the electrolysis of bio produces pure bismuth. how long would it take to produce 10.0 g of bi by the electrolysis of a bio solution using a current of 25.0 a?

The mass of Mg(OH)2 produced from 36.7 mL of 3M MgCl2 can be calculated using stoichiometry and the balanced chemical equation for the reaction.

The balanced chemical equation for the reaction between MgCl2 and NaOH is MgCl2 + 2NaOH → Mg(OH)2 + 2NaCl. From the equation, we can see that one mole of MgCl2 reacts with two moles of NaOH to produce one mole of Mg(OH)2.

To calculate the mass of Mg(OH)2 produced, we need to use stoichiometry and the given amount of MgCl2 and its concentration. We first convert the volume of MgCl2 to moles by multiplying it with its concentration:

36.7 mL * (3 moles/L) * (1 L/1000 mL) = 0.11 moles MgCl2

Since one mole of MgCl2 produces one mole of Mg(OH)2, the number of moles of Mg(OH)2 produced will also be 0.11 moles.

The molar mass of Mg(OH)2 is 58.33 g/mole, so the mass of Mg(OH)2 produced can be calculated by multiplying the number of moles by its molar mass:

0.11 moles * 58.33 g/mole = 6.42 g Mg(OH)2

Therefore, the mass of Mg(OH)2 produced from 36.7 mL of 3M MgCl2 is 6.42 g.

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The four ionic species initially in solution are Na⁺, PO₄³⁻, Cr³⁺, and Cl⁻. Since the precipitate is composed of Cr³⁺ and PO₄³⁻ ions, the spectator ions must be Na⁺ and Cl⁻.

The complete ionic equation is 3Na⁺(aq) + PO₄³⁻(aq) + Cr₃⁺(aq) + 3Cl⁻(aq) → 3Na⁺(aq) + 3Cl⁻(aq) + CrPO₄(s).

So the balanced net ionic equation for this reaction would be Cr³⁺(aq) + PO₄³⁻(aq) → CrPO₄(s).

Answers:

Which two ions are Spectator Ions?

Na+

Cl-

The net ionic reaction is Cr2+PO42...

Cr2(PO4)3

a switch opens and closes an electric circuit

Both sand and potting soil are mixtures because they both contains more than one type of substances. Both are composed of minerals and different substrates.

Mixtures are substance formed by the combination of two or more components. The mixtures can be homogenous or heterogenous. Homogenous mixtures contains only one phase.

Heterogenous mixtures are of components with different phases. Sand is an example of heterogenous mixture. The major component of sand is silicon dioxide. it also contains grains of other minerals.

Potting soil is a mix of soil and minerals used for plantation. It also known as potting compost since it contains wood products, vermiculates, clay etc. Therefore, potting soil is a mixture.

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Answer:

In the chemical industry.

Isotopes are the atoms of the same element with same atomic no: and different mass numbers. ... ⇒As isotope of uranium is used as a fuel in nuclear reactor. ⇒An isotope of iodine is used in the treatment of goitre. ⇒An isotope of cobalt is used in the treatment of cancer.

The fundamental nature of strategic management requires the awareness & understanding of outside forces & encourages strategic managers to adopt new ideas is known as Adaptation.

Three definitions of adaptability are connected. First, natural selection, a dynamic evolutionary process, adapts organisms to their environments, improving their evolutionary fitness. Second, it is a state that the populace has attained along that process. Thirdly, it is a phenotypic characteristic or adaptive trait that has been preserved and has evolved via natural selection and has a functional purpose in each individual organism.

History has recorded descriptions of adaptation going back to the time of the ancient Greek philosophers Empedocles and Aristotle. Natural theology of the 18th and 19th centuries saw adaptation as proof of the presence of a deity.

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Answer: The answer is 0.5 M AIN

If the student measures the density of the aluminum as 2. 87 g/mL and the actual value is the 2.69 g/mL,  the student's % error is 6.6 %.

The measures density of the aluminum  = 2.87 g/mL

The actual density of the aluminum = 2.69 g/mL

The expression of the percent error is as follows :

% error = (|actual value - measured value | / actual value ) × 100 %

% error = (|2.87 - 2.69 | / 2.69 ) × 100 %

% error = 0.066 × 100 %

% error  = 6.6 %

Thus, the percent error is 6.6 %.

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Answer: the first one is work and the second one is energy

Explanation:

Answer:

first :work second:energy

Explanation:

According to the given information CaCl₂(s) are the particles arranged in a crystal structure.

The correct option is A.

A crystal system is composed of a number of axes. Or, to put it another way, the structure is an arranged grouping of atoms, ions, or molecules. The crystal structure is made up of bonded atoms, atom clusters, or molecules. Due to the constituent particles' innate propensity to arrange themselves in symmetrical patterns, this structure forms.

This inorganic salt is crystallized calcium cations and chlorine anions. Ions are grouped in a systematic way.

Ethane (C₂H₆) is a gas; the symbol for a gas in chemistry or its physical state is g. Gases lack a solid structure.

Methanol (CH₃OH) is a liquid; the symbol for liquids in chemistry is l, and it lacks a structural structure.

Since water dissolves calcium iodide, the resulting aqueous solution (aq) lacks a crystal structure.

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Answer:

La respuesta correcta es la opción A.

Explicación:

La densidad del corcho es 0.95g / cm3 por lo que se hundirá en la solución de acetona porque el corcho es más denso que la solución de acetona mientras que por otro lado, el corcho flotará en otros dos líquidos porque la densidad del corcho es menor que en otros dos líquidos o, en otras palabras, los dos líquidos son más densos que el corcho, por eso el corcho flotará en estos dos líquidos.

Answer:

if ur here for the coffee one its between cola and acid rain

Explanation:

ur mom

In addition to respiration, a process known as guttation involves the loss of liquid water from a plant's healthy leaf or stem, mostly through water stomata.

The physiological loss of water . water of water vapor, mostly from the stomata of leaves, but also by evaporation first from surfaces of leaf tissue, flowers, and stems, is known as transpiration.

Additionally, by providing evaporative cooling, vegetation transpiration makes a major contribution to the energy balance of the leaf. Additionally, transpiration speeds up the movement of nutrients and water from roots to the shoots. Transpiration occurs when water vapor leaves a plant through the stomata.

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The volume of pycnometer is 20.409 ml.

Volume of pycnometer is determined by using the general formula of  density which is,

density=mass/volume

Considering the data given, mass of pycnometer =27.144 g

According to the standards , density of pycnometer at 25°C=1.33g/cm³

Substituting the values in the formula,

volume=mass /density=27.144/1.33=20.409 cm³

Pycnometer is an instrument which is used to measure the relative density of liquids and solids.The density of liquids is determined by using relative density and for solids the density is determined by weighing them.

It is based on Boyle's law which helps in determination of pressure-volume relationship. There are 2 types of this instrument ,one that which works on a basis of gas expansion and the  other one which works on the basis of variable  volume.

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Answer:

Polar Covalent Bonding.

Explanation:

Polar Covalent Bonding. A water molecule is formed when two hydrogen bonds covalently (sharing of electrons) with an oxygen atom. It is polar because there is unequal distribution of the electrons between the oxygen and hydrogen atom.

The Omnipotent view of management refers to the belief that managers are directly responsible for an organization's success or failure. According to this view, managers have the power and control to make decisions that will significantly impact the organization's performance.

In terms of the organizational environment, ABC CO needs to focus on several aspects. Firstly, it should prioritize building strong relationships with customers by understanding their needs and delivering value through its products or services. Secondly, maintaining good relationships with suppliers is crucial to ensure a reliable supply chain and access to necessary resources. Thirdly, keeping a close eye on competitors is essential to stay competitive and identify opportunities for differentiation. Lastly, monitoring and adapting to economic, legal, and socio-cultural factors is vital to ensure compliance with regulations and aligning the organization with societal trends and expectations.

In conclusion, the Omnipotent view of management emphasizes the influence of managers in shaping organizational outcomes, while the Symbolic view recognizes the significance of external factors. For the current state of ABC CO, a balanced approach that considers both internal and external factors would be beneficial. The culture should promote collaboration, innovation, and adaptability, while the organization should focus on building strong relationships with customers, suppliers, and competitors while adapting to the economic, legal, and socio-cultural environment.

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If the nucleotide compared to the shoulder, displacements of the hip joints are larger.

The comparison of the nucleotid to the shoulder can be used to understand the movement of the hip joints as well. As the shoulder extends downward, the hip can originate from a point of flexion before it extends up and outward.

This is a result of the vertical pull of the shoulder being countered by the equal and opposite force of the hip pulling in the opposite direction. The hip is able to take some of the load off the shoulder, allowing for a greater range of motion in the shoulder movement. With the hip helping to counter the shoulder movement, a larger range of motion is achieved.

When it comes to displacing the hip joints, it is important to understand the mechanics of the movement. Movement of the hip joint often begins with a slight posterior rotation of the pelvis which helps bring the femur back into a neutral position before it extends up and outward.

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Answer:8 electrons

Explanation:the second energy level can only have 8 electrons so the next electron in sodium has to be on the next (third) level.

Answer:

the answer is A.

i think:/

Explanation:

Answer:

There are three significant figures

Explanation:

When counting sig figs you don't count the zeros unless it is between a number greater than zero. The two zeros aren't between the greater numbers so there are only 3.

Answer:

1.76 g/mL

Explanation:

You need to find the volume.  You can do this by subtracting the volume of the water and the rock by the volume of the water.

72.7 mL  -  50 mL  =  22.7 mL

Now that you have volume, divide the mass by the volume to find the density.

