Identify the reactants and products at each electrode in the overall reaction for this voltaic cell.

Chemical species: Mg2+(aq), H+(aq), H2(g), Mg(s)

Product or reactant

1.905 M is the concentration in m (moles/l) of a solution that is 12.0% by weight of nitric acid.

To calculate the concentration in moles per liter (M) of a 12.0% by weight nitric acid (HNO₃) solution, follow these steps:
1. Determine the molecular weight of HNO₃:
HNO₃ = 1 (H) + 14 (N) + 3 × 16 (O) = 1 + 14 + 48 = 63 g/mol
2. Convert the percentage concentration to a mass concentration:
12.0% by weight means that there are 12.0 g of HNO₃ in 100 g of solution.
3. Calculate the moles of HNO₃ in the 100 g solution:
moles = mass / molecular weight
moles = 12.0 g / 63 g/mol = 0.1905 mol
4. Determine the volume of the solution:
Assume that the density of the solution is close to that of water, which is 1 g/mL.
Since there are 100 g of solution, the volume would be approximately 100 mL or 0.1 L.
5. Calculate the concentration in moles per liter (M):
concentration (M) = moles / volume
concentration (M) = 0.1905 mol / 0.1 L = 1.905 M
The concentration of the solution is approximately 1.905 M.

For more such questions on concentration , Visit:

https://brainly.com/question/26255204

#SPJ11

Option B: voluntary muscles are the muscles which have complete control and are responsible for all kinds of movements.

Animals' muscles are the types of tissue that cause movement or motion. Voluntary refers to action taken of one's own free will or will. All of the muscles that are linked to the skeleton are voluntary muscles, hence these muscles are also referred to as skeletal muscles or striated muscles because of the way their muscle fibres give them a striated, or stripy, appearance. This, therefore, tells us that option B is he right choice.

The only muscles that can be actively manipulated are those in the skeleton. Since the muscles are connected to the bones, pulling on them moves the bones. Skeletal muscles are used for every conscious movement a person makes.

To know more about skeletal muscles, refer to the following link:

https://brainly.com/question/12252128

#SPJ4

The car can go 30 miles on one gallon of gas.

Distance is the sum of an object's movements, regardless of direction. Distance can be defined as the amount of space an object has covered, regardless of its starting or ending position.

Vehicles running on compressed natural gas (CNG) operate similarly to those driven by gasoline and equipped with spark-ignited internal combustion engines. The engine operates similarly to a gasoline engine. In a fuel tank, or cylinder, usually at the back of the car, natural gas is kept.

Gallons of gas used by car = 4

distance covered by car = 120 miles

the distance which can be covered by Aubree's car on one gallon of gas =120/4 = 30 miles

To learn more about distance click here

https://brainly.com/question/26711747

#SPJ4

If one does not observe any difference in the TLC after 20 minutes, it shows that the reaction was not carried out or did not take place.  In such a case, one should repeat the reaction under optimal conditions.

In such a case, you should consider rechecking the reaction or the analytical technique used. This situation suggests that the reaction may be unsuccessful due to a technical issue such as failure to provide necessary conditions for the reaction to occur. It may also imply that the reaction being analyzed did not undergo any significant transformation, hence no difference was observed.

One can solve this problem by changing the solvent and considering the pH of the solution to provide optimal conditions for the reaction to occur. A more sensitive analytical method could also be employed to detect small changes or differences. The primary cause of the orange color is impurities present in the product, which are subsequently reduced to form the final product through sodium bisulfite treatment. When cooled, if no crystals form, it indicates that the product did not form, and the reaction did not take place.

This can result from an incorrect ratio of reactants, the purity of reagents, or incorrect reaction conditions. In such a case, one should repeat the reaction under optimal conditions.

To know more about optimal conditions visit:

https://brainly.com/question/30547120

#SPJ11

a. 2683.168 g

b. 2683.168 g

c. 663.468 g

Given

Compounds

Required

The mass

Solution

Mass = mol x MW

a) P4010 (MW=283.9 g mol−1)

mass = 6.15 x 283.9 g mol−1

mass = 1745.985 g

b) AgC2H302 (MW=436.2875 g/mol)

mass = 6.15 x 436.2875 g/mol

mass = 2683.168 g

c) Fe(CN)2 (MW=107.881 g/mol)

mass = 6.15 x 107.881 g/mol

mass = 663.468 g

When adding aqueous NH₃ to the combined AgCl-Hg₂Cl₂, the AgCl dissolves while the Hg₂Cl₂ remains unchanged.


When adding aqueous NH₃ to the combined AgCl-Hg₂Cl₂, the AgCl dissolves, forming a complex ion [Ag(NH₃)₂]⁺ as AgCl is a salt of a weak acid and strong base. Thus, NH₃ reacts with AgCl to form soluble complex ion [Ag(NH₃)₂]+, giving a transparent solution.  

On the other hand, Hg₂Cl₂ doesn't dissolve as it is not a salt of a weak acid and strong base, and it is a less reactive compound. Hence, it does not react with NH₃, leaving the precipitate undisturbed.  

Thus, the net reaction taking place is given as:
AgCl + 2NH₃ → [Ag(NH₃)₂]+ + Cl⁻
Hg₂Cl₂ + 2NH₃ → Hg₂Cl₂ + 2NH₃

Thus, when adding aqueous NH₃ to the combined AgCl-Hg₂Cl₂, the AgCl dissolves while the Hg₂Cl₂ remains unchanged.

Learn more about precipitate here:

https://brainly.com/question/31141813

#SPJ11

Answer: Plate movement is thought to be driven by a combination of the motion of the seafloor away from spreading ridges due to variations in topography and density changes in the crust.

Hope this helps

Answer:

false

Explanation:

magnetic field lines can be accurately observed using *iron filling*

Answer:

protons because they have the most positive charge

If you then increase the intensity of the 4.5 eV light, you will notice that the photons would come off at higher speeds.

Light intensity refers to the strength or amount of light produced by a specific lamp source.

Intensity of light measures of the wavelength-weighted power emitted by a light source.

Mathematically, the intensity of light source is given as;

I = P/A

where;

Increasing the light intensity (photon energy per second per unit area) increases the rate at which electrons leave the metal, and the electrons have more kinetic energy.

Thus,  if you then increase the intensity of the 4.5 eV light, you will notice that the photons would come off at higher speeds.

Learn more about intensity of light here: https://brainly.com/question/28145811

#SPJ1

Answer:

\(2H_2O\rightarrow 2H_2+O_2\)

Explanation:

Hello there!

In this case, for the reaction by which water is decomposed to molecular hydrogen and oxygen:

\(H_2O\rightarrow H_2+O_2\)

It is necessary to perform the inspection balance process since there is a dissimilar number of atoms of oxygen on both sides; therefore, by putting a 2 on water we balance oxygen:

\(2H_2O\rightarrow H_2+O_2\)

But now, there are four hydrogens on the left; therefore, we put a 2 on hydrogen to finally balance it:

\(2H_2O\rightarrow 2H_2+O_2\)

And obviously, the coefficient in oxygen is an unwritten 1.

Best regards!

Hubble space telescopes is used to understand the universe

Telescopes have opened our eyes to the universe and early telescopes showed that Earth was not the center of the universe and as was previously believed and they also showed mountains and on the moon and then later telescopes have revealed geography and weather on the planets in our solar system for understand the universe hubble space telescopes is used and by viewing from the other side of the sky the hubble space telescope allows astronomers to see the universe without the distortion and that occurs as light passes through the Earth's atmosphere in this way telescopes important in helping us understand the universe

Know more about telescopes

https://brainly.com/question/3314004

#SPJ1

1.  the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.

2.  the final concentration of KOH after adding 550 mL of water to 125 mL of 3.01 M KOH solution is approximately 0.557 M.

1.) If 125 mL of water is added to 45.3 mL of a 0.71 M NaOH solution, the resulting solution will be a diluted NaOH solution. The addition of water will increase the total volume while reducing the concentration of NaOH. To determine the final concentration of NaOH, we need to consider the conservation of moles.

First, let's calculate the moles of NaOH in the initial solution:

moles of NaOH = volume (in L) × concentration (in M)

moles of NaOH = 0.0453 L × 0.71 M = 0.0321433 moles

After adding 125 mL (0.125 L) of water, the total volume of the solution becomes 0.0453 L + 0.125 L = 0.1703 L.

To find the final concentration, we divide the moles of NaOH by the total volume:

final concentration of NaOH = moles of NaOH / total volume

final concentration of NaOH = 0.0321433 moles / 0.1703 L ≈ 0.189 M

Therefore, the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.

2.) If 550 mL of water is added to 125 mL of a 3.01 M KOH solution, the resulting solution will also be a diluted solution. Again, we will apply the conservation of moles to determine the final concentration of KOH.

First, calculate the moles of KOH in the initial solution:

moles of KOH = volume (in L) × concentration (in M)

moles of KOH = 0.125 L × 3.01 M = 0.37625 moles

After adding 550 mL (0.55 L) of water, the total volume of the solution becomes 0.125 L + 0.55 L = 0.675 L.

To find the final concentration, divide the moles of KOH by the total volume:

final concentration of KOH = moles of KOH / total volume

final concentration of KOH = 0.37625 moles / 0.675 L ≈ 0.557 M

For more such questions on concentration visit:

https://brainly.com/question/28564792

#SPJ8

Answer:Proton, the gold foil experiment indicated that the nucleus has a positive charge.

Potential advantages of using water as a solvent in organic chemistry are:

Disadvantages of using water as a solvent in organic chemistry

Water is the most common liquefaction solvent. Not only is water an environmentally friendly solvent that is inexpensive and does not pollute the environment, but it also facilitates the recovery and recycling of inorganic matter contained in biomass in ionic form for eventual use as fertilizers.

Learn more about water as a solvent:

https://brainly.com/question/1923449

#SPJ4

The theoretical yield of AgCl in this reaction is 63.9 g.

To determine the theoretical yield of AgCl in this reaction, we need to use the balanced chemical equation for the reaction.

AgNO3 + KCl -> AgCl + KNO3

The mole ratio between AgNO3 and AgCl is 1:1, because for every mole of AgNO3 that reacts, 1 mole of AgCl is produced.

We can convert the given masses of AgNO3 and KCl to moles using their respective molar masses:

76.6 g AgNO3 / 169.9 g/mol = 0.45 moles AgNO338.9 g KCl / 74.5 g/mol = 0.52 moles KCl

Since the mole ratio between AgNO3 and AgCl is 1:1, we can expect 0.45 moles of AgCl to be produced in this reaction.

To convert this to grams, we multiply the number of moles by the molar mass of AgCl:

0.45 moles AgCl * 143.3 g/mol = 63.9 g AgCl

Therefore, the theoretical yield of AgCl in this reaction is 63.9 g.

Find out more about AgNO3

brainly.com/question/15665232

#SPJ4

Given that the initial amount of a 20% salt solution is 500 grams, we need to determine the amount 'x' of a 5% salt solution to be added.

Using the formula for mixing solutions, "Initial amount of salt + Additional amount of salt = Final amount of salt," we can calculate 'x'.

The initial amount of salt in the 500 grams of 20% solution is 20% of 500g, which equals 100g.

The additional amount of salt can be determined by considering the concentration of salt in the 5% solution.

For every 100 milliliters (ml) of the 5% solution, there are 5 grams of salt.

Therefore, in 1 liter (1000 ml) or 1000 grams of the 5% solution, there are 5 grams of salt. Consequently, in 'x' grams of the 5% salt solution, the amount of salt present is (5/100) × x grams or x/20 grams.

Setting up the equation, the final amount of salt is given by 100g + x/20g, which should equal (3/20) × 500g (since the final amount is 75g).

Simplifying the equation, we have x/20 + 100 = 75, leading to x/20 = 75 - 100, x/20 = -25, and x = -25 × 20 = -500.

Read more about salt solution

https://brainly.com/question/29281480

#SPJ11

Answer:

KCIO4 → KCI + 2O2

Explanation:

KCIO4 → KCI + 2O2

Answer:

I did it in steps in the picture I just hope it helps you to understand:)

Answer:

C

microwaves, radio waves, infrared light

Explanation:

Three types of electromagnetic waves that have longer wavelengths than the waves that make up visible light are microwaves, radio waves,  and infrared light.

Electromagnetic waves are type of waves that do not require material medium for their propagation.

The frequency of the wave decrease with increase in the wavelength of the wave.

Also, the wavelength of the wave decreases with increase in the frequency of the wave.

Examples of electromagnetic spectrum arranged in increasing wavelength

Thus, three types of electromagnetic waves that have longer wavelengths than the waves that make up visible light are microwaves, radio waves,  and infrared light.

Learn more about electromagnetic waves here: https://brainly.com/question/25847009

The negative impact of the hydroelectric dam is local drought and massive flood by dam breakage.

The hydroelectric dam is the local water storage body that is used to convert the energy of the water to electrical energy. The plants are a huge source of electricity.

The dam is prepared in order to collect the local water in the bodies for the production of electricity. The collection of water required a larger force and pressure-bearing ability, thus dams are constructed with high-quality material.

The dams provide hydroelectricity, but the collection of water has been caused by the local drought conditions in the area. The dam breakage leads to massive floods as well.

Learn more about hydroelectric dam, here:

https://brainly.com/question/25761749

Answer:

more/less depending on if it lost or gained electrons during the ionic bond process

Explanation:

I think the answer is D because their is no the form of covalent bond

Consequently, 4.50 milligrams of KCl yields 216 g of O2 from 4 moles of KClO3, which in turn produces 6 mole of O2. Potassium chloride is created in amounts of 0.0408 mol KCl.

A suspicious mole, on the other hand, is asymmetrical, that means that when it is split in half, its two sides have a different appearance. The typical characteristic of benign moles is circular borders. Wavy borders are frequently seen on moles that have malignancy. If the border isn't smooth, get your belongings out of there.

2 mol KClO3 / 3 mol O2, which equals 4 mol KClO3 / x.

The answer to the equation for x is: x = (3 mol O2 4 mol KClO3) / 2 mmol KClO3 = 6 mol O2.

As a result, 4 moles ions KClO3 result in 6 moles of O2.

2.50 mol KClO3 / 2.50 mol KCl = 2.50 mol KClO3 / x

The  to the equation for x is: x = (2 mol KCl 4.50 mol KClO3) / 2 mol KClO3 = 4.50 mol KCl.

We can calculate the amount of O2 produced using the mole fraction of KClO3 to O2 now that we know humans have 4.50 mole of KCl:

2.50 mol KClO3/3.0 mol O2 ≈ 4.50 mol KClO3/x

In order to find x, we must divide 3 mol O2 by 4.50 mol KClO3 and 2 mol KClO3 by 6.75 mol O2.

In order to translate from moles to grams, we can utilize the molecular concentration of oxygen:

216 g O2 is produced by multiplying 6.75 mol O2 by 32.00 g/mol.

Hence, 216 g of O2 are created from 4.50 moles of KCl.

To know more about mole visit:

https://brainly.com/question/26416088

#SPJ1

Answer:

chloroplasts

Explanation:

In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

we have calculated the number of grams of sulfuric acid, lead (II) acetate, lead (II) sulfate, and acetic acid present in the mixture after the reaction is complete. We have also found out that Pb(C₂H₃O₂) ₂ is the limiting reactant.

