c0nvert this to mass in grams: 1.75 x 10^23 atoms Pb

The number of moles of H+ that would be left in the beaker after the reaction goes to completion is 0.0142 moles.

Initial volume of C_5H_5N = 75.0 mL

Initial volume of HCl = 100.0 mL

C_5H_5N concentration = 0.350

MHCl concentration = 0.405

MKb of C_5H_5N = 1.7 × 10⁻⁹ moles of

C_5H_5N reacted = 0.0263 moles

moles of H+ reacted = 0.0405 moles

Now, we will calculate the moles of C_5H_5N that react:

moles = (volume in L) × (concentration)

= (75.0/1000) L × 0.350 moles/L

= 0.02625 moles

Therefore, 0.02625 moles of C_5H_5N react with 0.02625 moles of HCl.

We can see from the balanced chemical equation that each mole of C_5H_5N that reacts with HCl produces a mole of

H+.C_5H_5N + HCl → C_5H_5NH+Cl-0.02625 moles of C_5H_5N reacts to form 0.02625 moles of H+This means that there were originally

0.0405 - 0.0263 = 0.0142 moles of H+ left.

Now, we need to calculate the moles of OH- that are produced by the reaction of

C_5H_5Nwith water:Kb = [C5H5NH+][OH-]/[C5H5N]1.7 × 10⁻⁹

= (x)(x)/(0.350 - x)x

= √[1.7 × 10⁻⁹ × 0.350]

= 5.08 × 10⁻⁵ moles/L

Now, we can find the moles of OH-

produced:moles = (volume in L) × (concentration)

= (75.0/1000) L × 5.08 × 10⁻⁵ moles/L

= 3.81 × 10⁻⁶ moles

These OH- ions will react with the remaining H+ ions in the solution. Therefore, the total number of moles of H+ that will react with OH- ions is:0.0142 moles of H+ + 3.81 × 10⁻⁶ moles of OH-

= 0.0142 moles of H+ (to 4 significant figures)

Thus, the number of moles of H+ that would be left in the beaker after the reaction goes to completion is 0.0142 moles.

Therefore, 0.0142 moles of H+ left.

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The ratio 1:1 of Rb and N react to form ionic compound rubidium nitride.

Rb(-1) + N(-3) ⇒ Rb₃N

Group 1 element with valency 1 is rubidium. Rubidium also gives up one of its outermost electrons to form a cation in order to achieve noble gas conformation. In contrast, nitride requires the addition of three electrons to become stable enough to form an anion. Rubidium nitride is an ionic binary compound and so we add ide suffix after the anion.

First, we need to be aware of the atoms' symbols. Rubidium, which is Rb, and nitride N are present in this. Write the symbols next to the names in the same order. The valency of the atom is indicated

Hence, rubidium and nitrogen forms binary compound.

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Answer:

Tundra are cold bioms. They include poler bears wolfs rabbits etc

Explanation:

The electronic configuration of Krypton is- 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6.

Start by assigning oxidation numbers to the atoms that take part in the reaction.

notice that the oxidation state of zinc changes from zero on the reactants' side to +2 on the products' side, which means that it is being oxidized.

Now take a look at nitrogen's oxidation state. Notice that some nitrogen atoms keep their oxidation state constant, i.e. +5 on both sides of the equation, but that other nitrogen atoms change their oxidation state from +5 to -3, which implies that they are being reduced. Balance the nitrogen atoms first by multiplying the nitric acid by 2. Since you're in acidic solution, you can balance the hydrogen atoms by adding protons,

H

+

, to the side that lacks hydrogen, and oxygen atoms by adding water molecules to the side that lacks oxygen.

Since you only need to balance the hydrogen atoms present on the reactants' side.

Hope that can start you off! And hope that helps!

The balanced chemical equation of the given reaction is written as follows:

\(\rm Zn(s)+2HNO_3(aq) \rightarrow Zn(NO_{3})_2(aq)+H_2(g)\)

A balanced chemical equation is a symbolic representation of a chemical reaction that shows the exact number of atoms of each element present in both the reactants and the products.

In a balanced equation, the total number of atoms of each element on the reactant side of the equation must be equal to the total number of atoms of that element on the product side of the equation.

This ensures that the law of conservation of mass is upheld, which states that matter cannot be created or destroyed in a chemical reaction, only rearranged.

The balanced chemical equation is written above.

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To prepare a buffer of pH 9.71 using NH3 and NH4Cl, the base-to-salt ratio should be 1:1.

Let's understand this in detail:

The buffer solution should be prepared using NH3 and NH4Cl to achieve a pH of 9.71.

In this case, NH3 is the base, while NH4Cl is the salt component. The pKa and the concentration of the acid and base components determine the pH of a buffer solution.

