mass unit, or amu, roughly equals the weight of neutrons and protons. While atomic number equal to proton and electron.

The proton can be calculate as follows:

C−14 has atomic no = 6 and mass no = 14.

so

No of electrons = No of protons = atomic no = 6

No of neutron = mass no-atomic no = 14−6=8

Therefore,  Protons, neutrons, and electrons that carbon-14 have if it has a neutral charge is 6 electrons, 8 neutron, and 6 proton.

Learn more about atom at https://brainly.com/question/886387

#SPJ4

The molarity when .772 moles are dissolved in .500 Liters of water is 0.0015M. The molarity when .453 moles are dissolved in .450 Liters of water is 0.001M.

The term molarity is defined as the number of moles of solute dissolved in per litre of solution. The unit of molarity is mole, which is denoted by the symbol "M".

M = Number of moles of solute / litre in solution

1. Number of moles of solute = .772 moles

so, 0.772 / 500

= 0.0015 M

2. Number of moles of solute =  .453 moles

so, .453 / 450

= 0.001 M

Thus, The molarity when .772 moles are dissolved in .500 Liters of water is 0.0015M. The molarity when .453 moles are dissolved in .450 Liters of water is 0.001M.

To learn more about the molarity, follow the link;

https://brainly.com/question/8732513

#SPJ1

Geometry for the complex ion [Co(en)(H2O)4]2+ that are possible is : Octahedral.

A compound with six atoms or groups of atoms or ligands grouped symmetrically around a central atom and defining the vertices of the octahedron represents the shape of an octahedron in chemistry and is known as an octahedral molecular geometry (also known as a square bipyramid).

The prefix is octa because the octahedron has eight faces. Octahedral bond angle values between 90° and 180° are what determine the octahedral shape. The angles between each of the four atoms that make up the square bases of the two pyramids of the octahedral structure and one of the apex atoms are both 90 degrees.

To know more about octahedral geometry , refer

https://brainly.com/question/29031085

#SPJ4

Answer:

Think sorry if i did it wrong The molar mass that is the mass of 6.022 X 1023 atoms of helium is 4g. Hence 1 mole of He = 4 g of He = 6.022 X 1023atoms of He. 1 g of He = (6.022 X 1023) / 4 atoms of He. 52 g of He = (6.022 X 1023X 52 ) / 4 atoms of He.

For Helium,

Number of atoms=Number of moles ×6.022×1023

No of Moles = 6.022×10

2312.044×10

23 = 2.

Now, atomic mass of He=4

Weight = 2×4 = 8 g

The molar mass that is the mass of 6.022 X 1023 atoms of helium is 4g. Hence 1 mole of He = 4 g of He = 6.022 X 1023atoms of He. 1 g of He = (6.022 X 1023) / 4 atoms of He. 52 g of He = (6.022 X 1023X 52 ) / 4 atoms of He.

As we know, gram atoms = gram mole

here, no of moles = 23/46 =2 so no of gram atoms are 2.

Explanation:

MARK ME AS A BRAINLEIST

AND FOLLOW ME AND THANKS MY ANSWER PLEASE

THANKS  

0

0.0

(0 votes)

Still have questions?

FIND MORE ANSWERS

ASK YOUR QUESTION

New questions in Chemistry

write the molecular formula and name given in the picture​

In determination of Calcium Gluconate, pH required is​

precision is related to the​

mai apne poiñts khud le rha hu (≧▽≦)(≧▽≦) kisi ko chahiye kya​

check the attached picture identify and write the structures of A, B and C in the following reaction.​

-2, विक्षेपण तथा विक्षेण क्षमता का समझाइये। Explain Dispersion and Dispersive power.​

which of the following elements does not lose an electron easily? a)Na b)F c)Mg d)Al ​

WRITE THE MOLECULAR FORMULA ND THE NAME OF:​

then oppa for us for me also ur cute my mangodolly oppa mangodolly=(aamras)​

write IUPSC name of C2H5 | C2H5 - C - C2H5 | C2H5 check the attached picture​

Sex___Girls___Join___Fast_____ hts-rrqq-jtw​

c.o.m.e. h.e.r.e. t.o h.a.v.e f.un jta-yhpx-hkp what is a chemical reaction?

Why is 6-decene not possible? What would it be called? Draw it.

If alkaline solution we have chromate ions and in acidic solution we have dichromate ions back explain the reason

What is the meaning of stp

H ey gi rl s co me t o ha ve f un an d s ex.. uvk-yuow-ubr..

यह नोएडा टू है प्रेसिपिटेशन 2 सॉल्यूशन शोल्ड बे​

27. Identify the type of each of the following reactions stating reason for your answers : Heat (A) 2FeSO4(s) → Fe2O3(s) + SO2(g) + SO3(9) (B) CuSO4(a…

state modern periodic law. what is long form of periodic table? what are its main features? how is it superior to Mendeleev's table?​

सोडियम क्लोराइड फॉर्म बाय​

Answer:

a. A compound can be a pure substance.

b. A compound can be isolated.

Explanation:

a. A compound can be a pure substance.

This is because a compound which is made up of two or more atoms is also a pure substance since, a pure substance is a substance that contains only one type of matter - that is, it is in a single phase of matter.

Examples of compounds include water (H₂O) and ammonia (NH₃)

b. A compound can be isolated.

This is because, since it is a pure substance, it has unique properties which distinguish it from other compounds.

Answer:

Kingdom

Explanation:

Out of all the choices, Kingdom is the most inclusive and least specific.

When the question asks for the most inclusive and least specific group, it is asking for the most broad group.

Also, you can just look at the left of the image. It basically shows you the answer.

Answer: i don't know

Explanation:

Answer: condensation

Explanation: This is because a condensation reaction involves the loss of one or more water molecule

A terminology which can be used to describe the above chemical reactions is condensation.

Condensation can be defined as a type of chemical reaction in which the combining chemical elements or compounds (reactants) losses one or more water molecule.

Based on the reaction shown above, we can deduce that the reacting chemical compounds (reactants) lost one water molecule.

Read more on chemical reaction here: brainly.com/question/13750908

#SPJ2

When mixing and storing materials, volumetric flasks are utilized to determine volumes.

A volumetric flask is a piece of plastic or glass lab equipment used to make solutions. It is applied to prepare a solution with a specific volume. Compared to beakers or Erlenmeyer flasks, volumetric flasks can be used to measure volumes significantly more precisely.

When it's important to know the volume of the mixture being made exactly and properly, a volumetric flask is utilized. Similar to volumetric pipets, the size of a volumetric flask varies according to the solution volume that is being made.

To know more about volumetric flask visit :

https://brainly.com/question/15494897

#SPJ1

Answer:

186.25

Explanation:

KCL= 74.5 (molar mass)

2.5*74.5= 186.25

Answer:

d thermal kinetic energy

When nitroglycerin (C3H50N309) is detonated, the carbon and hydrogen atoms bonded to oxygen and nitrogen. The type of energy is thermal kinetic energy.

Thermal energy is the total of potential energy and kinetic energy. Kinetic energy is the energy used in doing a work.

Thermal energy is the form of heat, it can be both potential and kinetic. In the reaction, the heat is releasing, so it's a thermal kinetic energy.

Thus, the correct option is d. Thermal kinetic energy.

Learn more about Thermal kinetic energy

https://brainly.com/question/1396546

#SPJ2

There are two isotopes of bromine atom⁷⁹Br, ⁸¹Br.

a) Each peak originates from a different isotope of bromine. Each peak is composed of a different isotope of bromine. The mass of each isotope is the sum of the masses of the two atoms in the molecule. The average molecular weight of Br_ molecules is 36.184 g/mol.

b) The isotope of bromine has an atomic weight of 78.92 amu and a relative abundance of 50.69. The other major isotope of bromine has an atomic mass of 80.92 amu and a relative abundance of 49.31.

c) The average molecular mass of a [tex]Br_{2}[/tex] = 159.8066274.

d) The average atomic mass of Bromine is found to be. 9 u or 79.9 g mol⁻¹.

e) Bromine has two stable isotopes, ⁷⁹Br and ⁸¹Br, having relative mass abundances of 50.686% and 49.314%

Learn more about isotope visit:

brainly.com/question/11394246

#SPJ4

What best describe the enthalpy of formation is that it is the energy change that happens when a substance forms from its elements

Option b

This goes to say that it is the heat change which occurred when one mole of substance is formed from its constituent elements.

Enthalpy can be defined as the sum total of the internal energy and the product of the pressure and volume of a system

So therefore, the entalphy of formation is

the energy change that happens when a substance forms from its

elements

Learn more about enthalpy of formation:

https://brainly.com/question/7580621

Answer:

The answer is B, The energy change that happens when a substance forms from its elements

Explanation:

Answer:

virgil Cassidy n.v

Christian doctorbbn nnn

Explanation:

Verizon mlm

Answer:

100 kPa

Explanation:

This can be solved with one of the gases law. This law establishes that the pressure of the gas is directly proportional to its temperature: If we increase the temperature, the pressure will increase.

In this case, we decrease the temperature, so its pressure will be lower.

P₁ / T₁ = P₂ / T₂

We convert T° to Absolutes Values

27°C + 273 = 300 K

-173°C + 273 = 100 K

300 kPa / 300 K = P₂ / 100 K

(300 kPa / 300 K) . 100K = P₂

P₂ = 100 kPa

This is the Charles Gay Lussac's law.

Answer:

500ml

Explanation:

because 100 ×2 is 200 and the 300

500ml

In chemistry, a sigma bond (σ bond) is a chemical bond formed by the overlap of two atomic orbitals. On the other hand, a pi bond (π bond) is a chemical bond formed by the overlap of two p orbitals.

Sigma bonds are the strongest type of covalent bond, with a bond strength of about 280-350 kJ/mol. They are also the shortest bond, with an average length of about 0.15 nanometers (nm).

Sigma bonds are characterized by their short bond length and high bond energy. They are also directional, meaning that they are stronger in certain orientations than in others.

Pi bonds are weaker than sigma bonds, with a bond strength of about 70-100 kJ/mol. They are also longer than sigma bonds, with an average length of about 0.2nm.

Pi bonds are characterized by their longer bond length and lower bond energy compared to sigma bonds. They are also less directional than sigma bonds, meaning that they are relatively equally strong in all orientations.

Learn more about bonds:

https://brainly.com/question/13559044

Covalent bonds has two types which are a sigma bond is a chemical bond formed by the overlap of two atomic orbitals and a pi bond (π bond) is a chemical bond formed by the overlap of two p orbitals.

Covalent bond is defined as a type of bond which is formed by the mutual sharing of electrons to form electron pairs between the two atoms.These electron pairs are called as bonding pairs or shared pair of electrons.

Due to the sharing of valence electrons , the atoms are able to achieve a stable electronic configuration . Covalent bonding involves many types of interactions like σ bonding,π bonding ,metal-to-metal bonding ,etc.

Sigma bonds are the strongest covalent bonds while the pi bonds are weaker covalent bonds .Covalent bonds are affected by electronegativities of the atoms present in the molecules.Compounds having covalent bonds have lower melting points as compared to those with ionic bonds.

Learn more about covalent bond,here:

https://brainly.com/question/19382448

#SPJ2

Answer:

it’s 4

Explanation:

The final pressure if the final volume is 1. 22 L will be 0.4234 atm

To calculate the final pressure of the hydrogen in the balloon if the final volume is 1.22 L, the ideal gas law can be used. The ideal gas law states that PV = NRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature.

Since the number of moles and the temperature is not given, we can assume that they remain constant. So we can use the equation PV = k, where k is a constant.

Given the initial pressure and volume of the hydrogen are 0.95 atm and 0.55 L respectively.

0.95*0.55 = k

so k = 0.5175

then the final pressure can be calculated by:

P1V1 = P2V2

0.950.55 = P21.22

P2 = (0.5175) / (1.22) = 0.4234 atm

The final pressure of the hydrogen in the balloon will be 0.4234 atm.

Learn more about the effect of changing the volume of a gas on its pressure here: https://brainly.com/question/27704299

#SPJ4

Answer:

Student B because it can be done in natural settings​

Explanation:

Answer:

I think it's B

Explanation:

B is talking about the bees helping the flowers, so that isn't helping the bees but the flowers instead

Answer:

Soluble

Salt is soulble is water

Explanation:

Solubility although similar just means how easily it will disolve somthing that isnt soluble in one thing still has solubility

Your limiting reagent will be copper (II) chloride. The mole ratio is the most crucial tool you'll have to tackle this problem, or any other stoichiometry problem, for that matter.

Keep in mind that in order to make 3 moles of copper from 3 moles of copper (II) chloride, you need 2 moles of aluminum. Unbalanced reaction: Al(s)+HCl(aq) AlCl3(aq)+H2(g). Cl. Balance On the product side there are three Cl atoms and on the reactant side there is one. There is only one hydrogen atom on the reactant side and two on the product side of the reaction Mg + HCl MgCl 2 + H 2. The equation is therefore unbalanced.

Learn more about reagent here-

https://brainly.com/question/28196410

#SPJ4

Answer:

d. Decreasing volume

step by step explanation: