Give the charge of the stable ion formed by each of the following. Include the sign (+ or -) and magnitude (numerical value) of the charge in every case. (Note: Give only the charge, not the formula of the ion.)
1. A group 2A metal
2. A group 3A metal

Answers

Answer 1

The charges on the ions are;

1. A group 2A metal - 2+

2. A group 3A metal - 3+

What is a charge?

A charge could be positive or negative. We know that a positive charge is formed when there is an excess of protons compared to electrons in a specie. On the other hands, a negative ion is one in which there are more electrons than protons.

Now we know that metals mostly form positive ions. The magnitude of the charge on the ions depends on the group in the periodic table to which the metal belongs.

The charges on the ions are;

1. A group 2A metal - 2+

2. A group 3A metal - 3+

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Related Questions

Which group of elements has the most similar chemical properties? (1 point)


carbon, nitrogen, and oxygen


uranium, plutonium, and lead

fluorine, chlorine, and iodine


aluminum, silicon, and phosphorus

Answers

Answer:

Fluorine,chlorine,Iodine

Explanation:

What change is illustrated in the diagram?
HELP ME PLS!

Answers

The change illustrated in the diagram is atoms that formed molecules; option C.

What is matter?

Matter is anything that has mass and occupies space.

Matter can exist as pure or impure substances.

Pure substances are the elements and compounds.

Impure substances are the mixtures.

All forms of matter are composed of atoms.

When atoms of substances combine, the form molecules of the same element or molecules of a compound.

Atoms can also form ions by the loss or gain of electrons.

Therefore, the illustrated diagram shows atoms of the same substance combining to form molecules.

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What orbitals overlap to form the c-h bond in ethene (h 2c=ch 2)? s-p p-p s-sp3 s-sp2 s-sp

Answers

The orbitals overlap to form the c-h bond in ethene, the s-sp2 orbital overlaps to create the C-H bond.

What is sp2 hybridisation?

Three sp2 orbitals, each with a 33% s character and a 67% p character, are created when one s orbital and two p orbitals hybridize. When an atom has three electron groups surrounding it, this kind of hybridization is necessary.

Trigonal hybridization is another name for the sp2 process. One's' orbital and two 'p' orbitals of equivalent energy are combined to create the new hybrid orbital known as sp2. At 1200, a combination of s and p orbitals developed in trigonal symmetry.

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determine whether an observational or experimental study is appropriate to address the following statement. a gas station owner wants to identify if a need for additional staffing exists.

Answers

If a gas station owner wants to identify if a need for additional staffing exists, an observational study could suffice here.

What is an observational study?

The term observational study refers to a study in which the research only dependent on what could be obviously seen with out trying to compare the effects of an independent on a dependent variable by empirical means.

If the owner of a gas station wants to know if there is need for more staffing. All he needs is to observe the rate of work in the hands of the current staff strength and make projection. Only a observational study could suffice here.

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2 some organisms feed on other organisms without immediately killing them. what term describes this act? a. commensalism b. parasitism c. mutualism d. predation

Answers

Answer:

b

Explanation:

It's because parasites actually don't kill the host immediately but after at least a good time the host starts to experience some side effects which can lead to death

it takes to break a carbon-carbon single bond. calculate the maximum wavelength of light for which a carbon-carbon single bond could be broken by absorbing a single photon.

Answers

One mole of the C-C bond can be broken with the provided energy of 348 kJ.

Thus, the amount of energy needed to dissolve one C-C bond is 348 x 1000 / 6.023 x 10^23.

Required energy is 5.78 x 10^-19 Joules.

The relationship between wavelength and energy is

E = hc / λ

where wavelength is λ

Planck's constant is h.

the speed of light, c

5.78 X 10^-19 Joules = 6.62 X 10^-34 X 3 X 10^8 / λ

The highest wavelength of light at which a single photon may break a carbon-carbon single bond is 3.44 X 10-7 m = λ

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A 0.10 m solution of lactic acid, ch3chohco2h, has a ph of 2.43. what is the ka? (for simplicity, just abbreviate lactic acid as ha.)

Answers

The value of K(a) is 1.4 × 10⁻⁴.

The pH scale is used in chemistry to determine whether an aqueous solution is basic or acidic. Historically, pH stood for "potential of hydrogen." The pH values of acidic solutions are typically lower than those of basic or alkaline solutions.