The Henderson-Hasselbalch equation is used to calculate the pH of the buffer solution:

pH = pKa + log ([A-]/[HA])Here, A- is the concentration of the base, while HA is the concentration of the acid (in this case, NH4Cl).

For the buffer to have a pH of 9.71, we must calculate the pKa of NH4Cl. NH4Cl is an ammonium salt, and its acid dissociation constant is calculated using the Kb of NH3:

Kw = Ka x Kb

Ka x Kb = Kw

Kb = Kw/Ka = 10^-14 / 5.6 x 10^-10 = 1.8 x 10^-5

The pKa of NH4Cl is calculated as: pKa = 14 - pKb

pKa = 14 - 4.74 = 9.26

Now, we can use the Henderson-Hasselbalch equation to calculate the base-to-salt ratio for the buffer:

pH = 9.71pKa = 9.26[A-]/[HA] = 1 (since we want a 1:1 ratio of base to salt)

9.71 = 9.26 + log (1)0.45 = log (1)Antilog (0.45) = 2.82

Therefore, the base-to-salt ratio should be 1:1 (NH3:NH4Cl).

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Answer:

16Ag +S8 --> 8Ag2S

Explanation:

You know that you are starting out with 8 sulfer's on the reactant side, so there must be an equal amount on the product side. So, to get 8 sulfer's on the product side we multiply the entire (Ag2S) by 8 to get 8Ag2S. Now on the reactant and product side we have an equal amount of sulfer. However, the product side has 16 silvers. To balance this out, on the reactant side we multiply the number of Ag by 16 to get 16 Ag ont he reactant and product sides. Now the reactant and product sides have the same number of each element :)

The scientist who wrote the universal law of gravitation was Sir Isaac Newton.

The scientist that wrote the universal law of gravitation was Isaac Newton.

The universal law of gravitation states that every object in this universe attracts every other object around it with a force, whose magnitude is directly proportional to the product of their masses and indirectly proportional to the square of the distance between them.

The universal law of gravitation was first published by the scientist Issac Newton in the year 1687.

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Electron and molecular geometries, respectively, for hydrogen sulfide H₂S is electron geometry is linear and molecular geometry is bent

Molecular geometry is the three dimensional arrangement of atom that constitute a molecule and there are two lone pair present on the sulfur central atom in the H₂S molecule hence it will contract the bond pair and this make its shape appear like a bent structure and therefore the molecular geometry or shape of H₂S is bent while its electron geometry is tetrahedral because of four electron group around the sulfur

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Answer:

Search Engine: A search engine is a kind of website through which users can search the content available on the Internet. For this purpose, users enter the desired keywords into the search field. Then the search engine looks through its index for relevant web pages and displays them in the form of a list. The Internet is a huge source of information & resources and to access the resource from the Internet there are some kinds of software, this software is known as a Search Engine.

Web Browser: The web browser is an example of application software that is developed to retrieve and view information from web pages or HTML files present on web servers. The first web browser was invented by Sir Tim Berners-Lee in 1990 and the very first graphical web browser was developed in 1993 and is named the Mosaic. After that, various web browsers were developed.

From 60 grams of ethane, we can expect the production of 6 moles of water.

The balanced chemical equation for the combustion of ethane is:

C2H6 + 3O2 → 2CO2 + 3H2O

From the equation, we can see that for every 1 mole of ethane (C2H6) that reacts, 3 moles of water (H2O) are produced.

To calculate the number of moles of water produced from 60 grams of ethane, we need to first determine the number of moles of ethane:

moles of ethane = mass of ethane ÷ molar mass of ethane

moles of ethane = 60 g ÷ 30 g/mol

moles of ethane = 2 mol

So, for 2 moles of ethane that react, we can expect the production of 3 x 2 = 6 moles of water.

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Answer:

I would choose biodegradable materials and inexpensive to produce

Answer:

The things that she should include in her list should be that synthetic polymers are flexible, can be recycled at a lower price, are lightweight as compared to natural ones, are resistant and are most importantly they are being produced in large amounts.

Explanation:

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Answer:

18 molecules of oxygen or o2

Explanation:

Because a carbon dioxide molecule has 2 oxygen molecules and 1 carbon molecule, this would mean that, to make 9 co2 molecules, you would need

18 because 9x2 is 18 molecules of 02

and for carbon molecules its literally 9 because for just 1

co2 it contains 1 carbon molecule

hope this helped

Answer:

Explanation:

In this case, the fitness magazine compared the food we eat with a battery because the food provides energy for the human body to perform its daily activities.