39.943 g/22.7 mL = 1.76 g/mL

The concentration of H₂SO₄ is 0.123 M if 12.3 mL of 0.200 M NaOH solution is needed to neutralize 10.0 mL of H₂SO₄ solution.

The balanced chemical equation for the reaction between NaOH and H₂SO₄ is as follows:
2 NaOH + H₂SO₄ → Na₂SO₄ + 2 H₂O

From the equation, we can see that 2 moles of NaOH react with 1 mole of H₂SO₄. Using this ratio, we can calculate the number of moles of NaOH used in the reaction:
moles of NaOH = (0.200 M) x (0.0123 L) = 0.00246 mol

Since 2 moles of NaOH react with 1 mole of H₂SO₄, we can calculate the number of moles of H₂SO₄ present in the 10.0 mL of solution:

moles of H₂SO₄ = 0.00246 mol ÷ 2 = 0.00123 mol

Using the volume of the H₂SO₄ solution, we can calculate the concentration of the solution:

concentration of H₂SO₄ = moles of H₂SO₄ ÷ volume of H₂SO₄ solution
= 0.00123 mol ÷ (10.0 mL ÷ 1000 mL/L)
= 0.123 M

Therefore, the concentration of H₂SO₄ is 0.123 M if 12.3 mL of 0.200 M NaOH solution is needed to neutralize 10.0 mL of H₂SO₄ solution.

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The nuclear disintegration series of 238-U is the source of radon-222 in soil.

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If an empty graduated cylinder has a mass of 31.780g. then, 50.0ml of an unknown liquid are added and the mass increases to 72.810g. then the  density of the unknown liquid is 0.8206 g/cc.

We must use the following formula to determine the density of the unidentified liquid:

density equals mass/volume

The mass of the liquid that has been added to the graduated cylinder must first be ascertained. We may achieve this by deducting the mass of the liquid-filled cylinder from the mass of the empty cylinder:

Mass of liquid equals mass of cylinder with liquid minus mass of cylinder with no liquid.

liquid mass = 72.810 g - 31.780 g

liquid mass is 41.030 g.

The volume of the liquid added, which is 50.0 mL, may then be calculated.

We can now enter these values into the density formula as follows:

The formula for density is mass/volume: 41.030 g/50 mL.

Since 1 millilitre (mL) equals 1 cubic centimetre (cc), we can simplify the units by converting to 1 cc:

densities equal 41.030 g per 50.0 cc

We can finally determine the density:

0.8206 g/cc is the density.

As a result, the unknown liquid has a density of 0.8206 g/cc.

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The process of electrolysis is initiated by the application of a voltage across the molten electrolyte. During electrolysis, the I− ions are oxidized to I2, while the Ca2+ ions are reduced to calcium metal.

(i) At anode, negatively charged anions (I− ions) will be attracted and at the cathode, positively charged cations (Ca2+ ions) will be attracted.

(ii) At anode, the I− ions will be oxidized to I2 while at the cathode, Ca2+ ions will be reduced to calcium metal.

(iii) The product formed at the anode will be I2 and the product formed at the cathode will be calcium metal.

(iv) The following is the sketch of the electrolysis cell and its parts;

Anode (-ve electrode) | CaCl2 / MgI2 (molten mixture) | Cathode (+ve electrode)Ionic substance CaCl2 / MgI2 is dissolved in their own fused state and we get a molten mixture.

Here, the two substances dissociate into their respective cations and anions. CaCl2 dissociates into Ca2+ and 2Cl- while MgI2 dissociates into Mg2+ and 2I-.

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Answer:

d = 0.6975 g/cm³

Explanation:

d = m/V       d = density      m = mass      V = volume

1 mL = 1 cubic centimeter

d = 2640 g / 3785 cm³

d = 0.6974900925 g/cm³

four significant digits in problem, so four significant digits in answer

\(\\ \rm\rightarrowtail Density=\dfrac{Mass}{Volume}\)

\(\\ \rm\rightarrowtail Density=\dfrac{2640}{3785}\)

\(\\ \rm\rightarrowtail Density=0.697g/mL\)

Answer:

To determine the amount of a 70% acid solution and a 20% solution needed to produce a 45% solution, we can set up a system of equations based on the principles of concentration and volume.

Let's assume that x mL of the 70% acid solution needs to be mixed with (200 - x) mL of the 20% solution.

The total amount of acid in the resulting mixture can be calculated as follows:

0.70x + 0.20(200 - x) = 0.45(200)

Now, let's solve this equation to find the value of x:

0.70x + 40 - 0.20x = 90

0.70x - 0.20x = 90 - 40

0.50x = 50

x = 50 / 0.50

x = 100

Therefore,

100 mL of the 70% acid solution needs to be mixed with (200 - 100) = 100 mL of the 20% solution to produce 200 mL of a 45% solution

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