A weak monoprotic acid, lactic acid (HA) dissociates in accordance with the following equilibrium:

HA ⇋ H⁺ + A⁻

K(a) = [H⁺] × [A⁻] / [HA]

If C is the initial acid concentration and x is the dissociated concentration of each product, then the expression at equilibrium is:

K(a) = x² / ( C− x )

Now substituting the values C = 0.10 m and the ph of lactic acid is 2.43 in:

x = [H+]

[H+] = 10^{− pH}

10⁻²·⁴³ = 3.63 × 10⁻³ M

Therefore,

K(a) = x² / ( C − x )

K(a) = ( 3.63 × 10⁻³ M)² / ( 0.10 M − 3.63 × 10⁻³ M )

K(a) = 1.4 × 10⁻⁴

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Carbon dioxide is a greenhouse gas that shields the planet from the sun's uv radiation and helps prevent global warming.
a. true
b. false

Answers

False, Carbon dioxide is a greenhouse gas doesn't shields the planet from the sun's uv radiation and helps prevent global warming.

When particular gases, referred to as greenhouse gases, build up in the Earth's atmosphere, the greenhouse effect occurs. Carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), ozone (O3), and fluorinated gases are examples of greenhouse gases.The sun's light can reach Earth's surface thanks to greenhouse gases, which then trap the heat that is reflected back from the surface inside Earth's atmosphere.That is ozone layer which shields the planet from the sun's uv radiation and helps prevent global warming. It is layer in stratosphere which doesn't allow harmful sunrays to enter earth surface because it can cause many health issues to human being like skin cancer etc.

Thus it is not cabondioxide that protect planet from UV rays.

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Mercury metal is poured into a graduated cylinder that holds exactly 20 mL. The mercury used to fill the cylinder has a mass of 306.0 g. From this information, calculate the density of mercury.
*
Don't forget the units!

Answers

Taking into account the definition of density, the density of mercury is 15.3 g/mL.

Definition of density

Density is defined as the property that matter has to compress into a given space and it allows us to measure the amount of mass in a certain volume of a substance.

The expression for the calculation of density is:

density= mass÷ volume

It can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.

Density of mercury

In this case, you know that:

Mass= 306 gVolume= 20 mL

Replacing in the definition of density:

density= 306 g÷ 20 mL

Solving:

density= 15.3 g/mL

In summary, the density of mercury is 15.3 g/mL.

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which indicator is most appropriate for the titration of acetic acid with naoh? the ka for ch3co2h is 1.8×10−5. explain the reasoning for your answer:

Answers

An endpoint is observed using a phenolphthalein indicator when titrating CH3COOH against NaOH.

What is phenolphthalein ?

Phenolphthalein  is a shorthand notation for the chemical compound C20H14O4, which is frequently written as "HIn," "HPh," "phph," or just "Ph." In acid-base titrations, phenolphthalein is commonly employed as an indicator. It is a member of the group of colors known as phthalein dyes.

For use in studies, phenolphthalein is typically dissolved in alcohols because it is only marginally soluble in water. It is a weak acid that can dissolve and lose H+ ions. The double-deprotonated phenolphthalein ion is fuchsia, whereas the nonionized phenolphthalein molecule is colorless.

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someone pls explain how I do this work

Answers

Answer:

Explanation:


Element    #of protons     Mass #.      # of electrons      Atomic #.   Neutron

 Se.               34.                   78.96.                  34                     34           45
             

Si.                 14.                      28.                       14.                   14           14

         

H.                   1.                       1.                       1                         1               0


Ca.                  20.                 40.078.                20.                  20.              21

Fe.                  26.                  56.                         26.                 26.             30

Na.                  11.                    23.                       11.                    11.                12

The resting potential of a neuron that is submerged in a solution with zero extracellular potassium will __________________ because __________________________.

Answers

The answer would be for this question will be hyperpolarize; the driving force for potassium to exit the cell increases.

The resting potential of a neuron that is submerged in a solution with zero extracellular potassium will hyperpolarize because the driving force for potassium to exit the cell increases.

Hyperpolarization is the process in which the membrane potential looks good on more negative at a specific spot on the neuron's membrane where as depolarization is when the membrane potential became less negative.

At this point at which the neuron is hyperpolarized, in the middle of –70 mV and –75 mV. After hyperpolarization the potassium passage encloses and the natural permeability of the neuron to sodium and potassium permits the neuron to come back to its recline potential of –70 mV.

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How to find the substrate concentration of the master mix?

Answers

The master mix now contains: 0.16 mL of 10 µM ethanol, 0.2 ml of 10 µM NAD, and 0.54 mL buffer. The substrate concentration of the master mix is

a = 0.0016 mM

This is further explained below.

