acetylene is unstable at temperatures above ____ fahrenheit.

Answer:

discoveries that can change little aspects of our daily lives or finding cures for diseases that have hounded humanity, scientists have been hard at work trying to push us toward a brighter future.

Explanation:

thats what i got from my research :D

Methanol, also known as wood alcohol, is used as a fuel and as a solvent. Ingestion of this alcohol can lead to blindness and death.

Methanol, or wood alcohol, is a colorless liquid that is commonly used as a fuel and as a solvent in various industrial processes. It has a high toxicity level, and ingestion of even a small amount can have severe health consequences.

One of the most dangerous effects of methanol ingestion is its potential to cause blindness. Methanol is metabolized in the body to formaldehyde and formic acid, both of which are highly toxic. These substances can cause damage to the optic nerve and result in permanent vision loss if not treated promptly.

Moreover, methanol poisoning can also lead to death. When ingested, methanol is rapidly absorbed into the bloodstream and distributed throughout the body. It affects multiple organ systems, including the central nervous system, liver, and kidneys. Severe cases of methanol poisoning can cause metabolic acidosis, seizures, coma, and respiratory failure, ultimately leading to death.

Due to its high toxicity, methanol is strictly regulated, and precautions should be taken to prevent accidental ingestion. It is important to handle methanol with care, using proper protective equipment and following safety guidelines.

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Using Avogadro's number, which indicates that there are \(6.022 * 10^2^3\)formula units (atoms, molecules, or ions) in one mole of a substance, we can calculate the number of moles equivalent to \(2.4 * 10^2^3\) formula units of sodium chloride.

Given that \(6.022 * 10^2^3\) is the base of the formula for Avogadro's number per mole, we can set up a ratio to get the number of moles:

(\(2.4 * 10^2^3\)formula units) / (\(6.022 * 10^2^3\) formula units/mol)

The same number of moles can be calculated by dividing two numbers:

\((2.4 * 10^2^3) / (6.022 * 10^2^3) = 0.399 moles\)

Therefore, 0.399 moles of sodium chloride is roughly equivalent to \(2.4 * 10^2^3\) formula units of sodium chloride.

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Your question is incomplete, most probably the complete question is:

How many moles are equal to 2.4×10^23 formula units of sodium chloride

Answer:

the 24 month old

Explanation:

24 divided by the 12 months in a year is 2 and 2 compared to the 1 and a half is bigger

Answer:

Water's boiling point is higher than acetone's one due to the stronger intermolecular forces it has in liquid phase.

Explanation:

Hello.

In this case, since no options are given we can infer from the statement that due to water's higher boiling point than acetone we can conclude that when they are in liquid state, water has stronger intermolecular forces which allow its particles to be held in a stronger way in comparison to the acetone's molecules, for that reason, more energy will be required in order to separate them and promote the boiling process, which is attained via increasing the temperature. Besides, less energy will be required for the separation of the acetone's molecules in order to boil it when liquid, therefore, a lower temperature is required.

In such a way, we can sum up that water's boiling point is higher than acetone's one due to the stronger intermolecular forces it has in liquid phase.

Regards.

Answer:

1. When oil is burned, the carbon dioxide (CO2) produced comes from the carbon atoms present in the oil itself. Oil is a hydrocarbon, which means it consists of hydrogen and carbon atoms. During the combustion process, the carbon atoms combine with oxygen (O2) from the air to form carbon dioxide (CO2). So, the increased carbon dioxide in the glass container after burning the oil comes from the carbon in the oil.

2. The energy provided by soybean oil to the bus ultimately comes from the sun. Soybeans are plants that undergo a process called photosynthesis. During photosynthesis, plants use sunlight, water, and carbon dioxide from the air to produce glucose (a type of sugar) and oxygen. The glucose serves as an energy source for the plant and is stored in various forms, including oils like soybean oil. So, the energy in soybean oil can be traced back to the sun's energy captured by the plants during photosynthesis. The sun's energy is converted into chemical energy through this process, which is then transferred to the soybean oil.

Explanation:

so the other guy can have branliest have a wonderful summer guys! :)

Based on the excerpt provided, Capulet's attitude can be characterized as assertive and controlling.

He insists that Juliet marry Paris, showing little concern for her feelings or desires. Capulet's tone is forceful and authoritarian, indicating that he expects Juliet to obey his commands without question. He uses harsh language, such as calling her a "disobedient wretch," to intimidate and threaten her into compliance. Overall, Capulet's attitude reflects a patriarchal society in which fathers hold absolute power and control over their daughters' lives. The Capulet's attitude in the excerpt can be most closely characterized as authoritative and strict. As the head of the Capulet family, he demands respect and obedience from his family members and expects them to follow his decisions without question. This attitude is evident in his interactions with Juliet, as he insists on her marrying Paris despite her objections.

