the half cell that is normally chosen to have a potential of zero is

Waves are disturbance that transfer energy through matter or space.

A wave can be described as a disturbance that travels through a medium, transporting energy from one location to another location without transporting matter.

The particles involved in waves move back and forth perpendicularly to the way the wave is going, but don’t move significantly in the direction of the wave. The particles ‘take part’ in the wave by bumping into one another and transferring energy. This is why energy can be transferred, even though the average position of the particles doesn’t change.

Learn more about Waves, here:

https://brainly.com/question/25954805

#SPJ1

                                     What is initial concentration​?

High initial concentration of spilled oil has a negative effect on the biotransformation process that causes a significant lag phase of about 2–4 weeks. Even after biostimulation, at least a week is needed for microorganisms to adapt and the entire bioremediation process may require months and even years to be completed (Atlas, 1995; Zahed et al., 2010a). The rates of uptake and mineralization of many organic compounds by a microbial population depend on the concentration of the compound (Olivera et al., 1997; Rahman et al., 2002).

Answer: they convert heat to electricity.

Explanation:

Answer:

C6H12O6

Explanation:

Molar mass of empirical formula:

12.01+2*1.008+16=30.026

Divide molar mass of molecular formula by 30.026

180/30=~6

Scale up the empirical formula by a factor of 6.

C6H12O2 (glucose)

Answer:

C6H12O2

Explanation:

Scale up the empirical formula by a factor of 6.

C6H12O2 (glucose)

Answer: Because its dissolution is exothermic

Explanation:

The types of bonds being broken and formed will impact the overall energy of the reaction, and this can be determined by examining whether the reaction is endothermic or exothermic.

The type of bonds being broken and formed in a reaction will have a significant impact on the overall energy of the reaction. When strong bonds are broken, more energy is required as compared to breaking weaker bonds.

Similarly, when strong bonds are formed, more energy is released as compared to forming weaker bonds. If the reaction involves breaking strong bonds and forming weak bonds, it will be an endothermic reaction, meaning that it requires energy to occur.

Conversely, if the reaction involves breaking weak bonds and forming strong bonds, it will be an exothermic reaction, meaning that it releases energy.

To learn more about : energy

https://brainly.com/question/30083274

#SPJ11

Answer:

A . The work done stretching a spring is transformed into stored energy in the spring

Explanation:

The work done stretching a spring is transformed into stored energy in the spring is clear indication of the law of conservation of energy.

The law of conservation of energy states that "energy is neither created nor destroyed but transformed from one form to another".

This is an energy transformation process.

Answer:

Explanation:

Sodium bicarbonate,

NaHCO

3

, will decompose to form sodium carbonate,

Na

2

CO

3

, water, and carbon dioxide,

CO

2

2

NaHCO

3(s]

→

Na

2

CO

3(s]

+

CO

2(g]

+

H

2

O

(g]

Notice that you have a

2

:

1

mole ratio between sodium bicarbonate and sodium carbonate. This means that the reaction will produce half as many moles of the latter than whatever number of moles of the former underwent decomposition.

Use sodium carbonate's molar amss to determine how many moles you'd get in that sample

0.685

g

⋅

1 mole NaHCO

3

84.007

g

=

0.008154 moles NaHCO

3

Now, if the reaction were to have a

100

%

yield, it would produce

0.008154

moles NaHCO

3

⋅

1 mole Na

2

CO

3

2

moles NaHCO

3

=

0.004077 moles Na

2

CO

3

Use the molar mass of sodium carbonate to determine how many grams would contain this many moles

0.004077

moles

⋅

105.99 g

1

mole

=

0.4321 g Na

2

CO

3Sodium bicarbonate,

NaHCO

3

, will decompose to form sodium carbonate,

Na

2

CO

3

, water, and carbon dioxide,

CO

2

2

NaHCO

3(s]

→

Na

2

CO

3(s]

+

CO

2(g]

+

H

2

O

(g]

Notice that you have a

2

:

1

mole ratio between sodium bicarbonate and sodium carbonate. This means that the reaction will produce half as many moles of the latter than whatever number of moles of the former underwent decomposition.

Use sodium carbonate's molar amss to determine how many moles you'd get in that sample

0.685

g

⋅

1 mole NaHCO

3

84.007

g

=

0.008154 moles NaHCO

3

Now, if the reaction were to have a

100

%

yield, it would produce

0.008154

moles NaHCO

3

⋅

1 mole Na

2

CO

3

2

moles NaHCO

3

=

0.004077 moles Na

2

CO

3

Use the molar mass of sodium carbonate to determine how many grams would contain this many moles

0.004077

moles

⋅

105.99 g

1

mole

=

0.4321 g Na

2

CO

3

By using the given data, the percent yield for sodium carbonate (Na₂CO₃) is equal to 127.

Percent yield of any data can be calculated as:

% yield = (Actual value / Theoretical value) × 100

In the question actual yield of sodium carbonate is given, which is equal to 2.04 grams. And in the table theoretical yield of sodium carbonate also given, which is equal to 1.60 grams.

Now putting these value in the above equation, we get:

% yield = (2.04 / 1.60) × 100 = 127

Hence, percent yield of sodium carbonate (Na₂CO₃) is 127.

To learn more about percent yield, visit the below link:

https://brainly.com/question/11963853

Answer:

your answer gonna be 20 miles

Answer:

The right option is (c) toaster

Answer: c

Explanation:

An unexpected color change is not a sign that a chemical change has occur. Thus option c is correct.

A chemical change is defined as the transformation of one material into another, the formation of new materials with different properties, and the formation of one or more new substances.

There are basically five types of chemical reaction.

Thus, an unexpected color change is not a sign that a chemical change has occur. Thus option c is correct.

To learn more about  chemical change, refer to the link below:

https://brainly.com/question/8159283

#SPJ2

Answer:

A calorie is the amount of energy needed to raise the temperature of 1 gram of water 1 degree Celsius. The complete combustion of a large kitchen match, for example, gives you about one kilocalorie of heat

The mass of the glycerin, C₃H₈O₃ a nonelectrolyte, that must be dissolved in 200.0 g water to give a solution with the  freezing point of -1.50 °C is 14.8 g.

Mass of solvent = 200.0 g

Depression at freezing point = - 1.50 °C

Kf = 1.86 °C / m

The molality is given as :

0 - ΔT = Kf × m × i

Where ,

ΔT = - 1.50 °C

Kf =  1.86 °C / m

m = molality = ?

i = 1

m = 1.50 / 1.86

m = 0.806 m

The molality = ( mass of solute × 1000) / ( molar mass of solute × mass of solvent)

Mass of solute =( 0.806 ×  92 × 200 ) / 1000

Mass of the solute = 14.8 g

To learn more about freezing point here

https://brainly.com/question/13122709

#SPJ4

The reaction in which precipitation reaction occurs is b. CdSo4(aq) +K2S(aq) → CdS(s) +K2SO4(aq).

A precipitation reaction is a double displacement reaction in which a solid salt is formed. If we look at all the given equations then it's only second reaction in which a solid salt (CdS) is formed.

Precipitation is the process of transforming a dissolved substance into an insoluble solid from a super-saturated solution. The solid formed is called the precipitate

The reaction in which precipitation reaction occurs is b. CdSo4(aq) +K2S(aq) → CdS(s) +K2SO4(aq).

Since, the precipitate is formed only in second equation, the correct choice is B.

To learn more about precipitation reaction check the link below:

https://brainly.com/question/20469884

#SPJ4

Answer:

Na

Sodium is located in the third row of the periodic table, where the 3s3s3, s orbital is being filled. Because sodium is the first of the two 3s3s3, s elements, its ground-state electron configuration contains a single, unpaired 3s3s3, s electron.

Explanation:

its late but ik someone can use it

The ground-state electron configuration for an element contains an unpaired 3s electron is Sodium, Na.

The ground state electron configuration of an element shows a series of how its electrons are arranged in thier orbitals at their  lowest energy state.

The element which contained an unpaired 3s electron is the Alkali metal, Sodium.

Sodium, Na has atomic number of 11 and at ground state and will therefore be written as  1s²2s²2p⁶3s¹   We can also write the condensed form since the core electrons is the same with Ne,  a noble gas which is [Ne]3s1.

The s orbital should contain at most 2 electrons , since for sodium, it has 1 electron in the 3s orbital, we say it is unpaired.

See more here:https://brainly.com/question/2071096

The carbonyl stretching frequency in the infrared spectrum depends on the nature of the carbonyl group and the adjacent functional groups or substituents. Based on this, we can rank the given molecules in terms of their carbonyl stretching frequency, from highest to lowest:

2,4-cyclohexadienone > 2-cyclohexenone > cyclohexenone > cyclohexanone

In general, a carbonyl group adjacent to an electron-withdrawing group will have a higher stretching frequency compared to a carbonyl group adjacent to an electron-donating group.

In 2,4-cyclohexadienone, the two carbonyl groups are conjugated with each other and with the double bonds in the ring, resulting in a very high carbonyl stretching frequency. In 2-cyclohexenone, the carbonyl group is conjugated with the double bond in the ring, resulting in a slightly lower stretching frequency.

In cyclohexenone, the carbonyl group is adjacent to a single double bond in the ring, resulting in a lower stretching frequency compared to 2-cyclohexenone. In cyclohexanone, the carbonyl group is not conjugated with any other functional group, resulting in the lowest carbonyl stretching frequency among the given molecules.

For more question on infrared spectrum click on

https://brainly.com/question/5951360

#SPJ11

Answer:

The process or effect of simplifying a single chemical entity into two or more fragments.

Explanation:

Chemical decomposition, or chemical breakdown, is the process or effect of simplifying a single chemical entity into two or more fragments. Chemical decomposition is usually regarded and defined as the exact opposite of chemical synthesis.

Answer:

What are some examples of decomposition reactions?

Production of calcium oxide or quicklime.

Production of lithium oxide.

Preparation of oxygen and carbon dioxide.

In metallurgy, for the extraction of metals from their oxides and chlorides through electrolytic decomposition.

The statements which are true about heterogeneous mixtures are they settle out, they exhibit the tyndall effect and they exhibit brownian motion.

Heterogeneous mixtures are those mixtures in which composition of their constituent partiles are not identical or even, they may vary place to place.

Hence, options (1), (2) & (4) are correct.

To know more about heterogeneous mixtures, visit the below link:

https://brainly.com/question/1080253

Answer:

A,B,D

Explanation:

i got it right

The boiling point of phosphorus trichloride using the thermodynamic information in the aleks data tab is approximately 77°C.

To calculate the boiling point of phosphorus trichloride using the thermodynamic information in the ALEKS data tab, we need to find the standard enthalpy of vaporization (ΔHvap) and the standard entropy of vaporization (ΔSvap) for the compound.

From the ALEKS data tab, we can find the following thermodynamic information for phosphorus trichloride:

ΔHf°(g) = -284.5 kJ/mol (standard enthalpy of formation of gas phase)
S°(g) = 311.7 J/mol∙K (standard entropy of gas phase)

Using the Clausius-Clapeyron equation:

ln(P2/P1) = (-ΔHvap/R)((1/T2) - (1/T1))

where P1 and P2 are the vapor pressures at temperatures T1 and T2, respectively, and R is the gas constant (8.314 J/mol∙K).

We can rearrange the equation to solve for the boiling point (T2) at a given vapor pressure (P2):

T2 = (-ΔHvap/R)((ln(P2/P1)) + (1/T1))^-1

Assuming a standard pressure of 1 atm (760 torrs), we can use the following data to calculate the boiling point of phosphorus trichloride:

P1 = 1 atm
P2 = 760 torr = 0.997 atm
ΔHvap = ΔHf°(g) + RT
ΔSvap = S°(g)

Substituting the values into the equation, we get:

ΔHvap = (-284.5 kJ/mol) + (8.314 J/mol∙K)(298 K) = -260.6 kJ/mol

T2 = (-ΔHvap/R)((ln(P2/P1)) + (1/T1))^-1
T2 = (-(-260.6 kJ/mol)/(8.314 J/mol∙K))((ln(0.997/1)) + (1/298 K))^-1
T2 = 77°C (rounded to the nearest degree)

Therefore, the boiling point of phosphorus trichloride is approximately 77°C.

Learn more about boiling point at https://brainly.com/question/40140

#SPJ11

Mass of Mg is 2.39g and Mass of MgO is 3.48 g. Mg is a chemical element Magnesium.

The average mass of an element's atoms expressed in atomic mass units is the element's atomic mass. The mass of each isotope is multiplied by its abundance to produce the atomic mass, which is a weighted average of all the isotopes of that element.

The atomic mass of an element, measured in amu, is equal to the mass in grammes of one mole of an element. This relationship between the atomic mass and the mole concept is important in chemistry.

Mass of Mg = Mass of crucible and Mg - Mass of empty crucible = 38.06g - 35.67g = 2.39g

Mass of MgO = 39.15 g - 35.67 g = 3.48 g

To learn more about atomic mass refer :

https://brainly.com/question/3187640

#SPJ1

Answer:

The empirical formula of the compound is CH2.

Explanation:

To determine the empirical formula of a compound, we need to find the simplest whole-number ratio of atoms present in the compound. Here, the percentage composition of hydrogen (H) and carbon (C) in the compound, we can calculate the empirical formula.

Here, Percentage of hydrogen (H) = 3.25%

Percentage of carbon (C) = 19.36%

Convert the percentages to grams.

Assume we have 100 grams of the compound, which allows us to directly convert the percentages to grams.

Mass of hydrogen (H) = 3.25 g

Mass of carbon (C) = 19.36 g

Convert the masses to moles.

To convert grams to moles, we need to divide the masses by the molar masses of hydrogen and carbon.

Molar mass of hydrogen (H) = 1.008 g/mol

Molar mass of carbon (C) = 12.01 g/mol

Number of moles of hydrogen (H) = Mass of hydrogen / Molar mass of hydrogen

Number of moles of hydrogen (H) = 3.25 g / 1.008 g/mol ≈ 3.22 mol

Number of moles of carbon (C) = Mass of carbon / Molar mass of carbon

Number of moles of carbon (C) = 19.36 g / 12.01 g/mol ≈ 1.61 mol

Determine the empirical formula.

Divide the number of moles by the smallest number of moles obtained.

Dividing the moles of carbon (1.61 mol) by the smallest value (1.61 mol) gives 1.00.

Dividing the moles of hydrogen (3.22 mol) by the smallest value (1.61 mol) gives 2.00.

The simplest whole-number ratio of atoms is approximately C1H2

Therefore, the empirical formula of the compound is CH2.

Learn more about empirical formula here, https://brainly.com/question/1603500

#SPJ11

Answer:

Reaction between an oxygen and  a phosphorus will produce oxides of phosphorus.

Explanation:

Reaction between oxygen and phosphorus produces four atoms of phosphorus with five atoms of oxygen. Sometimes it produces two atoms of phosphorus and five atoms of oxygen and sometimes four atoms of phosphorus and six atoms of oxygen. It does so depending upon the availability of oxygen. The size of phosphorus atom  interferes with the ability to form a double bonds to the other elements, such as nitrogen, oxygen, etc.

B because decomposition reactions are often caused by the application of heat to break up the bonds within the molecules, which will form the molecules that made up the decomposed molecule.

Answer:

I believe it would be 2

Explanation:

if there are 2 nitrogen molecules then there would have to be 2 hydrogen molecules but this could be completely wrong

if this happens to be right, ur welcome :3 here's a Jay Jay pic for u cuz why not

Answer:

Anwer is A  0.60

Explanation:

Step 1

% by mass:

Mass of solute ---- 100 of solution

Mass of solution = mass of solute + mass of solvent = 55.0 g + 137 g = 192 g

Solute = NH4Cl

Solvent = Water (H2O)

-----------------------------

Step 2

Procedure:

55.0 g NH4Cl --------- 192 g solution

X ---------- 100 g solution

X = 29 g NH4Cl = 29 % by mass approx.

Answer: 29 % by mass

Lithium carbonate contains 18.78% mass percent lithium. It should be noted that a compound's overall percentage composition of all its constituent elements is always 100%.

Only depression related to bipolar illness is authorized for lithium use. When combined with an antidepressant, it may also be successful in alleviating other types of depression, although further research is required. Discuss the possibility of adding lithium with your doctor if you are on an antidepressant but are still experiencing symptoms.

This substance is employed for the treatment of mania and depression (bipolar disorder). By bringing certain natural compounds back into equilibrium in the brain, it helps to calm mood and lessen excessive behavior.

To know more about Lithium Carbonate visit:

https://brainly.com/question/15127937

#SPJ1

Electrical energy is changed into mechanical energy which takes place when the cook uses the blender. So, the correct option is B.

Electrical energy is defined as the energy related to the forces on electrically-charged particles and the motion of those particles whose energy is supplied by a combination of current and electric potential that is delivered by a circuit.

Electrical energy is present all around us in many different forms, where some of the best examples of electrical energy are using car battery electrical energy in electrical systems, wall outlet to transfer electrical energy to charge our phones, and our muscles that uses electrical energy to contract and relax. Electrical energy is changed into mechanical energy which takes place when the cook uses the blender.

Therefore, the correct option is B.

Learn more about Electrical energy, here:

https://brainly.com/question/16182853

#SPJ1

Answer:

folloow mw tiktokjonathan_dion21 for a free cookie

Explanation: