How many grams will be needed to make a 1.00 Liter solution of 0.500M
sodium chloride?

Answer:

Copper, Sodium, and Francium

Explanation:

The ideal bonding  angle(s) of the central atom of the compound of the CHClO is 120°

A complex molecule's or ion's bond angle is the angle between the two bonds, or the angle between two orbitals that contain bonding electron pairs surrounding the central atom. It is computed using a spectroscopic approach and expressed in degrees. It conveys information on how bonded electron pair distribution throughout the atoms. It aids in figuring out how the molecules' shapes should be.

Formyl chloride is the organic compound.

Central atom is a carbon atom.

Electron configuration of carbon: 6C: 1s² 2s² 2p²

CHClO

Here, VE = 4

H =1

Cl =7

O =6

Total VE = 6+7+1+4

= 18

Here carbon have sp² hybrid ration so trigonal bond angle is 120°

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Answer:

C. Grinding the solute down into tiny particles.

Explanation:

The dissolution of a solute has something to do with particle size. The size of solute particles usually determines how quickly a solute dissolves in a solvent. When large solute particles are introduced into the solvent, the large solute particles do not easily interact with solvent particles hence preventing easy dissolution in the solvent.

However, when the solute is ground into tiny particles, smaller solute particles interact more effectively with solvent particles hence dissolution is faster.

Therefore, tiny solute particles will dissolve faster in a solvent than a lump of solute. Summarily, small particle size enhances dissolution of a solute in the appropriate solvent.

Answer: stirring the solution vigorously

Grinding the solute down into tiny particles

gently heating the solution

Explanation:

A dissolution will proceed more readily when heated . Breaking up the solute as much as possible will aid in overcoming the solute-solute interaction, as will stirring the solution

Answer:

When surface gravity is ore than the escape velocity gases can not escape from the planet.

Explanation:

Mercury is near Sun and the solar wind is also blowing out the atmosphere.

The gas on a gas giant escape into space, as it does  on mercury because mercury is closest to sun.

A gas giant is defined as  a giant planet  which is composed mainly of elements of hydrogen and helium. Gas giants are also called failed stars because they contain the same basic elements as a star. Jupiter and Saturn are the gas giants of the Solar System. The term "gas giant" was originally synonymous with "giant planet". However, in the 1990s, it became known that Uranus and Neptune are really a distinct class of giant planets, being composed mainly of heavier volatile substances.For this reason, Uranus and Neptune are now often classified in the separate category of ice giants.

Jupiter and Saturn consist mostly of  elements of hydrogen and helium, with heavier elements making up between 3 and 13 percent of their mass. They are thought to consist of an outer layer of compressed molecular hydrogen surrounding a layer of liquid metallic hydrogen, with probably a molten rocky core inside.

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Answer:

90.4 mL

Explanation:

Step 1: Given data

Step 2: Calculate the final volume of the gas

According to Boyle's law, the volume of a gas is inversely proportional to the pressure. We can calculate the final volume of the gas using the following expression.

P₁ × V₁ = P₂ × V₂

V₂ = P₁ × V₁ / P₂

V₂ = 721 mmHg × 113 mL / 901 mmHg

V₂ = 90.4 mL

Answer:

Protein

Explanation:

Answer:

Water, fat, proteins, lactose, and minerals. Milk also contains trace amounts of other substances such as pigments, enzymes, vitamins, phospholipids, and gases.

Answer:

The correct answer is e. 0.40 M

Explanation:

Ba(OH)₂ is a strong base, so it is completely dissociated into ions in aqueous solution:

Ba(OH)₂ → Ba²⁺ + 2 OH⁺

We know that pH + pOH = 14. Thus, we can calculate pOH as follows:

pOH = 14 - pH = 14 - 13.9 = 0.1

According to the definition, pOH = - log [OH⁻]. So, we calculate the concentration of OH⁻:

[OH⁻] = \(10^{-pOH}\) = \(10^{-0.1}\) = 0.79 M

Since, the dissociation equilibrium of Ba(OH)₂ shows that there are 2 moles of OH⁻ per mole of Ba(OH)₂, the concentration of Ba(OH)₂ is:

[Ba(OH)₂]= [OH⁻]/2 = 0.79 M/2= 0.397 M ≅ 0.4 M

They has been an occurrence of rainstorms in galetown.

This is simply when a downpour lasts for any length of time, it usually consists of short bursts of heavy rain interspersed with sporadic periods of lighter rain.

As the temperature rises, more ocean water evaporation occurs, releasing energy as well as water vapor into the atmosphere. The additional water vapor causes more rain and snow to fall. Intense downpours are likely to occur in areas that frequently rain. However, dry places are probably going to get even drier.

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Ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)) mixture could be a useful buffer in a solution. Option C

A buffer is a solution that can resist changes in pH when small amounts of acid or base are added. It consists of a weak acid and its conjugate base or a weak base and its conjugate acid. The buffer system works by the principle of Le Chatelier's principle, where the equilibrium is shifted to counteract the changes caused by the addition of an acid or a base.

In option A, acetic acid (\(CH_3CO_2H\)) is a weak acid, but hydrochloric acid (HCl) is a strong acid. This combination does not form a buffer because HCl is completely dissociated in water and cannot provide a significant concentration of its conjugate base.

Option B consists of sodium hydroxide (NaOH), which is a strong base, and elemental sodium (Na), which is a metal. This combination does not form a buffer as there is no weak acid-base pair involved.

Option D contains acetic acid (\(CH_3CO_2H\)), a weak acid, and ammonia (\(NH_3\)), a weak base. Although they are weak acid and base, they do not form a buffer system together as they are both weak acids or bases and lack the required conjugate acid-base pair.

Option C, ammonia (\(NH_3\)), is a weak base, and ammonium chloride (\(NH_4Cl\)) is its conjugate acid. This combination can form a buffer system. When ammonia reacts with water, it forms ammonium ions (NH4+) and hydroxide ions (OH-).

The ammonium ions act as the weak acid, while the ammonia acts as the weak base. The addition of a small amount of acid will be counteracted by the ammonium ions, and the addition of a small amount of base will be counteracted by the ammonia, thus maintaining the pH of the solution relatively stable.

Therefore, option C, consisting of ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)), is the suitable mixture that could be a useful buffer in a solution.

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Answer: 0.0827

Hope This Will Help You And This Should Be The Correct One.

Since Ghs. 421.78 was deducted from Adjoa's salary pay, her take home pay is Ghs. 4265.46.

Given the following data:

Gross profit can be defined as the profit earned by a business after subtracting its cost of manufacturing and distributing goods from its total revenue (sales).

On a related note, gross salary is the amount of money earned by an individual before any deduction such as tax.

To find how much take home pay Adjoa earned this past month:

\(Take\;home = Gross\;salary - deduction\\\\Take\;home = 4687.24 - 421.78\)

Take home = Ghs. 4265.46.

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When the equilibrium constant is higher than one, it indicates that the reaction prefers to produce products, whereas if the equilibrium constant is less than one, it indicates that the reaction prefers to produce reactants. If the equilibrium constant is equal to one, the reaction proceeds in both directions equally.

In a chemical reaction, exothermic reactions are defined as reactions that release heat into their environment. It implies that heat is given off when reactants are converted to products. At equilibrium, an exothermic reaction continues to be exothermic, meaning that heat is given off even after the reaction reaches a state of equilibrium.There are two types of reactions: exothermic and endothermic.

A reaction is classified as exothermic if it releases heat, and endothermic if it absorbs heat. The direction of the reaction is determined by whether it is exothermic or endothermic. At equilibrium, the reaction is no longer moving forwards or backwards. It's also worth noting that reactions can be exothermic in one direction and endothermic in the other.

The equilibrium constant (K) is defined as the ratio of the concentration of products to the concentration of reactants in the chemical reaction equation. It is used to express how much of the products is generated by the reaction in comparison to the reactants.  the equilibrium constant aids in the identification of the direction in which the reaction will proceed at equilibrium.

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The warmest climate zones, the Tropic Zones are close to the Equator and receive a lot of direct sunlight.

The tropics are parts of Earth that are situated essentially in the centre of the planet. the tropics that, in terms of latitude, are situated between the Tropics of Cancer and Capricorn. The equator and portions of North America are included in the tropics.

As an illustration, hot places are typically found closer to the equator. Because the Sun shines most directly overhead at the equator, the climate is hotter there. Moreover, the North and South Poles are chilly because they receive the least direct sunlight and heat.

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The type of compound represented by the graph at right is a strong acid (option B).

An acid is generally any compound capable of dissociating into its respective constituent ions when in an aqueous solution.

An acid is categorised as strong or weak depending on whether it can dissociate completely or partially. A strong acid dissociates completely in water.

According to this question, HA, when added to water, dissociates into H+ and A- ions, hence, is a strong acid.

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Answer:

Below

Explanation:

For Carbon:

40.002 % * 180.156   = 72.066 gm/mole C     per mole of fructose

For Hydrogen:

6.714 %  * 180.156     = 12.096  gm H

For Oxygen:

53.285% *  180.156  = 95.966 gm of O

Now use periodic table to find mole wts of each

   72.066 / 12.011   = 6    moles of C per mole of fructose   ( wt = 12.011)

   12.096/ 1.008    =  12   moles of  H                                     (wt = 1.008)

    95.966/15.999 = 6     moles of O                                      (wt = 15.999)

C6 H12 O6     is MOLECULAR formula     divide everything by 6

C H2 O     is EMPIRICAL

Hope this answer helps you

Balanced equation 2HC₂H₃O₂ + NaHCO₃ ----->NaCHO + CO₂+ H₂O. Moles of NaHCO₃ is0.02166 moles. The mole ratio of NaHCO₃ to HC₂H₃O₂ is 1:2. is 0.04332 moles. Molarity of vinegar is 4.395 M. Grams of HC₂H₃O₂ is 2.601 g. Percent of acetic acid is 26.07%. If they match calculated percent to to the percent acid listed on the bottle of vinegar, they are the same. If they do not match, they are different.

The problem provides a chemical equation for the reaction between acetic acid and sodium bicarbonate. The balancing the equation is

2HC₂H₃O₂ + NaHCO₃ ----->NaCHO + CO₂+ H₂O

The calculating the number of moles of NaHCO3 required to neutralize the HC₂H₃O₂ in the vinegar.

Moles of NaHCO₃ = Molarity x Volume

= 1.14 M x 0.019 L

= 0.02166 moles

Using stoichiometry to convert moles of NaHCO₃ to moles of HC₂H₃O₂.

From the balanced equation, the mole ratio of NaHCO₃ to HC₂H₃O₂ is 1:2.

So, moles of HC₂H₃O₂ = 2 x 0.02166 moles

= 0.04332 moles

The calculating the molarity of the vinegar.

Molarity of vinegar = Moles of HC₂H₃O₂ / Volume of vinegar

= 0.04332 moles / 0.00986 L

= 4.395 M

The calculating the number of grams of  HC₂H₃O₂ in the vinegar.

Grams of HC₂H₃O₂ = Moles of HC₂H₃O₂ x Molar mass of HC₂H₃O₂

= 0.04332 moles x 60.05 g/mol

= 2.601 g

The calculating the percent of acetic acid in the vinegar.

Percent of acetic acid = (Grams of  HC₂H₃O₂ / Grams of vinegar) x 100

= (2.601 g / (9.86 mL x 1.002 g/mL)) x 100

= 26.07%

Comparing the calculated percent (26.07%)  to the percent acid listed on the bottle of vinegar.  If they match, they are the same. If they do not match, they are different.

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if 13.0 g of nitrogen and 2.00 g of hydrogen are reacted, and all the hydrogen is consumed, 3.73 grams of nitrogen would remain.

Nitrogen is a chemical element with the symbol N and atomic number 7. It is a colorless, odorless, tasteless, and mostly inert diatomic gas at standard temperature and pressure. Nitrogen is the most abundant gas in Earth's atmosphere, making up about 78% of the air we breathe.

Nitrogen is an essential element for life as it is a major component of proteins and nucleic acids (DNA and RNA). It is also a component of many important compounds such as ammonia, nitric acid, and nitrogen oxide. Nitrogen is obtained from the air by a process called fractional distillation or by reacting ammonia with water.

In industry, nitrogen is used in the production of fertilizers, food packaging, and electronics. It is also used to create a controlled atmosphere for welding and in the manufacture of semiconductors.

Although nitrogen is not toxic, it can be dangerous if it displaces oxygen in confined spaces, leading to asphyxiation. Nitrogen gas can also react explosively with other chemicals under certain conditions.

Overall, nitrogen is a crucial element for life and industry with many useful applications, but it must be handled with care and caution to prevent accidents.

The balanced chemical equation for the reaction between nitrogen gas (N2) and hydrogen gas (H2) to form ammonia gas (NH3) is:

N2(g) + 3H2(g) → 2NH3(g)

This equation shows that 1 mole of N2 reacts with 3 moles of H2 to produce 2 moles of NH3.

To determine the mass of nitrogen that would remain if all the hydrogen were consumed, we need to calculate which reactant is limiting, i.e. which reactant would be completely consumed in the reaction.

First, we calculate the number of moles of nitrogen and hydrogen:

Number of moles of N2 = mass of N2 / molar mass of N2

= 13.0 g / 28.02 g/mol

= 0.464 mol

Number of moles of H2 = mass of H2 / molar mass of H2

= 2.00 g / 2.02 g/mol

= 0.992 mol

According to the balanced equation, the stoichiometric ratio of N2 to H2 is 1:3. Therefore, 0.464 mol of N2 requires 1.392 mol of H2 to react completely. Since we only have 0.992 mol of H2, this is the limiting reactant.

Using the stoichiometric ratio, we can calculate the amount of N2 that would react with 0.992 mol of H2:

Number of moles of N2 consumed = 0.992 mol H2 x (1 mol N2 / 3 mol H2)

= 0.331 mol N2

The amount of N2 remaining after the reaction is the initial amount minus the amount consumed:

Number of moles of N2 remaining = 0.464 mol - 0.331 mol

= 0.133 mol

Finally, we can calculate the mass of N2 remaining:

Mass of N2 remaining = number of moles of N2 remaining x molar mass of N2

= 0.133 mol x 28.02 g/mol

= 3.73 g

Therefore, if 13.0 g of nitrogen and 2.00 g of hydrogen are reacted, and all the hydrogen is consumed, 3.73 grams of nitrogen would remain.

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It is most likely Option A: that a chemical change occurred in step 1 and a physical change occurred in step 2.

In step 1, the yellow particles appeared in the liquid, indicating a chemical change. This could be a result of a chemical reaction between the two colorless liquids, or the addition of a reagent that caused a reaction. This change is characterized by the formation of new substances, which are the yellow particles.

In step 2, the colorless liquid was separated from the yellow particles by decantation. Decantation is a physical process that separates immiscible liquids or solid particles from a liquid by allowing them to settle and then carefully pouring off the liquid.

Therefore, This change is characterized by the separation of components of a mixture, no new substances are formed.

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Answer:

Explanation:

The pH of 0.02 M hydrochloric acid is approximately 1.7.

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Answer:

Watson and Crick!

Explanation:

Answer:

23.6 moles

Explanation:

From the question given above, the following data were obtained:

Mass of air = 3.6 Kg

Mass percentage of O₂ = 21%

Number of mole of O₂ =?

Next, we shall convert 3.6 Kg of air to grams (g). This can be obtained as follow:

1 kg = 1000 g

Therefore,

3.6 Kg = 3.6 Kg × 1000 / 1 kg

3.6 Kg = 3600 g

Next, we shall determine the mass of O₂ in the air. This can be obtained as follow:

Mass of air = 3600 g

Mass percentage of O₂ = 21%

Mass of O₂ =?

Mass of O₂ = 21% × 3600

Mass of O₂ = 21/100 × 3600

Mass of O₂ = 756 g

Finally, we shall determine the number of mole of O₂ in the sample of air. This can be obtained as follow:

Mass of O₂ = 756 g

Molar mass of O₂ = 2 × 16 = 32 g/mol

Number of mole of O₂ =?

