What volume of a 2.25 M sodium chloride solution will contain 4.58 moles of sodium chloride
(NaCl)?
A. 0.252 L
B. 119 L
C. 5.62 L
D. 0.491 L
E. 2.04 L

Answer:less thaniginal

Explanation:

Explanation:

Rate of reaction can be increased by having more surface area.

Therefore,

Option B is correct✔

Answer:

b

Explanation:

Answer:

Acids and bases can help neutralize each other.

Acids turn litmus paper red, bases turn it blue.

Strong bases can be slippery and slimy feeling.

Acids taste sour, bases taste bitter.

Proteins are made up of amino acids.

Vitamin C is also an acid called ascorbic acid.

Ammonia is a base chemical.

Explanation:

school

I just did this for my class.

Here are 10 facts about acids and bases to help you learn about acids, bases, and pH along with a chart for comparison.

1. Any aqueous (water-based) liquid can be classified as an acid, base, or neutral. Oils and other non-aqueous liquids are not acids or bases.

2. There are different definitions of acids and bases, but acids can accept an electron pair or donate a hydrogen ion or a proton in a chemical reaction, while bases can donate an electron pair or accept hydrogen or a proton.

3. Acids and bases are characterized as strong or weak. A strong acid or strong base completely dissociates into its ions in water. If the compound does not completely dissociate, it's a weak acid or base. How corrosive acid or a base does not relate to its strength.

4. The pH scale is a measure of the acidity or alkalinity (basicity) or a solution. The scale runs from 0 to 14, with acids having a pH less than 7, 7 being neutral, and bases having a pH higher than 7.

5. Acids and bases react with each other in what is called a neutralization reaction. The reaction produces salt and water and leaves the solution closer to a neutral pH than before.

6. One common test of whether an unknown is an acid or a base is to wet litmus paper with it. Litmus paper is a paper treated with an extract from a certain lichen that changes color according to pH. Acids turn litmus paper red, while bases turn litmus paper blue. A neutral chemical won't change the paper's color.

7. Because they separate into ions in water, both acids and bases conduct electricity.

8. While you can't tell whether a solution is an acid or a base by looking at it, taste and touch may be used to tell them apart. However, since both acids and bases can be corrosive, you shouldn't test chemicals by tasting or touching them! You can get a chemical burn from both acids and bases. Acids tend to taste sour and feel drying or astringent, while bases taste bitter and feel slippery or soapy. Examples of household acids and bases you can test are vinegar (weak acetic acid) and baking soda solution (diluted sodium bicarbonate -- a base).

9. Acids and bases are important in the human body. For example, the stomach secretes hydrochloric acid, HCl, to digest food. The pancreas secretes a fluid rich in the base bicarbonate to neutralize stomach acid before it reaches the small intestine.

10. Acids and bases react with metals. Acids release hydrogen gas when reacted with metals. Sometimes hydrogen gas is released when a base reacts with a metal, such as reacting sodium hydroxide (NaOH) and zinc. Another typical reaction between a base and a metal is a double displacement reaction, which may produce a precipitate metal hydroxide.

Answer:

B

Explanation:

Answer: The \(R_f\) value is 0.664

Explanation:

Distance travelled by solvent front = (7.7-1.45)cm = 6.25 cm

Distance travelled by unknown = (5.6-1.45) cm = 4.15 cm

 The retention factor or the \(R_f\) value is defined as the ratio of distance traveled by the unknown to the distance traveled by the solvent front.

\(R_f=\frac{\text {distance travelled by unknown}}{\text {distance travelled by solvent}}\)

\(R_f=\frac{4.15}{6.25}=0.664\)

Thus the \(R_f\) value is 0.664

To find moles when given the molar mass, you can use the concept of molar mass as a conversion factor.Molar mass represents the mass of one mole of a substance, expressed in grams per mole (g/mol).

To calculate moles, divide the given mass of the substance by its molar mass. The equation is:

moles = mass / molar mass

For example, if you have 56 grams of carbon dioxide (CO2) and want to find the number of moles, you need to know the molar mass of CO2, which is approximately 44 g/mol. Using the equation above:

moles = 56 g / 44 g/mol

moles ≈ 1.27 mol

Therefore, there are approximately 1.27 moles of carbon dioxide in 56 grams.

For more such questions on molar mass

https://brainly.com/question/29424807

#SPJ8

The concept molarity is an important method which is used to calculate the concentration of a solution. It is mainly employed to calculate the concentration of a binary solution. Here the volume of  barium hydroxide is 21.28 mL.

