an aqueous solution with a ph of 3.00 is diluted from 2.0 l to 4.0 l. what is the ph of the diluted solution

Given data

Mass of the piece of a solid carbon dioxide is m = 6.8 g

Volume of the solid carbon dioxide is V=4L

The temperature is T = 23°C = 296 K . The pressure of the air in the container is

740 Pho = 740 torr = atm 76

The temperature is T = 23 deg * C = 296K

The pressure of the air in the container is

Pho = 740 torr 740 760 atm

(a)The expression of ideal gas equation is given by,

PV = nRT

PV = (m/M) * RT

Where, P is the pressure in which the container after all the carbon dioxide is vaporizes.

M is the molar mass of the solid carbon dioxide (M = 44.01g / m * ol)

R is the universal gas constant R = (0.0832kJ / m * olK)

Substitute the all values in the above equation and calculate the value of pressure in which the container after all the carbon dioxide is vaporizes.

6.8 g 44.01 g/mol P(4L)= P= (0.0832 kJ/mol K) (296 K) (0.1545 mol) (0.0832 kJ/mol K) (296 K)

P = 0.951atm

(4L)Thus, the pressure in which the container after all the carbon dioxide is vaporizes is 0.951 atm.

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if 30 ml of 5.0 × 10–4 m Ca(NO₃)₂ is added to 70 ml of 2.0 × 10–4 m naf, (A) No, the precipitate will not form because the ion product is greater than Ksp.

To solve the given problem, we need to compare the ion product (IP) of CaF₂ with its solubility product constant (Ksp) to determine if a precipitate will occur.

Given information:

Volume of Ca(NO₃)₂ solution: 30 mL = 30 × 10⁻³ L

Molarity of Ca(NO₃)₂ solution: 5.0 × 10⁻⁴ M

Volume of NaF solution: 70 mL = 70 × 10⁻³ L

Molarity of NaF solution: 2.0 × 10⁻⁴ M

Ksp of CaF₂: 4.0 × 10⁻¹¹

Calculate the moles of Ca(NO₃)₂ and NaF:

Moles of Ca(NO₃)₂ = Volume of Ca(NO₃)₂ solution × Molarity of Ca(NO₃)₂ = (30 × 10⁻³ L) × (5.0 × 10⁻⁴ M)

Moles of NaF = Volume of NaF solution × Molarity of NaF = (70 × 10⁻³ L) × (2.0 × 10⁻⁴ M)

Determine the limiting reactant:

Divide the moles of each reactant by their stoichiometric coefficients to compare:

Moles of Ca(NO₃)₂ / 1 = Moles of Ca(NO₃)₂

Moles of NaF / 2 = Moles of NaF

Calculate the moles of CaF₂ formed based on the limiting reactant:

Moles of CaF₂ = Moles of limiting reactant (either Ca(NO₃)₂ or NaF) / 2

Calculate the ion product (IP) of CaF₂:

IP = [Ca²⁺] × [F⁻]²

Since the concentration of Ca²⁺ is equal to the concentration of F⁻ (from the stoichiometry), we can substitute it as [Ca²⁺] × [F⁻]² = [CaF₂]².

Compare the ion product (IP) with the solubility product constant (Ksp):

If IP > Ksp, a precipitate of CaF₂ will form. If IP ≤ Ksp, no precipitate will form.

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Complete question :

If 30 mL of 5.0 x 10-4 M Ca(NO3)2 are added to 70 mL of 2.0 x 10-4 M NaF, will a precipitate occur?

(Ksp of CaF2 = 4.0 x 10-11)

A. No, because the ion product is greater than Ksp .

B. Yes, because the ion product is less than Ksp .

C. No, because the ion product is less than Ksp .

D. Not enough information is given.

E. Yes, because the ion product is greater than Ksp .

Answer:

Hurricanes require some basic components to generate and strengthen: warm ocean water. a lot of moisture in the air. low vertical wind shear

Explanation:

Explanation:

c and d. I'm not sure which one is better tho

Nitrogen fixation is the part of the nitrogen cycle where the nitrogen is fixed as nitric oxide. Urea {CON₂H₄} should be added to fertilizer to get the best results. Thus, option B is correct.

