Which measuring tool should be used to measure the diameter of a soda can?

A.graduated cylinder

B.metric ruler

C.stopwatch

D.spring scale

The Elution sequence of compounds containing certain functional groups from the fastest to the slowest is hydrocarbons, olefins, ethers, halo carbons, aromatics, ketones, aldehydes, esters, alcohols, amines and acids.

Elution:

Elution in organic and analytic chemistry refers to the process in which one material is extracted from another material by washing it with the help of a solvent.

In an elution sequence, regardless of the polarity of the compounds, the solvent which is more polar, its chemicals elutes faster. Therefore, amending the polarity of the solvent will not change the order of elution of compounds. It might seem contradictory as a polar solvent seems to convey polar compounds beyond the non-polar compounds.

Contemplating the solvents and the chemicals will fight for the stationary phase locations conductive to help us visualize the intention. Slow elution would be created by the molecules which were remained to attach to the stationary phase due to poor ability of a less polar solvent to compete. Molecules and a polar solvent successfully asserted for the stationary phase locations.

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Answer:

It's a combination reaction

\( \underline{ \underline{ \texttt{Combination reaction }}}\)

What is combination reaction?

a reaction in which two reactants combine to form one product.

Why is it combination reation?

As you can see phosphorus and oxygen combined to form Phosphorus trioxide.

Based on the results obtained, the sample with the shortest time taken for the color change to occur contains the largest number of carbon to carbon double bonds.

What is Saturated Fat?

Saturated fat is a type of fat in which all the carbon atoms in the fatty acid chains are bonded to hydrogen atoms, leaving no double bonds between the carbon atoms. This results in a straight and rigid molecular structure that allows the fat molecules to pack tightly together, leading to a solid or semi-solid consistency at room temperature. Saturated fats are commonly found in animal products, such as meat and dairy, as well as in some plant-based sources like coconut and palm oil. A diet high in saturated fats has been linked to an increased risk of heart disease and other health problems.

The sample with the largest number of carbon to carbon double bonds will react the fastest with the bromine water, resulting in the quickest color change from orange to colorless. Therefore, the sample with the shortest time taken for the color change to occur will contain the largest number of carbon to carbon double bonds.

Therefore, the sample that contains the most carbon to carbon double bonds can be determined by comparing the times taken for the color change to occur in each sample.

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The statement that is true about chemical nutrients in an ecosystem is : D.) They recycle within the ecosystem, being constantly reused. Therefore, option D) is the correct answer.

The nutrient cycle is vital to the ecosystem, and this is how nutrients are recycled in it. Nutrients that are considered chemical nutrients include carbon, hydrogen, oxygen, nitrogen, and phosphorus.What are chemical nutrients in an ecosystem

Chemical nutrients refer to essential elements that are found in an ecosystem's physical and chemical environment. These elements are necessary for life because they are responsible for different functions such as cell structure, the production of enzymes, and the production of hormones.

In conclusion, chemical nutrients recycle within the ecosystem, being constantly reused. Nutrient recycling helps to maintain the ecosystem's sustainability. It helps to maintain the balance of life forms within the ecosystem.

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Number of molecules NH₃ = 4.45 x 10²²

A mole is a number of particles(atoms, molecules, ions)  in a substance

This refers to the atomic total of the 12 gr C-12  which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

N = number of particles

n = mol

No = 6.02.10²³ = Avogadro's number

mol of NH₃ = n = 0.074

So the number of molecules :

\(\tt N=n\times No\\\\N=0.0740\times 6.02\times 10^{23}\\\\N=4.45\times 10^{22}\)

False. Using disinfectant chemicals can actually have a negative effect on the long term use of scissors and other sharp objects.

While disinfectants are great for killing germs and bacteria, they can also cause damage to the metal surfaces of scissors and other sharp objects, causing them to rust or corrode over time. This can ultimately lead to dull blades and a shorter lifespan for the tools. It's important to properly clean and disinfect scissors and other sharp objects, but it's equally important to be mindful of the chemicals used and to follow manufacturer's instructions for proper maintenance and care. To ensure the longevity of your scissors and other sharp objects, it's recommended to wipe them down with a mild disinfectant solution and to dry them thoroughly after each use. Additionally, storing them in a dry, clean place can also help to prevent damage.