Mole = mass /Molar mass

Number of mole of O₂ = 756 / 32

Number of mole of O₂ = 23.6 moles

Thus, the number of mole of O₂ in the

sample of air is 23.6 moles

Answer: The gas generated by two antacid tablets has a smaller volume.

Explanation:

Since the antiacid is the limiting reagent, we know that the more tablets there are, the more gas there will be.

This means that there will be more gas generated by the four antiacid tablets when compared to the two antiacid tablets, which gives us that the gas generated by the two antiacid tablets has a smaller volume.

A methane molecule (CH4) is considered symmetrical because it possesses a symmetric structure and exhibits symmetry operations.

Symmetry refers to a balanced arrangement of elements that can be divided into equal parts by a plane, axis, or center. In the case of methane, it exhibits several symmetrical characteristics.

Firstly, methane has a tetrahedral molecular geometry, with the carbon atom at the center and four hydrogen atoms positioned around it. This geometry ensures that the molecule is symmetrical in terms of its spatial arrangement.

Each hydrogen atom is located at one of the vertices of the tetrahedron, forming equal angles and distances with respect to the central carbon atom. This symmetry is maintained regardless of the orientation of the molecule.

Additionally, methane possesses rotational symmetry. It can be rotated around any of the carbon-hydrogen bonds, and the molecule will retain its overall appearance.

The symmetry of methane arises from its molecular structure and the equal distribution of electron density around the central carbon atom. The four hydrogen atoms are bonded to the carbon through sigma bonds, which have a cylindrical symmetry. This balanced arrangement of the atoms contributes to the overall symmetry of the molecule.

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Answer:

\(m_{CaCO_3}=0.465g\)

Explanation:

Hello!

In this case, since the reaction between two aqueous solutions may turn out in the production of a solid precipitate, for potassium carbonate and calcium chloride, calcium carbonate is precipitated out as shown below:

\(CaCl_2(aq)+K_2CO_3(aq)\rightarrow 2KCl(aq)+CaCO_3(s)\)

Now, since the two reactants are in a 1:1 mole ratio, we infer they react in the same proportion, thus we compute the reacting moles, considering the used volumes of those molar solutions:

\(n_{K_2CO_3}=0.0152L*0.306mol/L=0.00465mol\\\\n_{CaCl_2}=0.0170*0.295mol/L=0.00502mol\)

Thus, since just 0.00465 mol out of 0.00502 moles of calcium chloride are consumed, the potassium carbonate is the limiting reactant, therefore the mass of yielded calcium carbonate (molar mass = 100.09 g/mol) is:

\(m_{CaCO_3}=0.00465molK_2CO_3*\frac{1molCaCO_3}{1molK_2CO_3} *\frac{100.09gCaCO_3}{1molCaCO_3}\\\\m_{CaCO_3}=0.465g\)

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Answer:

0.2237 grams of NaOH

Explanation:

To calculate the grams of NaOH dissolved in 23.46 mL of a 0.238 M solution of NaOH, we can use the formula:

mass = molarity x volume x molar mass

where mass is the mass of NaOH dissolved in grams, molarity is the concentration of NaOH in moles per liter, volume is the volume of the solution in liters, and molar mass is the molar mass of NaOH in grams per mole.

First, we need to convert the volume of the solution from milliliters to liters:

volume = 23.46 mL / 1000 mL/L

volume = 0.02346 L

The molar mass of NaOH is 40.00 g/mol.

Now we can plug in the values and solve for mass:

mass = 0.238 M x 0.02346 L x 40.00 g/mol

mass = 0.2237 g

Therefore, there are 0.2237 grams of NaOH dissolved in 23.46 mL of a 0.238 M solution of NaOH.

A fundamental characteristic of an object, its inertia is quantified by its mass, which is a basic indicator of the volume of substance inside the thing.

What does the word "mass" mean?

In science, mass is a method for measuring inertia, a fundamental property of all matter. In essence, it's the resistance of a mass of matter to changing its direction or speed in reaction to the application of a force.

Why is mass important?

The celebration of the Eucharist, which is the main act of worship in the Roman Catholic Church, takes place during mass. The ecclesiastical Latin formula for the congregation's dismissal is where the word "mass" comes from.

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Answer:

31

Explanation: