what mass of baso4 can be formed from 196.0 grams of h2so4? give 3 decimal places.​

After careful consideration your answer is...

Leucippus and Democritus

*Hope I helped*

~Alanna~

Answer:

The first theories of matter were put forward by Empedocles in 450 BC, he proposed that all matter was composed of four elements - Earth, air, fire and water. Later, Leucippus and Democritus suggested matter was made up of tiny indestructible particles continuously moving in empty space.

Explanation:

Answer:

neutrons = 71

protons = 6

electrons = 6

Explanation:

Hope this works :)

The first half-reaction is the oxidation of Cr2O7^2– to Cr^3+ and the second half-reaction is the reduction of I^– to IO3^–. When combined, the overall reaction is Cr2O7^2– + I^– → Cr^3+ + IO3^–.

The electrolytic cell consists of two electrodes, one anode and one cathode, both of which are immersed in an electrolyte solution. At the anode, the Cr2O7^2– ions are oxidized to Cr^3+ ions, releasing electrons into the external circuit.

At the cathode, the I^– ions are reduced to IO3^– ions, and the electrons from the external circuit are used to drive the reaction. The electrolyte solution must contain both Cr2O7^2– and I^– ions in order to facilitate the transfer of electrons between the electrodes.

The overall reaction is driven by the potential difference between the anode and the cathode, which is created by the flow of electrons through the external circuit.

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the final dilution is 1:200. A 1:10 dilution of serum means that 1 part serum is mixed with 9 parts diluent (usually water or saline).

To make this dilution, we can take 1 mL of serum and mix it with 9 mL of diluent.

To redilute 1:10, we take 1 mL of the 1:10 diluted serum and mix it with 9 mL of diluent. This results in a 1:100 dilution, since we have diluted the serum by a factor of 10 again (1:10 x 1:10 = 1:100).

To redilute 1:2, we take 1 mL of the 1:100 diluted serum and mix it with 1 mL of diluent. This results in a 1:200 dilution, since we have diluted the serum by a factor of 2.

To calculate the final dilution, we need to multiply the dilution factors together:

1:10 x 1:10 x 1:2 = 1:(10 x 10 x 2) = 1:200

Therefore, the final dilution is 1:200.

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Answer:

The speed of the wave is

v  = ( 240 )  ( 3.0 )= 720.0 m/s

Explanation:

If  n is the frequency of the wave  λ  is the wavelength of the wave.  v is the speed of the wave,

the three quantities are related by  v = n  λ    

We have, n = 240 Hz λ = 3.0 m v =?

I Hope This Makes Sense

Answer:

Substance B, boiling point of 105 °C

Explanation:

Non volatile substances have high boiling points

15.6 grams of water are formed when 500.0 kJ of energy is released in the synthesis of water from its elements.

The balanced chemical equation for the synthesis of water from its elements is:

O2(g) + 2H2(g) → 2H₂O(l) + 572 kJ

The given energy change is -500.0 kJ, which means that energy is released during the reaction.

We can use the relationship between the amount of energy released and the amount of substance involved in the reaction to calculate the mass of water formed.

The molar enthalpy change for the reaction can be calculated as follows:

ΔH = -500.0 kJ/mol H2O

The molar enthalpy change tells us how much energy is released when 1 mole of water is formed.

The molar mass of water (H2O) is 18.015 g/mol.

To calculate the mass of water formed, we can use the following equation:

mass of water = (ΔH / molar enthalpy change) x molar mass of water

mass of water = (-500.0 kJ / mol H2O / -572 kJ/mol) x 18.015 g/mol

mass of water = 15.6 g

Therefore, 15.6 grams of water are formed when 500.0 kJ of energy is released in the synthesis of water from its elements.

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Answer:

24.5 cm

Explanation:

It would be really complicated to type out, so I've attached an image of how I solved this:

*I separated the paperclip into different sections, figured out the length of those sections, and added them together.

(sorry that my work isn't the neatest)

Answer: Model B. I have included a graph for this question. Model D is incorrect because that is a model for plasma as liquid doesn't contain ionized particles. Model C is incorrect as that represents a solid. Model A is incorrect because that is showing a gas; the particles are moving very freely

According to the forces of attraction, model B  communicates the kinetic energy and particle arrangement of a liquid.

Forces of attraction is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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Your question is incomplete  but most probably your full question was, The models show the phases of a substance at various temperatures. Which model BEST communicates the kinetic energy and particle arrangement of a liquid? A. Model D, because it has high kinetic energy so the particles in the model have ionized B. Model B, because it has some kinetic energy and the particles have a free flowing shape C. Model C, because it has high kinetic energy so the particles in the model have no definite shape D. Model A, because it has some kinetic energy and the particles move freely

Answer:

it had wings that flapped similat to birds wings

Answer:

true or false :-

a) yes

b) no

c)yes

d)yes

e)no

For similar analysis times, open tubular columns provide better resolution than packed columns, Packed columns have a greater sample capacity than open tubular columns and Open tubular columns give better resolution but longer analysis separation times compared to packed columns are true regarding open tubular. Hence, options A, C and D are correct.

The chemical constituents of a sample mixture are identified, separated, and quantified using an analytical technique called gas chromatography.

Gas chromatography is a technique for separating compounds in mixtures by injecting a gaseous or liquid sample into a mobile phase, which is usually referred to as the carrier gas, and passing the gas through a stationary phase. The mobile phase is often composed of an inert gas or an unreactive gas, such as helium, argon, nitrogen, or hydrogen.

Thus, options A, C and D are correct.

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The equation for the equilibrium constant (K) of the reaction studied in this exercise can be written as follows: K = ([\(CI_20\), 2-] * [\(H_20\)(1)]) / ([\(C0_4^ 2\)-] * [Ht])

In this equation, the concentrations of the species involved in the reaction are represented by the square brackets [ ]. The subscripts indicate the stoichiometric coefficients of each species in the balanced chemical equation.

The reaction being studied involves the following species:

\(C0_4^ 2\)- (ag) + 2Ht (ag) = \(CI_20\), 2- (ag) + \(H_20\)(1)

In the equilibrium constant expression, the concentration of \(CI_20\), 2- is multiplied by the concentration of \(H_20\)(1) and divided by the product of the concentrations of \(C0_4^ 2\)- and Ht. The stoichiometric coefficients in the balanced equation are used as exponents for the concentrations of the respective species.

It is important to note that the concentrations used in the equilibrium constant expression should be in molar units (mol/L) or expressed as partial pressures for gases.

Additionally, the equilibrium constant is specific to a given temperature, and its value provides information about the relative amounts of reactants and products at equilibrium.

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To prepare a 0.12 M solution of FeCl₃, the amount of solid FeCl₃ to be dissolved in a given volume of solvent will be 9.72 grams.

Given,

Molarity of FeCl₃ (M)= 0.12 M

The molecular weight (m) of FeCl₃ is  = 162 gm

The volume of the solution (V) to be prepared is =500 ml

The amount of FeCl₃ to be dissolved to make a 0.12 M solution is= x

So,

MV= x ÷ m × 1000

0.12× 500 = x ÷ 162 × 1000

x = 60 × 162 ÷ 1000

x= 9.72 gm

So 9.72 grams of FeCl₃ is dissolved to make 500 ml of 0.12 M solution.

For preparing 0.4 M HCl from 4M HCL:

If we need to make 500 ml of solution with 0.4M of HCL, then we use the formula:

M₁V₁= M₂V₂

0.4 × 500= 4 × x

x= 50 ml

So 50 ml of 4M HCL is taken to make 0.4 M HCL.

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Answer:

Combustion of propanone I believe

Explanation:

The question is incomplete, the complete question is;

Why was it necessary to make sure that some solid was present in the main solution before taking the samples to measure Ksp? Select the option that best explains why. Choose... A. To make sure no more sodium borate would dissolve in solution. B. To ensure the dissolution process was at equilibrium. C. To make sure the solution was saturated with sodium and borate ions. D. All of the above

Answer:

B. To ensure the dissolution process was at equilibrium.

Explanation:

The solubility product is a term used in chemistry to describe the equilibrium between the dissolved, dissociated and undissolved solute of a relatively low solubility ionic solid.

For an ionic solid MX, the solubility product is given as ;

MX(s) ----> M^n+(aq) + X^n-(aq)

If Ksp indeed scribes an equilibrium process for dissolution, it then implies that some undissolved solute must be present before samples are taken to measure the Ksp of a sample. This ensures equilibrium between dissolved and undissolved solute.

B. To provide the dissolution process was at equilibrium and assure equilibrium between dissolved and then undissolved solute.

The solubility product is a representation accustomed in chemistry to describe the equilibrium between the dissolved, dissociated, and as they are undissolved solutes of a relatively low solubility ionic solid.

For an ionic solid MX, the solubility product is given as;

Then, MX(s) ----> M^n+(aq) + X^n-(aq)

If Ksp scribes an equilibrium process for dissolution, it then means that some undissolved solute must be attending before samples are taken to measure the Ksp of a sample.

This confirms equilibrium between dissolved and also undissolved solute between dissolved and undissolved solute.

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The question is incomplete, the complete question is;

Why was it necessary to make sure that some solid was present in the main solution before taking the samples to measure Ksp? Select the option that best explains why. Choose... A. To make sure no more sodium borate would dissolve in solution. B. To ensure the dissolution process was at equilibrium. C. To make sure the solution was saturated with sodium and borate ions. D. All of the above

The following statements about subatomic particles are correct:

B. The charge on a proton is equal in magnitude and opposite in sign to that of an electron

C. The mass of a proton is similar to that of a neutron

D. The mass of a neutron is slightly greater than that of an electron.

Subatomic particles refer to the basic building blocks of matter that make up atoms. The main subatomic particles are:

Protons: Positively charge particles found in the nucleus of an atom. The number of protons in an atom determines the atomic number, and thus the identity, of the element.

Neutrons: Neutral particles found in the nucleus of an atom. The number of neutrons in an atom can vary, resulting in isotopes of the same element.

Electrons: Negatively charged particles that orbit the nucleus of an atom. The number of electrons in an atom determines its chemical properties and reactivity.

These subatomic particles interact with each other through electromagnetic forces to form the atoms and molecules that make up matter. Understanding the behavior and interactions of subatomic particles is key to understanding the properties and behavior of matter on a macroscopic scale.

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Answer: If the potential energy of the reaction system decreases, then kinetic energy in the surroundings increases and the temperature of the surroundings rises

Explanation:

The decrease in the potential energy results in an increase in the temperature of the system and surroundings.

Mechanical energy has been described as the sum of the kinetic and the potential energy in the system. With the increase in the potential energy, there has been a decrease in the kinetic energy and vice versa.

The decrease in the potential energy results in an increase in the kinetic energy of the system. The kinetic energy has been termed as the energy of performing work. The rise in the kinetic energy results in an increase in the work done in the system and there has been an increase in the temperature of the system.

Thus, the decrease in the potential energy results in an increase in the temperature of the system and surroundings.

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• Given mol of CO2 = 13.2 mols

Molar Mass of CO2 = ( 12+(16*2) = 44g/mol

Mass can be calculated by the following :

• Moles of CO2 = m (weight) / Molar Mass

weight = Molar Mass * moles of CO2

= 44 * 13.2 = 580.8 grams

Therefore weight (mass) of CO2 = 580.8 g

Answer: Mass number will be 14.

Explanation:

Given : 6 and 8 protons and neutrons.

Solution :

According to the formula of Atomic mass number,

Atomic mass number = protons+ neutrons

                                      = 6 + 8

                                      =  14

Answer:

National fire protection Association

Explanation:

the nfpa is a global self funded nonprofit orgnazation establised in 1896 devoted to eliminating death injury protery loss and ecomomic loss due to fire and electrical hazards

Answer:

that's a good question but I'm not too sure

Answer:

meiosis

Explanation:

The vapor pressure of butane in the lighter at 25.0 °C is approximately 0.493 atm.

We are given that the boiling point of butane at 1 atm pressure is -1.0 °C, which is equivalent to 272.15 K. At this temperature, the vapor pressure of butane is 1 atm. We are also given that the enthalpy of vaporization of butane is 22.44 kJ/mol and R = 8.314 x 10⁺³ kJ/mol K.

We want to find the vapor pressure of butane at 25.0 °C, which is equivalent to 298.15 K. Substituting these values into the Clausius-Clapeyron equation, we get:

ln(P2/1 atm) = (-22.44 kJ/mol / (8.314 x 10⁻³ kJ/mol K)) * (1/298.15 K - 1/272.15 K)

Solving for P2, we get:

P2 = 1 atm * e⁻²² kJ/mol / (8.314 x 10⁻³ kJ/mol K)) * (1/298.15 K - 1/272.15 K)]

P2 = 0.493 atm

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Answer:

c- observations

hope this helps

Explanation:

Answer:

A

Explanation:

The weak base ionization constant (Kb) for \(C_{4} H_{4} N_{2}\) is equal to Option A.

A weak foundation is a base that makes ionize only slightly in an aqueous solution. Remember that a foundation can be defined as an object, which receives a hydrogen ion from another object.

To obtain an aqueous solution of a weak acid, the dissociation constant is called the acid ionization constant (Ka). Similarly, the constant equilibrium of a weak base reaction with water is the base ionization constant (Kb). In any conjugate acid-base pair, KaKb = Kw.

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Atoms are the smallest indivisible part of an element while molecules are combinations of two or more atoms. See details below.

Atoms are the smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a nucleus surrounded by electrons.

Molecules, on the other hand, are the smallest particle of a specific element or compound that retains the chemical properties of that element or compound. They are two or more atoms held together by chemical bonds.

An element is the simplest chemical substance that cannot be decomposed in a chemical reaction or by any chemical means and made up of atoms all having the same number of protons.

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