What is the importance of the presence of silicate in and asteroids? ​

The pH of the buffered solution of 0.42 M acetic acid and 0.15 M sodium acetate before and after 0.0030 moles of NaOH (aq) are added to 0.100 L of the buffer is 4.43 and 4.72, respectively.

A buffer solution is an aqueous solution that resists changes in pH when small amounts of an acid or a base are added to it. A buffer solution is typically made up of a weak acid and its conjugate base, or a weak base and its conjugate acid. The Henderson-Hasselbalch equation, which is used to calculate the pH of a buffer solution, is as follows:pH = pKa + log [A-]/[HA]Where pH is the pH of the buffer solution, pKa is the acid dissociation constant of the weak acid, [A-] is the concentration of the conjugate base, and [HA] is the concentration of the weak acid.Before any acid or base is added, the pH of the buffer solution can be calculated as follows:

Acetic acid (CH3COOH) is a weak acid with a pKa of 4.76. Sodium acetate (CH3COONa) is the conjugate base of acetic acid. Therefore, [A-] = 0.15 M and [HA] = 0.42 M - 0.0030 M = 0.417 M. pH = 4.76 + log (0.15/0.417) = 4.43

After 0.0030 moles of NaOH are added to the buffer solution, they will react with the acetic acid to form sodium acetate and water:

CH3COOH (aq) + NaOH (aq) → CH3COONa (aq) + H2O (l)

The amount of acetic acid that reacts with the NaOH is given by the stoichiometry of the reaction:

0.0030 moles of NaOH react with 0.0030 moles of CH3COOH.

Therefore, the new concentration of CH3COOH is 0.417 M - 0.0030 M = 0.414 M.

The new concentration of CH3COONa is 0.15 M + 0.0030 M = 0.153 M.Using these new concentrations, we can calculate the new pH of the buffer solution:

pH = 4.76 + log (0.153/0.414) = 4.72

Therefore, the pH of the buffered solution of 0.42 M acetic acid and 0.15 M sodium acetate before and after 0.0030 moles of NaOH (aq) are added to 0.100 L of the buffer is 4.43 and 4.72, respectively.

To know more about buffered solution visit:

https://brainly.com/question/31367305

#SPJ11

Answer :position

Explanation:

Potential energy is the energy stored in an object due to its position

Answer:

1.T

2.I

Explanation:

hope it help

#carry on learning

The object and description that matches is Object 2 and T.

Object 1 has no matching description.

A Fish aquarium filter is a filter whose function is to clean the water of debris, removes the toxic buildup of ammonia and nitrates, and aerates the water so that fish can in a conducive environment and breathe properly

An engine oil filter is a filter whose function is to filter and remove contaminants that may be present in the engine oil, transmission oil, lubricating oil, or hydraulic oil in order for proper functioning of the engine.

Therefore, the object and description that matches is Object 2 and T.

Object 1 has no matching description.

Learn more about filters and their uses at: https://brainly.com/question/10719424

The dissolution of gases in water is exothermic therefore oceans will dissolve less CO2 as their temperatures rise.

The term  effervescence refers to the rise of a gas in a system or simply put, it is the evolution of gas. When an  effervescent tablet is placed in the water under each inverted glass, a gas will rise in each glass.

The air space in the hot glass  is greater than the air space in the cold glass  We can see that the gas has a lower solubility in hot water than in cold water. This is because, solubility of gases is exothermic.

The bottle that is left in the hot sun will have more fizzing because the CO2 does not dissolve owing to the higher temperature.

The rise in ocean temperature means that the oceans will dissolve less CO2 in the future and reduce the CO2 holding capacity of the oceans.

Learn more about CO2: https://brainly.com/question/867804?

Given the activity series of elements, the reaction that will occur is: 2AgNO3 + Ni -----> Ni(NO3)2 + 2Ag

The activity series of elements can also be called the "reactivity series" of elements because it actually arrangement of elements in order of decreasing reactivity. The most reactive elements are higher up in the series while the less reactive elements are found at the bottom of the series.

