What are 2 scientist classify organisms into groups

The density of gas can change, in contrast to the density of solids or liquids. This is due to the fact that gas is not compact and that temperature and pressure have an impact on its molecules.

The formula is d = MP/RT, where d is the gas's density in kilograms per liter, M is its molar mass in grams per mole, P is its pressure in atmospheric pressure units, and R is the gas law constant. The equation demonstrates that the molar mass increases as gas density increases. The pressure and temperature parameters for the gas determine the gas's density. Gas can dramatically alter its volume with a change in pressure due to its strong compressibility. Therefore, changes in density (at low pressure) can be substantial.

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Petroleum, being a fossil fuel, is spread unevenly throughout the earth's crust. Hence, option d is the correct answer: spread unevenly, with some places having none.

The distribution of petroleum is largely dependent on the geological history of an area, with areas that were once under ancient oceans or lakes having a higher likelihood of containing petroleum deposits. This has led to countries such as Saudi Arabia, Venezuela, and Canada having large reserves of petroleum, while other regions such as Europe and Africa have smaller reserves or none at all. The uneven distribution of petroleum has significant economic and geopolitical implications, with countries that possess large reserves having greater global influence and wealth.

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Using the periodic chart, you may approximate an element's atomic mass. On the periodic table, the atomic mass of each element is stated in units of atomic mass.

The weighted average mass of all the naturally occurring isotopes of that element is represented by this value. Simply look up an element's atomic symbol on the periodic table & read the atomic mass that is stated next to it to get its atomic mass.

The periodic chart typically gives the atomic mass to the closest whole integer, while it occasionally may be presented to one or two decimal places. The atomic mass indicated on the periodic table is an aggregate of the masses, which is a crucial point to remember.

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Bohr combined the discoveries of regularities in the hydrogen spectrum, the existence of the electron, and knowledge of the atom's nucleus to create his model of the atom.

Bohr's model of the atom was based on several key discoveries in physics, including regularities in the hydrogen spectrum, the existence of the electron, and knowledge of the atom's nucleus. The discovery that light emission and absorption only occurred in discrete chunks was also an important factor in Bohr's model.

By combining these findings, Bohr was able to create a model of the atom that accounted for the behavior of electrons and their interactions with the nucleus. The model also explained the regularities observed in the hydrogen spectrum and provided a framework for understanding the behavior of atoms in different states. Overall, Bohr's model was an important step in the development of atomic theory and helped to establish the foundation for modern physics.

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Answer: the answer is ch3ch2ch3 would have the fewest intermolecular forces with only dispersion forces

Explanation:

The total number of calories required to melt 100 grams of ice exists

33.4kJ.

The specific latent heat (L) of material exists as a measurement of the heat energy (Q) per mass (m) released or soaked during a phase transition and exists described through the formula Q = mL exists often just named the "latent heat" of the material.

Let the equation be Q = Lm

where Q exists the amount of heat required to melt the ice

L or \(L_{ice}\) exists as the Latent Heat of melt for ice.

\(L_{ice} = 3.34*10^5\) J/kg

m exists the mass of ice that exists to melt.

m = 100g = 0.1kg.

So: Q = 3.34⋅\(10^5\) J/kg.0, 1kg = 33,400J = 33.4kJ.

The total number of calories required to melt 100 grams of ice exists

33.4kJ.

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The percentage yield is equal to 200.6%.

The balanced equation for the given chemical reaction is :

2C2H + 5O2 → 4CO2 + 2H2O

Let's find the limiting reagent:

Mass of C2H = 120 g

Mass of O2 = 288 g

Molar mass of C2H = 26 g/mol

Molar mass of O2 = 32 g/mol

The number of moles of C2H is equal to:

120 g × 1 mol/26 g = 4.62 mol

The number of moles of O2 is equal to:

288 g × 1 mol/32 g = 9 mol

According to the stoichiometry of the balanced equation, 2 moles of C2H react with 5 moles of O2, so:

If 4.62 moles of C2H is used, then the required amount of O2 would be:

5/2 × 4.62 mol = 11.6 mol

We only have 9 mol of O2 which means it is the limiting reagent.

