why do chemical equations have to be balanced ?

Answer:

A 16

B 30

C 2-

D sulphur

E ion

F. ( 30/16S2-)

Explanation:

Answer:

they will prevent superheating of the liquid being distilled and they will cause a more controlled boil, eliminating the possibility that the liquid in the distillation flask will bump into the condenser.

Explanation:

hope this helps :3

Answer: 66 atoms, I believe.

5.5 times 12/dozens  + 66 Atoms

Hope this helps!

(5.5 dozen) x (12 atoms/dozen) = 66 atoms

Answer:

Carbon dioxide or co^2

Explanation:

A period is a horizontal row of the periodic table. There are seven periods in the periodic table, with each one beginning at the far left. ... A group is a vertical column of the periodic table, based on the organization of the outer shell electrons. There are a total of 18 groups.

Answer:

did you have options, cause if you did chose something alond the lines of

Explanation:

A real gas is a gas that does not behave as an ideal gas due to interactions between gas molecules. A real gas is also known as a nonideal gas because the behavior of a real gas in only approximated by the ideal gas law.

Answer:

  1950 grams

Explanation: The mass  of potassium that  must react  with water to  produce   50.0  grams of H2  is    1950 grams

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 40 × 2

We have the final answer as

Hope this helps you

[tex]sp^{3}[/tex] orbital have less electron density than p orbital. Therefore on overlap of s orbital with [tex]sp^{3}[/tex] less repulsion take place than overlapping of sp3 orbital.

Electronegativity depends on s character.

In [tex]sp^{3}[/tex]  there is hybridization between one s and 3 p orbital. Therefore,   [tex]sp^{3}[/tex]have 25% of s character .

In p orbital , there is no s orbital present. Therefore s character is p orbital is [tex]0[/tex]% .

Higher the electronegativity means higher tendency to attract electron.

Thus, bond form by overlap of [tex]sp^{3}[/tex] and [tex]s[/tex] will be stronger than bond formed by overlap of [tex]s[/tex] with [tex]p[/tex].

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Answer:

stem cells

Explanation:

hope it helps

The percent iron in the sample of ore is 27.30% .

The mass of Fe₂O₃ contains both iron and oxygen. First, we determine the amount of iron present in this compound. Then, when the mass of iron is conserved, the amount of iron present in the original ore will be the same.

Percentage iron in Fe₂O₃ = (2 * 56) * 100 / (2 * 56 + 3 * 16) = 70%

Therefore, out of the 13.3 grams of Fe₂O₃,

13.3 x 0.7 = 9.31 grams is iron

In the original ore, the percentage of iron is given by:

(9.31 x 100) / 34.1

The original ore had 27.30% iron.

A distinct substance created by the chemical union of two or more ingredients in a predetermined weight proportion to create a new antibiotic compound is an example of something that is created by the union of elements or parts.  a word made up of parts that are words (such as rowboat, high school, devil-may-care).

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Answer:

.

Explanation:

Let us assume that the bubble is h meters below the surface of the water, and P₀ is the atmospheric pressure.

Pressure only due to water at a depth of h meters would be equal to ρgh. Also, atmospheric pressure would be acting on the bubble. So, the total pressure on the gas bubble at that depth = P₀+ρgh=ρg×10+ρgh=ρg(h+10).

At the surface of water, only atmospheric pressure would be acting on the bubble i.e. P=P₀=ρg×10

As PV = constant, ρg(h+10)×V=ρg10×8V→h+10=80→h=70 meters.

Hence70m is the answer.Answer:

Explanation:

Considering the definition of atomic mass, isotopes and atomic mass of an element, sb121 has a percent natural abundance of 0.5726 or 57.26% and sb123 has a percent natural abundance of 0.4284 or 42.84%.

The atomic mass is obtained by adding the number of protons and neutrons in a given nucleus of a chemical element.

Isotopes are the chemical elements in which atomic numbers are the same, but the number of neutrons is different.

The atomic mass of an element is the weighted average mass of its natural isotopes.

This is, the atomic masses of elements are usually calculated as the weighted average of the masses of the different isotopes of each element, considering the relative abundance of each of them.