Given the fact that nickel is far higher in the series than silver, nickel can displace silver from an aqueous solution of its salt. Hence the equation; 2AgNO3 + Ni -----> Ni(NO3)2 + 2Ag is possible.

Learn more: https://brainly.com/question/8053373

Answer:

Option (C) = 2AgNO3 + Ni Right arrow. Ni(NO3)2 + 2Ag

Explanation:

EDG22, pls tell me if im wrong!

In the reaction of an alkyl bromide with sodium iodide in acetone, the resulting alkyl iodide may be attacked by a bromide ion due to a possible nucleophilic substitution reaction. During the initial reaction, the sodium iodide reacts with the alkyl bromide to form an alkyl iodide and sodium bromide.

However, if there is excess alkyl bromide present, the resulting alkyl iodide may undergo a second substitution reaction with the excess alkyl bromide acting as the nucleophile. This can occur because the alkyl iodide is still reactive and can be attacked by the bromide ion, which is also present in the reaction mixture. The resulting product would be a mixed alkyl halide containing both iodine and bromine.

Find out more about alkyl bromide

brainly.com/question/31412665

#SPJ11

When a solution of aluminum chloride is mixed with a solution of potassium phosphate, a precipitate of aluminum phosphate (AlPO4) will form. The reaction between aluminum chloride and potassium phosphate can be represented as follows: AlCl3 + K3PO4 → AlPO4 + 3KCl .

This is due to the fact that the aluminum ion (Al3+) and the phosphate ion (PO43-) can react to form a solid precipitate, which is insoluble in water.

Therefore, when a solution of aluminum chloride is mixed with a solution of potassium phosphate, a white precipitate of aluminum phosphate (AlPO4) will form, while potassium chloride (KCl) will remain in solution.

To know more about aluminum phosphate (AlPO4), here

brainly.com/question/15146433

#SPJ4

Carbon emissions includes the carbon dioxide and carbon monoxide in the atmosphere, produced by business processes and systems.

What does carbon emission mean?

Carbon dioxide emissions or CO2 emissions are emissions stemming by the burning of fossil fuels and the manufacture of cement; they contain carbon dioxide produced during consumption of solid, liquid, and gas fuels also as gas flaring.

A drive to figure , a flip of a light-weight switch and a flight out of town all rely on the combustion of fossil fuels like oil, coal and gas. When fossil fuels burn, they emit greenhouse gases like CO2 that contribute to heating . Ninety-eight percent of atmospheric CO2 comes from the combustion of fossil fuels.

Learn more about carbon emission:

brainly.com/question/1301348

#SPJ4

The pH of this solution is approximately 4.74, indicating it is slightly acidic. The presence of sodium acetate, a salt of acetic acid, acts as a buffer and helps maintain the pH of the solution.

The pH of a solution containing\(10^-2\) M acetic acid and 2 x\(10^-2\) M sodium acetate can be determined using a logarithmic concentration diagram.

To determine the pH of the solution, we need to consider the dissociation of acetic acid and the hydrolysis of sodium acetate. Acetic acid (CH3COOH) is a weak acid that partially dissociates in water, releasing hydrogen ions (H+) and acetate ions (CH3COO-).

The dissociation of acetic acid can be represented as follows:

CH3COOH ⇌ H+ + CH3COO-

The equilibrium constant for this dissociation is known as the acid dissociation constant (Ka). The pKa value of acetic acid is approximately 4.74. The pKa is the negative logarithm of the Ka value.

In the given solution, we have both acetic acid and sodium acetate. Sodium acetate (CH3COONa) is a salt that dissociates completely in water, releasing sodium ions (Na+) and acetate ions (CH3COO-). The acetate ions from sodium acetate can react with any additional H+ ions present in the solution through hydrolysis, which helps maintain the pH.

Using a logarithmic concentration diagram, we can determine that the pH of the solution containing \(10^-2\) M acetic acid and 2 x \(10^-2\) M sodium acetate is approximately 4.74, which is slightly acidic.

The presence of sodium acetate acts as a buffer, helping to resist changes in pH by absorbing excess H+ ions or releasing additional H+ ions as needed to maintain the pH within a certain range.

Learn more about logarithmic concentration from the given link:

https://brainly.com/question/3072484

#SPJ11

Explanation:

We know that,

1 mile = 1609.34 m

We need to find how many meters are present in the 12.45 miles. To find it use unitary method as follows :

12.45 mile = 1609.34 × 12.45

12.45 mile=20036.283 meters

or

\(12.45\ mile=2.0036\times 10^4\ m\)

Hence, this is the required solution.

Answer:

Explanation:

c

The refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.

To calculate the kilowatt-hours (kWh) of electric energy used by the refrigerator in 30 days, we need to multiply the power rating by the total running time.

Given:

Power rating of the refrigerator = 500 W

Running time per day = 12 hours

Number of days = 30

First, we need to convert the power rating from watts to kilowatts:

Power rating = 500 W / 1000 = 0.5 kW

Next, we calculate the total energy used in kilowatt-hours (kWh) over the 30-day period:

Energy used = Power rating × Running time × Number of days

Energy used = 0.5 kW × 12 hours/day × 30 days

Energy used = 180 kWh

Therefore, the refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.

For more question on energy

https://brainly.com/question/29339318

#SPJ8

The number of atoms in 0. 50 moles of zinc is 3.01 x 10 ²³

The number of atoms in one particular carbon isotope, carbon-12, serves as the basis for the idea of the "mole." A mole of carbon atoms, or 6.02 10²³ carbon atoms, can be found in 12g of carbon-12.

The remaining atoms on the periodic table are identified by their molar masses, which indicate how many grams of each are required to make a mole, or 6.02 x 10 ²³atoms, of that element.

Zinc will have 6.02 x 10²³ if it has 1 mole of zinc. In chemistry, we love to cancel units, therefore we simply do so to address your issue.

The number of atoms in one particular carbon isotope, carbon-12, serves as the basis for the idea of the "mole." A mole of carbon atoms, or 6.02 10 23 carbon atoms, can be found in 12g of carbon-12.

The remaining atoms on the periodic table are identified by their molar masses, which indicate how many grams of each are required to make a mole, or 6.02 10 23 atoms, of that element.

Zinc will have 6.02 x 10 ²³ if it has 1 mole of zinc. In chemistry, we love to cancel units, therefore we simply do so to address your issue.

number of Zinc atoms= 0.50 moles x 6.02 x 10 ²³ = 3.01 x 10 ²³

Learn more about number of atom at https://brainly.com/question/30282381

#SPJ4

The radius of a barium atom is 2.68 Å.

Barium is a chemical element that is silvery-white in color and can be found in the periodic table with the symbol Ba.

The density of barium is 3.51 g/cm3, and it has a body-centered cubic unit cell that crystallizes.

Determine the length of the edge of the unit cell. Since barium has a body-centered cubic unit cell, the length of the edge of the unit cell:

Edge length = 4r /√3

Where r is the radius of the atom.

The volume of the unit cell using the formula:

Volume of unit cell = Edge length³

The number of atoms present in the unit cell. Since barium has a body-centered cubic unit cell, the number of atoms present in the unit cell :

Number of atoms in the unit cell = 2

The mass of a single atom of barium using the formula:

Mass of a single atom = Density of barium / Avogadro’s number

Where Avogadro’s number is 6.02 × 10²³ atoms/mol.

The radius of a barium atom using the formula:

Radius of barium atom = (3 × volume of unit cell / 4 × π × number of atoms in the unit cell)¹/³

The radius of the barium atom :

Edge length = 2r√3

r = (Edge length) / 2√3

Volume of the unit cell = (Edge length)³

Number of atoms in the unit cell = 2

Mass of a single atom = Density of barium / Avogadro’s number

Radius of barium atom = (3 × volume of unit cell / 4 × π × number of atoms in the unit cell)¹/³

Therefore, the radius of a barium atom is 2.68 Å.

to know more about barium refer here:

https://brainly.com/question/30888146#

#SPJ11

The distance between atoms widens as their vibrations get more rapid. The substance's state of matter is determined by the movement and spacing of its particles. The thing grows or  enhanced molecular mobility.