C2H is the excess reagent.

Let's find the mass of water produced:

According to the stoichiometry of the balanced equation,2 moles of H2O is produced per 2 moles of C2H2 moles of H2O is produced per 5 moles of O2If 9 mol of O2 is used, the number of moles of water produced would be:

2/5 × 9 mol = 3.6 mol

The mass of water produced is equal to:

3.6 mol × 18 g/mol = 64.8 g

Therefore, 64.8 g of water can be produced.

The amount of excess reagent is equal to:

4.62 mol - 2/2 × 9 mol = 4.62 - 9

= -4.38 mol

C2H is the excess reagent and it is not possible to have negative amount of a substance.

So, we assume that there is no excess reagent.

If 130 grams of water is produced, then the percentage yield is equal to:

Percent yield = actual yield/theoretical yield × 100

Theoretical yield is equal to 64.8 g

Actual yield is equal to 130 g

Percent yield = 130/64.8 × 100

= 200.6%

Therefore, the percentage yield is equal to 200.6%.

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The compound A is 2-methylpropene (\(C_4H_8\)). It reacts with cold aqueous sulfuric acid to form compound B, which is tert-butanol (\(C_4H_{10}O\)). When B is treated with sodium metal in dry THF (tetrahydrofuran) followed by methyl iodide, it undergoes Williamson ether synthesis to produce t-butyl methyl ether.

2-methylpropene (A) has the molecular formula \(C_4H_8\). It is an unsaturated hydrocarbon with a double bond between the second and third carbon atoms. When A reacts with cold aqueous sulfuric acid, an addition reaction occurs, where water is added across the double bond. This leads to the formation of tert-butanol (B), also known as 2-methyl-2-propanol, with the molecular formula  (\(C_4H_{10}O\)).

B (tert-butanol) is then treated with sodium metal in dry THF, which is a common reaction condition for the deprotonation of alcohols. This reaction forms the tert-butoxide ion, which is a strong nucleophile. In the next step, methyl iodide is added, which undergoes an \(SN_2\)  reaction with the tert-butoxide ion. The resulting product is t-butyl methyl ether, also known as methyl tert-butyl ether (MTBE), with the molecular formula \(C_5H_{12}O\).

In summary, A is 2-methylpropene (\(C_4H_8\)), which reacts with cold aqueous sulfuric acid to form B, tert-butanol (\(C_4H_{10}O\)). When B is treated with sodium metal in dry THF and methyl iodide, t-butyl methyl ether (\(C_5H_{12}O\)) is produced.

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Answer:

B. A possible explanation for why something happens.

Explanation:

By the process of elimination, it's none of the others but B.

Explanation:

2Al(OH)3 + 3H2SO4 --> Al2 (SO4)3 + 6H2O

The pH of a solution can be calculated from the concentration of hydroxide ions using the formula pH = -log[H+]. In this case, the pH of the solution with an [OH-] concentration of 3.94e⁻⁵ M is approximately 9.6.

The concentration of hydroxide ions [OH-] in the solution is 3.94e⁻⁵ M.

The pH of a solution can be calculated using the formula:

pH = -log[H+]

where [H+] is the concentration of hydrogen ions in the solution. To find [H+], we can use the fact that in any aqueous solution at room temperature,

[H+][OH-] = 1.0 × 10⁻¹⁴

Rearranging this equation to solve for [H+], we get:

[H+] = 1.0 × 10⁻¹⁴ / [OH-]

Substituting the given value for [OH-], we get:

[H+] = 1.0 × 10⁻¹⁴ / 3.94e⁻⁵

[H+] = 2.54 × 10⁻¹⁰ M

Now we can use this value to calculate the pH:

pH = -log[H+]

pH = -log(2.54 × 10⁻¹⁰)

pH = 9.595

Therefore, the pH of the solution is approximately 9.6.

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Answer:

#1

Chemical symbol is

\(\\ \rm\rightarrowtail _1^3H\)

#2

Its Deuterium

Answer:

5

Explanation:

the numbers go up by 5

Answer: b. statement 1 and 2 are true; statement 3 is false

Explanation:
Statement 1 is true because when carrying hazardous materials, a transportation mode must carry shipping papers. These papers contain important information about the materials being transported, ensuring proper handling and safety measures.