Fertilizers are substances that are composed of organic and inorganic compounds that are used to provide nutrients to the plants and crops for growth, development, pest, and insect resistance.

The fertilizers mainly comprise nitrogen, potassium, and phosphorus. Urea {CON₂H₄} has the maximum concentration of nitrogen (46%) and will be the most effective.

The other compound ammonium nitrate {NH₄NO₃} contains 34%, ammonium sulfate { (NH₄)₂SO₄} which comprises 21% of nitrogen by mass, whereas N₂F₂ is not used as a fertilizer.

Therefore, option B. Urea {CON₂H₄} is best to use as fertilizer.

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100 grams of water is being heated.

The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.

It is a measure of how much energy it takes to raise the temperature of a substance. It is the amount of heat necessary to raise one mass unit of that substance by one temperature unit.

It is given by the formula -

                                                  Q = mcΔT

where, Q = amount of heat

m = mass

c = specific heat

ΔT = Change in temperature

Given,

Q = 4180J

c = 4.18 J/g⁰C

ΔT = 10⁰C

Q = mcΔT

4180 = m × 4.18 × 10

m = 100g

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Answer:

Fold the filter paper in fourths before placing it in the funnel and pour all the liquid through the funnel.

Photochemical oxidants are examples of secondary pollutants.

Photochemical oxidants are secondary pollutants as they are formed in the atmosphere due to the combination of primary pollutants, such as nitrogen oxides and volatile organic compounds, with sunlight. These oxidants can cause smog, respiratory problems, and other environmental issues.

The other options mentioned in the question are: Aerosols, volatile organic compounds, combustion gases, and dust from soil erosion are examples of primary pollutants.Aerosols are solid or liquid particles that are suspended in the air. They can come from natural sources like dust or volcanic ash, or human-made sources like industrial emissions.

Volatile organic compounds (VOCs) are organic chemicals that easily evaporate into the air. They are emitted by many sources such as motor vehicles, industrial processes, and household products.Combustion gases are produced by the burning of fossil fuels or biomass. They can contribute to smog and other environmental problems.Dust from soil erosion is also a primary pollutant, which can cause respiratory problems and contribute to air pollution.

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Answer:

A). half, higher

Explanation:

The Formal charge is elaborated as the 'allocated charge to a molecules' atom' on the basis of the assumption that the electrons present in the chemical bond are equally split among the atoms. It is estimated by 'halving the no. of bonding electrons that encircle the atom.

While Oxidation number is characterized as the 'hypothetical charge of an atom that is present within a molecule.' It is also defined as 'the actual number of lost or gained electrons or the rate at which the electrons are gained or lost by an atom to develop a chemical bond along with the other atom.' It is calculated by allocating or sharing the electrons having the higher electronegativity belonging to a specific bond with the other. Thus, option A is the correct answer.

Answer:

1 ppm :)

Explanation: i was guessing and 1 ppm was the answer :)

Distillation, separates solutions based on the differences in boiling points of the components.

Based on the components of the mixture's varying affinities for a stationary phase and a mobile phase, chromatography separates solutions. The mobile phase is often a liquid or a gas, while the stationary phase might be either a solid or a liquid.

Contrarily, distillation divides solutions according to variations in the components' boiling points. The lower boiling point component will evaporate and ascend as a vapor when a combination is heated, whereas the higher boiling point component will remain in the liquid phase.

This technique takes advantage of the fact that various substances have varying boiling points. A purified component is then obtained by condensing and collecting the vapor.

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Independent: Gasoline with different amounts of lead Dependent: Amount of pollution produced

C2H2 will be left  when the burning is complete.

The equation of the reaction is; 2C2H2 + 5O2 --> 4CO2 + 2H2O

The number of moles of C2H2 reacting is = 1.20 g/26 g/mol = 0.046 moles

The number of moles of O2 is = 3.50 g/32 g/mol = 0.109 moles

Since;

2 mole of C2H2 reacts with 5 moles of O2

x moles of C2H2 reacts with 0.109 moles of O2

x = 2 mole × 0.109 moles/5 moles

x = 0.044 moles of C2H2.

It then follows that C2H2 is the reactant in excess so C2H2  will be left  when the burning is complete.

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Explanation:

By rubbing the balloon on a sweater, you can transfer negative charges onto the surface of the balloon

The final temperature is  -124Celsius

Charles's Law is a fundamental gas law that describes the relationship between the volume and temperature of a gas at constant pressure. It states that the volume of a given amount of gas is directly proportional to its absolute temperature, provided that the pressure and the number of particles are held constant.

Give that;

V1/T1 = V2/T2

V1 = 420 ml

T1 =  25.0 + 273 = 298 K

V 2 = 210 ml

T2 = ??

Thus;

V1T2 = V2T1

T2 = V2T1/V1

= 210 ml *  298 K/420 ml

= 149 K or -124Celsius

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Oxygen forms two bonds and the configuration is 1s₂ 2s₂ 2p₄, Phosphorus forms three bonds and the configuration is [Ne]3s₂ 3p₃, Gallium forms four bonds and the configuration is [Ar] 3d₁₀ 4s₂ 4p₁

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After 72 days, a 1050 mg sample of Iodine-131 would have decayed to approximately 46.87 mg.

A half-life is the time it takes for half of a sample of a radioactive isotope to decay. It is a characteristic property of each isotope and can be used to predict how long it will take for a given sample to decay to a certain amount. The amount of an isotope remaining after a certain amount of time can be calculated using the half-life and the formula N = N0 * (1/2)^(t/T).

Iodine-131 is used in medical treatments because it emits beta particles that can destroy cancerous cells. Its short half-life is an advantage because it allows for a higher dose of radiation to be delivered to the tumor while minimizing the amount of radiation exposure to healthy tissues. After a few weeks, the Iodine-131 decays to a negligible amount and the patient is no longer radioactive.

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Answer:

the first one Calories

Answer:

below

Explanation:

Calculating the number of particles

1. The number of particles in a substance can be calculated using:

2. Number of particles = Avogadro constant × the amount of substance in mol.

3. Calculate the number of water molecules in 0.5 mol of water.

4. Number of water molecules = Avogadro constant x amount of substance in mol.

The scientists must estimate the volume of 50 kg BHM in cubic meters to plan the space shuttle.

\(Density=\frac{Mass}{volume}\)

So, from this, we can conclude that scientists must estimate the volume of 50 kg BHM in cubic meters to plan the space shuttle.

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The balanced chemical reaction is given as follows:

(NH₄)₃PO₄ (aq) + AI(NO₃)₃ (aq) → AIPO₄ (s) + 3NH₄NO₃ (aq)

A balanced chemical equation is one that has the same number of atoms of each type in the reaction on both the reactant and product sides. In a balanced chemical equation, both the mass and the change are equal.

The law of conservation of mass, which states that "the total mass of all the products of reaction in a chemical reaction equals the total mass of all the reactants," is satisfied by balancing chemical equations.

Thus, A solution of ammonium phosphate is mixed with a solution of aluminum nitrate. If aluminum phosphate is insoluble in water, its reaction is  (NH₄)₃PO₄ (aq) + AI(NO₃)₃ (aq) → AIPO₄ (s) + 3NH₄NO₃ (aq).

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Answer:

The closer the transition state to the product, the more stable it is. It is because this transition state is closest to the final form of the product, which is usually stable

Answer:

The answer is A. Chemical

Explanation:

Have a nice day

Answer:

Chemical i think i tried googling to figure it out

Explanation:

Answer:

oxygen, carbon, hydrogen, nitrogen, and sulfur

Explanation:

The name for this W(C2H3O2)4 is the chemical formula for lead(IV) acetate, often known as lead tetraacetate, is Pb(C2H3O2)4.