How do find the substrate concentration of the master mix?

Generally, Ethanol is acting as the substrate for this master mixture.

The following formula is used in order to determine the amount of ethanol that is included in the master mix:

CiVi= CfVf

Ci equals the starting concentration of ethanol, which is equal to 10 muM. 0.16 milliliters is equal to the volume of ethanol that was consumed initially.

Cf = final concentration, often known as the amount of ethanol present in the master mix = a Vf = final volume, which also refers to the final volume of the master mix = 1 milliliter

Introducing the values into the equation:

CiVi= CfVf

10 uM X 0.16 ml = a X 1 ml

a = (10 uM X 0.16 ml ) / 1ml

a = 1.6 uM

a = 1.6/ 1000 mM ... ( 1\muM = 1/1000 mM )

a = 0.0016 mM

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The desired product will not form if a strong base is applied to the starting material right away in reaction 1. why does this synthetic route fail to product the desired alkene product?

Answers

Synthetic route fail to product the desired alkene product because the base will deprotonate the alcohol and form an alkoxide product.

What to you mean by synthetic route?

When a chemist working in lab embarks upon the synthesis of a compound, he or she follows a “synthetic route”— a series of steps by which a chemical compound is assembled from the smaller, less complex bulk chemicals. These routes can be devised based on chemist’s experience and by searching the scientific literature to learn from the experience of other chemists who may have attempted similar synthetic paths in the past.

How do you choose a synthetic route?Chemical yieldingThe Cycle timeNumber of the chemical steps and convergenceUse of the higher molecular weight protecting group and reagentsNumber of the energy-consuming operations

Implementing this approach is the key to reducing API development time as complexity grows and budgets shrink. As with any risk management plan, goal is to be proactive in finding and mitigating sources of risk. This is accomplished by the removing unwanted variability in each stage of a process.

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calculate the ph of a solution prepared by diluting 3.0 ml of 2.5 m hcl to a final volume of 100 ml with h2o

Answers

The pH of a solution prepared by diluting 3.0 mL of 2.5 M HCl to a final volume of 100 mL with H₂O is 1.12.

Given data :

Original concentration of HCl before dilution (C₁) = 2.5 M

Volume of HCl to be diluted (V₁) = 3.0 mL

Final volume of HCl after diluting (V₂) = 100 mL

Final concentration of HCl after dilution (C₂) = ?

To Calculate the final concentration of solution, equation used is -

                               C₁.V₁ = C₂.V₂

Putting values in equation,

2.5 M x 3.0 mL = C₂ x 100 mL

C₂ = 2.5 M x 3.0 mL

             100 mL

C₂ = 0.075 M

When HCl is diluted with H₂O, it dissociates. The chemical equation of dissociation reaction of HCl is -

                       HCl(aq) ⇄ H⁺(aq) + Cl⁻(aq)

Concentration of HCl = concentration of H⁺ = 0.075 M

Using equation of pH,

                       pH = -log[H⁺]

pH = -log[0.075]

pH = 1.12

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4. What is the frequency of light that has a wavelength of 4.25 x 10^-8 m?

Answers

Frequency of light = 0.705 x 10^16  per second.

Frequency: It is the quantity of waves passing a particular area in a predetermined period of time. Unit of frequency is second ^-1.

Wavelength: A wave's wavelength is the separation between its two subsequent crests or troughs. It is calculated using the wave direction. Unit of wavelength is meters.

Speed of light: the rate at which light waves move through various substances. In particular, it has now been determined that the speed of light in a vacuum is exactly 299,792,458 meters per second.

Inverse correlation exists between frequency and wavelength.

f ∝ 1/ λ

∴f = c /λ

where,

c is the speed of light (3 x 108 m/s), and f represents frequency.

λ is wavelength

∴ f = 3 x 10^8 / 4.25 x 10^-8

  f = 0.705 x 10^16  /s

Hence, frequency of the light wave will be 0.705 x  10^16  /s

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In the first 70.0 ss of this reaction, the concentration of nono dropped from 1.32 mm to 0.400 mm . calculate the average rate of the reaction in this time interval.

Answers

The reaction will be thermodynamically spontaneous if the temperature is below 175 K.

According to this formula, when:

ΔG = ΔH  - T*ΔS

when the reaction is thermodynamically spontaneous ΔG < 0

∴ ΔH - T* ΔS = 0

∴T*ΔS = ΔH

∴ T = ΔH / ΔS

when we have:

ΔH = -70KJ

and ΔS = -0.4 KJ/K

So by substitution:

T =  -70KJ /- 0.4

 =  175 K

∴the certain temperature below which the reaction will be thermodynamically spontaneous is 175

What is thermodynamics ?

The rules of thermodynamics explain how energy in a system evolves and whether a system can make use of its environment to produce productive work.

In an automobile, the engine is a thermodynamic system that burns fuel inside the cylinder; the radiator, piston, exhaust system, and ambient air make up the system's environment.

Thermodynamics abides by four laws. They discuss heat, work, temperature, and entropy. They are employed in chemistry, among other sciences, as well as in thermodynamics.

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10.0g of potassium iocide is dissolved in 50.0g of water. Calculate the percent mass of the solute in the solution

Answers

Answer:

100/6% =16.67%

Explanation:

16.67%

Complete the flowchart about the scientific method

Answers

Answer:

A scientific problem is often discovered when an observation is made, which leads to a question.

A hypothesis is formed when an explanation is proposed for an observation.

Testing a proposed explanation requires designing an experiment.

For the results of the experiment to be accepted, the experiment must produce the same results when repeated.

An explanation may become a theory if the same results are found after many tests.

2. 3.80 km to meters
T

Answers

2.380km= 2e+3m.

A kilometer is a unit of measurement, as is the mille. It additionally translated as 10,000-steps meters, creating a strolling aim that, thru the decades, by some means has become embedded in our global awareness and fitness trackers. however contemporary exceptional science suggests we do now not need to take 10,000 steps an afternoon, which is ready five miles, for the sake of our health or toughness.

The CDC recommends that on foot 10,000 steps a day is sufficient to stay in a suitable form, but the general public needs to hit 20,000 steps as a part of their fitness desires. if you need to try the 20000 steps a day weight reduction, you can expect notable results: decreased belly fat, progressed sleep, boosted immune response, and so on. As excellent as it sounds, taking walks 20000 steps a day of weight loss has its cons. They include emotions of tiredness and starvation, plus it steals a big chew of your day.

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What is the ph of a solution that results from adding 0.059 mol naoh (s) to 1.47 l of a buffer comprised of 0.391 m benzoic acid, c6h5cooh and 0.391 m sodium benzoate, c6h5coona?

Answers

The pH of a solution that results from adding 0.059 mol Na (s) to 1.47 l of a buffer comprised of 0.391 m benzoic acid, c6h5cooh and 0.391 m sodium benzoate, c6h5coona is 5.418.

What do you mean by pH?

pH is a measure of how acidic/basic the water is. The range goes from 0 - 14, with 7 being the neutral. pHs of less than 7 indicate the acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of relative amount of free hydrogen and hydroxyl ions in the water. Water that has more free hydrogen ions is the acidic, whereas water that has more free hydroxyl ions is basic. Since the pH can be affected by chemicals in the water, pH is an important indicator of water that is changing chemically. pH is reported in the "logarithmic units". Each number represents a 10-fold change in acidity/basicness of the water. Water with a pH of five is ten times more acidic than the water having a pH of six.

pH, quantitative measure of acidity or basicity of aqueous or other liquid solutions. The term, widely used in the chemistry, biology, and agronomy, translates the values of the concentration of the hydrogen ion—which ordinarily ranges between about 1 and 10−14 gram-equivalents per liter—into the numbers between 0 and 14.

molarity of NaOH= 0.059mol/1.47L

                            = 0.0401 M

Molarity of acid= 0.391 M

Molarity of buffer= 0.391 M

The pKa value of = 4.19

Henderson - Hasslbach Equation:

pH = pKa + log(salt/acid)

     =pKa+ log[( salt + C)/(acid-C)]

      = 4.19 + log[(0.391 M + 0.0401 M)/ (0.391 M - 0.0401 M)]

      = 4.19 + 1.22

      = 5.418

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Destabilization that occurs in a molecule when two non bonded atoms are too close together is called?

Answers

Destabilization that occurs in a molecule when two non bonded atoms are too close together is called Van der Waals repulsion.

When two non bonded atoms come close together then in such situation there are two types of forces that come into play.

First one is Van der Waal attractive forces and the second one is van der Waal repulsion forces.

Van der Waal attractive forces are the forces of attraction between the electronic cloud of one atom/molecule with the nucleus of the other atom/molecule and van der Waal repulsive forces are the force of repulsion between the electronic cloud of the both the atoms/molecules and the repulsion between the nucleus of both the atoms/molecules.