Statement 2 is true because shipping papers may include a packing group number listed as I, II, or III. These numbers represent different levels of danger for the hazardous materials.

Statement 3 is false because the lower the packing group number (I, II, or III), the more dangerous the chemical is. Packing Group I represents the highest level of danger, while Packing Group III represents the lowest level of danger.

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Answer:

If a Maritime Tropical Air mass begins in the Southern United States and keeps traveling North directly over the central USA, it will turn into a polar air mass.

Explanation:

because Northern USA is colder than the South :)

Answer:

I'm pretty sure is a mixture

Answer:skin cream

Explanation:

the independent variable is the variable that is always changed or manipulated. in this case the skin cream is the independent variable.

Answer:

96 Zr

Explanation:

just took the quiz and that was the right answer

Answer: A. pH + pOH = 14

Explanation:

I got it right on the test. Hope this helps!! :)

Answer:

Marine debris comes from many different sources and enters the ocean in many ways. Intentional littering and dumping are a big cause of marine debris. ... Those rivers and streams can eventually carry the trash to the ocean. Improper or careless waste disposal is another big cause.

hope this helps

have a good day :)

Explanation:

Answer:

january

Explanation:

it is in january

Answer:

d

Explanation:

the reason is you have Cu S and O

Answer:

1.An increment of predators

2.unavailability of food resources due to change in climate causing famine

3.Spread of diseases over time that might kill the squirrels

4.An increment of squirrels which caused high competition on food,thus some of them had to migrate

5.Might be fire break out over some time that caused death to some squirrels in the reasoning of the period of time

The Omnipotent view of management refers to the belief that managers are directly responsible for an organization's success or failure. According to this view, managers have the power and control to make decisions that will significantly impact the organization's performance.

In terms of the organizational environment, ABC CO needs to focus on several aspects. Firstly, it should prioritize building strong relationships with customers by understanding their needs and delivering value through its products or services. Secondly, maintaining good relationships with suppliers is crucial to ensure a reliable supply chain and access to necessary resources. Thirdly, keeping a close eye on competitors is essential to stay competitive and identify opportunities for differentiation. Lastly, monitoring and adapting to economic, legal, and socio-cultural factors is vital to ensure compliance with regulations and aligning the organization with societal trends and expectations.

In conclusion, the Omnipotent view of management emphasizes the influence of managers in shaping organizational outcomes, while the Symbolic view recognizes the significance of external factors. For the current state of ABC CO, a balanced approach that considers both internal and external factors would be beneficial. The culture should promote collaboration, innovation, and adaptability, while the organization should focus on building strong relationships with customers, suppliers, and competitors while adapting to the economic, legal, and socio-cultural environment.

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Answer:

The answer will be B

Explanation:

Answer:

B.the neutron in the nucleus

Explanation:

Answer:

74g.

Explanation:

The volume won't increase by the volume of salt you added, though. This is for many different reasons among them the fact that salt is in grains (with lots of air in between) and the salt dissolving in the water and kind of squeezing in the spaces between water molecules. But the mass should increase by exactly the 19g you added.

Answer:

3.) 195

Explanation:

Because platinum is 195.079 amu (its on the periodic table)

A purple box has P t at the center and 78 above. Below it says platinum and below that 195.08. Rounded to the nearest whole number, 195 is the atomic mass of platinum. Therefore, option C is correct.

The number of protons an element contains determines its atomic number, which is used to distinguish one element from another. The total number of protons and neutrons in an element determines its mass number.

The mass number is the total number of protons and neutrons in the nucleus. This is due to the fact that each proton and neutron has a mass of one atomic mass unit (amu). You can determine the mass of the atom by multiplying the total number of protons and neutrons by 1 amu.

Because its numerical value is equal to the element's molar mass, the average atomic mass is helpful. In turn, this helps determine how much of a solid.

The atomic mass of platinum is 195. Because atomic mass is always the bottom number below the name of the element.

Thus, option C is correct.

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