For example, oxygen reacts to form _______ and chlorine forms ________ .

The number of atoms of any element in the given chemical formula is the number that is written on the foot of the symbol of that element. Therefore, chlorine has the strongest attraction for electrons in a chemical bond.

Atom is the smallest particle of any matter. Atom combines to form element and element combine to form molecule or compound.

Atom consists of electron, proton and neutron. The total mass of atom is inside the nucleus. Inside the nucleus proton and neutron is there. So calculate mass of an atom, total mass of all protons is added to the total mass of neutron. Electrons revolve around the nucleus.

Electronegative element have greatest strongest attraction for electrons due to high effective nuclear charge. Among the given molecules, chlorine is the most electronegative element. Chlorine has the strongest attraction for electrons in a chemical bond.

Therefore, chlorine has the strongest attraction for electrons in a chemical bond.

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Answer:

The Nucleus...

it perform many activities and stores DNA in a cell.

The balanced chemical equations of the reactions are given below:

1. Mg (s) + 2 H₂O (l) ----> Mg(OH)₂ (s) + H₂ (g)

2. 2 Li (s) +  2 H₂O (l) ----> LiOH (aq) + H₂ (g)

A balanced chemical equation is an equation in which the number of moles of atoms of elements in a given reaction is equal to the sum of the number of moles of atoms of each element that is produced.

A balanced chemical equation is in accordance with the law of conservation of mass which states that matter can neither be created nor destroyed.

When balancing chemical equations, numerical coefficients are added in front of moles of atoms of an element or moles of a given compound taking part in the reaction.

The balanced chemical equation of the reaction of magnesium and water as well as the reaction of lithium and water is given below:

Magnesium and water:

Mg (s) + 2 H₂O (l) ----> Mg(OH)₂ (s) + H₂ (g)

Lithium and water:

2 Li (s) +  2 H₂O (l) ----> LiOH (aq) + H₂ (g)

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Answer:

C. H₂SO₄

Explanation:

   Given expression:

         H₂O + SO₃  →   H₂SO₄

In the chemical reaction, the product and the reactant have the same species.

Chemical reactions obeys the law of conservation of matter.

This way, atoms combine with one another to give a desired product. The products will contain a mix of the reactants.

Answer:

cccccccccc

Explanation:

Answer:

In Thomas Cole's painting "The Oxbow," Thomas Cole, the artist, shows himself sitting in the landscape while painting it.

Explanation:

In the painting called "The Oxbow" by Thomas Cole, the artist actually put himself in the picture. He's sitting right in the middle of the landscape, just like he placed himself in the painting, as if taking a selfie while working on it. It's like he took a snapshot of himself while he was working on the painting. This shows how much he cared about creating the artwork and how he felt a personal connection to the beautiful scenery. It's really fascinating because it gives us a glimpse into how he saw himself as an artist and how he wanted to capture the incredible beauty of nature through his art.

Answer:

100 HZ 1,000 HZ 10,000 HZ there you go :)

Answer:

100 hertz, 1,000 hertz, and 10,000 hertz

Explanation:

I took the k12 test :)

The pounds of alum produced when 0.26 g of hydrogen was produced are 0.0434 lb.

First, let's convert 0.126 g of hydrogen to moles using its molar mass (2.02 g/mol).

\(0.126 g \times \frac{1moo}{2.02 g} = 0.0624 mol\)

Let's consider the steps to make alum (KAl(SO₄)₂⋅12H₂O) from aluminum (Al).

To relate H₂ to KAl(SO₄)₂⋅12H₂O, we need to consider the appropriate molar ratios:

The moles of KAl(SO₄)₂⋅12H₂O produced from 0.0624 moles of H₂ are:

\(0.0624 molH_2 \times \frac{2molKAl(OH)_4}{3molH_2} \times \frac{2molAl(OH)_3}{2molKAl(OH)_4} \times \frac{1molAl_2(SO_4)_3} {2molAl(OH)_3} \times \frac{2molAlum}{1molAl_2(SO_4)_3} =0.0416 mol Alum\)

The molar mass of alum is 474.38 g/mol. The mass corresponding to 0.0416 moles is:

\(0.0416 mol \times \frac{474.38g}{mol} = 19.7 g\)

Finally, we convert 19.7 grams to pounds using the conversion factor 1 lb = 454 g.

\(19.7 g \times \frac{1lb}{454g} = 0.0434 lb\)

The pounds of alum produced when 0.26 g of hydrogen was produced are 0.0434 lb.

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Answer:

4 NH3(0) + 3 O2(g) → 2 N2(g) + 6H20() ... How many grams of water would be formed from 96.0 g NH3 in a reaction represented by the balanced equation below.

Missing: 6 ‎H₂O( ‎l)​

Explanation:

Answer:

In explanation :P

Explanation:

Cu was detected in CuS with X-ray absorption spectroscopy in the high-energy-resolution fluorescence detection (HERFD) mode. The S L2,3 emission spectrum of CuS was found to be significantly broader than Cu2S due to contributions from inequivalent S sites. This difference in the spectral width was used to distinguish between sulfide species formed on the Cu foil exposed to Na2S solutions

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Answer:

it's a covalent linkage in which two atoms share three pairs of electrons as in nitrogen molecule or acetylene

Hi there,

I hope you and your family are staying safe and healthy!

The correct answer is C

Each shell can contain only a fixed number of electrons. The first energy shell around a nucleus can hold up to 2 electrons. Then the second shell can hold up to 8 eletrcons.

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~Gary

A precipitate is an insoluble solute formed in a solution. No precipitate will form when magnesium acetate and strontium chloride react as they produce a soluble salt.

A precipitate is an insoluble particle that is formed when the ionic compounds react to produce insoluble salt.

Reaction when magnesium acetate and strontium chloride reacts is shown as:

Mg(CH₃COO)₂ (aq) +SrCl (aq) → MgCl₂ (aq) +Sr(CH₃COO)₂ (aq)

The substance containing acetate in the compound is always soluble and hence cannot make precipitate. Also, chloride gets soluble with magnesium.

Therefore, no precipitate will be formed.

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This experiment shows that the elements of pure solid substance in a system closed off from the surroundings has increased temperature very fast.

Pure substances are substances that are built up of only one kind of particle and have a fixed or abiding structure. Pure substances are further confidential as elements and compounds. An element is a substance that comprises only one type or kind of atom. a pure substance has a constant chemical composition.

No affair where you sample a substance, it is the same. For chemistry, the safest examples of pure substances are elements and compounds. So, examples cover gold, silver, helium, sodium chloride, and pure water.

So we can conclude that In chemistry, a pure substance is an element or compound made up of one type of particle.

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Answer:

Explanation:

The balanced chemical equation for the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) is:

HCl(aq) + NaOH(s) → NaCl(aq) + H2O(l)

From the balanced equation, we can see that one mole of hydrochloric acid reacts with one mole of sodium hydroxide to produce one mole of sodium chloride and one mole of water.

First, we need to determine which reactant is limiting, i.e., which reactant is completely consumed in the reaction. To do this, we need to compare the number of moles of each reactant, using their respective molar masses:

Molar mass of HCl = 1.008 g/mol (atomic weight of hydrogen) + 35.45 g/mol (atomic weight of chlorine) = 36.46 g/mol

Molar mass of NaOH = 22.99 g/mol (atomic weight of sodium) + 16.00 g/mol (atomic weight of oxygen) + 1.008 g/mol (atomic weight of hydrogen) = 39.99 g/mol

Number of moles of HCl = mass / molar mass = 30.0 g / 36.46 g/mol ≈ 0.823 mol

Number of moles of NaOH = mass / molar mass = 14.3 g / 39.99 g/mol ≈ 0.358 mol

Since the stoichiometric ratio between HCl and NaOH is 1:1, NaOH is the limiting reactant because it has fewer moles than HCl.