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0.0986 g of potassium acetate is needed to make the desired buffer solution.

To calculate the mass of potassium acetate needed to form a buffer solution, we need to use the Henderson-Hasselbalch equation:

pH = pKa + log([A⁻]/[HA])

where pH is the desired pH of the buffer solution, pKa is the acid dissociation constant of acetic acid, [A⁻] is the concentration of the conjugate base (acetate ion) and [HA] will be the concentration of the weak acid (acetic acid).

Rearranging this equation, we can solve for the ratio of [A⁻]/[HA]:

[A⁻]/[HA] =\(10^{(pH-pKa)}\)

Substituting the given values, we have:

[A^-]/[HA] = \(10^{(4.68-4.76)}\) = 0.767

The total concentration of the buffer (acetic acid and acetate ion) should be equal to the desired concentration of the buffer, which is the same as the concentration of acetic acid given in the problem:

Total concentration = [A⁻] + [HA] = 0.010 M

We can use these two equations to solve for the concentrations of acetate ion and acetic acid:

[A⁻] = 0.767 / (0.767 + 1) x 0.010 M = 0.0076 M

[HA] = 0.010 M - 0.0076 M = 0.0024 M

Now, we can use the molar mass of potassium acetate to calculate the mass needed to make the desired buffer solution:

Molar mass of KC₂H₃O₂ = 98.14 g/mol

Mass of KC₂H₃O₂ = moles x molar mass

Moles of KC₂H₃O₂ = [A⁻] x volume / 1000

Volume is 132 mL = 132/1000 = 0.132 L

Moles of KC₂H₃O₂ = 0.0076 M x 0.132 L = 0.0010032 moles

Mass of KC₂H₃O₂ = 0.0010032 moles x 98.14 g/mol

= 0.0986 g

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Answer:

i want to see a pic but if you got nice toes all give you my number

Explanation:

Answer:

nah Im good

Explanation:

single forever

We can make a 0.25 M solution with a volume of 200 mL from the stock solution.

We can use the dilution formula to fix this issue:

C1V1 = C2V2

where C1 and V1 represent the initial (stock) solution's concentration and volume, and C2 and V2 represent the end (diluted) solution's concentration and volume.

In order to write: "We want to determine the volume of a 0.25 M solution that can be created from the stock solution."

C2 = 0.25 M V2 =? where C1 = 1.00 M and V1 = 50 mL.

Using the dilution formula with these values as input, we obtain:

0.25 M x V2 = 1.00 M x 50 mL

If we simplify, we get:

50 mL = 0.25 M x V2

The result of dividing both sides by 0.25 M is:

V2 = 200 mL

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We know that,

acceleration (a) = final velocity(V)-initial velocity(U)/ Time taken(T)

Saturated hydrocarbons are major components of gasoline. The correct option is C.

Saturated hydrocarbons are those hydrocarbons in which the carbon atoms is attached with hydrogen atom with only single bond. They are the simplest form of hydrocarbons. Much hydrogen is attached to one carbon.

Thus, the correct option is C, gasoline.

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Saturated hydrocarbons are major components of gasoline.

Alkanes are saturated hydrocarbons, chemical molecules with solitary carbon-atom bonds. Petroleum, natural gas, and coal contain them, as do many industrial and home items. Heating, cooking, and transportation employ saturated hydrocarbons, which burn easily. They are less reactive than unsaturated hydrocarbons because they lack double or triple bonds.

Saturated hydrocarbons are CnH2n+2, where n is the number of carbon atoms. Methane (CH4), a colourless, odourless gas, is the simplest alkane. Tetracontane (C40H82), a solid at ambient temperature, is the biggest. The structure and amount of carbon atoms of saturated hydrocarbons determine their physical and chemical characteristics.

Saturated hydrocarbons make polymers, rubber, and solvents. Lubricants, cosmetics, and pharmaceuticals utilise them. Saturated hydrocarbons emit greenhouse gases when burned, leading to global warming and climate change.

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In the given reaction Stoichiometric relationship between ammonium hydroxide and phosphoric is that 3 moles of ammonium Hydroxide is added with 1 mole of phosphoric acid in order to form 1 mole of Ammonium Phosphate and 3 moles of water.

In the given reaction Stoichiometric relationship between ammonium hydroxide and phosphoric is that 3 moles of ammonium Hydroxide is added with 1 mole of phosphoric acid in order to form 1 mole of Ammonium Phosphate and 3 moles of water.

Thus, from the above conclusion we can say that,In the given reaction Stoichiometric relationship between ammonium hydroxide and phosphoric is that 3 moles of ammonium Hydroxide is added with 1 mole of phosphoric acid in order to form 1 mole of Ammonium Phosphate and 3 moles of water.