Attractive forces causes stabilization whereas repulsive forces causes destabilization.

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How many grams of lead (ii) oxide will be produced by the decomposition of 2.50 g of lead (ii) carbonate?

Answers

The mass of lead (ii) oxide produced by the decomposition of the reaction will be 2.09 grams.

To find the mass, the given data's are,

Mass of PbCo₃ = 2.50 g

Molar mass of PbCo₃  = 267.21 g/mole

Molar mass of PbO  = 223.2 g/mole

What is decomposition reaction?

A decomposition reaction can be defined as a chemical reaction in which one reactant breaks down into two or more products.

The given balanced chemical reaction is:

PbCo₃(s)  → PbO (s) + Co₂ (g)

Here, calculating the moles of PbCo₃,

Moles of PbCo₃ = ( Mass of PbCo₃ / Molar mass of PbCo₃ )

= ( 2.50 g /267.21 g/mole )

= 0.00936 moles.

Now we have to calculate the moles of PbO,

From the reaction, we conclude that

As, 1 mole of PbCo₃ react to give 1 mole of PbO,

So, 0.0936 moles of PbCo₃ react to give 0.00936 moles of PbO.

So, Calculating the mass of PbO,

Mass of PbO = Moles of PbO × Molar mass of PbO

= 0.00936 moles × 223.2 g/mole

= 2.09 moles.

Therefore, the mass of lead (ii) oxide produced by the decomposition of the reaction will be 2.09 grams.

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A weak acid ha has a pka of 5.0. if 1.0 mol of this acid and 0.1 mol of naoh were dissolved in one liter of wat,er what would be the final ph?

Answers

A weak acid ha has a ph of 5.0. if 1.0 mol of this acid and 0.1 mol of naoh were dissolved in one liter of wat,er The weak acid is partly neutralised by the alkali: HA(aq)+NaOH(aq)→NaA(aq)+H2O(l).

What is ph?

Chemistry uses a pH scale to categorize an aqueous solution's acidity or basicity. The term pH originally meant "potential of hydrogen." In comparison to basic or alkaline solutions (solutions with higher H+ ion concentrations), acidic solutions have lower pH values measured.

The p Hscale is logarithmic and inversely proportional to the amount of hydrogen ions present in the solution.

M is equal to mol dm3. At a temperature of 25 °C (77 °F), basic solutions are defined as those with a pH greater than 7, and acidic solutions as those with a pH lower than 7. Solutions having a pH of 7 are regarded as neutral at this temperature (e.g. pure water). Temperature affects the pH's neutral value, which drops to below 7 if the temperature exceeds 25 °C.

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you are runnig a reaction to make a carboxylic acid, but what appears to be the product spot is too low on the tlc plate and is elongated, i.e., it isn't a nice circle but is stretched out a lot. to make this spot rounder and move a little farther, which of the following is most likely to

Answers

Add a trace of acidic acid to the eluting solvent mixture.

What is TLC?

TLC is the acronym for thin layer chromatography. This type of chromatography occurs when we have an eluting solvent and a stationary phase such as a thick adsorbent paper on a support.

In a chromatography, there is a stationary phase and a mobile phase. The stationary phase here is the sold support while the mobile phase is the eluting solvent which carried the mixture to be separated.

This stationary phase is spotted with the mixture to be eluted and the chromatogram is observed on the stationary phase. We know that an acid would be eluted by a polar solvent.

If the chromatogram is a stretched circle that appears rounder as you move a little farther then you have to add a trace of acidic acid to the eluting solvent mixture.

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Missing parts;

You are running a reaction to make a carboxylic acid, but what appears to be the product spot is too low on the tlc plate and is elongated, i.e., it isn't a nice circle but is stretched out a lot. To make this spot rounder and move a little farther, which of the following is most likely to work?

Using a more polar eluting solvent mixture.

Adding a trace of ammonium hydroxide to the eluting solvent mixture.

 

Adding a trace of water to the eluting solvent mixture.

 

Adding a trace of methanol to the eluting solvent mixture.

 

Adding a trace of acidic acid to the eluting solvent mixture.

how are the balanced or unbalanced forces related to rotational motion?​

Answers

Answer: When the forces are balanced, neither of the teams, but if the rope moves away in a particular direction or if a team wins, then the forces applied by both teams are unbalanced. Practically anything that moves is a result of the exertion of unbalanced forces on it.