Therefore, we can calculate the maximum mass of NaCl that can be produced by the reaction using the number of moles of NaOH:

Number of moles of NaCl produced = number of moles of NaOH used in the reaction = 0.358 mol

Mass of NaCl produced = number of moles of NaCl produced x molar mass of NaCl

Molar mass of NaCl = 22.99 g/mol (atomic weight of sodium) + 35.45 g/mol (atomic weight of chlorine) = 58.44 g/mol

Mass of NaCl produced = 0.358 mol x 58.44 g/mol = 20.9 g

Therefore, the maximum mass of NaCl that can be produced by the reaction is approximately 20.9 g

Answer:

365 mL

Explanation:

There are 1,000 mL per every 1 L. As such, to convert between the two measurements, you need to multiply the given volume (0.365 L) by the conversion. To allow for the cancellation of units (liters), liters should be in the denominator of the conversion.

1,000 mL = 1 L

 0.365 L            1,000 mL
----------------  x  -----------------  = 365 mL
                               1 L

As per the standard data, the heat evolved during one mole of calcium carbonate decomposes is 177.8 KJ. Thus 15 g or 0.15 moles of calcium carbonate when decomposed will produce 26.67 KJ of heat.

Reaction enthalpy of a substance is the heat evolved or absorbed during a reaction. Reaction enthalpy is negative for an exothermic reaction and positive for an endothermic reaction.

Molar mass of calcium carbonate = 100 g.

no.of moles in 15 g = 15 /100 = 0.15 moles.

One mole or 100 g of calcium carbonate decompose to evolve 177.8 KJ according to the scientific record.

Thus, heat evolved by the decomposition of 0.15 moles is 0.15 × 177.8 KJ = 26.67 KJ.

Hence, the heat evolved during the decomposition of 15 g of calcium carbonate is 26.67 KJ.

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Yes, I think that it should be more tightly packed than now and it should be made with tight and strong substance which can't be torn easily.

The Medal of Honor is the best navy decoration and highest volume.

The President of the USA The Victoria go is the holy grail for Medal of Honor creditors because there are the best in lifestyles. Bearing the inscription For valor and called a VC, this medal turned into first offered for conspicuous bravery' in 1856 and later backdated to the Crimean conflict of 1854. The outstanding service pass is the second maximum army ornament that may be provided to a member of the American military, for intense gallantry and risk of lifestyle in actual combat with an armed enemy force.

The Bronze Star Medal dates lower back to world battle II. these days, it is the fourth-maximum ranking award a provider member can obtain for a heroic and meritorious deed performed in an armed battle. For individuals who acquire the BSM, it's far a sign of their sacrifice, bravery, and honor at the same time as serving their us of a

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The heat evolved per gram of CuS roasted is -5.01 kJ/g.

The reaction is exothermic, with a delta H of -114.6 kJ/mol. This means that the reaction releases 114.6 kJ of heat for every mole of CuS that is converted to CuO. The reaction is carried out in a roaster, which is a large, industrial-scale furnace that is specifically designed for this process.

To solve the above problem, we need to determine the heat evolved per mole of CuS roasted, and then convert that to heat per gram of CuS roasted.

The heat evolved per mole of CuS roasted can be calculated using the given equation and the given value for the enthalpy change:

AH = -805.6 kJ/mol

We can then convert the heat evolved per mole to heat evolved per gram by dividing by the molar mass of CuS:

Heat per gram = (-805.6 kJ/mol) / (160.6 g/mol) = -5.01 kJ/g

Therefore, After roasting, the copper oxide is then leached with a solution of sulfuric acid to extract the copper. The resulting solution is then filtered and the copper is recovered from the solution through a process called electrowinning.

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See full question below

The first step in the industrial recovery of copper from the copper sulfide ore is roasting, that is, the conversion of CuS to CuO by heating: 2CuS(s) + 302(g) → 2CuO(s) + 2802(g) AH = -805.6 kJ/mol Calculate the heat evolved (in kJ) per gram of CuS roasted.

To get the Ka of the solution, we must first determine the pKa of the solution. The pH of the solution is equivalent to the pKa of the solution at the equivalence point.

pH=7.46+log(0.274M/0.146M)=7.73

Both Ka and pH are related to one another. The greater the Ka, the greater the dissociation and consequently the strength of the acid. A strong acid has a lower pH. As a result, a higher Ka value corresponds to a lower pH value.

