for gasses at stp (273 k and 1 atm pressure, one mole occuies a volume of 22.4l. what volume will the following quianities of gases occupy at stp

Answer:

The answer of this question is molecule

The cultures of prehistoric humans are primarily known through the excavation of stone tools and other durable artifacts, such as the Oldowan and Acheulian tool traditions.

Stone tools and imperishable artifacts serve as key archaeological evidence for understanding prehistoric cultures. Through meticulous excavation and analysis, archaeologists have been able to piece together the lifestyles, technological advancements, and social behaviors of early human societies. The term "paleolithic" refers to the Old Stone Age, a time when humans relied on stone tools as their primary implements.

The Oldowan tool tradition is considered the earliest stone tool industry, dating back around 2.6 million years ago. It is characterized by simple tools, such as choppers and scrapers, which were crafted by flaking off pieces from larger stones. These tools were primarily used for basic activities like butchering and processing animal carcasses.

Later, the Acheulian tool tradition emerged around 1.76 million years ago, representing an advancement in stone tool technology. Acheulian tools, such as handaxes and cleavers, were more refined and standardized, showcasing an increased level of sophistication in tool-making techniques. These tools served a wide range of purposes, including hunting, woodworking, and shaping raw materials.

By studying the Oldowan and Acheulian tool traditions, researchers gain valuable insights into the cognitive abilities, cultural development, and technological progress of early humans. The examination of these artifacts provides evidence of their adaptability, problem-solving skills, and the gradual refinement of their tool-making techniques over time.

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The byprοducts in this reactiοn are acetic acid (οptiοn A) and ethanοl (οptiοn C).

In acid catalysis and base catalysis, a chemical reactiοn is catalyzed by an acid οr a base. By Brønsted–Lοwry acid–base theοry, the acid is the prοtοn (hydrοgen iοn, H+) dοnοr and the base is the prοtοn acceptοr. Typical reactiοns catalyzed by prοtοn transfer are esterificatiοns and aldοl reactiοns.

The acid-catalysed hydrοlysis οf diethyl acetamidοbenzylmalοnate can lead tο variοus by prοducts depending οn the reactiοn cοnditiοns and specific chemical pathways. Hοwever, withοut mοre detailed infοrmatiοn οr a specific reactiοn mechanism, it is difficult tο prοvide a cοmprehensive list οf the by prοducts that may fοrm.

Based οn the infοrmatiοn prοvided, the acid-catalysed hydrοlysis οf diethyl acetamidοbenzylmalοnate delivers the desired (+)-phenylalanine hydrοchlοride prοduct and the fοllοwing byprοduct(s):

E. Bοth A and C: Acetic acid and ethanοl.

The hydrοlysis οf diethyl acetamidοbenzylmalοnate invοlves the cleavage οf ester bοnds, resulting in the fοrmatiοn οf acetic acid as a byprοduct. Additiοnally, since diethyl acetamidοbenzylmalοnate is an ester, hydrοlysis οf the ester bοnds can alsο prοduce ethanοl as anοther byprοduct.

Therefοre, the byprοducts in this reactiοn are acetic acid (οptiοn A) and ethanοl (οptiοn C).

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Complete Question :

Answer:

Neon is a noble gas, it is monoatomic in nature, which implies that it has only one atom present. If we compare neon with water, water has three atoms present, two hydrogen atoms and one oxygen atom. Hence water stores more energy than neon because it is polyatomic and contains chemical bonds.

Slime is a non-Newtonian fluid and does not have a molecular structure that can be considered polar or non-polar. The term "polarity" typically refers to the distribution of electrical charge within a molecule. In the case of slime, the material is made up of polymer molecules, which are long chains of repeating units. These polymer molecules interact with each other through hydrogen bonding, which gives the material its unique properties such as being a non-Newtonian fluid. However, these interactions are not based on polarity, so it is not appropriate to describe slime as being polar or non-polar.

Answer:

The polarity of slime molecules depends on the specific type of slime. There are many different types of slime, each made up of different types of molecules.

For example, if we consider a typical type of slime made from polyvinyl alcohol (PVA), the polarity of the PVA molecules will depend on their molecular structure and the type of bonding between the atoms. PVA is a synthetic polymer made up of repeating units of vinyl alcohol, which has a polar hydroxyl group (-OH). As a result, PVA is considered to be a polar molecule.

However, the overall polarity of a slime made from PVA will also depend on the other ingredients that are present, such as borax, which is often used as a cross-linking agent to form the slime. The overall polarity of the slime will also depend on the conditions it is in, such as the temperature, pH, and the presence of other substances that could affect the polarity of the slime.

In summary, the polarity of slime molecules can be complex and depends on the specific type of slime, the ingredients that make it up, and the conditions it is in.

