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Answer: the answe

Explanation: 18 cabron - c hydr3gon is  is  46.20

Answer:

It's decomposition

explanation:

The word equation that represents the violent reaction between sodium and water is as follows: sodium + water → sodium hydroxide + hydrogen.

A chemical reaction is the process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.

According to this question, sodium (Na) and water (H2O) are involved in a chemical reaction to produce sodium hydroxide (NaOH) and hydrogen gas (H2).

Therefore, the word equation that represents the violent reaction between sodium and water is as follows: sodium + water → sodium hydroxide + hydrogen

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Answer:

A

Explanation:

Answer:

Explanation:

from the way the trees look, i would say A: Wind from the sky, it seems B: Clouds and in the distance C:Precipitation(rain)

Answer:

C

Explanation:

Here's an example of displacement reaction:

2 Al (s) + 3 CuSO4 (aq) -> 3 Cu (s) + Al2(SO4)3 (aq)

note that aluminium and copper are elements,

copper II sulphate and aluminium sulphate are compound

The statement that best describes displacement reaction is an element and a compound react to form a different element and compound. The correct option is C.

When a more reactionary element displaces, or continues to push out, a less reactive element from a compound containing the less reactive element, a displacement reaction occurs.

The less reactive element is now pure and uncombined following a displacement reaction.

A single-displacement reaction occurs when a more reactive element in a compound replaces a much less reactive element.

Metal displacement, hydrogen displacement, and halogen displacement are the three types of displacement reactions.

An element as well as a compound react to form a specific component and compound, according to the best description of displacement reaction.

Thus, the correct option is C.

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Answer:

The answer is 1 x 10 - 11 M.  :))

Answer:

The volume of the solution is 3 L.

Explanation:

Molarity is a measure of the concentration of that substance that indicates the number of moles per unit volume. In other words, molarity is the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution.

[tex]Molarity=\frac{number of moles of solute}{solution}[/tex]

Molarity is expressed in units [tex]\frac{moles}{liter}=M[/tex]

In this case:

Replacing in the definition of molarity:

[tex]0.25 M=\frac{0.75 moles}{volume}[/tex]

volume*0.25 M= 0.75 moles

[tex]volume=\frac{0.75 moles}{0.25 M}[/tex]

volume= 3 L

The volume of the solution is 3 L.

Answer:

Given theoretical yield of NH3 is 945g.

The actual yield is 598g.

What is the %yield?

Explanation:

%yield of a chemical reaction can be calculated by using the formula:

[tex]%yield=\frac{actual yield}{theoretical yield} * 100[/tex][tex]\frac{actual yield}{theoretical yield} * 100[/tex]

Substitute the given values in this formula to get the %yield.

[tex]\frac{598g}{945g} * 100\\=63.3[/tex]

Hence, the %yield for the formation of ammonia is ---- 63.3.

Answer:

wood being taken for manufacturing

Answer:

2KClO3 (s) -------> 2KCl (s) + 3O2 (g)

Explanation:

Una ecuación de reacción química es una representación simbólica de lo que sucede en un recipiente de reacción.

Al escribir la ecuación de reacción química para una reacción particular, se utilizan los símbolos químicos de todas las especies involucradas.

Por la reacción. en el cual dos moléculas de Clorato de Potasio en estado sólido, al aplicar calor se descompone en dos moléculas de Cloruro de Potasio en estado sólido y tres moléculas diatómicas de Oxígeno en estado gaseoso, la ecuación de reacción se escribe así;

2KClO3 (s) -------> 2KCl (s) + 3O2 (g)

La regla para escribir ecuaciones de reacción química balanceada es que el número de átomos de cada elemento en el lado derecho de la ecuación de reacción debe ser el mismo que el número b de átomos del mismo elemento en el lado izquierdo de la ecuación de reacción.

Si realizamos un conteo de átomos simple en ambos lados de la ecuación de reacción, la regla se cumple

Answer:What did Boyle conclude about elements like gold and lead?

Explanation:

Aristotle did not believe in the atomic theory and he taught so otherwise. He thought that all materials on Earth were not made of atoms, but of the four elements, Earth, Fire, Water, and Air. He believed all substances were made of small amounts of these four elements of matter.

answer:Collisions between gas particlCollisions between gas particles or collisions with the vessel walls are perfectly elastic.

explanation:As long as an ideal gas is maintained at a constant temperature, the average kinetic energy of the molecules is said to be constant. In fact, what we call the temperature of a body at the macroscopic scale is just a representation of the kinetic energy carried by its atoms or molecules as they vibrate inside the body.

Now, if the kinetic energy of this oxygen gas is constant, it is because the collisions between the particles are assumed to be perfectly elastic. No energy is lost during the collisions. The rationale behind this assumption is that the particles are very tiny.

The answer which corresponds best to the explanation above is b. Collisions between gas particles are elastic; there is no net gain or loss of kinetic energy.

Answer:

Which of the following substances are ionic?

Check all that apply.

AlCl3

MgI2

C2H5OH

NH3

Explanation:

An ionic substance is formed between a positively charged cation and a negatively charged anion.