The banana is an excellent source of energy, as it is a fruit with a high content of carbohydrates and fructose, it is an excellent food to be eaten before physical exercise, as it provides the muscles with enough energy to increase performance before and after exercise. , is a fruit rich in potassium, magnesium, phosphorus, and vitamins a and c, which gives greater strength and energy.

A chemical reaction wherein two molecules combine to form one larger product is called a condensation reaction.

The process of joining two or more atoms or molecules to form a single product is known as a chemical reaction. These reactions can be divided into two categories: combination and decomposition reactions.

During the process of condensation reaction a small molecule is eliminated as a byproduct, such as water or alcohol.

The condensation reaction can be utilized to create a variety of polymers by joining smaller monomers together into more complex molecules.

This reaction can be utilized to create peptide bonds between amino acids in proteins, ester bonds between carboxylic acids and alcohols, and glycosidic bonds between sugars, for example.

In addition to the condensation reaction, there are other types of chemical reactions.

For example, Hydrolysis, decomposition, single displacement, double displacement, acid-base, redox, and oxidation reactions are all examples of different types of chemical reactions.

In summary, a chemical reaction wherein two molecules combine to form one larger product is called a condensation reaction.

This process is used to create a variety of polymers by joining smaller monomers together into more complex molecules.

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The electron domain geometry is trigonal bipyramidal while the molecular geometry of the compound is seesaw.

The shapes of molecules is determined by the number of electron pairs on the valence shell of the central atom in the molecule. These electron domains include lone pairs and bond pairs.

The lone pairs only contribute towards the electron domain geometry and not the molecular geometry. SCl4 has five electron domains hence its electron domain geometry is trigonal bipyramidal. The molecular geometry of the compound is seesaw.

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The transition state is the structure in a reaction with the highest potential energy.

Option C is correct.

In a synthetic response, a change state is a transitional stage among reactants and items. A temporary arrangement of atoms at the reaction's potential energy barrier is known as a transition state. The activation energy of the reaction is determined by the amount of energy required to cross the potential energy barrier.

The energy of a reaction changes as the reaction progresses and the reactants are transformed into products.

The process by which atoms are rearranged to produce one or more distinct substances is known as a chemical reaction. Changes that can be seen include the production of heat and light, the formation of gas bubbles, and color shifts in the reactants during chemical reactions. In synthetic responses, molecules revise, bond, or fall to pieces.

The reactants are the atoms in the reaction's initial state, and the products are the atoms in the reaction's final state. Through the formation and breaking of chemical bonds, the reactants become the products. The equilibrium of a reaction is always maintained, which means that both sides of the equation have the same number of atoms.

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a) Fe + Cu(NO3)2 -> Fe(NO3)2 + Cu;

b) Zn + MgSO4 -> ZnSO4 + Mg;

c) 2HBr + Sn -> SnBr2 + H2;

d) H2 + NiCl2 -> 2HCl + Ni;

e) 2Al + CoSO4 -> Al2(SO4)3 + Co. These are the balanced chemical reactions.

(a) Fe(s) + Cu(NO3)2(aq) → Cu(s) + Fe(NO3)2(aq)

(b) Zn(s) + MgSO4(aq) → NR

(c) 2HBr(aq) + Sn(s) → SnBr2(aq) + H2(g)

(d) H2(g) + NiCl2(aq) → Ni(s) + 2HCl(aq)

(e) 2Al(s) + 3CoSO4(aq) → 3Co(s) + Al2(SO4)3(aq)

In response (a), iron is more receptive than copper and in this way uproots copper from the copper(II) nitrate arrangement.

In response (b), zinc is less receptive than magnesium, so no response happens.

In response (c), hydrobromic corrosive is more receptive than tin and in this way uproots tin from the strong state, shaping tin(II) bromide and hydrogen gas.

In response (d), hydrogen gas is less receptive than nickel and hence no response happens.

In response (e), aluminum is more receptive than cobalt and hence dislodges cobalt from the cobalt(II) sulfate arrangement.

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The complete question is:

Using the activity series(Table 4.5), write balanced chemical equations for the following reactions. If no reaction occurs, simply write NR. (a) Iron metal is added to a solution of copper(II) nitrate; (b) zinc metal is added to a solution of magnesium sulfate; (c) hydrobromic acid is added to tin metal; (d) hydrogen gas is bubbled through an aqueous solution of nickel(II) chloride; (e) aluminum metal is added to a solution of cobalt(II) sulfate.

The mass number is the atomic mass rounded to a whole number, i.e., which is a value that rounds the atomic weight to a near number.

The expression mass number is used in chemistry to denote the total amount of subatomic particles i.e. atomic protons and neutrons, which are present in a given atom (for example hydrogen has only one proton and one neutron).

Therefore, with this data, we can see that mass number denotes the overall amount of protons and neutrons present in a given atom, which is equal to one in the hydrogen atom

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The students conducting an analysis of an unknown substance repeatedly missed the mark. to identify the unknown. one possible unavoidable error that influenced their results is the incorrect measurements , faulty equipment.

The students conducting an analysis of an unknown substance repeatedly missed the mark. they were identifying the density of their mystery element or compound. for his, they recorded both the volume and mass of their sample. the possible errors that will influenced the results is the incorrect measurement and fault in the equipment.

The density is given as :

D = m / V

D = density

m = mass

V = volume

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To oxidize 10 g of cyclohexanol, 200 mL of 5.0% w/v bleach (NaOCl) is needed.

Before calculating the volume of bleach, we need to find:

\(Mass of cyclohexanol = 10 g\\Concentration of bleach (NaOCl) = 5.0\% w/v\\Convert the mass of cyclohexanol to moles.\\Molar mass of cyclohexanol (C6H12O) = 100.16 g/mol\\Moles of cyclohexanol = mass / molar mass\\Moles of cyclohexanol = 10 g / 100.16 g/mol\)

Determine the stoichiometry between cyclohexanol and bleach.

From the balanced equation for the oxidation of cyclohexanol, we know that:

1 mole of cyclohexanol reacts with 1 mole of bleach (NaOCl)

Calculate the moles of bleach required.

\(Moles\ of\ bleach\ (NaOCl) = moles\ of\ cyclohexanol\)

Calculate the volume of bleach using its concentration.

\(Volume\ (in\ mL) of\ bleach = (moles\ of\ bleach / concentration\ of\ bleach) * 1000\\Volume (in mL) of bleach = (moles of bleach / 0.05) * 1000\\Substituting the value of moles of bleach\\Volume (in mL) of bleach = (moles of cyclohexanol / 0.05) * 1000\\Substituting the value of moles of cyclohexanol\\Volume (in mL) of bleach = (10 g / 100.16 g/mol) / 0.05 * 1000\)

Simplifying:

\(Volume\ (in\ mL)\ of\ bleach = 199.64\ mL\)

Therefore, to oxidize 10 g of cyclohexanol, you would need approximately 200 mL of 5.0% w/v bleach (NaOCl).

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If the sample of magnesium used in a lab was contaminated with another metal that doesn't react with hydrochloric acid, then the results obtained in the experiment would be affected.

This is because the data collected during the experiment would reflect the reaction between hydrochloric acid and the contaminated sample instead of pure magnesium. As a result, the following changes in results might have been observed:

1. The mass of the contaminated sample would be higher than the mass of pure magnesium.

2. The rate of reaction between the contaminated sample and hydrochloric acid would be slower than the reaction between pure magnesium and hydrochloric acid.

3. The volume of hydrogen gas collected from the reaction would be lower than the volume of hydrogen gas collected in the reaction between pure magnesium and hydrochloric acid.

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When 1-bromohexane reacts with sodium ethoxide (NaOCH2CH3), a nucleophilic substitution reaction takes place. The ethoxide ion (CH3CH2O-) acts as a nucleophile and replaces the bromine atom in 1-bromohexane.

When 1-bromohexane reacts with sodium ethoxide (NaOCH2CH3), a nucleophilic substitution reaction occurs. The ethoxide ion (CH3CH2O-) acts as a nucleophile, attacking the carbon atom bonded to the bromine atom in 1-bromohexane. The bromine atom is replaced by the ethoxy group (-OCH2CH3), resulting in the formation of a new compound.

The product of this reaction is 1-hexanol, which has the chemical formula CH3(CH2)4CH2OH. In the substituted product, the bromine atom is replaced by a hydroxyl group (-OH). The ethoxy group is attached to the carbon atom previously bonded to the bromine.

The reaction proceeds via an SN2 (substitution nucleophilic bimolecular) mechanism, where the nucleophile attacks the carbon atom and simultaneously displaces the leaving group (bromine). The resulting product is an alcohol, specifically 1-hexanol, which contains a hydroxyl group at the sixth carbon of the hexane chain.

Overall, the reaction between 1-bromohexane and sodium ethoxide yields 1-hexanol as the substitution product.

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Answer:

Japan, China, the U.S., Indonesia, Chinese Taipei and South Korea have been named by Pew Charitable Trusts on a “shame list” of countries responsible for overfishing tuna in the Pacific. According to Pew, the “Pacific 6” are responsible for 80 percent — 111,482 metric tons in 2011 — of the annual catch of bigeye tuna.

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Answer:

The amount of product that can be formed based on the limiting reactant is called the theoretical yield.