Because kinetic energy of a liquid's molecules rises as the temperature does. As a result, the molecules have more flexibility to travel across larger volumes as the forces that attraction between them are eventually overcome.

According to the gas kinetic theory, as a gas's temperature rises, the typical kinetic energy of its molecules rises, leading to more motion. This real gases equation PV=NkT predicts that the increased velocity will increase the gas's outer pressure.

To know more about atoms visit:

https://brainly.com/question/30898688

#SPJ1

In a permanent magnet, a magnetic field is produced by the composite motions of electrons in geometrically aligned atoms.

A magnetic field is characterized by poles called north and south. Magnetic polarity refers to the orientation of these poles in space.

Answer:

The polarity of a magnet usually means the direction of a vector which points from the south pole of the magnet toward the north pole. ... In this case the polarity is expressed in a way that indicates a circular direction, such as clockwise, or as a perpendicular vector representing the curl of the internal field.

Explanation:

Answer:

SEE EXPLANATION

Explanation:

If i refer to the bottle at the left hand side as A and the bottle at the right hand side as B. I can say that the bottle A contains solutes which are more soluble than the solutes in bottle B. consequently, A has a lower vapour pressure than B.

We can also see that the pressure in A is much higher than in B(as indicated by the length of the arrows). The higher the pressure, the greater the solubility of the gas.  Henry's Law states that: The solubility of a gas in a liquid is directly proportional to the pressure of that gas above the surface of the solution.

Again let me call  the beaker on the left A and the beaker on the right B. We can see that the beaker on the left contains 10 ml of solution while the beaker on the right contains 50 ml of solution. It follows that beaker A contains a more concentrated solution since that much amount of solute is contained in a smaller volume than in beaker B as shown in the image.

Answer: The newly occupied volume is 11.46 L

Explanation:

Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.

\(P\propto \frac{1}{V}\)     (At constant temperature and number of moles)

\(P_1V_1=P_2V_2\)  

where,

\(P_1\) = initial pressure of gas  = 0.999 atm

\(P_2\) = final pressure of gas = 0.802 atm

\(V_1\) = initial volume of gas  = \(9.20 L\)

\(V_2\) = final volume of gas  = ?

\(0.999\times 9.20=0.802\times V_2\)  

\(V_2=11.46L\)

Therefore, the newly occupied volume is 11.46 L

The molar solubility of BaCrO4 in 1.6 x 10^-3 M Na2CrO4 is 5.25 x 10^-10 M.

The solubility of BaCrO4 can be calculated using the solubility product constant (Ksp) and the stoichiometry of the balanced chemical equation for the dissolution of BaCrO4 in water.

The balanced chemical equation for the dissolution of BaCrO4 in water is:

BaCrO4(s) ↔ Ba2+(aq) + CrO42-(aq)

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

Ksp = [Ba2+][CrO42-]

(a) To calculate the molar solubility of BaCrO4 in pure water:

Ksp = [Ba2+][CrO42-] = (x)(x) = x^2

where x is the molar solubility of BaCrO4 in pure water.

Rearranging the equation and solving for x, we get:

x = sqrt(Ksp) = sqrt(2.1 x 10^-10) = 1.45 x 10^-5 M

Therefore, the molar solubility of BaCrO4 in pure water is 1.45 x 10^-5 M.