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Answer:

Explanation:

The question requires us to calculate the volume (in L) of a gas under the conditions given.

The following information was provided by the question:

Initial volume of gas = V1 = 2.00 L

Initial temperature of gas = T1 = 25.0 °C

Initial pressure of gas = P1 = 1.08 atm

Final temperature of gas = T2 = 100 °C

Final pressure of gas = P2 = 1.50 atm

To solve this problem, we'll need to apply the equation of ideal gases (shown below) twice: first, to determine the number of moles of gas, and again to calculate the volume of gas under the final conditions. Note that we'll determine the number of moles of gas under the initial conditions because this amount won't change (as we're talking about the same sample of gas).

The amount of hydrogen gas that  is produced from 50g of Mg and 75g Hcl is: 2.08 grams of hydrogen gas is produced from 50 grams of Mg and 75 grams of HCl.

To determine how much hydrogen gas is produced from 50g of Mg and 75g of HCl, we need to use the stoichiometry of the balanced chemical equation:

Mg + 2HCl → MgCl2 + H2

First, let's calculate the number of moles of Mg and HCl:

Number of moles of Mg = 50 g / 24.31 g/mol = 2.06 mol

Number of moles of HCl = 75 g / 36.46 g/mol = 2.06 mol

The mole ratio of Mg to H2 is 1:1, so the number of moles of H2 produced is also 2.06 mol.

Finally, we can use the molar mass of hydrogen (1.008 g/mol) to convert the moles of H2 to grams:

Mass of H2 produced = 2.06 mol × 1 mol/1 mol × 1.008 g/mol = 2.08 g

Therefore, 2.08 grams of hydrogen gas is produced from 50 grams of Mg and 75 grams of HCl.

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Answer:

As a metal, it is (was) widely used for its malleability, ductility, and its resistance to corrosion, making popular in older plumbing systems. Strangely, even as a metal, it is not a good conductor of electricity.

The right answer is given in the picture.

To find the formula of an ionic compound, first, identify the cation and write down its symbol and charge. Then identify the anion and note its sign and charge. Finally, the two ions combine to form an electrically neutral compound.

Particle diagram Elements and compounds can be represented using particle diagrams. This is a box with colored spheres drawn to represent atoms or molecules. These diagrams can represent elements and compounds and their molecular composition by the types of spheres and how they are connected. Particle diagrams are used to show particles, atoms, or molecules within matter. A diagram showing particles in a substance.

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\(\huge\bold{\purple{\bold{⚡a.⚡}}} \)

\(\huge\bold{\red{\bold{⚡c.⚡}}} \)

Both of the above are correct- because :

\(\huge\underline\mathtt\colorbox{cyan}{Hope it helps!}\)

When atoms that have different electronegativities bond together, there will be a  low probability of finding the electrons on the side of the molecule that has the atom with the higher electronegativity.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

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Due of their propensity to create ionic connections by giving up electrons, group 2 elements all share this trait. option (d) is correct.

The negatively charged particles known as electrons revolve around the outer edges of the nucleus. For scientists, it can be challenging to monitor them because of how quickly they spin. The tiniest particles in an atom, you can put 20,000 of them inside a proton, they are drawn to the positive ion of the protons.

Same-group electrons have similar chemcial and physical characteristics. Group-2 is the alkaline earth metals which have tendency to lose two electrons to form the M+2 types of metal ions as after losing two electrons they get the Noble gas configuration.

Since they tend to lose electrons therefore they will form ionic bond with non-metals and results to form the ionic compounds.

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The Complete Question :

what do all group 2 elements have in common? (2 points) group of answer choices

(a) they all gain two electrons to form a stable outer energy level.

(b) they form covalent bonds with halogens.

(c) they all react easily with the noble gases

(d) they tend to form ionic bonds by losing electrons.

Due of their propensity to create ionic connections by giving up electrons, group 2 elements all share this trait.

