a saturated solution of ba(oh)2 has a ba2 concentration of 0.294 m. what is the ph of the solution? (atomic weights: ba = 137.33, o = 16.00, h = 1.008)

When a chemical process reaches equilibrium, the equilibrium constant (often represented by the letter K) sheds light on the interaction between the reactants and products. The value of Kc is 88.96.

The ratio of the concentration of the products to the concentration of the reactants, each raised to their respective stoichiometric coefficients, is the equilibrium constant of concentration (denoted by Kc) of a chemical process at equilibrium.

Here the reaction is:

N₂ + 3Cl₂ → 2NCl₃

Kc = [NCl₃]² / [N₂] [Cl₂]³

Kc = (0.5)² / (0.18) (0.25)³ = 88.96

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Answer:

wrong.

Explanation: charged atoms have have more electrons than neural because  they charge it . a  neural atom has eaqual number of electrons and neutrons.

hope this helps(^人^)

Answer:

jupiter is your answer

Explanation:

you weigh more there

Answer:

Flocculation is the operation in which the coagulated water must be gently mixed at a propeller speed of 15 to 20 rpm to promote the growth of the floc. ... The flocculation basin often has a number of compartments with decreasing mixing speeds as the water advances through the basin.

Answer:

C. Earth's Mantle

Explanation:

Answer:

C

Explanation:

Earth's mantle is the correct answer

Answer:

0.418ml

Explanation:

Density=Mass/Volume

By making Volume the subject of The formula=

Volume=Mass/Density

V=0.360/0.860=0.418ml

When the dry ingredients of a cake are combined, the result is a mixture. Option 3.

In chemistry, mixtures are substances that are obtained by mixing two or more chemically different substances together with each substance maintaining its chemical identity. In other words, the components of a mixture are still chemically unique and can be separated by physical means.

Mixtures can be homogeneous or heterogeneous. Homogenous mixtures are mixtures in which the components are uniformly dispersed throughout the entire mixture. For heterogeneous mixtures, the components are not uniform throughout the mixture.

Thus, when the dry ingredients of a cake, such as flour, sugar, etc., are combined, what we are going to have is a mixture. Whether this mixture would be homogenous or heterogeneous will depend on the level of mixing. Whatever the case may be, the components can still be separated by physical means.

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Answer:

28.16 g/mol

Explanation:

From Graham's law;

Let the rate of diffusion of gas X be 1.25

Let the rate of diffusion of CO2 be 1

Molecular mass of gas X= M

Molecular mass of CO2 = 44g/mol

1.25/1=√44/M

(1.25/1)^2 = 44/M

1.5625 = 44/M

M= 44/1.5625

M= 28.16 g/mol

\(CH_3CH_2OH\) is a polar compound and has hydrogen bonding. It has a higher boiling point. It will have the lowest vapor pressure among the three compounds.

Vapor pressure is the pressure produced by the vapors of a liquid in a sealed container when the liquid is heated. It is a property of a liquid that describes the tendency of a liquid to evaporate. It is measured in units of pressure, typically in mmHg or torr. The higher the vapor pressure, the more volatile a compound is. So, the decreasing order of vapor pressure for the given compounds is: \(CH_3CH_3 > CH_3CH_2F > CH_3CH_2OH\)

Here, \(CH_3CH_3\) is a non-polar compound while \(CH_3CH_2F\) and \(CH_3CH_2OH\) are polar compounds. The polar compound has hydrogen bonding, which increases the intermolecular forces between molecules. As a result, the polar compound will have a lower vapor pressure than the non-polar compound.

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Answer

Chemical formula or Chemical Abstracts Service

Explanation:

A CAS (Chemical Abstracts Service) Registry Number is a unique identifier that tells you, for example, that acetone and dimethyl ketone are actually the same substance.

Answer:3 oxygen atoms.

Explanation: Each formula unit of Fe2O3 contains 2 atoms of iron and 3 atoms of oxygen (technically they are ions, but that doesn't matter).

Answer:

0.4 M

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

HBr + KOH —> KBr + H₂O

From the balanced equation above,

The mole ratio of the acid, HBr (nₐ) = 1

The mole ratio of the base, KOH (n₆) = 1

Finally, we shall determine the molarity of HBr. This can be obtained as follow:

Volume of acid, HBr (Vₐ) = 0.5 L

Volume of base, KOH (V₆) = 0.1 L

Molarity of base, KOH (M₆) = 2 M

Molarity of acid, HBr (Mₐ) =?

MₐVₐ / M₆V₆ = nₐ/n₆

Mₐ × 0.5 / 2 × 0.1 = 1

Mₐ × 0.5 / 0.2 = 1

Cross multiply

Mₐ × 0.5 = 0.2

Divide both side by 0.5

Mₐ = 0.2 / 0.5

Mₐ = 0.4 M

Thus, the molarity of the HBr solution is 0.4 M

Answer:

Explanation:

Any substance that contains only one kind of an atom is known as an element. Because atoms cannot be created or destroyed in a chemical reaction, elements such as phosphorus (P4) or sulfur (S8) cannot be broken down into simpler substances by these reactions.

Example: Water decomposes into a mixture of hydrogen and oxygen when an electric current is passed through the liquid. Hydrogen and oxygen, on the other hand, cannot be decomposed into simpler substances. They are therefore the elementary, or simplest, chemical substances - elements.

Each element is represented by a unique symbol. The notation for each element can be found on the periodic table of elements.

The elements can be divided into three categories that have characteristic properties: metals, nonmetals, and semimetals. Most elements are metals, which are found on the left and toward the bottom of the periodic table. A handful of nonmetals are clustered in the upper right corner of the periodic table. The semimetals can be found along the dividing line between the metals and the nonmetals.

Answer:

give him brainlyest my gye

Explanation:

Answer:39+30

Explanation:

Answer:

32.25

Explanation:

8NH3 + 3Cl2 → 6NH4Cl + N2

NH3 = 17 g/mol

number of moles = 1

NH4Cl= 43 g/mol

number of moles = 3/4

mass= 43 × ¾ ≈ 32.25 g

Answer:

40.1

Explanation:

its correct your welcome

The cause of potassium ions leaving the axon just after the peak of the action potential is due to the opening of voltage-gated potassium channels. These channels open in response to the depolarization that occurs during the action potential.

And also during an action potential, depolarization causes voltage-gated sodium channels to open, allowing sodium ions to flow into the axon. This influx of positive ions causes the membrane potential to rapidly rise and eventually reach a peak. At this point, voltage-gated potassium channels begin to open, allowing potassium ions to flow out of the axon. This outflow of positive ions causes the membrane potential to rapidly repolarize and eventually reach a hyperpolarized state. This rapid efflux of potassium ions is what causes them to leave the axon just after the peak of the action potential.

When the membrane potential reaches its peak, the voltage-gated potassium channels open, allowing potassium ions to flow out of the axon, leading to repolarization and the eventual return of the membrane potential to its resting state.

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Answer:

. Name a soluble compound that could be added to precipitate all of the iron ions from the solution.

Sodium Hydroxide.

The mass of (NH4) 2S in the solution is : Mass = 0.0600 mol × 60.08 g/mol = 3.60 g.

The given molarity and volume of the solution can be used to calculate the number of moles of ammonium sulfide (NH4)2S.Then, the number of moles can be converted to mass using the molar mass of (NH4)2S.Mass of ammonium sulfide (NH4)2S in 3.00 L of a 0.0200 M solution is given by : Mass = moles × molar mass.The number of moles of (NH4)2S can be found using the equation:Molarity = Number of moles / Volume.Rearranging this equation, we get:Number of moles = Molarity × Volume Number of moles of (NH4)2S = 0.0200 M × 3.00 L.Number of moles of (NH4)2S = 0.0600 mol.The molar mass of (NH4)2S can be calculated by summing the molar masses of ammonium (NH4) and sulfide (S) ions.Molar mass of (NH4)2S = (2 × Molar mass of NH4) + Molar mass of S= (2 × 14.01 g/mol) + 32.06 g/mol= 60.08 g/mol.

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Let's contrast the numbers given with how much solute would be present in a saturated solution at the specified temperature:

Thus, the equilibrium is represented by 20 g of KClO3 at 80 °C in 100 g of water.

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When a strong acid reacts with a strong base the products are typically an ionic compound, which is called a salt and the neutral molecule water

An acid that ionizes completely in solution

It gives off the greatest number of hydrogen ion or proton when placed in a solution

The acid that do not completely dissociate in solution

A base that completely dissociate into the aqueous solution

The compound ionize in water to yield one or more hydroxide ion.

Contains ion that are held together by the attractive force among the oppositely charged ion.

Hence, when a strong acid reacts with a strong base, the product are typically an ionic compound which is called a salt and the neutral molecule water.

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When a chemical reaction reaches equilibrium, the concentration graph will typically show no further changes

This question is incomplete but it appears you want to know something about the concentration graph of a reaction at equilibrium.

When a chemical reaction reaches equilibrium, the concentration graph will typically show no further changes in the concentrations of the reactants and products over time. This means that the graph will become relatively flat and stable after a certain point, indicating that the reaction has reached a state of dynamic balance where the rate of the forward reaction is equal to the rate of the reverse reaction.

At equilibrium, the concentrations of the reactants and products are constant, but they may not necessarily be equal. The specific concentrations of each species at equilibrium depend on the particular reaction and the conditions under which it is carried out (such as temperature, pressure, and concentration of reactants and products).

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Answer:

there are more products than reactants

Explanation:

acellus confirmed

Answer:

The answer is sophisticated earthquake early-warning systems, increasingly accurate storm forecasting, and innovative flood risk and flood mitigation projects provide communities with the tools they need to respond to impending hazard events, and infrastructure design and engineering improvements help to reduce the damage suffered

Explanation:

I hope this helps

The Density of a substance is simply defined as the mass of the subtance per unit volume of the substance i.e

Density = mass /volume

To solve the question given above, we'll begin by calculating the volume of the zinc. This can be obtained as follow:

Density of Zinc = 7.10 g/cm³

Mass of Zinc = 46.77 g

Density = mass /volume

7.10 = 46.77 / Volume

Cross multiply

7.10 × Volume = 46.77

Divide both side by 7.10

Volume = 46.77 / 7.10

Finally, we shall determine the new volume of the water. This can be obtained as follow:

Volume of Zinc = 6.59 cm³ = 6.59 mL

Volume of water = 33.33 mL  

New volume of water = (Volume of Zinc) + (Volume of water)

New volume of water = 6.59 + 33.33

Therefore, the new volume of water is 39.92 mL

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The system is not at equilibrium.

The reaction will proceed to the right to attain the equilibrium.

Let's consider the following reaction.

2 NOBr(g) ⇌ 2 NO(g) + Br₂(g)

The pressure equilibrium constant (Kp) is 60.6. To determine if the system is at equilibrium when the pressure of each component is 1.75 atm, we have to calculate the reaction quotient (Q) and compare it with Kp.

Q = [NO]².[Br₂] / [NOBr]²

Q = (1.75)².(1.75) / (1.75)²

Q = 1.75

Since Q ≠ Kp, the system is not at equilibrium.

Since Q < Kp, the reaction will proceed to the right to attain the equilibrium.

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I'm guessing it's true based on what I found

Answer:

Explanation:

alcohols have a much lower freezing point due to OH(alcohol) functional group, much more energy is requiered to overcome the attraction of the OH

The largest reservoir of nitrogen on earth is represented by the atmosphere in the illustration. Nitrogen is a gas that makes up approximately 78% of the earth's atmosphere. It is a major component of the atmosphere and therefore, the largest reservoir of nitrogen is located in the atmosphere.

Other reservoirs of nitrogen include soil, oceans, and living organisms. However, the amount of nitrogen in these reservoirs is much smaller than the amount in the atmosphere. Nitrogen is found in various reservoirs on Earth, including the atmosphere, soil, plants, and water bodies. However, the atmosphere contains approximately 78% of nitrogen gas (N2), making it the largest reservoir of nitrogen on Earth.

Nitrogen is essential for life, as it is a key component of amino acids and nucleic acids, which are the building blocks of proteins and DNA, respectively. Step by step explanation, 1. Identify the various reservoirs of nitrogen atmosphere, soil, plants, and water bodies. 2. Determine the percentage of nitrogen present in each reservoir. 3. Compare the percentages and conclude that the atmosphere, with approximately 78% nitrogen gas (N2), is the largest reservoir of nitrogen on Earth.

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Answer:

6.31x10^-10

Explanation:

Answer: 6.31 x 10^-10

Explanation:

Answer:

12 grams

Explanation:

Electrons do not contribute to mass. The proper unit to use is G

Answer: 0.024 ml of hydrogen gas are collected at \(18.5^0C\) and 755.5mmHg in this single replacement reaction

Explanation:

To calculate the moles :

\(\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}\)    

\(\text{Moles of} Ba=\frac{85.0g}{137g/mol}=0.620moles\)

To calculate the number of moles for given molarity, we use the equation:

\(\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution in ml}}\)  

\(3.55M=\frac{\text{Moles of} HCl\times 1000}{275ml}\\\\\text{Moles of }HCl=\frac{3.55\times 275}{1000}=0.976mol\)

The balanced chemical reaction is:

\(Ba+2HCl\rightarrow BaCl_2+H_2\)

According to stoichiometry :

2 moles of \(HCl\) require = 1 mole of \(Ba\)

Thus 0.976 moles of \(HCl\) will require=\(\frac{1}{2}\times 0.976=0.488moles\) of \(Ba\)

Thus \(HCl\) is the limiting reagent as it limits the formation of product and \(Ba\) is the excess reagent.

As 2 moles of \(HCl\) give = 2 moles of \(H_2\)

Thus 0.976 moles of \(HCl\) give =\(\frac{2}{2}\times 0.976=0.976moles\)  of \(H_2\)

According to ideal gas equation:

\(PV=nRT\)

P = pressure of gas = 755.5 mmHg = 0.994 atm   (760 mm Hg = 1 atm )

V = Volume of gas in L = ?

n = number of moles = 0.976

R = gas constant =\(0.0821Latm/Kmol\)

T =temperature =\(18.5^0C=(18.5+273)K=291.5K\)

\(V=\frac{nRT}{P}\)

\(V=\frac{0.994atm\times 0.0820 L atm/K mol\times 291.5K}{0.994atm}=24.0L=0.024ml\)    (1L=1000ml)

Thus 0.024 ml of hydrogen gas are collected at \(18.5^0C\) and 755.5mmHg in this single replacement reaction