In this case, antimony has two naturally occuring isotopes, sb121 and sb123. You know:

The average mass of antimony is expressed as:

121.7601 u= 120.9038 u x + 122.9042 u× (1 -x)

Solving:

121.7601 u= 120.9038 u x + 122.9042 u - 122.9042 u x

121.7601 u - 122.9042 u= 120.9038 u x - 122.9042 u x

(-1.1441 u)= (-2.0014) x

(-1.1441 u)÷ (-2.0014)= x

0.5726= x or 57.26%

So, 1 -x= 1- 0.5716 → 1-x= 0.4284 or 42.84%

Finally, sb121 has a percent natural abundance of 0.5726 or 57.26% and sb123 has a percent natural abundance of 0.4284 or 42.84%.

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Answer:

Atomic number

Protons

Explanation:

Elements generally have specific atomic number of protons they are made up of.

An element is a distinct substance that cannot be split-up into simpler substances. Such substance are made up of only one kind of atom.

The balanced chemical equation showing the reaction between iron (iii) oxide and carbon monoxide to form iron (ii) oxide and carbon oxide is :

                    FE2O3 + 3CO → 2FE +3CO2

Unbalanced:

                    Fe2O3 + CO → Fe + CO2

The atoms of iron on the reactant side is 2 but on the product side is 1, so have to change the coefficient of the iron of the product side. Place 3 with the CO in reactants and 3 with CO2 on the product side.

A balanced chemical equation is defined as the number of atoms of each type in the reaction being equal to the reactants and product sides.

The mass and charge is equal in a balanced chemical reaction.

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A balanced chemical equation, which demonstrates that all mass is conserved throughout the reaction, demonstrates the law of conservation of mass. The quantity and types of atoms on either side of a chemical equation should be equal in a balanced chemical equation.

In accordance with the principle of mass conservation, There is neither creation nor destruction of mass during a chemical process. In other words, the total masses of the reactants and products must be equal.

The reactants of photosynthesis are sunlight, 6 carbon dioxide, and 6 water. The mass of the products, which are 1 glucose and 6 oxygen, is equal to the mass of these reactants added together. Contrarily, cellular respiration uses glucose and oxygen gas to create water, carbon dioxide, and ATP, a source of useable energy.

The products of photosynthesis are the reactants of cellular respiration, which is the reverse of photosynthesis. The law of conservation of mass is also observed during cellular respiration.

A balanced chemical equation, which demonstrates that all mass is conserved throughout the reaction, demonstrates the law of conservation of mass. The quantity and types of atoms on either side of a chemical equation should be equal in a balanced chemical equation.

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Answer:

My best guess would be organic compounds, good luck.

The term "organic" best describes the compound with chains of carbon atoms.  

Option (D) is correct.

Organic compounds are characterized by containing carbon-hydrogen (C-H) bonds and often involve complex carbon-based structures. These compounds are typically associated with living organisms and are essential building blocks of life.

The presence of chains of carbon atoms indicates a molecular structure based on carbon-carbon bonds, which is a fundamental feature of organic compounds. In contrast, inorganic compounds generally lack carbon-hydrogen bonds and are typically simpler substances. Terms like "polar," "ionic," and "inorganic" do not specifically capture the essence of a compound consisting of carbon chains.

Therefore, the term "organic" accurately represents the nature of the compound and its connection to carbon-based chemistry and living systems.

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The question is incomplete. The complete question is:

A compound contains chains of carbon atoms.

Which term best describes this compound?

A) polar

B) inorganic

C) ionic

D) organic

Answer:

well, the speed is 343 m/s at 20 degrees Celsius

distance=speed*time

=343m/s *5s

=1715m

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{3.55 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.05897...[/tex]

We have the final answer as

Hope this helps you

An appealing technique called chemical looping reforming with CO2 splitting (CLRS) can be utilised to transform hydrocarbons into syngas, an essential industrial intermediate that can be used as a raw material for other products with added value. The partial oxidation of methane occurs using the oxygen carrier that supplies lattice oxygen, not molecular oxygen, according to the chemical looping method.

Syngas is flammable and usable as fuel. In the past, it has been used to replace gasoline when supplies are scarce; for instance, wood gas was utilised to power automobiles in Europe during World War II (in Germany alone half a million cars were built or rebuilt to run on wood gas).

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Answer:

Nature friendly activities include:

Hope it helps!

Answer:

107.64L

Explanation:

V= Volume in Liter

T= Temp in Kelvin (degrees celcius + 275)

N= # Mols

P= Pressure

R= Gas Constant for atm is .0821

so

for P

V=NRT/P

(4x,0821x295)/.900=107.64L