Thus, they tend to form ionic bonds by losing electrons, this is the correct option.

The negatively charged particles known as electrons revolve around the outer edges of the nucleus. For scientists, it can be challenging to monitor them because of how quickly they spin. The tiniest particles in an atom, you can put 20,000 of them inside a proton, they are drawn to the positive ion of the protons.

Same-group electrons have similar chemical and physical characteristics. Group-2 is the alkaline earth metals which have tendency to lose two electrons to form the M+2 types of metal ions as after losing two electrons they get the Noble gas configuration.

Since they tend to lose electrons therefore they will form ionic bond with non-metals and results to form the ionic compounds.

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False; all of the columns for the element oxygen are accurately filled out in the following table. (Beryllium is used as an illustration.) The element's atom's electron arrangement predicts the ion charge beryllium One and two oxygen atoms 1s 2 , 2s 2 , 2p 4 , 3s 2 -2

A chemical element with the atomic number 4 and the symbol Be is known as beryllium. It is an alkaline earth metal that is steel-gray in color, tough, light, and brittle. It is a divalent element that only naturally occurs in minerals when combined with other elements. Beryl and chrysoberyl are well-known gemstones that contain a lot of berylliums.

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The third law of thermodynamics describes the entropy of a: solid.

The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.

The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.

In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.

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Answer:Graduated Cylinder

Explanation:

You use the water displacement test to find the volume of irregular shaped objects.

Answer:

Graduated Cylinder

The ratio of effusion rate of O₂ to SO₂ is 2.526

Effusion rate refers to the speed at which a gas passes through a small opening and enters a vacuum or an area of lower pressure.. It depends on the size of the hole, the pressure of the gas, and the molecular weight of the gas. Lighter gases effuse faster than heavier gases. The effusion rate is directly proportional to the velocity of the gas molecules, which is in turn proportional to the square root of the temperature of the gas.

Effusion rate of a gas is inversely proportional to the square root of its molar mass.

The molar mass of O₂ is 2 × 15.999 g/mol = 31.998 g/mol.

The molar mass of SO₂ is 32.066 g/mol + 2 × 15.999 g/mol = 64.064 g/mol.

The ratio of their effusion rates is:

√(64.064 g/mol) / √(31.998 g/mol) = 2.526

Rounded to four significant figures, the ratio is 2.526.

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The most likely effect of the nationwide chain of gas stations adding recharging stations for electric vehicles to all of its locations is that charging stations will become less scarce. Option C is correct.

As more charging stations become available, it becomes easier for electric vehicle owners to find a place to charge their cars. This, in turn, makes it more likely that people will purchase electric vehicles, since they will have access to convenient and accessible charging stations. It also means that electric vehicle owners will no longer need to worry about running out of power during longer trips or in areas where charging stations were previously scarce.

The decision by the gas station chain does not necessarily mean that they will have less gas available, and it is unlikely that consumers will stop using the charging stations since they will become more widely available. Charging stations will become more important as more people switch to electric vehicles, and gas stations will need to adapt to this trend in order to remain competitive.

Hence, C. is the correct option.

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--The given question is incomplete, the complete question is

"A nationwide chain of gas stations has decided to add recharging stations for electric vehicles to all of its locations. What is the most likely effect of this decision? A) The locations will have less gas available. B) Consumers will stop using the charging stations. C) Charging stations will become less scarce. D) Charging stations will become less important."--

Answer:

5,18*10^{24}

Explanation:

N=n*Na

N=8.6*6.02*10^{23}

N=5,18*10^{24}

Answer:

Because of the summer season

Explanation:

The water in the dish which is uncovered will evaporate faster as compared to the one which is

covered. This is because the air above the uncovered dish has less water vapour over it as

compared to the one which is covered. The covered dish has good amount of moisture over it as

the closed lid does not allow the moisture to come in direct contact with air.

The molecular formula if the molar mass is 92 g/mol if the empirical formula is nitrogen dioxide then the molecular formula is N₂O₄.

An empirical formula is a simple expression of the relative numbers of atoms of each element present in a compound. It is typically written as a chemical formula in the form of a whole number ratio, such as CH2O for glucose, denoting that there are two atoms of hydrogen for every one atom of carbon and one atom of oxygen. Empirical formulas are not the same as true chemical formulas, which also list the arrangement of atoms in a compound.

Molecular formula = (empirical formula) × \(\frac{molar mass}{empirical formula mass}\)

Empirical formula for nitrogen dioxide is NO₂

Empirical formula mass = 2×(16)+32 = 64

Molecular Formula = NO₂ x (\(\frac{92}{64}\)) = NO₂ x 1.4375 = \(N_1_._4_3_7_5O_2_._8_7_5\)

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It became thicker and its viscosity decreased and cannot flow as easily as before.

You ignite a chemical reaction by adding the borax solution to the glue mixture.

In a chemical reaction, the molecules of glue and borax combine to form a flexible, springy new substance. With rubber's vulcanization serving as a model, chemical cross-linking has been extensively employed to change the physical properties of polymeric materials.

Chemical links between polymer chains provide a substance with a more solid structure and perhaps a better-defined shape. It thickened and lost viscosity, making it more difficult to flow than it once could.

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The long term survival of any species of organism is possible only if the organisms can adapt the environment it living and to reproduce.

Not all kind of living things are fittest to survive in the world to live. Some of them are pray of their predators. Some are unhealthy to survive  while some others are competing to find food and shelter.

There are many organisms which have some natural adaptations, like some  strategies or physical peculiarities to hide from their predators and survive for ling time. For example, chameleon can hide from others by their color mimicking know as camoflouge.

The fittest one will survive and will be able to maintain their population through reproduction. Therefore, the organisms which can adapt to the environment it lives can survive for ling time.

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Answer:

R

H

M

F

I

B

it is now in order

Answer:

100 miles

Explanation:

20 miles = 1 day

to find 5 multiply both numbers by 5

100 miles = 5

Answer:

100 mi

Explanation:

if he walks 20 mi a day and we're determining how far he'll walk in 5 days then 5 x 20 = 100

The value of ΔG at 298 K for a reaction mixture containing 1.9 atm N2, 1.6 atm H2, and 0.65 atm, the answer is (a) -3.86 × 10^3.

NH3 can be calculated using the equation:

ΔG = ΔG° + RT ln(Q)

where ΔG is the standard Gibbs free energy change, ΔG° is the standard Gibbs free energy change at standard conditions, R is the gas constant, T is the temperature in Kelvin, and Q is the reaction quotient.

In this case, we are given ΔG° as -33.3 kJ/mol. To calculate Q, we need to use the partial pressures of the gases in the reaction mixture. The reaction stoichiometry tells us that the ratio of the partial pressures of N2, H2, and NH3 is 1:3:2. Therefore, we can write:

Q = (P(NH3))^2 / (P(N2) * P(H2)^3)

Plugging in the given values of P(N2) = 1.9 atm, P(H2) = 1.6 atm, and P(NH3) = 0.65 atm, we can calculate Q. Then, using the value of R = 8.314 J/(mol·K) and the temperature T = 298 K, we can substitute these values into the equation and solve for ΔG.

The calculated value of ΔG at 298 K for the given reaction mixture is approximately -3.86 × 10^3 J/mol. This value is equivalent to -3.86 kJ/mol. Therefore, the answer is (a) -3.86 × 10^3.

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A nuclear reaction that causes similar succeeding reactions is known as a chain reaction.

A chain reaction a chemical reaction or other process in which the products themselves promote or spread the reaction, which under certain conditions may accelerate dramatically.

A possible nuclear fission chain reaction. 1. A uranium-235 atom absorbs a neutron, and fissions into two new atoms (fission fragments), releasing three new neutrons and a large amount of binding energy.

neutrons released during a fission reaction cause other nuclei to split." This is applicable to fission reactions only wherein atoms split and produce neutrons that also cause further atoms to split, thus creating a chain or series of reactions.

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Answer: It is 443.1792 high in Meters.

Explanation: