In a precipitation reaction between FeCl2(aq) and LiOH(aq), 11.3 mL of 0.210 M FeCl2(aq) completly reacted with 34.3 mL of LiOH(aq). What was the molarity of LiOH(aq)

When an F atom becomes an F-ion, the F atom gains an electron.

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The Fluoride ion given has a -ve charge onto it. Thus in order to become stable Fluorine gains an electron. Thus option b is correct.

The elements in the periodic table try to attain the stable noble gas configuration in the order to become stable. The noble gas configuration has the elements to be less reactive.

When the atom loses an electron in order to become more stable,  a +ve charge has been implemented onto the ion.

When the atom gains an electron to become stable, a -ve charge has been added to the ion.

The Fluoride ion given has a -ve charge onto it. Thus in order to become stable Fluorine gains an electron. Thus option b is correct.

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The law of diminishing marginal rate of substitution indicates that the rate at which one input can be substituted for another decreases as the quantity of one input increases, leading to isoquants being bent toward the origin.

In other words, as the quantity of one good increases, the individual is willing to sacrifice fewer units of the other good to obtain an additional unit of the first good. This reflects a diminishing rate of substitution between the two goods.

The reason why the law of diminishing marginal rate of substitution suggests that isoquants must be bent toward the origin is rooted in the concept of diminishing marginal utility. As more units of a particular input (e.g., labor or capital) are added while holding other inputs constant, the additional output gained from each additional unit of the input will decrease. This diminishing marginal productivity leads to a decreasing MRS.

When isoquants (which represent different combinations of inputs that produce the same level of output) are bent toward the origin, it reflects the fact that as more of one input is used, the amount of the other input that needs to be substituted decreases. This bending signifies the diminishing MRS and captures the idea that a larger quantity of one input can be substituted for a smaller quantity of the other input to maintain the same level of output.

Overall, the law of diminishing marginal rate of substitution indicates that the rate at which one input can be substituted for another decreases as the quantity of one input increases, leading to isoquants being bent toward the origin.

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Answer: a) pH = 2.56 , acidic

b) pH = 2.38, acidic

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

\(pH=-\log [H^+]\)

a) \([H^+]=2.7\times 10^{-3}\)

Putting in the values:

\(pH=-\log[2.7\times 10^{-3}]\)

\(pH=2.56\)

Thus as pH is less than 7, the solution is acidic.

b) \([H^+]=4.1\times 10^{-3}\)

Putting in the values:

\(pH=-\log[4.1\times 10^{-3}]\)

\(pH=2.38\)

Thus as pH is less than 7, the solution is acidic.

1) 1.5625 moles of H2 are needed. 2) 0.78125 moles of CO are needed. 3) 1.5625 moles of H2 are needed to produce 50.0 g of CH4O.

Methanol is produced by reacting carbon monoxide and hydrogen at high temperatures and pressure according to the chemical equation CO(g) + 2H2(g) → CH4O(g). From the equation, we can see that two molecules of hydrogen are required for every one molecule of methanol. Therefore, we can find the number of moles of hydrogen required by dividing the number of moles of methanol by two.

To produce 25.0 g of methanol, we need 1.5625 moles of H2. Similarly, we can find the number of moles of CO required to produce methanol by dividing the number of moles of methanol by one, which yields 0.78125 moles of CO. To produce 50.0 g of methanol, we need 3.125 moles of H2 and 1.5625 moles of methanol.

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Answer:

A. The atoms have more energy together than separated.

Explanation:

There are several reasons why a chemical bond could take place. Adding things like heat or pressure stimulate the atoms to force a reaction to take place. But when it comes down to it, the intramolecular forces of the electrons  pull each other to form chemical bonds (represented by Valence electrons). The stronger these are, the more likely they are going to bond.

Atoms with lower forces typically don't typically bond with other atoms of lower forces.

Answer:

This law states that the volume and temperature of a gas have a direct relationship: As temperature increases, volume increases, when pressure is held constant. Heating a gas increases the kinetic energy of the particles, causing the gas to expand.

Explanation:

Considering the Charles's law and STP conditions, the volume of the gas at standard temperature is 12.61 L.

Charles's law establishes the relationship between the volume and temperature of a gas sample at constant pressure.

This law says that for a given sum of gas at constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases. That is, the volume is directly proportional to the temperature of the gas.