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Answer:

1.818x10²³ particles

Explanation:

Add the two atomic masses given to get 74.55 g.

Divide the number of grams given by the molar mass of KCl:

22.5g ÷ 74.55 = 0.302 mol

Multiply the moles by 6.022×10²³ particles

Answer:

C The humidity decreases

Explanation:

So, if the temperature drops so the humidity decreases so the moisture dops from what it was before.

The given statement "organic chemistry is study of chemistry of compounds which contain primarily carbon and hydrogen" is true. Because, Organic chemistry is the study of compounds which contain primarily carbon and hydrogen due to the unique properties and bonding behavior of carbon.

Carbon has the ability to form stable covalent bonds with itself and other elements, allowing for the formation of a vast number of organic compounds. These compounds can vary greatly in their structures and properties, providing a rich and diverse field of study.

Carbon atoms have four valence electrons, which allows them to form strong covalent bonds with other atoms, including other carbon atoms, hydrogen, and a variety of other elements. Carbon can form single, double, and triple bonds, as well as branched and cyclic structures, resulting in a wide range of organic compounds with different functional groups and properties.

Furthermore, carbon-based compounds are fundamental to life as they are the building blocks of biological molecules, such as carbohydrates, lipids, proteins, and nucleic acids. Organic chemistry plays a crucial role in understanding the structure, properties, and reactions of these biomolecules, as well as the development of drugs, materials, and technologies.

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Answer:

Pull with less force, Add an apple to the basket, and Roughen the surface of the table to increase friction

Explanation:

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Answer to Question #96220 in Molecular Physics | Thermodynamics for Kaleesh

Answers>Physics>Molecular Physics | Thermodynamics

Question #96220

a) Determine the enthalpy changes, ΔH for the reaction below, given the following reactions and subsequent ΔH values. Please rewrite the amended chemical reaction equation again.

N2H4 (l) + CH4O (l) CH2O (g) + N2 (g) + 3H2 (g)

2NH3 (g) N2H4 (l) + H2 (g) ΔH = 22.5kJ

2NH3 (g) N2 (g) + 3H2 (g) ΔH = 57.5 kJ

CH2O (g) + H2 (g) CH4O (l) ΔH = 81.2 kJ

b) Given that the enthalpy of vaporization for water as below:

H2O (l) H2O (g) ΔH vap = 44.0 kJ mol-1

Calculate enthalpy ΔH for each of the following processes:

i) Evaporating 3.00 moles of water

ii) Evaporating 3.00 grams of water

i) Condensing 20.0 grams of water

(3 Marks)

c) Use the enthalpy of formation data to calculate the enthalpy of the reaction below.

2C2H6 (g) + 7O2 6H2O (g) + 4CO2 (g)

Answer: yes the atomic number goes on top of the symbol or does the mass number go on top

Explanation: yes the atomic number goes on top of the symbol or does the mass number go on top

Answer:

455.4 mmHg

Explanation:

To solve this problem we can use Gay Lussac's Law, which describe the temperature and pressure of a gas, at constant volume and composition:

In this case:

We input the data:

And solve for P₂:

Comets are icy bodies that originate from the outer solar system and are known for their distinctive tails. As they approach the sun, they heat up and release gas and dust that creates a glowing tail that can be visible from Earth.

Celestial objects are objects that exist in space, outside of Earth's atmosphere. They include a wide variety of natural entities, such as stars, planets, moons, asteroids, comets, and galaxies.

Comets and meteors are both celestial objects that can be seen moving through the sky, but they have distinct differences in their characteristics.
Comets are icy bodies that originate from the outer solar system and are known for their distinctive tails. As they approach the sun, they heat up and release gas and dust that creates a glowing tail that can be visible from Earth. Comets also have elliptical orbits and can take years or even centuries to complete a single orbit.
On the other hand, meteors are small particles of dust or rock that burn up upon entering Earth's atmosphere, creating a streak of light in the sky. They are often referred to as shooting stars or falling stars. Unlike comets, meteors do not have a tail and do not originate from the outer solar system. They are typically associated with meteor showers, which occur when Earth passes through a stream of debris left behind by a comet or asteroid.
In summary, while both comets and meteors can be seen moving through the sky, comets are icy bodies with distinctive tails that originate from the outer solar system and have elliptical orbits, while meteors are small particles of dust or rock that burn up upon entering Earth's atmosphere, creating a streak of light in the sky.

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Soaps clean up dirt by acting as emulsifying agents. The nonpolar chain in the soap is attracted to the dirt and the ionic end is attracted to the water. Thus, the soap creates b)dispersed droplets that wash the dirt away with the water.

In the field of chemistry, soap can be described as a washing material that is made by adding a base to a fat or oil.

As it contains fats and oils, soaps work by acting as an emulsifying agent.

The non-polar fats and oil absorb any kind of dirt and kill microorganisms.

When water is added to soap, the mixture acts as a dispersed droplet to absorb dirt particles in it. In this way, any kind of dust, microorganisms and dirt are removed.

The correct question format is:

Soaps clean up dirt by acting as emulsifying agents. The nonpolar chain in the soap is attracted to the dirt and the ionic end is attracted to the water. Thus, the soap creates ............. that wash the dirt away with the water.

a) floating bubbles

b) dispersed droplets

c)solid precipitate

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Answer:

45 °C.

Explanation:

From the question given above, the following data were obtained:

Heat (Q) = 1125 J

Mass (M) = 250 g

Final temperature (T₂) = 55 °C

Specific heat capacity (C) = 0.45 J/gºC

Initial temperature (T₁) =?

The initial temperature of the iron can be obtained as illustrated below:

Q = MC(T₂ – T₁)

1125 = 250 × 0.45 (55 – T₁)

1125 = 112.5 (55 – T₁)

Divide both side by 112.5

1125/112.5 = 55 – T₁

10 = 55 – T₁

Collect like terms

10 – 55 = –T₁

–45 = –T₁

Multiply through by –1

45 = T₁

T₁ = 45 °C

Therefore, the initial temperature of the iron is 45 °C

Answer:

9.370 x 10 to the 23 molecules

Explanation:

91.72/1 x 1 mole Co/58.933g x 6.02 x 10 to the 23/1 mole Co

Answer:

Explanation:

Mass 1 mole of CO

C = 12

O = 16

m = 28

Mols of 91.72 grams

m = given Mass / Molar Mass

m = 91.72 / 28

m = 3.28 mols

Molecules

1 mol of anything is 6.02 * 10^23 molecules (in this case)

3.28 mol of CO = x

1/3.28 = 6.02*10^23/x      Cross multiply

x = 3.28 * 6.02 * 10^23

x = 1.97 * 10^24

The filtration technique can be used by Lucan to separate the mixture.

Filtering is a physical separation procedure that uses a filter media with a complicated structure that only allows fluid to flow through it to separate solid particles and liquid from a combination. Filtrate is the term for the fluid that passes through large solid particles that cannot pass through the filter medium.

The procedure for utilizing filtration to separate the mixture is as follows:

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Ionic compounds is the simplest form of a crystalline solid. Crystalline solids are solids that are characterized by a repeating, three-dimensional arrangement of atoms or molecules.

These solids have a long-range order and are typically made up of a large number of individual units called "unit cells." Ionic compounds are compounds that are made up of ions, which are atoms or molecules that have a positive or negative charge due to the gain or loss of electrons. Ionic compounds typically have simple, symmetrical crystal structures, with the ions arranged in a regular, repeating pattern. Halogens, non-metals, and metals can also form crystalline solid, but their crystal structures tend to be more complex than those of ionic compounds. The geometrical shape of macroscopic single crystals, which consists of flat faces with discrete, differentiating orientations, can also be used to identify them. Science's study of crystals and their formation is known as crystallography. The process of crystal growth through processes is referred to as either crystallization or solidification.

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Effective nuclear charge (Zeff) is the amount of positive charge that is experienced by an electron in an atom.

The greater the effective nuclear charge, the greater the attraction between the valence electrons and the nucleus, resulting in a smaller atomic size.

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The elements with the largest effective nuclear charge are fluorine (F), oxygen (O), nitrogen (N), and carbon (C).

The effective nuclear charge refers to the net positive charge experienced by an electron in an atom. It is determined by the number of protons in the nucleus and the shielding effect of inner electrons. The effective nuclear charge increases across a period from left to right in the periodic table due to the increasing number of protons. This means that as you move from left to right across a period, the elements have a larger effective nuclear charge.

However, within a group, the effective nuclear charge remains relatively constant as the increase in protons is offset by an increase in shielding electrons. This means that elements in the same group have similar effective nuclear charges.

The elements with the largest effective nuclear charge are found in the top right corner of the periodic table. These elements include fluorine (F), oxygen (O), nitrogen (N), and carbon (C). They have the highest effective nuclear charges among the elements.

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The best evidence that the moon has been extensively heated is the lack of volatiles.

The following are the characteristics of the Moon

:Mass of the moon.Lack of iron core.

Oxygen isotopes like the Earth.

Lack of volatiles.

Volatiles are materials with low boiling points that exist in solid or liquid form at the Earth's surface. Water and carbon dioxide are two examples of volatile materials. The lack of volatiles on the moon is a strong indication that the moon was subjected to high temperatures. It also indicates that volatiles have been expelled from the moon's surface due to the loss of gas molecules that occurred as a result of the heat. As a result, the absence of volatiles is the best evidence that the Moon has been extensively heated.

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