The molar solubility of C a ( O H ) 2 was experimentally determined to be 0. 020 M. Based on this value, what is the K s p of C a ( O H ) 2 ?

The one  that describes the physical appearance of the compound when the end of its melting point range is reached is the correct option is B. The compound completely converts to a liquid.

The melting point is the temperature at which the solid and the liquid will forms of the pure substance that can exist in equilibrium. The  heat is applied to the solid, and its temperature will be increase as the melting point will be reached. The more heat then will be convert to the solid into the liquid with the no temperature change.

Thus, the compound will be completely converts to the liquid as the end of its melting point range.

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39.20 g of water are theoretically yield produced when 25.34 g of C4H10 are burned.

The highest amount of a product that can be made from a specific quantity of reactants is known as the theoretical yield. Stoichiometry, which involves balancing a chemical equation and calculating the amount of product created using mole ratios, is used to determine it.

Let's start by balancing the provided equation.

C4H10 + 13/2 O2 4 CO2 + 5 H2O.

It is evident that five moles of water react with one mole of C4H10.

Therefore, we can determine the theoretical yield of water using the mole ratio of C4H10 and H2O.

Determine how many moles of C4H10 there are: C4H10 mass and molar mass are used to calculate moles of C4H10.moles of C4H10 are equal to 25.34 g/mol and 58.12 g/mol, respectively.

The mole ratio of C4H10 and H2O is as follows:5 moles of C4H10 equal 1 mole of H2O.moles of water equal 5 0.436 mol2.18 mol = 1 mole of water

Finally, we may use the mole-mass connection to get the mass of water.H2O's molar mass is equal to its molecular mass.mass of H2O = 39.20 g mass of H2O = 2.18 mol 18.02 g/mol

Therefore, 39.20 g of water should theoretically yield be produced when 25.34 g of C4H10 are consumed.

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Answer:

c or b

Explanation:

it is not d because my cats sleep all night

it is not a because i like cats but my friend loves dogs

Answer:

Answer is C

Explanation:

are cats more active at night than the day?

Solids, liquids, and gases differ in terms of packaging of the atoms in its constituent atomic level.

Solids, liquids, and gases are the three main states of matter. They differ in the way their atoms or molecules are arranged and how they interact with one another. Solids have a definite shape and a definite volume. The atoms or molecules in a solid are tightly packed together and are not free to move around. Solids also have a low compressibility and a high density. Liquids have a definite volume but no definite shape. They take the shape of their container. The atoms or molecules in a liquid are close together but are free to move around. Liquids have a low compressibility and a lower density than solids. Gases have no definite shape or volume. They expand to fill their container. The atoms or molecules in a gas are widely spaced and are free to move around. Gases have a high compressibility and a low density. Examples of gases include air, oxygen, and natural gas. In summary, Solids have a fixed shape and volume, liquids take the shape of their container, have a definite volume and gases have no fixed shape or volume and expand to fill their container.

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Answer:

Plants use carbon dioxide to make their food

Explanation:

The most important role of carbon dioxide in the ecosystem is that plants use the compound to make food.

Since plants are primary produces, the food is taken by other organisms in the ecosystem for their own nourishment.

Answer:

10.3

Explanation: i have this as a assignment rn sooo here you go :)

Answer:

1, 4, 6

salt water doesnt count because elements are made up of only one thing, water is made of hydrogen and oxygen so it immediately cancels that option

Answer:

Explanations:

Given the following electronegativity of three elements as:

Radon-222 undergoes a series of three alpha (α) emissions and two beta (β) emissions during its radioactive decay process.

Radon-222, also known as Rn-222 or simply radon, is a radioactive isotope. It decays through a series of radioactive decay steps involving the emission of particles. In the case of radon-222, it undergoes three alpha (α) emissions and two beta (β) emissions.

An alpha emission involves the release of an alpha particle, which consists of two protons and two neutrons (equivalent to a helium nucleus). During each alpha emission, the radon-222 nucleus loses two protons and two neutrons, resulting in the formation of a new nucleus.

A beta emission, on the other hand, involves the release of a beta particle. There are two types of beta particles: beta-minus (β-) and beta-plus (β+). In the case of radon-222, it undergoes two beta emissions, which can either be beta-minus or beta-plus particles.

Overall, the series of three alpha emissions and two beta emissions lead to the transformation of the radon-222 nucleus into a different element through a process known as radioactive decay.

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Double-acting baking powders are part base and part acid. Option C is correct answer.

They contain both a fast-acting acid and a slow-acting acid, which react with the baking soda in the mixture to produce carbon dioxide gas. The double-acting process means that the first reaction occurs when the baking powder is mixed with the wet ingredients, and the second reaction occurs when the batter is exposed to heat in the oven.

This results in a more consistent rise in baked goods and can be used in a wide variety of recipes, regardless of temperature. They do not form rust when combined with vinegar, nor do they necessarily have two acids. Option c is correct answer.

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Answer:

[PCl₃] = 0.031M

[Cl₂] = 0.031M

[PCl₅] = 0.969M

Explanation:

Based on the reaction:

PCl₅(g) ⇄ PCl₃(g) + Cl₂(g)

Keq is defined as:

Keq = 1.0x10⁻³ = [PCl₃] [Cl₂] / [PCl₅]

Where [] are equilibrium concentrations of each species

Inital [PCl₅] = 2.0mol / 2.0L = 1M.

In equilibrium:

[PCl₃] = X

[Cl₂] = X

[PCl₅] = 1M-X

Where X is reaction coordinate

Solving for X in Keq:

1.0x10⁻³ = [X] [X] / [1-X]

1.0x10⁻³ - 1.0x10⁻³X = X²

1.0x10⁻³ - 1.0x10⁻³X - X² = 0

X:

X = -0.032M. False solution, there is no negative concentration

X = 0.031M

That means equlibrium concentrations are:

[PCl₃] = 0.031M

[Cl₂] = 0.031M

[PCl₅] = 1-0.031M = 0.969M

The element F is fluorine, with atomic number 9. Its condensed electron configuration, using noble-gas shorthand notation, is [He] 2s2 2p5.

The atomic number of the chemical element fluorine (F) is 9. The noble gas in its condensed electronic configuration is abbreviated as [He] 2s2 2p5. This indicates that the same 2s and 2p orbitals as those of the rare gas helium are occupied by electrons in the two inner electron shells. The

2s orbital has 2 electrons, the 2p orbital has 5 electrons, and the last 7 electrons are all in the top shell. In the periodic table of elements, fluorine belongs to the halogen group and is a highly reactive nonmetal.

It can be used in a wide range of industrial processes, medical procedures and as a chemical substance.

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Answer:

47.36mL

Explanation:

Using Boyles law equation, which states that:

P1V1 = P2V2

Where;

V1 = initial volume (mL)

V2 = final volume (mL)

P1 = initial pressure (atm)

P2 = final pressure (atm)

Based on the provided information, V1 = 25.3mL, P1 = 152 kPa, V2 = ?, P2 = 0.804atm

First, we need to convert 152kPa to atm by dividing by 101

1kPa = 0.0099atm

152kPa = 1.505atm

P1V1 = P2V2

1.505 × 25.3 = 0.804 × V2

38.08 = 0.804V2

V2 = 38.08/0.804

V2 = 47.36mL

Theoretical yield of NH3 is approximately 12.01 grams when given masses of H2 and N2. The percent yield of the reaction is approximately 19.5% based on an actual yield of 2.34 grams.

Part 1: Theoretical Yield

Given:

Mass of H2 = 1.56 g

Mass of N2 = 9.90 g

Mass of NH3 = 2.34 g

Calculate the moles of H2:

Moles of H2 = Mass of H2 / Molar mass of H2

Molar mass of H2 = 2.016 g/mol (approximately)

Moles of H2 = 1.56 g / 2.016 g/mol ≈ 0.774 mol

Calculate the moles of N2:

Moles of N2 = Mass of N2 / Molar mass of N2

Molar mass of N2 = 28.014 g/mol (approximately)

Moles of N2 = 9.90 g / 28.014 g/mol ≈ 0.353 mol

Determine the limiting reactant:

To find the limiting reactant, we compare the mole ratios of H2 and N2 in the balanced equation.

The ratio of moles of N2 to moles of H2 is approximately 0.353 mol / 0.774 mol ≈ 0.456.

Since the mole ratio is less than 1, N2 is the limiting reactant.

Calculate the moles of NH3 produced:

From the balanced equation, we know that 1 mole of N2 produces 2 moles of NH3.

Moles of NH3 = Moles of N2 × (2 moles of NH3 / 1 mole of N2)

Moles of NH3 = 0.353 mol × 2 ≈ 0.706 mol

Calculate the theoretical yield of NH3:

Theoretical yield of NH3 = Moles of NH3 × Molar mass of NH3

Molar mass of NH3 = 17.031 g/mol (approximately)

Theoretical yield of NH3 = 0.706 mol × 17.031 g/mol ≈ 12.01 g

Therefore, the theoretical yield of NH3 under the given conditions is approximately 12.01 grams.

Part 2: Percent Yield

Given:

Actual yield = 2.34 g (given in the question)

Calculate the percent yield:

Percent Yield = (Actual Yield / Theoretical Yield) × 100

Percent Yield = (2.34 g / 12.01 g) × 100 ≈ 19.5%

Therefore, the percent yield of the reaction under the given conditions is approximately 19.5%.

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Nitrate having a greater bond angle because double bonds take up more space than to the single bonds.