When sulfuric acid reacts with lead (II) acetate, solid lead (II) sulfate and acetic acid solution are formed. In the given reaction, we need to find out the limiting reactant and the number of grams of sulfuric acid, lead (II) acetate, lead (II) sulfate, and acetic acid present in the mixture after the reaction is complete. Given: Molar mass of H₂SO₄ = 98 g/mol Molar mass of Pb(C₂H₃O₂)₂ = 325 g/mol Let us find the limiting reactant; we will use the concept of mole ratio.1 mol of H₂SO₄ reacts with 1 mol of Pb(C₂H₃O₂)₂ to form 1 mol of PbSO₄.Now, let's calculate the number of moles of each reactant: No of moles of H₂SO₄ = 13.9/98 = 0.142 moles No of moles of Pb(C₂H₃O₂)₂ = 12.1/325 = 0.0372 moles The mole ratio of H₂SO₄ to Pb(C₂H₃O₂)₂ = 0.142/0.0372 = 3.82 ≈ 4.0Here, the mole ratio of H₂SO₄ to Pb(C₂H₃O₂)₂ is 4.0:1.0, which means that H₂SO₄ is in excess, and Pb(C₂H₃O₂)₂ is a limiting reactant. Hence, Pb(C₂H₃O₂)₂ is the limiting reactant. Now, let us calculate the number of moles of products formed. No of moles of PbSO₄ = 0.0372 × 1 = 0.0372 moles No of moles of HC₂H₃O₂ = 0.142 - 0.0372 = 0.1048 moles Now, let us calculate the mass of each substance. Mass of H₂SO₄ present in the mixture = 13.9 g Mass of Pb(C₂H₃O₂)₂ present in the mixture = 12.1 g Mass of PbSO₄ formed in the reaction = 0.0372 × 303.26 g/mol = 11.29 g Mass of HC₂H₃O₂ formed in the reaction = 0.1048 × 60 g/mol = 6.29 g Thus, the main answer is, Pb(C₂H₃O₂)₂ is the limiting reactant. Mass of H₂SO₄ present in the mixture = 13.9 g Mass of Pb(C₂H₃O₂)₂ present in the mixture = 12.1 g Mass of PbSO₄ formed in the reaction = 11.29 g Mass of HC₂H₃O₂ formed in the reaction = 6.29 g                                                                                                                                                                             We are given the equation: H₂SO₄(aq) + Pb(C₂H₃O₂)₂(aq) → PbSO₄ (s) + 2 HC₂H₃O₂(aq)In the given reaction, we have to find out the limiting reactant, the number of grams of sulfuric acid, lead (II) acetate, lead (II) sulfate, and acetic acid present in the mixture after the reaction is complete. Limiting reactant: Let's find out the limiting reactant in the given reaction. We know that the limiting reactant is the reactant that is entirely consumed or runs out first in a chemical reaction. The mole ratio of H₂SO₄ and Pb(C₂H₃O₂)₂ is 4:1, which means that for every one mole of Pb(C₂H₃O₂)₂, there are four moles of H₂SO₄ available for the reaction. Therefore, the reactant that is present in less amount, i.e., Pb(C₂H₃O₂)₂, is the limiting reactant. The number of moles of Pb(C₂H₃O₂)₂ = 12.1 g ÷ 325 g/mol = 0.0372 moles The number of moles of H₂SO₄ = 13.9 g ÷ 98 g/mol = 0.142 moles The mole ratio of H₂SO₄ and Pb(C₂H₃O₂)₂ = 0.142 ÷ 0.0372 = 3.82 ≈ 4.0Thus, the limiting reactant is Pb(C₂H₃O₂)₂.Now, we can calculate the number of moles of products formed in the reaction: The number of moles of PbSO₄ formed in the reaction is = 0.0372 × 1 = 0.0372 moles The number of moles of HC₂H₃O₂ formed in the reaction is = 0.142 - 0.0372 = 0.1048 moles Now, we can calculate the mass of each substance: Mass of H₂SO₄ present in the mixture = 13.9 g Mass of Pb(C₂H₃O₂)₂ present in the mixture = 12.1 g Mass of PbSO₄ formed in the reaction = 0.0372 moles × 303.26 g/mol = 11.29 g Mass of HC₂H₃O₂ formed in the reaction = 0.1048 moles × 60 g/mol = 6.29 g Therefore, after the reaction is complete, the mixture contains: Sulfuric acid: 13.9 g Lead (II) acetate: 12.1 g Lead (II) sulfate: 11.29 g Acetic acid: 6.29 g

we have calculated the number of grams of sulfuric acid, lead (II) acetate, lead (II) sulfate, and acetic acid present in the mixture after the reaction is complete. We have also found out that Pb(C₂H₃O₂) ₂ is the limiting reactant.

To know more about lead visit:

brainly.com/question/30906996

#SPJ11

Answer:

A.  Sound travels slower in air because of the large distance between air particles

Explanation:

Sound is a mechanical wave that requires a medium for its propagation. Without a medium, sound cannot go through easily or readily. This implies that sound cannot be propagated through a vacuum.