Molarity of a solution is defined as the number of moles of the solute present per litre of the solution. It is represented as 'M' and its unit is mol/L.

The equation connecting molarity and volume of two solution is given as:

M₁V₁ = M₂V₂

V₁  = M₂V₂ / M₁

0.1002 × 25.00 / 0.1177 = 21.28 mL

To know more about molarity, visit;

https://brainly.com/question/29350548

#SPJ1

Answer:

1.) There are 6 carbons in the longest possible parent chain (hex-). Since there is a double bond, this is an alkene.  The lowest possible carbon the double bond consists of is the 2nd carbon. There is also a methyl group on the 2nd carbon. All together, this makes the structure: 2-methyl-2-hexene.

2.) There are 9 carbons in the longest possible parent chain (non-). The lowest possible carbons the methyl groups are on are the 3rd and 5th carbons. The lowest possible carbon the ethyl group is located on is the 4th carbon. Remember, branches are listed alphabetically. All together, this makes the structure: 4-ethyl-3,5-dimethylnonane.

3.) There are 7 carbons in the longest possible parent chain (hept-). There is a triple bond, making this an alkyne. The lowest possible carbon the triple bond consists of is the 2nd carbon. The lowest possible carbon the methyl group is on is the 4th carbon. All together, this makes the structure: 4-methyl-2-heptyne.

4.) There are 10 carbons in the longest possible parent chain (dec-). The lowest possible carbon the propyl group is on is the 5th carbon. All together, this structure is: 5-propyldecane.

5.) There are 4 carbons in the longest possible parent chain (but-). The lowest possible carbon the methyl group is on is the 2nd carbon. All together, this makes the structure: 2-methylbutane.

6.) There are 5 carbons in the longest possible parent chain (pent-). There is a double bond, making the molecule an alkene. The lowest possible carbon the double bond consists of is the 2nd carbon. The lowest possible carbon the methyl group is on is the 2nd carbon. All together, this makes the structure: 2-methyl-2-pentene.

Answer:

No additional particle was produced during the decay.

Explanation:

The equation of decay is given as;

¹⁰₆C  + ⁰₋₁ e → ¹⁰₅B + x

To identify x, we have to calculate its atomic and mass number.

In the reactants side;

Atomic Number = 6 + (-1) = 5

Mass number = 10 + 0 = 10

In the products side;

Atomic Number = 5 + x

Mass Number = 10 + x

Generally, reactant = product

Atomic Number;

5 = 5 + x

x = 5 - 5 = 0

Mass Number;

10 = 10 + x

x = 10 - 10 = 0

This means no additional particle was produced during the decay.

The equation C2H4(g) + H2(g) + C2H6(g) → Caco3(s) + Cao(s) + CO2(g) shows an increase in entropy due to the formation of a gas as a product. Option A

In this equation, the reactants on the left-hand side consist of gases (C2H4 and H2), while the products on the right-hand side include a solid (Caco3) and a gas (CO2).

When a reaction involves a change from gaseous to solid or liquid states, there is typically a decrease in entropy because the particles become more ordered and constrained in the solid or liquid phase.

Conversely, when a reaction involves the formation of gases, there is generally an increase in entropy because gases have higher degrees of molecular motion and greater freedom of movement compared to solids or liquids.

In the given equation, the reactants include three gaseous compounds (C2H4, H2, and C2H6), and one of the products is a gas (CO2). Therefore, the overall entropy of the system increases during this reaction.

The equation Fe(s) + S(s) → FeS(s) does not show an increase in entropy. Both the reactants (Fe and S) and the product (FeS) are solids. Since solids have lower entropy compared to gases or liquids, the entropy of the system does not increase in this reaction. Option A

For more such questions on entropy visit:

https://brainly.com/question/30481619

#SPJ8

The hydrogen-rich fuel cell offers advantages in terms of efficiency, environmental impact, operating time, refueling speed, weight, size, and lifespan when compared to conventional electrochemical cells like the lead-acid battery.

The hydrogen-rich fuel cell offers several advantages over conventional electrochemical cells like the lead-acid battery. Here are some of the key advantages:

1. Higher Efficiency: Hydrogen fuel cells have higher energy conversion efficiencies compared to lead-acid batteries. Fuel cells can convert chemical energy directly into electrical energy with minimal loss, while lead-acid batteries have inherent energy losses due to factors such as internal resistance and heat dissipation.

2. Clean and Environmentally Friendly: Hydrogen fuel cells produce electricity through the reaction of hydrogen and oxygen, with water being the only byproduct. They do not produce harmful emissions or contribute to air pollution, making them a cleaner and more sustainable power source compared to lead-acid batteries, which require the use of chemicals like sulfuric acid.