(b) To calculate the molar solubility of BaCrO4 in 1.6 x 10^-3 M Na2CrO4:

In this case, the dissolution of BaCrO4 is affected by the common ion effect due to the presence of CrO42- ions from Na2CrO4. The balanced chemical equation for the reaction is:

BaCrO4(s) + 2Na+(aq) ↔ Ba2+(aq) + CrO42-(aq) + 2Na+(aq)

The initial concentration of CrO42- ions is 1.6 x 10^-3 M, and the concentration of BaCrO4 is x. Therefore, the equilibrium concentration of CrO42- ions is (1.6 x 10^-3 + x) M, and the equilibrium concentrations of Ba2+ and CrO42- ions are both x M.

The Ksp expression for the reaction is:

Ksp = [Ba2+][CrO42-] = (x)(1.6 x 10^-3 + x)

Substituting the value of Ksp and solving for x using the quadratic formula, we get:

x = 5.25 x 10^-10 M

Therefore, the molar solubility of BaCrO4 in 1.6 x 10^-3 M Na2CrO4 is 5.25 x 10^-10 M.

Visit here to learn more about stoichiometry brainly.com/question/28780091

#SPJ11

The kind of material used to bake food will influence how much energy is required to heat it up and how quickly it cools. Due to the fact that metal conducts heat more effectively than glass, heating up metal pans often takes longer than heating up glass ovenware.

This implies that the metal absorbs heat from the oven more rapidly and effectively, needing more energy to attain the appropriate temperature. However, oven-safe glass will cool down more quickly than metal.

This is due to the fact that glass is a poor heat conductor, which means it takes more time for the heat to be absorbed by the glass. The glass will shatter after the dish is cooked and the heat is turned off.As the heat takes longer to dissipate, the metal cools down more quickly than the other materials.

In conclusion, glass cools more quickly than metal and requires less energy to heat up than oven-safe metal. This is because metal absorbs heat from the oven more rapidly and effectively than glass since metal is a stronger heat conductor than glass.

However, because glass is a poor conductor of heat, it takes longer for the food to cook and the heat to be absorbed. The glass cools down more quickly than the metal when the heat is gone.

Learn more about conductor   at:

https://brainly.com/question/14405035

#SPJ3

The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

Learn more about mixture at: https://brainly.com/question/12160179

#SPJ1

Fresh water collection areas is the area where you can find most of the

world's drinking water.

This is the type of water which contains low amount of dissolved salts and

solid particles which makes it very suitable for drinking.

Examples of Freshwater collection areas include the following:

Read more about Freshwater here https://brainly.com/question/20458567

this was great and fun to do

Answer:

hi I believe the answer is (C)

Explanation:

I'm not 100%, sure if (C) is the right answer sorry I just have a feeling that's it (C) and also after I did a little tad bit of research but I'm sorry if it isn't right. ( well I'm going to go to sleep.,. I hope you get a good grade in your assignment:>)

Answer:

The coefficient of aluminum nitrate is 2.

Explanation:

The reaction between aluminum nitrate and calcium phosphite is:

Al(NO₃)₃ + CaHPO₃ → Al₂(HPO₃)₃ + Ca(NO₃)₂  

Now, we need to balance the equation. Let's begin with phosphite anion. On the reactant side we have 1 molecule of the anion, and on the products side we have 3 of it, so we need to add a coefficient of 3 before CaHPO₃:

Al(NO₃)₃ + 3CaHPO₃ → Al₂(HPO₃)₃ + Ca(NO₃)₂

The number of Ca atoms on the reactants side is now 3 and on the products side is 1, so we need to add a coefficient of 3 as follows:

Al(NO₃)₃ + 3CaHPO₃ → Al₂(HPO₃)₃ + 3Ca(NO₃)₂  

The reactants side has 1 atom of Al, and the products side has 2. Let's add a coefficient of 2 on the reactant side:

2Al(NO₃)₃ + 3CaHPO₃ → Al₂(HPO₃)₃ + 3Ca(NO₃)₂  

Finally, the nitrate anion has 6 molecules on the reactant side, which is equal to the number of molecules of NO₃⁻ on the product side.

Hence, in the balanced equation, we have a coefficient of 2 in aluminum nitrate.

I hope it helps you!