Draw two lewis structures for a compound with the formula c4h10. No atom bears a charge, and all carbon atoms have complete octets. Include all hydrogen atoms.

Answer:

The HCS now requires the following elements on labels of hazardous chemicals: Name, Address and Telephone Number of the chemical manufacturer, importer or other responsible party

Explanation:

I tried, I think this is the correct answer.

The reaction that is described in the question is a nuclear reaction because a change has occurred in a nucleus.

The term nuclear reaction  has to do with a reaction in which there is a transformation of the nucleus of an atom.

As such, the reaction that is described in the question is a nuclear reaction because a change has occurred in a nucleus.

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Answer:

C

Explanation:

Edge 2022

pH = - log [H⁺]

pH = - log 4.29 x 10⁻⁴

pH = 4 - log 4.29

Answer:

carbon aroms are 5

hydrogen atoms are 20

Hess’s Law describes how the heat energy of a reaction consists of the total of the energy changes of the individual step reactions.

Hess's law of constant heat summation states that the total heat changes that occur in a reaction is independent of the several intermediate pathways of the reaction, but is a sum of all the heat changes that occur.

Hess’s Law describes how the heat energy of a reaction consists of the total of the energy changes of the individual step reactions.

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Answer:

c

Explanation:

because is the measurement of amplitude

In the model of the atom, a fuzzy cloud around a hydrogen nucleus is used to represent the general region where the atom's electron is most likely located.

An atomic model is a graphic representation and/or diagram used to identify the components of atoms.

An atomic model may have into account all its components (i.e., electrons, protons, and neutrons).

In conclusion, in the model of the atom, a fuzzy cloud around a hydrogen nucleus is used to represent the general region where the atom's electron is most likely located.

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Explanation:

Critics of evolution commonly appeal to past scientific hoaxes such as the Piltdown Man forgery. It is argued that because scientists have been mistaken and deceived in the past about evidence for various aspects of evolution, the current evidence for evolution is likely to also be based on fraud and error.

From the stoichiometry of the combustion reaction, we can see that 7.4 L of oxygen is consumed.

Combustion is a reaction in which a substance is burnt in oxygen. The equation of the reaction is; C4H10O(l) + 6O2 (g) → 4CO2 (g) + 5H2O(l)

We can obtain the number of moles of CO2 from;

PV = nRT

n = 1.02 atm * 7.15 L/0.082 atm LK-1mol-1 * (125 + 273) K

n = 7.29 /32.6

n = 0.22 moles

If 6 moles of oxygen produces 4 moles of CO2

x moles of oxygen produces 0.22 moles of CO2

x = 0.33  moles

1 mole of oxygen occupies 22.4 L

0.33 moles of oxygen occupies 0.33 moles *  22.4 L/ 1 mole

= 7.4 L of oxygen

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[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

In 1 molecule of [tex] \sf{(NH_4)_2SO_3} [/tex] has 3 molecules of Oxygen. but it is given that the sample contain 6000 Oxygen atoms. therefore, the number of molecules in the sample is ~

[tex]\qquad \sf  \dashrightarrow \: \dfrac{6000}{3} [/tex]

[tex]\qquad \sf  \dashrightarrow \: 2000 \: \:molecules[/tex]

Now, there are 8 atoms of Hydrogen in each molecule, so total number of H - atoms in 2000 molecules of the given compound would have ~

[tex]\qquad \sf  \dashrightarrow \: 2000 \times 8[/tex]

[tex]\qquad \sf  \dashrightarrow \: 16000 \: \: H-atoms[/tex]

Critical mass can be achieved by compressing the sample of americium-241 and also removing the deflective shield surrounding the sample.

Critical mass of a nuclear reaction is the mass of nuclear fuel which is just sufficient for a nuclear fission reaction to proceed and be sustained.

In order to achieve critical mass, the density of the fuel is increased by compressing the sample of americium-241 and also remove the deflective shield surrounding the sample.

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Answer: A

Explanation:

The major problem with CFCs is that It is a greenhouse gas, Option A is correct.

Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine.

They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants.