Explanation:

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ALLEN

The beta particles are similar to alpha particles in the way that they both are used in the treatment of cancer.

Alpha particles, beta particles, and gamma rays are the three most frequent forms of radiation.

Similarity between beta and alpha particle is that they both are used in the treatment of cancer.

Hence both particles are used in the treatment of cancer.

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The wavelength of the indigo light can be calculated using the formula:

wavelength = speed of light / frequency

The speed of light is approximately 3.00 x 10^8 m/s.

So, substituting the given frequency into the formula:

wavelength = (3.00 x 10^8 m/s) / (7.08 x 10^14 Hz)

wavelength = 4.23 x 10^-7 meters or approximately 423 nanometers (nm).

Therefore, the wavelength of indigo light with a frequency of 7.08 x 10^14 Hz is approximately 423 nm.

Answer:

2D 3D

Explanation:

can I get the options for number 4 and I’m not totally sure for number one but I would say shorter,longer

Answer:

N have 8 13 neutrons.

Explanation:

Nitrogen-15      Nitrogen-20

     8                             13

Guidelines for accidental contact is the section in which each type of information can be found on a safety data sheet.

The safety data sheet (SDS) contains details about each chemical's characteristics, potential physical, mental, and environmental health risks, counter measures, and safety instructions for handling, storing, and transporting the chemical.

Guidelines for accidental contact: First aid measures; chemical name; identification of potential hazards; compatibility; handling; PPE; and exposure controls. Hazards and suggestions for chemicals are:

Chemical hazards are various chemical chemicals that can be harmful to human health. The First-Aid Measures are a set of suggestions on how to lessen the consequences brought on by unintentional exposure to a certain chemical threat. Personal protection equipment (PPE) is a category of specially made equipment that shields an employer from workplace safety threats.

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The complete question is

Identify the section in which each type of information can be found on a Safety Data Sheet.

recommendations in case of accidental contact with the chemical Choose...

chemical name and formula Choose...

possible dangers and health effects Choose...

incompatibility or reactivity with other chemicals Choose...

recommended personal protective equipment (PPE) Choose...

Answer:

The answer is "1".

Explanation:

It is the lone pairs at, which the central atom provides the molecular and the polarity. It is only for substances with just a central atom, for which the molecules with only one central atom and only one of the solitary paired were required, that's why in this question the "1" is the correct answer.

We are given the liters and molarity of the solution. To find grams we must take into account the definition of molarity. Molarity is defined as:

Now, we find the moles of solute:

Now, to convert these moles to grams we must multiply the moles by the molar mass of Ca(NO3)2. Molar mass Ca(NO3)2 is 164.10g/mol.

So, the grams will be:

Answer: There are present 394grams of Ca(NO3)2

Answer:

4. they have the same number of protons

Explanation:

while all the other particles and attributes can be changed, protons cannot.

Answer:

3

Explanation:

begining 0's are never significant

all numbers 1-9 are always significant

ending 0's are only significant when there is

a decimal.

Answer: true

Explanation:

Hope this helps

It is true that decomposers such as bacteria recycle dead tissue into reusable chemicals for other producers, which are then eaten by consumers.

Nutrient recycling is the process by which essential elements in the ecosystem are in transition between abiotic and biotic factors.

In an ecosystem, the following groups of organisms exists:

Decomposers are responsible for breaking down dead tissues of living organisms leading to the release of nutrients to the soil. These nutrients are used by producers, which are then eaten by consumers.

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Answer:

A I DID THIS BEFORE

Explanation:

Most likely the mid ocean ridge happens at point A.

What are mid ocean ridges?

A continuous system of underwater volcanoes that encircles the planet like seams on a baseball and stretches for approximately 65,000 kilometres is known as the mid-ocean ridge system (40,390 miles). The system is mostly submerged, with water reaching the top of the ridge on average at a depth of 2,500 meters (8,200 feet).

From the given diagram it can be seen the above description fits in point A

Therefore Most likely the mid ocean ridge happens at point A

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Answer:

C. is the correct answer

Explanation:

I took the test

Answer:

D

Explanation:

red

Answer:

Red stars are the coolest along the colors and temperatures of stars.

Explanation:

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The concentrations of the reactants and the products remain constant.III. The amount of reactants is equal to the number of products. Option B (I and III) is correct.

At equilibrium, the rate of the forward and reverse reactions are equal (a statement I), which means the net rate of the reaction is zero.

The concentrations of the reactants and products do not necessarily have to be equal at equilibrium (Statement III). It is possible for the equilibrium to favor one side or the other, resulting in a higher concentration of either reactants or products.

As a result, the concentration of the reactants and products stays constant. The amount of reactants in a reaction is equivalent to the number of products at equilibrium.