Mathematically, Charles's law states that the ratio between volume and temperature will always have the same value:

\(\frac{V}{T} =k\)

Considering an initial state 1 and a final state 2, it is fulfilled:

\(\frac{V1}{T1} =\frac{V2}{T2}\)

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C (or 273 K) are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

In this case, you know:

Replacing in the definition of Charles's law:

\(\frac{13.4 L}{290 K} =\frac{V2}{273 K}\)

Solving:

\(V2= 273 K\frac{13.4 L}{290 K}\)

V2= 12.61 L

Finally, the volume of the gas at standard temperature is 12.61 L.

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Hey there!:

Density = 0.6 g/mL

Volume = 150 mL

Mass = ?

therefore:

D = m / V

0.6 = m / 150

m = 0.6 x 150

m = 90.0 g of sugar

Hope this helps!

To make 1 liter of a 10% NaCl solution from a solid stock, you will require the following materials and containers.MaterialsSolid NaClDistilled water1-Liter volumetric flask250-mL volumetric flask 2-beakersProcedureTo prepare 1 liter of a 10% NaCl solution, the following procedure should be followed:Measure out 100g of NaCl using a balance.

Measure the weight of an empty 250-mL volumetric flask.Add the NaCl to a 250-mL beaker and add a small amount of distilled water to it to dissolve the NaCl.Carefully pour the dissolved NaCl solution into the 250-mL volumetric flask. Add distilled water to the mark on the flask to make up the volume. Stopper the flask and invert it several times to mix the solution.Measure the weight of the 1-Liter volumetric flask.Add the 250-mL volumetric flask solution to a 1-Liter volumetric flask.Add distilled water to the mark on the flask to make up the volume.

Stopper the flask and invert it several times to mix the solution.The final volume of the solution will be 1 liter of a 10% NaCl solution.PrecautionsEnsure the NaCl has completely dissolved before adding more water to avoid making a less concentrated solution.Measure the weight of the volumetric flask before and after adding the solution to calculate the volume of solution that was added.Use distilled water to prepare the solution.

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Explanation:

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Answer:

amount of compost is the first answer

Answer:

do the math then hope sorry man free answer

Explanation:

Answer:

Molarity is the number of moles of a substance per litre. Thus to calculate the molarity, divide the number of moles with the volume in litres.

For example, 0.2 moles of NaCl is dissolved in water to form a solution of 150 mL.

Volume in litres= 150 ÷1000= 0.15 L

Molarity

= 0.2 ÷0.15

= 1.33 M (3 s.f.)

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Answer:

i looked it up on google and i kept seeing mass if that helps, ill copy and paste it

Explanation:Electrons are much smaller in mass than protons, weighing only 9.11 × 10-28 grams, or about 1/1800 of an atomic mass unit. ... Electrons contribute greatly to the atom's charge, as each electron has a negative charge equal to the positive charge of a proton.

I found this, hope it helps

Heterogeneous nucleation is favored over homogeneous nucleation because it requires a lower energy barrier for the nucleation process. Heterogeneous nucleation involves the formation of a new phase on the surface of an existing foreign material, while homogeneous nucleation occurs spontaneously within a uniform medium.

Heterogeneous nucleation is favored over homogeneous nucleation because it occurs on surfaces or interfaces that are different from the bulk material, providing a lower energy barrier for nucleation to occur.

In contrast, homogeneous nucleation occurs within the bulk material, where there is a higher energy barrier due to the lack of nucleation sites.

As a result, heterogeneous nucleation is more likely to occur and is typically associated with faster and more efficient crystallization processes.

Homogeneous nucleation, on the other hand, can lead to the formation of unwanted impurities and defects in the material due to the high energy required for nucleation.

The presence of the foreign surface in heterogeneous nucleation reduces the overall energy required, making it more likely to occur compared to homogeneous nucleation.

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the bond order for one carbon-carbon bond in the benzene molecule, taking σ and π bonding into consideration will be 1.5.

In the benzene molecule, there are 6 carbon atoms arranged in a hexagonal ring, with alternating single and double bonds. Each carbon atom is covalently bonded to two other carbon atoms, with one single bond and one double bond.

To calculate the bond order for one carbon-carbon bond in benzene, we need to take into account both the σ (sigma) and π (pi) bonding. The σ bond is formed by the overlap of two atomic orbitals along the internuclear axis, while the π bond is formed by the overlap of two atomic orbitals perpendicular to the internuclear axis.

In the case of benzene, each carbon-carbon bond has one σ bond and one π bond. The total bond order for each bond can be calculated as the sum of the bond orders for the σ and π bonds. The bond order for a σ bond is 1, while the bond order for a π bond is 0.5.

Therefore, the bond order for one carbon-carbon bond in the benzene molecule is:

Bond order = (σ bond order) + (π bond order) = 1 + 0.5 = 1.5

So the bond order for one carbon-carbon bond in the benzene molecule is 1.5.