3. Longer Operating Time: Fuel cells have longer operating times compared to lead-acid batteries. Lead-acid batteries have a limited capacity and need to be recharged frequently, while fuel cells can continuously generate electricity as long as there is a supply of hydrogen.

4. Faster Refueling: Refueling a fuel cell is faster compared to recharging a lead-acid battery. Fuel cells can be refueled by replenishing the hydrogen supply, which can be done relatively quickly. In contrast, lead-acid batteries require a longer time to recharge, typically hours, depending on the battery's capacity and charging rate.

5. Lighter Weight and Compact Size: Hydrogen fuel cells have a higher energy density compared to lead-acid batteries, meaning they can store more energy in a smaller and lighter package. This makes fuel cells more suitable for applications where weight and space are critical, such as in portable devices or electric vehicles.

6. Longer Lifespan: Fuel cells generally have a longer lifespan compared to lead-acid batteries. Lead-acid batteries can experience degradation over time due to factors like sulfation, which can reduce their overall capacity and lifespan. Fuel cells, on the other hand, can provide consistent performance over an extended period with proper maintenance.

These advantages make fuel cells a promising technology for various applications, including transportation, stationary power generation, and portable electronics.

for more questions on fuel cell

https://brainly.com/question/14122421

#SPJ8

1

1

The general molecular formula for phenol is C6H5OH. It is an aromatic organic compound with a hydroxyl group bonded to a carbon atom of a cyclic structure. The ring structure has alternate double and single bonds. The formula of phenol is C6H5OH. Benzene has the formula C6H6. It is a hexagonal ring of six carbon atoms bonded with alternate single and double bonds. Each carbon atom in benzene has a bond with a hydrogen atom. In phenol, a hydroxyl group replaces one of the hydrogen atoms.

The reaction of CuCl2, HNO3, and AgNO3 is a redox reaction. In a redox reaction, one substance loses electrons and is oxidized, while another substance gains electrons and is reduced. In this reaction, CuCl2 is oxidized to Cu2+, HNO3 is reduced to NO, and AgNO3 is reduced to Ag.

The balanced equation for the reaction is:

CuCl2 + 2HNO3 + 2AgNO3 → Cu2+ + 2NO + 2AgCl

The products of the reaction are copper(II) ions, nitrogen monoxide gas, and silver chloride precipitate.

Here are some of the properties of phenol:

Phenol is a white crystalline solid that is soluble in water.

Phenol has a strong, characteristic odor.

Phenol is a mild acid.

Phenol is toxic and can cause burns to the skin and eyes.

Phenol is used in a variety of products, including disinfectants, antiseptics, and plastics.

Answer

The moles of sodium needed to produce 2.83 grams of sodium oxide = 0.0914 moles.

Explanation

Given:

Mass of sodium oxide produced = 2.83 grams

What to find:

The moles of sodium needed to produce 2.83 grams of sodium oxide.

Step-by-step solution:

Step 1: Step 2: Write a balance equation for the reaction.

4Na + O₂ -------> 2Na₂O

Step 2: Convert 2.83 grams sodium oxide to mole using the mole formula.

The molar mass of Na2O = 61.9789 g/mol

So, putting mass = 2.83 g and molar mass = 61.9798 g/mol, we have;

Step 3: Calculate the mole of sodium needed using the balance equation and the mole of sodium oxide produced.

From the balanced equation;

4 moles Na produces 2 moles Na₂O

So, the moles of Na needed to produce 0.0457 moles Na₂O will be

The moles of sodium needed to produce 2.83 grams of sodium oxide = 0.0914 moles

The volume occupied at 25 °C. Remember to convert between °C and K. V2 = 3.311 L is the correct answer.

What is volume?

Volume is a measure of the amount of space occupied by an object, or the amount of matter contained within it. It is measured in units such as cubic metres, cubic centimetres, litres, millilitres, etc. Volume is a three-dimensional concept, meaning that it requires three measurements to be taken in order to accurately measure the amount of space an object occupies. The volume of a solid object can be determined by applying the formula V = l x w x h, where l is the length, w is the width, and h is the height of the object. For a liquid or gas, the volume is calculated by measuring its mass and the density of the substance. Volume can also be used to describe the total amount of space something occupies, such as the volume of a room or the volume of a storage container.

Temperature and Volume equation

Given,

The volume at -12°C = 2.90L

Temperature, T1 = -12°C

= (-12°C + 273)

= 261K

And, Volume at 25°C = ?