Ionic substances are generally formed from metal and nonmetal atoms with the metal atoms forming the cations and the nonmetal atoms forming the anions.

Among the given substances,

MgI2 is an ionic substance.

Since Mg is the metal atom. It forms a cation.

I is a  nonmetal atom. It forms anion.

Hence,

MgI2 is an ionic substance.

Though AlCl3 looks like an ionic substance it is a covalent compound.

This is due to the high polarizability of [tex]Al^3+[/tex] ion.

The remaining two compounds do not contain any metal atoms.

So, ethanol and NH3 are not ionic compounds.

Answer:

MgI2

Answer:

The size of the force varies inversely as the square of the distance between the two charges. Therefore, if the distance between the two charges is doubled, the attraction or repulsion become weaker, decreasing to one-fourth of the original value. ...The size of the force is proportional to the value of each charge.

Answer:

carboxyl group (COOH) and amines

Explanation:

The two functional group present in the shown molecule are carboxylic acid group and amine group.

Functional group is defined as a substituent or group of toms or an atom which causes chemical reactions.Each functional group will react similarly regardless to the parent carbon chain to which it is attached.This helps in prediction of chemical reactions.

The reactivity of functional group can be enhanced by making modifications in the functional group .Atoms present in functional groups are linked to each other by means of covalent bonds.They are named along with organic compounds according to IUPAC nomenclature.

Functional group inter conversion is also possible by retro -synthesis.In some cases , functional groups can be charged molecules.

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Answer:

2a. 0.401 moles de O2

b. 127.7g KClO3

c. 43.95g KCl

3. 9600g Ag2CO3 debieron haberse descompuesto

Explanation:

Basados en la reaccion:

2KCIO 3 (s) → 2KCI(s) + 3O 2

2 moles de KClO3 producen 3 moles de oxígeno:

a. 32.8g de KClO3 son:

Moles KClO3 -Masa molar: 122.55g/mol-

32.8g * (1mol / 122.55g) = 0.2676 moles KClO3

Moles O2:

0.2676 moles KClO3 * (3moles O2 / 2mol KClO3) =

0.401 moles de O2

b. 50g O2 son:

Moles O2 -Masa molar: 32g/mol-

50g O2 * (1mol/32g) = 1.5625 moles O2

Moles KClO3:

1.5625 moles O2 * (2mol KClO3 / 3mol O2) = 1.042 moles KClO3

Masa KClO3:

1.042 moles KClO3 * (122.55g/mol) =

127.7g KClO3

c. Las moles de O2 son:

28.3g O2 * (1mol / 32g) = 0.88 moles O2

Moles KCl:

0.88 moles O2 * (2mol KCl / 3mol O2) = 0.5896 moles KCl

Masa KCl -Masa molar: 74.55g/mol-

0.5896 moles KCl * (74,55g/mol) = 43.95g KCl

3. Basados en la reacción:

2Ag 2 CO 3 → 4Ag(s) + 2CO 2 (g) + O 2 (g)?

2 moles de Ag2CO3 reaccionan produciendo 4 moles de Ag. Las moles de Ag son:

Moles Ag -Masa molar: 107.8682g/mol-

7511g Ag * (1mol/107.8682g) = 69.63 moles Ag

Moles Ag2CO3:

69.63 moles Ag * (2moles Ag2CO3/4molesAg) = 34.82 moles Ag2CO3

Masa Ag2CO3-Masa molar: 275.7453g/mol-

34.82 moles Ag2CO3 * (275.7453g/mol) =

9600g Ag2CO3 debieron haberse descompuesto

Sắt oxit

Explanation:

Answer:

va/c = v a/b + v b/c

Explanation:

This is the correct formula for relative velocity

Answer:

B

Explanation:

[tex]\frac{6.626\cdot10^{-34}\cdot\left(3\cdot10^{8}\right)}{589}[/tex]= 3.37 x 10^-28 J

Carbonyl functional group contain molecule H-C-OH. Hence, option D is correct.

A functional group is a group of atoms responsible for the reactions of a particular compound.

A carbonyl group contains a double bond linking a carbonyl carbon atom and a carbonyl oxygen atom. The carbonyl oxygen atom shares six valence electrons with the carbonyl carbon atom.

Hence, the carbonyl functional group contain the molecule H-C-OH.

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Answer:

A, hydroxyl

Explanation:

Just took the test on apex and the other answer was wrong and hydroxyl was correct

Explanation:

6×1.25×37.5= 281.5 g of chlorine

1×1.25×2= 2.5 g of hydrogen

Answer:

The mass percent of hydrogen in hydrogen peroxide is 5.88

The mass percentage of hydrogen in water is 11.19 percent.

Answer:

143.9 mL

Explanation:

Applying,

PV = P'V'................. Equation 1

Where P = Initial pressure, V = Initial Volume, P' = Final pressure, V' = Final volume.

Make V' The subject of equation 1

V' = PV/P'............. Equation 2

From the question,

Given: P = 0.947 atm, V = 150 mL, P' = 750.12 mm of Hg = (750.12/760) = 0.987 atm,

Substitute these values  into equation 2

V' = (0.947×150)/0.987

V' = 143.9 mL