Chemical formula is defined as any of a number of ways to describe the structure or content of chemical substances. The chemical formula is a way of expressing information about the atomic proportions that make up a certain chemical compound or molecule using the numbers and symbols of the chemical elements. The sorts of atoms and their numbers in a molecule or compound are described using chemical formulae. Each element's atoms are denoted by one or two distinct letters.

It is not a salt because it is a colorless solid that dissolves in nonpolar, organic liquids. Moisture causes it to break down, therefore acetic acid is usually added when storing it. The substance is utilized to create organic compounds.

Thus, the name for this W(C2H3O2)4 is the chemical formula for lead(IV) acetate, often known as lead tetraacetate, is Pb(C2H3O2)4.

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Answer:

57

Explanation:

a mass number is protons plus neutrons so we add them

30+27

57

Hopes this helps please mark brainliest

Answer:

57

Explanation:

the other guy is right

As the redeposited minerals build up after countless water drops, a stalactite is formed. If the water that drops to the floor of the cave still has some dissolved calcite in it, it can deposit more dissolved calcite there, forming a stalagmite. Speleothems form at varying rates as calcite crystals build up. They are formed from condensation inside a cave, dripping off the ceiling.

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The relationship between acceleration due to gravity (g), mass of earth (M) and the radius of earth (R) is \(g = \frac{GM}{R^2} \).

The weight of an object is determined as the product of the object's mass and acceleration due to gravity.

F = mg

The gravitational force between two objects in the universe is directly proportional to the product of mass of the objects and inversely proportional to the square of the distance between the objects.

\(F = \frac{GmM}{R^2} \)

\(mg = \frac{GmM}{R^2} \\\\ g = \frac{GM}{R^2} \)

where;

M is the mass of the earth

R is the radius of the earth

Thus, the relationship between acceleration due to gravity (g), mass of earth (M) and the radius of earth (R) is \(g = \frac{GM}{R^2} \).

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In this instance, the equilibrium concentration of Cu⁺ with 0.10 M Br⁻ is similarly 0.10 M.

To determine the concentration of Cu⁺ in equilibrium with CuBr(s) and 0.10 M Br⁻, we need to consider the solubility equilibrium of CuBr.

The solubility equilibrium for CuBr can be represented as follows:

CuBr(s) ⇌ Cu⁺(aq) + Br⁻(aq)

The solubility product constant (Ksp) expression for this equilibrium is:

Ksp = [Cu⁺][Br⁻]

Since the stoichiometry of the reaction is 1:1 between Cu⁺ and Br⁻, the concentration of Cu⁺ in equilibrium will be equal to the concentration of Br⁻.

Therefore, in this case, the concentration of Cu⁺ in equilibrium with 0.10 M Br⁻ is also 0.10 M.

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The concentration of Cu+ in equilibrium with solid CuBr and 0.10M Br- is 7.9 x 10-5 M. This happens due to the common ion effect, which is the presence of extra Br- ions in solution that suppress the dissolution of CuBr.

You are asked to find the concentration of Cu+ in equilibrium with solid CuBr and 0.10M Br-. The solubility product constant (Ksp) defines the equilibrium between a solid and its constituent ions in a solution. The balanced equation for this dissolution process is:

CuBr(s) <==> Cu+ (aq) + Br- (aq)

For CuBr, the Ksp value is 7.9 x 10-5 M. This represents product of concentrations of its ions in the solution. However, we already have 0.10M Br-, which is much higher than that provided by the dissolution of CuBr. Therefore, the Cu+ concentration in equilibrium is essentially equal to the Ksp, i.e. 7.9 x 10-5 M.

Here, the concept of the common ion effect comes into play. The presence of extra Br- ions from the solution suppresses the dissolution of CuBr, thereby controlling the Cu+ concentration in the solution.

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