(25°C + 273)K

= 298K

Now, by using this equation:-

V1/T1 = V2/T2

V2 = V1 x T2/T1

V2 = 2.90L x 298K/261K

V2 = 3.311L

Hence, The volume at  25°C will be 3.311L

To learn more about Temperature and Volume equation

https://brainly.com/question/9956672

#SPJ1

Step 1 - Finding the relation in moles in the reaction equation

As we have previously seen working on a similar problem, the bigger numbers that come before the formula of the substance expresses a proportion in moles between all the reactants and the products.

The reaction given in this exercise is:

Note that 2 moles of K react with 2 moles of H2O, producing 1 mole of H2 and 2 moles of KOH.

Step 2 - Converting a relation in moles to a relation in grams

We can convert this relation in moles to a relation in grams by multiplying each number of moles by the molar mass of each substance. The molar masses are:

Converting to grams:

We can state thus that 78g of K react with 36g of water, producing 2g of H2 and 112g of KOH. This is a fixed proportion, like a cake recipe.

Step 3 - Using the information to answer the exercise

1) Note that 2 moles of K produces 2 moles of KOH. Therefore, we would need exactly 2 moles of K.

2) Note that 2 moles of K, as we have previously calculated in step 2, corresponds to 78 g.

3) Note that 2 moles of K produces 1 mole of H2. Since this is a fixed proportion, we can set the following relation:

It would be produced thus 1.5 moles of H2.

4) As we have seen in 3), we would produce 1.5 moles of H2. Since its molar mass is 2g/mol, we would produce, in grams:

3g of H2 would be produced.

5) Note that 2 moles of H2O produce 1 mole of H2. In grams, this corresponds to 36g of water produce 2g of H2.

Answer:

Note that 2 moles of H2O produce 1 mole of H2. In grams, this corresponds to 36g of water produce 2g of H2

Explanation:

Solution :

\($\text{Helium and nitrogen}$\) gases are contained in a conduit \($7 \ mm$\) is diameter and \($0.08 \ m$\) long at 317 K (44°C) and a uniform constant pressure of 1 atm.

Given :

Diameter, D = 7 mm

L = 0.1 m

T = 317 K

\($P_{A1}=0.075 \ atm $\)

\($P_{A2}=0.03 \ atm $\)

P = 1 atm

From, table

\($D_{AB}= 0.687 \times 10^{-4} \ m/s$\)

We know :

\($J_{A}^* = D_{AB} \frac{d_{CA}}{dz}$\)

\($J_A^*=\frac{(0.687 \times 10^{-4})(0.075-0.03)(\frac{101.32}{1 \ atm}) }{8.319 \times 298 \times 0.10}$\)

    = \($1.26 \times 10^{-6} \ kgmol/m^r s$\)

\($P_{B1} = P-P_{A1}$\)

      = 1 - 0.075

      = 0.925 atm

\($P_{B2} = P-P_{A2}$\)

      = 1 - 0.03

      = 0.97 atm

\($J_B^*=D_{AB}\frac{(P_{B1} \times P_{B2})}{RT( \Delta z)}$\)

    \($=\frac{0.687 \times 10^{-4}(0.925-0.97)(\frac{101.32}{1 \ atm})}{8.314 \times 298 \times 0.1}$\)

    \($=-1.26 \times 10^{-6} \ kg \ mol /m^r s$\)

Partial pressure of helium  \($=\frac{0.075+0.03}{2}$\)

                                             = 0.0525 atm

The following which is not a safety concern associated with the lab to determine the molar volume of a gas include the following below:

Flammable gases are explosive when they are mixed with air or oxygen in the right proportions.

This is therefore the reason why it is best to store them in a safe environment so that a fire incident doesn't occur. The valves should also be tightly closed so nas to prevent the escape of gases intyo the atmposphere.

Read more about  Flammable gases here https://brainly.com/question/15848712

#SPJ1

However, it is commonly approximated as 3.14159.

An irrational number is a number that cannot be expressed as a simple fraction or ratio of two integers. It is a non-repeating, non-terminating decimal. Examples of irrational numbers include pi (π), the square root of 2 (√2), and the golden ratio (∅).

In mathematics, a terminating decimal is a decimal number that has a finite number of digits after the decimal point, i.e., the decimal representation ends in a finite number of zeroes. For example, 0.75, 2.0, and 0.0625 are terminating decimals.