The initial concentration of the acid and the initial pH of the solution may be used to determine Ka. The original pH yields [H3O+1], which equals [A-1] in the weak acid solution.

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The actual position of the fish is different from the apparent position of the fish. What behavior of light does this scenario best represent are  refraction.

Refraction is the bending of light as it passes from one medium to another, such as from air to water. This bending of light is caused by a change in the speed at which light travels. When light travels from a slower medium to a faster medium, it refracts away from the normal. When light travels from a faster medium to a slower medium, it refracts towards the normal. Refraction is also responsible for the formation of optical illusions, such as mirages, rainbows, and halos. Refraction is also the basis for the working of a number of optical instruments, such as lenses, microscopes, and telescopes.

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The given molecule is a ketone.

Since carbonyl group in ketones is not located in the extremes of the main chain, they need energy to break C-C bonds and be able to oxidize.

In this case it is not specified if the oxidation is carried out applying energy, but anyway, the products of the oxidation of a ketone are esters that are hydrolized to carboxilic acid and alcohol.

It means that the answer is no reactions occurs (this because it is not specified that energy was applied and none of the options are possible products of the reaction).

The ion with a +3 charge, 28 electrons, and an atomic mass of 71 is the aluminum ion (\(Al^{3+}\)).

Aluminum (Al) typically has an atomic number of 13, which means it has 13 protons and 13 electrons in its neutral state. However, in the given ion, \(Al^{3+}\), the ion has lost three electrons, resulting in a +3 charge. This means that the ion now has 13 protons and only 10 electrons remaining, giving it a net positive charge of +3.

The atomic mass of aluminum is 26.98 atomic mass units (amu). The given ion has an atomic mass of 71 amu, which suggests that the ion has gained additional particles. In this case, the ion has also gained three neutrons, resulting in a higher atomic mass.

The total number of particles (protons, neutrons, and electrons) in the ion can be calculated by adding the number of protons (13) and the number of neutrons (3), which equals 16. Since the ion has a net charge of +3, it only contains 10 electrons.

In summary, the ion with a +3 charge, 28 electrons, and an atomic mass of 71 is the aluminum ion (\(Al^{3+}\)), which has 13 protons, 10 electrons, and 3 neutrons.

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nitrogen = N

sodium = Na

chromium = Cr

Answer:

137.16

Explanation:

The balanced chemical equation for the reaction between strontium and oxygen can be written as follows: 2 Sr (s) + \(O_2\)(g) → 2 SrO (s).

In this equation, solid strontium (Sr) reacts with gaseous oxygen (\(O_2\)) to produce solid strontium oxide (SrO).

To determine the mass of product expected to form in this reaction, we need to consider the molar ratio between strontium and strontium oxide. From the balanced equation, we can see that 2 moles of strontium react to produce 2 moles of strontium oxide.

The molar mass of strontium (Sr) is 87.62 g/mol, and the molar mass of strontium oxide (SrO) is 119.62 g/mol. Since the molar ratio is 1:1 between strontium and strontium oxide, the mass of strontium oxide formed will be equal to the mass of strontium used.

In this case, the student added 4.93 g of strontium to the crucible. Therefore, the expected mass of strontium oxide formed will also be 4.93 g.

It's important to note that this calculation assumes that the reaction proceeds to completion, meaning that all of the strontium reacts with oxygen. In actual laboratory conditions, the yield of the reaction may be less than 100% due to factors such as incomplete reaction, side reactions, or product loss.

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The calculations listed provide a comprehensive understanding of the thermodynamic performance of the Rankine cycle power plant and the water requirements of the plant.

This is a thermodynamics problem involving an ideal Rankine cycle power plant that uses water as its working fluid. The problem requires the calculation of various parameters, including the work done by the turbine, work consumed by the pump, heat input, heat rejected, efficiency, and mass flow rates of water and cooling water.

The problem also requires a comparison of the mass flow rate of cooling water to the residential water use of a person in the US. The solution to this problem involves applying the principles of thermodynamics, specifically the Rankine cycle, and using relevant equations to calculate the required parameters.

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Answer:

liquefaction

liquefaction is a process when a something turns into a liquid.

Explanation: