How many moles is 8.35x 10^25

The delta G for the dissociation is 87,865 joule/kg.

The process is non-spontaneous because the value of Gibbs free energy is positive.

The breaking up of a compound into a simpler form that can be recombined under other conditions.

Given,

[tex]\bold{2NH_3 (g) = N_2(g) + 3H_2(g)}[/tex]

H = 145 kJ

Delta S = 195 J/k

Determining the G using the following process:

G = H -TS

[tex]\bold{G = (145\times10^3 J) -(293K \times 195 J/K})[/tex]

G = 87,865 Joules/K

Thus, the value of Delta G is  87,865 and the process is non-spontaneous.

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Answer:

C. 87.9 kJ, nonspontaneous

Explanation:

just did the quiz

The observation for the energy of making bond is released greater than the breaking bond, and the excess is converted to thermal energy.

The reaction for the formation of bonds is given as:

[tex]\rm CH_4\;+\;2\;O_2\rightleftharpoons C_4H_4O\;\rightleftharpoons CO_2\;+\;2\;H_2O[/tex]

The reaction of the formation of product requires is released from the bond energy of the reactants. The energy of the reactant is released and is converted to chemical energy.

In the given reaction, the energy required in breaking bonds is less than the energy required in, making bonds.

The bond energy of the product molecules is less than the reactant, thus, the energy in making bonds released is greater, and the excess energy is converted to thermal energy.

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Answer:

Yes!

Explanation:

You certainly could form something. It would be written as H02 and it is called Hydroperoxyl. This is formed by the transfer of a hydrogen atom to an oxygen atom.

Answer:

Explanation:

V1 = 10 m^3

P1 = 1.00 atmospheres

V2 = ?

P2 = 0.35

Formula

V1 * P1 = V2 * P2

Solution

10 * 1 = x * 0.35           Combine the left and divide both sides by 0.35

10/0.35 = x

x = 28.57 m^3

This problem is providing us with the number of moles of oxygen in a gas sample as 12.12 mol. Thus, the volume those moles occupy is required and found to be 271.5 L.

In chemistry, we study ideal gases under the assumption of no interactions among gas molecules, therefore the widely accepted equation, known as the ideal gas equation, we use to study the moles-pressure-temperature-volume relationship is:

[tex]PV=nRT[/tex]

Now, this problem gives n and asks for V at STP, which stands for standard temperature and pressure, taking the values of 273 K and 1 atm, respectively. Hence, we solve for the volume as follows:

[tex]V=\frac{nRT}{P}[/tex]

Thereafter, we plug in the numbers to obtain:

[tex]V=\frac{12.12mol*0.08206\frac{atm*L}{mol*K}*273K}{1atm}\\\\V=271.5L[/tex]

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Lol Most people would say c but its A

Answer:

HIGHLY ENDOTHERMIC

Explanation:

Endothermic and exothermic reactions are based on energy absorption and energy release when the product formation occurs in a chemical reaction.

Highly endothermic reactions will need a lot of energy.

The reaction in which the reactants absorbs the heat and energy from the system it is present to for the products is called the endothermic reaction.

The chemical reaction in which the heat is produced when the products are created is called the exothermic reaction.

Therefore, option A is correct.

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Answer:

v'2 is the final velocity of the bullet  

Explanation:

I had the question and found it on Chegg so credits to him/her

Answer:

covalent bond

Explanation:

covalent bond, in chemistry, the interatomic linkage that results from the sharing of an electron pair between two atoms. The binding arises from the electrostatic attraction of their nuclei for the same electrons.

option A. best demonstrates resilience when confronted with stress.

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Answer:

5.1 Crystal structure and habit.

5.2 Hardness.

5.3 Lustre and diaphaneity.

5.4 Colour and streak.

5.5 Cleavage, parting, fracture, and tenacity.

5.6 Specific gravity.

5.7 Other properties.

Answer:

Anther: It produces pollen.

Filament: It hold the anther.

Anther and filament together make the stamen.

Answer:

Explanation: Diamond and graphite are made out of carbon atoms. The difference between the two substance is the arrangement of the carbon atoms inside each one.

Answer:

Diamond and graphite are allotropes of carbon

Explanation:

» Diamond has tetrahedral edges associating through weaker vander waal forces of attraction, it is colorless and glittering, and it is very hard.

» Graphite has hexagonal edges associating vander waal forces, it is black in color and it is soft. Example of graphite is the black rod in a dry cell.

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Energy is required to melt a solid because the cohesive bonds between the molecules in the solid must be broken apart so that the molecules can move around at comparable kinetic energies

Answer:

348 g FeCO3

Explanation:Use your 3 mol's and find the atomic number of Iron II and CO3 which i think is 115.854 so you multiply it by the 3 and that should give you your grams in FeCO3.

Answer: Glass

Explanation: It helps us drive if we didnt have it then we would have to blink a lot more while driving which would result in a lot more people getting in to car crashes imagine plaines without windows or glass.

Answer:

(See attachment below)

Explanation:

Answer: 4. 5.15 Moles

5. 6.02×10 atoms

. 7. 1.3545×10^23 atoms

8. 1.73075×10^22 atoms

. 10. 3.40499×110 atoms

Answer:

b/c the line of electronegativity pass through germanium

Answer: (1,3-dimethylbutyl) acetate

Explanation:

sorry if it wrong

(1,3-dimethylbutyl) acetate is the product from the reaction of sulfuric acid acetic acid and 1 pentanol.

Acetic acid is called as ethanoic acid found in many different products main component of vinegar, supply in the ingredients like apple cider vinegar.

It has a Chemical formula [tex]\rm C_2H_4O_2[/tex] can also be written as [tex]\rm CH_3COOH[/tex] or [tex]\rm CH_3CO_2H[/tex]. As it contain a carbon atom in the acetic acid structure, is considered an organic compound.

Acetic acid is a colorless liquid with strong and pungent smell. The undiluted form of acetic acid or ethanoic acid is known as glacial acetic acid.

Although Acetic acid is a weak acid but its concentrated form is act as a corrosive substance and can cause some damage to the skin. It can be used for manufacture of  acetic anhydride, cellulose acetate, acetic esters, plastics, dyes, etc.

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Based on bond energies, the reaction is endothermic, because stronger bonds are broken than formed.

The total change in bond energy of a reaction is calculated using the formula below:

A reaction is exothermic if the total change in bond energy is negative meaning that stronger bonds are formed than broken.

A reaction is endothermic if the total change in bond energy is positive meaning that stronger bonds are broken than formed.

Given a reaction such as: C2H6 → C2H4 + H2

Sum of energies of bonds broken:

C-C + 6 × H-C

347 + 6 × 413

Sum of energy of bonds broken = 2825 kJ

Sum of energy of bonds formed:

C=C + 4 × H-C + H-H

614 + 4 × 413 + 432

Sum of energy of bonds formed = 2725 kJ

Total change in bond energy = 2825 - 2725

Total change in bond energy = 100 kJ

Since the value of total change in bond energy is positive, the reaction is endothermic.

Therefore, the reaction is endothermic, because stronger bonds are broken than formed.

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Short Answer:

C)

Long Answer:

A- When a solid is heated, it melts and becomes a liquid. (Another older term is Fusion.) An example of this is ice to water when you leave it outside the freezer.

B- When a liquid becomes a gas, it undergoes a process called boiling. Example: When you boil water, it becomes steam.

C- It is called deposition. Example: How snow forms in clouds.

Answer:

A nucleic acid

Explanation: A nucleic acid is a polymeric macromolecule made up of repeated units of monomeric 'nucleotides' composed of a nitrogenous heterocyclic base which is either a purine or pyrimidine, a pentose five-carbon sugar either ribose or 2′-deoxyribose, and one to three phosphate groups.

Answer:
B. 297.1
Explanation:
To fond molar mass you just add the atomic
masses together however many ttimes they appear. Eg. BaBr2 would be 137.33 + 2(79.9)

It is important to allow each spot added to the chromatography paper to dry completely before adding another spot in order to allow even separation of the solutes.

Chromatography is the biological technique used to separate the constituent solutes of a solution using a stationary medium and a moving phase.

There are different types of chromatographic procedure including;

In paper chromatography, paper is used as the stationary medium. It is however, important to allow each spot added to the chromatography paper to dry completely before adding another spot in order to allow even separation of the solutes.

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The fluid filled area between the pleural layers is called the pleural cavity.

Answer:

energy known as the latent heat of vaporization is required to break the hydrogen bonds. At 100 °C, 540 calories per gram of water are needed to convert one gram of liquid water to one gram of water vapour under normal pressure.

Explanation:energy known as the latent heat of vaporization is required to break the hydrogen bonds. At 100 °C, 540 calories per gram of water are needed to convert one gram of liquid water to one gram of water vapour under normal pressure.

Answer:

100 °C, 540 calories per gram of water

Explanation:

Answer:

Approx. 20 moles of iron.

Explanation:

There are approx. 6.022 x 10.23 iron atoms per mole of iron. In this quantity, The number of iron atoms has a mass of

55.85 ⋅ g.