To know more about irrational visit :

https://brainly.com/question/15837135

#SPJ1

Writing and balancing complex half-reactions in acidic solutions involves a systematic approach. Here are the general steps to follow:

Identify the oxidation and reduction half-reactions: Determine which species is being oxidized (losing electrons) and which is being reduced (gaining electrons).

Balance the atoms: Begin by balancing all atoms except hydrogen and oxygen in each half-reaction.

Balance the charges: Add electrons (e-) to one side of each half-reaction to balance the charges.

Balance the oxygen atoms: Add water (H2O) to the side of the equation that lacks oxygen atoms.

Balance the hydrogen atoms: Add hydrogen ions (H+) to the side of the equation that lacks hydrogen atoms. Keep in mind that the solution is acidic.

Balance the charges: Adjust the number of electrons (e-) on each side of the equation to ensure that the charges are balanced.

Multiply the half-reactions: Multiply each half-reaction by an appropriate factor so that the number of electrons gained and lost are equal.

Combine the half-reactions: Add the two balanced half-reactions together and cancel out common terms on both sides of the equation.

By following these steps, you can effectively write and balance complex half-reactions in acidic solutions, ensuring that the overall reaction is balanced in terms of both atoms and charges.

Learn more about Writing and balancing here:

https://brainly.com/question/27192586

#SPJ11

If HCl was added to the evaporating dish to react with NaHCO₃ than needed, the actual yield of NaCl be affected is  0.0014g

Evaporation process by which an element or compound transitions from its liquid state to its gaseous state below the temperature at which it boils

Here given data is  HCl was added to the evaporating dish to react with NaHCO₃

We have to find actual yield of NaCl be affected = ?

0.0823 mol NaCl/56.44 g = 0.0014g

Then the actual yeild is 0.0014g

Know more about actual yeild

https://brainly.com/question/10455459

#SPJ1

Answer:

Explanation:

Here, we want to get the percentage by mass of calcium carbonate in the limestone

We start by writing an equation of chemical reaction

The reaction involves calcium carbonate reacting with hydrochloric acid to give calcium chloride, carbon dioxide and water

We have the equation as follows:

Now, let us work with the extra information

16.89 g of calcium chloride are produced

Let us get the number of moles of calcium chloride produced

We can get that by dividing the mass by the molar mass of calcium chloride

The molar mass of calcium chloride is 111 g/mol

So, the number of moles will be:

From the equation,

1 mole of calcite gave 1 mole of calcium chloride, then 0.1522 mole of calcium chloride was produced by 0.1522 mole of calcite

To get the mass of calcite that produced this, we have to multipply the number of moles by the molar mass of calcite

The molar mass of calcite is 100 g/mol

That means the mass of calcite that produced the calcium chloride will be:

What this mean is that 15.22 g of calcite produced the given mass of calcium chloride

The percentage by mass of calcite in the limestone will be:

Answer:

Ba(NO₃)₂(s) ⇒ BaO(s) + N₂(g) + 3 O₂(g)

Explanation:

Let's consider the unbalanced equation for the decomposition reaction of solid barium nitrate.

Ba(NO₃)₂(s) ⇒ BaO(s) + N₂(g) + O₂(g)

We can see that Ba atoms and N atoms are balanced, but we have 6 O atoms to the left side and 2 O atoms to the right. We can get the balanced equation by multiplying O₂(g) by 3.

Ba(NO₃)₂(s) ⇒ BaO(s) + N₂(g) + 3 O₂(g)

Answer:

Silicon????

Explanation:

I searched your question and it gave me that. I hope it helps. If not sorry!

Explanation:

CH4+8/2Cl2—>CCl4+4HCl

that is,1molecule of methane+8/2 molecules of dichlorine—>1molecule of carbon tetrachloride+4molecules of hydrogen chloride

O-dichlorobenzene is the isomer of dichlorobenzene which has highest boiling point.

The boiling point of o-dichlorobenzene is greater than the boiling point of m -and p-dichlorobenzenes due to its greater polar nature. The boiling point order is: o−>m−>p− dichlorobenzene.

What is boiling point?

To know more about boiling point, click the link given below:

https://brainly.com/question/28986258

#SPJ4

Answer:

Atmospheric Pressure:

- It is the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes.

Explanation:

Hope this helps

Reaction 1 is the one that is different because there is only one product (option C).

In a reaction, there are two main components:

Moreover, a reaction can include two or more reactants as well as two or more products depending on the substances involved. Let's analyze reaction 1:

This means in this reaction there is only one product. This does not occur in reactions 2, 3, and 4 because in these there are two products.

Learn more about chemical reactions in: https://brainly.com/question/16416932