The  O-N-O bond angles greater in the nitrite ion (NC₂⁻) or the nitrate ion (NO₃⁻) having a greater bond angle because double bonds take more space than to the single bonds.

Incase of NO₃ : Nitrogen having five valence electrons and oxygen having two valency whereas O- having one valency. N=O having 1bp and in N-O also having 1bp.

In nitrate, there is a single center atom that is encircled by the three oxygen atoms that have identical bonds to one another and are positioned at the triangle's angles in the same one-dimensional plane. In essence, nitrate contains no lone pairs and three electron domains. As a result, the  NO₃⁻ molecule's are trigonal planar and slightly bent chemical shape. Bond angle is 120 degrees.

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The electrode connected to the positive terminal of the power source (anode) will attract the sodium ions when the switch is closed, as sodium ions are positively charged and are attracted to the negative electrode.

When the switch is closed, the electrode connected to the positive terminal of the power source (anode) will attract the sodium ions. This is because during electrolysis, positive ions, such as sodium ions (Na+), are attracted to the negative electrode (cathode) due to their opposite charges. The positive terminal of the power source provides an excess of electrons at the cathode, creating a negatively charged environment. As a result, the positively charged sodium ions are drawn towards the cathode and are deposited or reduced there. This process allows for the separation and collection of sodium ions during electrolysis.

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Answer:

1 mole is equal to 1 moles Tungsten, or 183.84 grams. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between moles Tungsten and gram.

Explanation:

Answer:

To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = - log [H3O+].

Example: Find the pH of a 0.0025 M HCl solution.

The standard enthalpy change for the reaction A + B ⟶ 2C at 298 K is 670.218 kJ/mol.

For the standard enthalpy change (ΔH°) for the reaction A + B ⟶ 2C, we can use Hess's law, which states that the overall enthalpy change for a reaction is independent of the pathway taken. We can break down the given reaction into two steps:

A + B ⟶ 2D ΔH1 = 670.4 kJ/mol

2D ⟶ 2C ΔH2 = -δ° = -182.0 J/K/mol = -0.182 kJ/K/mol

The enthalpy change for the desired reaction is equal to sum of the enthalpy changes of these two steps:

A + B ⟶ 2C ΔH° = ΔH1 + ΔH2/1000 = 670.4 + (-0.182) = 670.218 kJ/mol

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Answer:

Generally speaking, rocks in the southwestern U.S.A tend to be much older and more eroded than those found in the northeast. The rock outcrops and exposures in this region will likely consist of sedimentary layers that have been exposed due to erosion over time, as well as some ancient igneous intrusions such as granite or basalt. In comparison, the northeastern U.S.A tends to contain younger rocks with fewer signs of weathering and erosion; these outcrops and exposures may include a variety of metamorphic rocks such as slate or gneiss along with granites from nearby mountain ranges like the Appalachians or Adirondacks.

Answer:

Explanation:

If a substance contains ionic bonds, then it’s properties would include high melting and boiling points, a crystalline structure, the ability to dissolve quite easily in water, the ability to conduct electricity, have good insulation and lastly be quite hard and brittle.

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Answer:

they pull or push on objects without touching them

Explanation:

Answer:

If a metal is less reactive than carbon, it can be extracted from its oxide by heating with carbon. The carbon displaces the metal from the compound, and removes the oxygen from the oxide. This leaves the metal.

Explanation:

Answer:

384399861 meters

Explanation:

Answer:

0.01471 seconds

Explanation:

the period of a wave is given by 1/frequency.

Gravity acts towards the center of the earth. Gravity can not be stopped

While other fundamental forces, such as electromagnetic force, can be either attractive or repulsive depending on the charges involved, gravity is always attractive. This means that any two objects in the universe with mass will be attracted to each other.

Every object in the universe with mass is affected by the force of gravity. This makes it a universal force that plays a key role in the behavior of the cosmos.

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Answer:Mineral is a natural material.

Explanation:Mineral is a solid natural inorganic substance.

This problem is asking for the ketone that will be formed when an specific alcohol is oxidized with chromic acid. Although there is no attached file or molecule, you should select the secondary alcohol.

In organic chemistry, oxidation reactions such as those producing aldehydes and carboxylic acids from primary alcohols and those producing ketones from secondary alcohols are based on either the increase of oxygen atoms or the decrease of hydrogen atoms in the molecule.

However, primary carbons are those having one bond with another carbon atom, and they lead to the formation of aldehydes and carboxylic acids as shown below:

\(R-CH_2-OH\rightarrow R-HC=O\rightarrow R-C(=O)-OH\)

On the other hand, secondary alcohols are those having the OH at a carbon with two bonds with two different carbon atoms and lead to formation of ketones upon the oxidation with chromic acid:

\(R_1-CH(OH)-R_2\rightarrow R_1-C(=O)-R_2\)

In such a way, you must select the secondary alcohol for your answer, regardless not included in the question you shared.

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