As a result, option B (I and III) is the correct answer.

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Answer:

esterification reaction ...........

A pharmacy has 300 ml of a 50% solution. 200 ml is added to this solution to decrease the concentration. 0.3 grams of active ingredient per milliliter would be in the diluted solution.

To calculate the grams of active ingredient in the diluted solution, we need to consider the initial solution and the added volume.

The initial solution has a volume of 300 ml and a concentration of 50%. Therefore, the active ingredient in this solution is 0.5 * 300 ml = 150 grams.

When 200 ml is added to this solution, the total volume becomes 300 ml + 200 ml = 500 ml.

To find the concentration of the diluted solution, we divide the grams of active ingredient by the total volume: 150 grams / 500 ml = 0.3 grams/ml.

Thus, the diluted solution would have 0.3 grams of active ingredient per milliliter.

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Answer:

C. Chemical reactions may have deteriorated the rubber

Explanation:

A tire ages with time and most of the time this happens due to chemical reactions in the rubber parts. This could happen faster due to heat and sun.

As a tire is deteriorating or aging, a chemical change happens. What happens is that more chemical bonds are going to be produced with time between the molecules. We call this the process of oxidation. This actually bad for the tire, because the rubber would turn out to be stuffs d strong causing the tires thread to separate and also disintegration would occur.

Answer:

There are three main types of recycling: primary, secondary, and tertiary.Single-stream recycling is a system in which all recyclables, including newspaper, cardboard, plastic, aluminum, junk mail, etc., are placed in a single bin or cart for recycling. ... While collections costs are lower with a single stream system, processing costs are much higher.

Explanation:

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The chemical formula is the best representation for obtaining a quick overview of the number of each element in a compound. A chemical formula is a symbolic representation of a compound's chemical composition that indicates the number and type of atoms present in the compound. In general, chemical formulas use chemical symbols and numerical subscripts to express the composition of a compound.

The chemical symbols represent the atoms of each element in the compound, while the numerical subscripts indicate how many atoms of each element are present. A chemical formula can be represented in a variety of ways. The most common form of a chemical formula is empirical formula, which expresses the relative number of each element in the compound in the lowest integer ratios. Another way of representing a chemical formula is a molecular formula, which provides the exact number of atoms of each element in the compound.

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The limiting reactant in the reaction is oxygen, as it produces 0. 20 mol of NO. Thus, option A is correct.

The limiting reactant in the chemical reaction is the reactant that is present in the lesser concentration with the another reactant and decides the product formation.

The balanced equation for ammonia dissociation is:

\(\rm 4\;NH_3\;+\;5\;O_2\;\rightarrow\;4\;NO\;+\;6\;H_2O\)

The moles of ammonia require is 4 moles to react with 5 moles of oxygen

The moles has been given as:

\(\rm Moles=\dfrac{Mass}{Molar\;mass}\)

The available moles of ammonia in 4 gram is:

\(\rm Moles\;ammonia=\dfrac{4}{17}\\ Moles\;ammonia=0.23\;mol\)

The available moles of oxygen in 8 grams is:

\(\rm Moles\;oxygen=\dfrac{8}{32}\\ Moles\;oxygen=0.25\;mol\)

The moles of oxygen required for 0.23 moles of ammonia are:

\(\rm 4\;mol\;ammonia=5\;mol\;oxygen\\0,23\;mol\;ammonia=\dfrac{5}{4}\;\times\;0.23\;mol\;oxygen\\ 0.23\;mol\;ammonia=0.28\;mol\;oxygen\)

The required moles of oxygen is 0.28 mol, however the available moles of oxygen are 0.25 mol. Thus, oxygen is the limiting reagent.

Thus, option A is correct.

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Answer:

The velocity of the bb when it reaches a height of 203 m can be determined using the laws of projectile motion. Since the bb is moving vertically upwards, its velocity at that height will be zero.

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Answer: v = 83.96 m/s

Assuming the acceleration due to gravity is approximately 9.8 m/s^2, we can use the principles of projectile motion and energy conservation.

Using the equation for the vertical displacement of an object in free fall:

Δy = (v₀² - v²) / (2g)

Δy = vertical displacement (203m)

v₀ = initial velocity (105 m/s)

v = final velocity (not known yet)

g = accerlation due to gravity (9.8 m/s^2)

Lets rearrange the equation to solve for the final velocity:

v = v = √(v₀² - 2gΔy)

Substituting the given values:

v = √(105² - 2 * 9.8 * 203)

v ≈ √(11025 - 3979.6)

v ≈ √(7054.4)

v ≈ 83.96 m/s

Therefore, when the BB pellet is at the height of 203m, its velocity will be approximately 83.96 m/s.

Answer:

it is 395/9 =43.8888889