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Answer:

the equilibrium constant is zero

Option d. All of these are disadvantages of using corn to manufacture ethanol as a fuel additive.

Using corn to manufacture ethanol as a fuel additive has multiple disadvantages, including all of the options mentioned:

a. Ethanol contains far less energy than other fuels: Ethanol has a lower energy content compared to gasoline, which means that vehicles running on ethanol-blended fuel may have reduced fuel efficiency and mileage.

b. Ethanol absorbs water and would thus corrode fuel pipelines used in transport: Ethanol has a hygroscopic nature, meaning it readily absorbs water from the environment. This characteristic can lead to corrosion and damage to fuel pipelines and storage tanks, which can be a logistical and maintenance challenge.

c. Use of corn as a fuel source drives up the cost of grain worldwide: Corn is a primary feedstock for ethanol production, and using it for fuel purposes can create increased demand and competition with food production. This increased demand can lead to higher prices for corn and other grains, affecting food prices and potentially causing food security concerns.

Therefore, the correct answer is option d.

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The density of the cube has a height of 9.30 mm is 0.892 g/ml.

The mass (m) per unit volume (V) of an object is its density.

ρ = m / V

We must first determine the cube's volume (V) using its dimensions in order to get its density:

V = length x width x height

V = 23.70 mm x 9.72 mm x 9.30 mm

V = 2113.18 mm^3

As the units of density are grams per milliliter, the next step is to convert the cube's mass from grams to milliliters:

[13:32, 2/28/2023] +91 95550 65997: 1 gram = 1 milliliter

Therefore, the volume of the cube in milliliters (V) is:

V = 1.885 g

Lastly, we can get the density of the cube using the density formula:

ρ = m / V = 1.885 g / 2113.18 mm^3

ρ = 0.000892 g/mm^3

Therefore, the density of the cube is approximately 0.000892 g/mm^3 or 0.892 g/ml.

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If more \(H_{2}\) and \(N_{2}\) are added to the reaction 3\(H_{2}\) + N2 → 2\(NH_{3}\) after it reaches equilibrium, two events will occur Shift in Equilibrium and Increased Yield of \(NH_{3}\)

1. Shift in Equilibrium: According to Le Chatelier's principle, when additional reactants are added, the equilibrium will shift in the forward direction to consume the added reactants and establish a new equilibrium. In this case, more \(NH_{3}\) will be produced to counteract the increase in \(H_{2}\) and \(N_{2}\).

2. Increased Yield of \(NH_{3}\): The shift in equilibrium towards the forward reaction will result in an increased yield of \(NH_{3}\). As more \(H_{2}\) and \(N_{2}\) are added, the reaction will favor the production of \(NH_{3}\) to maintain equilibrium. This will lead to an increase in the concentration of \(NH_{3}\) compared to the initial equilibrium state.

It is important to note that the equilibrium position will ultimately depend on factors such as the concentrations of \(H_{2}\), \(N_{2}\), and \(NH_{3}\), as well as the temperature and pressure of the system. By adding more reactants, the equilibrium will adjust to achieve a new balance, favoring the formation of more \(NH_{3}\).

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Answer:

I put the right structures in the pictures for you

Answer:

In this titration, solution P (that contains hydrochloric acid) is added into the conical flask that contains sodium hydroxide drop by drop. The indicator (phenolphthalein) changes color when all the NaOH is completely neutralized.

i) Solution P contains hydrochloric acid. Hydrochloric acid is the chemical that reacts with sodium hydroxide to give salt and water.

This type of reaction is called neutralization.

ii) Under alkaline conditions, phenolphthalein appears pink in color. When the solution becomes neutral or acidic, it is colorless.

So, the color change of the mixture at the end point is from pink to colorless.

iii) same explanation from question i,

HCl (aq) + NaOH (aq) --> NaCl (aq) + H2O (l)

iv) no. of moles = volume (in dm3) x concentration

hence,

no. of moles of NaOH used = 25/1000 x 0.1

= 0.0025 mol

From the equation in (iii), since the mole ratio of HCl : NaOH = 1:1, meaning 1 mole of HCl reacts completely with 1 mole of NaOH.

This also means that the no. of moles of NaOH reacted equals to the no. of moles of HCl needed to react with it, which is 0.0025 mol.

Given the concentration of HCl in solution P is 0.1 mol /dm3. (pls correct me if I misunderstood your comment),

if v is the volume of HCl needed,

0.0025 = 0.1 v

v = 0.025 dm3

also = 25 cm3

Answer:

In this titration, solution P (that contains hydrochloric acid) is added into the conical flask that contains sodium hydroxide drop by drop. The indicator (phenolphthalein) changes color when all the NaOH is completely neutralized.

i) Solution P contains hydrochloric acid. Hydrochloric acid is the chemical that reacts with sodium hydroxide to give salt and water.

This type of reaction is called neutralization.

ii) Under alkaline conditions, phenolphthalein appears pink in color. When the solution becomes neutral or acidic, it is colorless.

So, the color change of the mixture at the end point is from pink to colorless.

Explanation:

Answer:If you make a Punnett square, then you have all of the offspring having one dominant allele (the brown body color) and one recessive allele (the back body color).

Explanation:it is expert verified

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.

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Yes, it is true that the electronic configuration of O2- is 1s2 2s2 2p6.

Arrangement of electrons in orbitals around atomic nucleus is called electronic configuration and describes how electrons are distributed in its atomic orbitals.

When oxygen atom gains two electrons to form an O2- ion, the two electrons occupy the lowest energy level available, which is the 2s orbital. Therefore, the electronic configuration of O2- is the same as that of neon (1s2 2s2 2p6), which has a full outermost shell of electrons. This noble gas configuration makes the O2- ion stable and less likely to react with other elements.

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Answer:

\(\boxed {\boxed {\sf x \approx 1.34 \ atm}}\)

Explanation:

Since we are dealing with temperature and pressure, we must use Boyle's Law. This states that the pressure is inversely proportional to the volume. The formula is:

\(P_1V_1=P_2V_2\)

Where P is the pressure and V is the volume.

We know the original pressure (P₁)  of the gas is 1.20 atmospheres and the volume (V₁) is 2.45 liters.

\(1.20 \ atm * 2.45 \ L = P_2V_2\)

We also know the gas is contracted to a new volume of 2.20 liters (V₂) , but we do not know the pressure (P₂). We can use x.

\(1.20 \ atm *2.45 \ L = x * 2.20 \ L\)

We can solve the left side of the equation and multiply.

\(2.94 \ atm *L= x*2.20 \ L\)

We are trying to find the new pressure (x), so we must isolate the variable. It is being multiplied by 2.20 liters. The inverse of multiplication is division, so we divide both sides by 2.20 L.

\(\frac {2.94 \ atm *L}{2.20 \ L}=\frac{x*2.20 \ L}{2.20 \ L}\)

\(\frac {2.94 \ atm *L}{2.20 \ L}=x\)

The units of liters cancel.

\(\frac {2.94 \ atm}{2.20 \ }=x\)

\(1.33636363636 \ atm =x\)

The original measurements have 3 significant figures, so our answer should have the same. For the number we found, that is the hundredth place.

The 6 in the thousandth place tells us to leave the 3 in the hundredth place.

\(1.34 \ atm \approx x\)

The new pressure is approximately 1.34 atmospheres.

The molar mass of camphor in the nearest whole number is 152 g/mol.

Given,

P = 12 torr or 0.01579 atm

1 atm = 760 torr

Density = 0.0829 g/l

R = 0.0821 L.atm/mol.K

T = 273° K + 80° K

T = 353° K

As we know,

PV = nRT

Or, PV = mass × R × T / molar mass

Or, P = mass × R × T / volume × molar mass

Where, mass/ volume = density (d)

P = dRT / molar mass

Now putting the values,

0.01579 = 0.0829 × 0.0821 × 353 / molar mass

Or, molar mass = 152.156 g/mol.

Hence, the molar mass of camphor is 152 g/mol.

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Answer:

ore is naturally occuring solid material from which a metal or valuable mineral can be extracted

profitably.

Sulfur and oxygen are the reactants in this process, and sulfur dioxide is the end result. Sulfur + Oxygen = Sulfur Dioxide is the word equation for this process.

Chemical equation writing. Sulfur trioxide is created when sulfur dioxide and oxygen are combined. Sulfur trioxide, often known as SO3, is the result of the reaction between sulfur dioxide and oxygen (SO2+O2).

This reaction is a combination reaction, which is the type of chemical reaction it is. Balanced Approaches: S and O2 combine to generate SO2 in this reaction of combination. Make sure the number of atoms on either side of the equation is equal by carefully counting them up.

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The mathematical expression for h is v²/(2g) which is based on conservation of energy and the correct option is option B.

The law of conservation of energy states that energy can neither be created nor be destroyed. Although, it may be transformed from one form to another.

Example, when a fruit is falling to the bottom, potential energy is getting converted into kinetic energy.

Conservation of energy implies

KEinitial = PEfinal

mv²/2 = mgh

therefore, h = v²/2g.

Thus, the ideal selection is option B.

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