CFCs are classified as halocarbons, a class of compounds that contain atoms of carbon and halogen atoms

The major problem with CFC's is that they are green house gases

It destroys ozone in the upper atmosphere (stratosphere).

CFCs can produce more than 10,000 times as much warming, pound for pound, once they are in the air.

It is not  only because of their dramatic warming potential  but also  

They were found to be the primary cause of the rapidly escalating destruction of the Earth’s ozone layer,

which protects the planet from dangerous, cancer-causing levels of ultraviolet radiation.

Therefore The major problem with CFCs is that It is a greenhouse gas, Option A is correct.

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The solution to the problem rounded to the correct number of significant figures is 32.841. Details about multiplication can be found below.

Multiplication is the process of computing the sum of a number with itself a specified number of times.

According to this question, a mathematical value of 8.01 is multiplied by 4.1.

8.01 × 4.1 = 32.841 (5 s.f)

Therefore, the solution to the problem rounded to the correct number of significant figures is 32.841.

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Answer:

Gulls, or colloquially seagulls, are seabirds of the family Laridae in the suborder Lari. They are most closely related to the terns and skimmers and only distantly related to auks, and even more distantly to waders. Until the 21st century, most gulls were placed in the genus

Electrons are moved between two substances.

A. because he might be in trouble in a play

Answer:

The motion of the molecules remains the same.

Molarity is the ratio of the moles and the volume. The mass of 2.6 M sodium phosphate solution is 2131.22 gms.

Mass is the product of the moles and the molar mass of the substance. It is given as,

Mass = Moles × Molar mass

The moles from molar concentration is used to calculate mass as:

Mass = Molarity × volume × molar mass

= 2.6 × 5.0 × 163.94

= 2131.22 gms

Therefore, 2131.22 gms is the mass of sodium phosphate.

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Sulfuric acid can dissociate into hydronium ions (H3O+) and hydrogen sulfate ions (HSO4−).

Sulfuric acid is a very strong acid which ionizes into hydronium ions (H3O+) and hydrogen sulfate ions (HSO4−) while on the other hand, in dilute solutions the hydrogen sulfate ions also dissociate, forming more hydronium ions and sulfate ions (SO42−).

So we can conclude that Sulfuric acid can dissociate into hydronium ions (H3O+) and hydrogen sulfate ions (HSO4−).

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Answer:

1/8th = 12.5%

Explanation:

Three half lives would be   1/2 * 1/2 * 1/2 = 1/8 th of original

Answer:

Energy costs are high for many school districts. Therefore, unlimited free power generated by the sun can deliver huge cost savings when compared to grid-generated power. With a modestly sized solar array, cost savings are alike modest.

Explanation:

Explanation:

the sum of potential and kinetic energy

The structure that corresponds to the molecule name - 4-heptanol would be option A.

The name, 4-heptanol, indicates that there are 7 carbon atoms in the structure.

In addition, there is also an indication that there is a functional group on the 4th carbon - the alcohol functional group.

Option B has only 6 carbon atoms instead of 7. Option A, on the other hand, fulfills all the criteria.

Thus, A is the correct structure of 4-heptanol.

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The observation in the illustration remains in accordance with the law of conservation of mass assuming that moisture is present in the container.

The law state that mass can neither be created nor destroyed. However, mass can be converted from one form to another.

In this case, the ion was placed in a container of pure oxygen. Assuming that moisture is present, iron reacts with oxygen to form rust according to the following equation:

[tex]4Fe + 3O_2 + 6H_2O --- > 4Fe(OH)_3[/tex]

The rust formed will weigh more than the initial weight of the iron.

Without the presence of moisture, one can effectively conclude that the observation violates the law of conservation of mass.

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Answer:Expert-verified answer

n(NaOH) = 0.037 moles of NaOH. HOPE THIS HELPS!!Apr 20, 2020

Explanation:

Answer:

True

Explanation:

The number of electrons are what determine an atom.

The number of electrons = number of protons

so the elements are different.

If the number of neutrons are different but the number of electrons and protons are same they are of the same element.

But here the number of protons are different so this is another element.

Answer:

. a pure substance consists only of one element or one compound.

. a mixture consists of two or more different substances, not chemically        joined together