Explanation:

The balanced or unbalanced forces are related to rotational motion by the occurrence of the constant and altered changes in the speed of the object.

What is Rotational motion?

Rotational motion may be defined as a type of motion that involves the movement of an object along an axis in a circular path with a common angular velocity.

Balanced forces maintain the state of an object at a constant speed. It means that its velocity remains unchanged during the course of the time interval. While unbalanced forces stimulate the alteration in the velocity of an object. It either reduces or enhances the initial speed of an object.

Therefore, the balanced or unbalanced forces are related to rotational motion by the occurrence of the constant and altered changes in the speed of the object.

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a mixture consisting of 1 mol of h2o(g) and 1 mol co(g) is placed in a 5 l reaction vessel at 800 k. at equilibrium, 0.411 mol co2(g) is present as a result of the reaction co(g) h2o(g) ⇀↽ co2(g) h2(g). what is kc at 800 k?

Answers

If you have .387mol steam, then you used .387 mol CO, and 3*.387 mole H2.  to seek out the molar concentration of CO and H2, subtract what was used from the initial.  the quantity of CH4 of course is the same as H2O.

co(g) h2o(g) ⇀↽ co2(g) h2(g).

What is equilibrium?

Equilibrium is the state in which market supply and demand balance each other, and as a result, prices become stable. Generally, an over-supply for goods or services causes prices to travel down,  which ends up in higher demand. The balancing effect of supply and demand leads to a state of equilibrium.

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ortuso, roberto d., and kaori sugihara. "detailed study on the failure of the wedge calibration method at nanonewton setpoints for friction force microscopy." the journal of physical chemistry c, vol. 122, no. 21, american chemical society (acs), may 2018, pp. 11464–74, doi:10.1021/acs.jpcc.8b03583.

Answers

'The detailed study on the failure of the Wedge Calibration Method at Nanonewton Setpoints for Friction Force Microscopy', by the author Ortuso, Roberto Diego and Kaori, Sugihara, published in the journal of physical chemistry C., 2018, vol. 122, no. 21, p. 11464-11474, American Chemical Society (acs) is widely popular calibration technique in friction force microscopy to convert raw lateral laser deflection signals (volt) into the forces (newton).  

There has been recent trends nanotechnologies which demands the use of the method at nanonewton force ranges, but this range is a failure for small forces.  

Conventional Wedge calibration method has been a failure at nanonewton force ranges and studies has been going on to identify the reason behind the failure of this method.

The equation used shows experimental errors by order of magnitude at setpoints due to its mathematical expressions.

This low tolerance against experimental errors in nanonewton force ranges is the reason for failure of wedge calibration method.

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Explain why the value obtained for the density of the metal is likely to have a larger percentage
error than that found for the liquid.

Answers

When comparing the density of metals to that of liquids, the percentage error is more likely to rise.

What is liquid density?

A liquid's density is a gauge of how heavy it is relative to the amount being measured. The liquid that weighs heavier is more dense if you weigh two liquids with similar volumes or amounts. A substance less dense than water will float when it is gradually introduced to the water's surface.

How is the density determined?

The mass to volume ratio of an object determines its density. The unit of density is frequently grams per cubic centimeter (g/cm3). Keep in mind that the volume is measured in cubic centimeters, not grams (the same volume as 1 millilitre).

Briefing :

Direct measurement of a solid's volume is impossible. A solid, especially one with an irregular shape, has a higher potential for measurement error than a liquid.

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at a particular temperature, the solubility of co₂ in water is 0.13 m when the partial pressure is 1.5 atm. what partial pressure (in atm) of co₂ would give a solubility of 0.080 m?

Answers

The partial pressure of CO₂ which will give a solubility of 0.080 m is 0.93 atm, at a particular temperature.

Using Henry's Law,

Henry's law states that, solubility of a gas in a liquid is directly proportional to the partial pressure of gas and mole fraction of gas is proportional to partial pressure of the gas.

It is expressed as -

Sgas = Kh Pgas

where,

Sgas = Solubility of

Kh = Henry's law constant

Pgas = Partial pressure of gas

Putting the values in the above expression,

Sgas = Kh Pgas

0.13 M = Kh x  1.5 atm

Kh = 0.13 M

         1.5 atm

Kh = 0.086

For partial pressure,

Sgas = Kh Pgas

0.080 M  = 0.086 x Pgas

Pgas = 0.080 = 0.93 atm

            0.086

Partial pressure of CO₂ is 0.93 atm

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