write the electron configuration for the co2 ion. select the correct answer below: 1s22s22p63s23p6 1s22s22p63s23p63d7 1s22s22p63s23p64s23d5 1s22s22p63s23p64s23d7

Answer:

volume of 200mL, density shows it weighs .789 grams for every mL.  .789*200= 157.8 grams

Explanation:

The percent recovery of acetanilide recrystallization is: 75.5%,

the physical appearance of the purified acetanilide was: white, fine-grained crystals

and the melting point range of the purified acetanilide was: 114.6-116.9 °C

Explanation:

The percent recovery of acetanilide recrystallization is as follows: Initial weight of acetanilide = 2.245 g

Weight of filter paper = 0.343 g

Weight of filter paper + purified acetanilide = 2.633 g

Weight of purified acetanilide = (2.633 - 0.343) g = 2.290 g

Percent recovery = (Weight of purified acetanilide / Initial weight of acetanilide) × 100= (2.290 / 3.032) × 100 = 75.5%

Since the percent recovery is greater than 60%, we can say that the acetanilide recrystallization was successful at purifying the acetanilide.

The physical appearance of the purified acetanilide was white, fine-grained crystals, and the melting point range of the purified acetanilide was 114.6-116.9 °C. Both the physical appearance and melting point range confirm that the acetanilide was purified through the recrystallization process.

To know more about recrystallization refer here:

https://brainly.com/question/15703840#

#SPJ11

Number of (NH4)2SO4 molecules = 2.16 × 10^25 molecules / 2 = 1.08 × 10^25 (NH4)2SO4 molecules. There are approximately 1.08 × 10^25 molecules of ammonium sulfate in 35.8 moles of (NH4)2SO4.

To determine the number of molecules in 35.8 moles of ammonium sulfate ((NH4)2SO4), we need to use Avogadro's number, which states that there are 6.022 × 10^23 particles (atoms, molecules, or ions) in one mole of any substance.

The molecular formula of ammonium sulfate indicates that there are two ammonium ions (NH4+) and one sulfate ion (SO4^2-) in each molecule.

To calculate the number of molecules in 35.8 moles of (NH4)2SO4, we can follow these steps:

Determine the number of moles of (NH4)2SO4 by multiplying the given value by Avogadro's number:

Number of moles = 35.8 moles × (6.022 × 10^23 molecules/mole) = 2.16 × 10^25 molecules

Since each molecule of (NH4)2SO4 contains one ammonium ion and one sulfate ion, the number of molecules can be divided by two to obtain the number of (NH4)2SO4 molecules:

Number of (NH4)2SO4 molecules = 2.16 × 10^25 molecules / 2 = 1.08 × 10^25 (NH4)2SO4 molecules

Therefore, there are approximately 1.08 × 10^25 molecules of ammonium sulfate in 35.8 moles of (NH4)2SO4.

For more question on molecules

https://brainly.com/question/24191825

#SPJ8

Answer:

Potassium Chloride

Explanation:

this is a compund and K is potassium and when u add the chlorine it is gonna have the ide

Answer: Potassium Chloride

Explanation: It is a binary compound, meaning that it only has 2 compounds in the equation.

Answer: A stopwatch

Explanation:

You don’t needed

A student requires all of them except a balance. The correct option is A.

Students calculate the volume of various rods that have the same mass using the water displacement method. Each rod's density is calculated, and the distinctive densities of each material are used to distinguish the five rods.

Then, to explain why various rods have varied densities, students think about the connection between the mass, size, and arrangement of atoms. The periodic table will be briefly introduced to the class.

The volume displacement method is often used to determine the volume of an object with an irregular shape. This technique involves submerging an object into a known amount of water; as a result, the water level will rise.

Therefore, A student requires all of them except a balance. The correct option is A.

To learn more about displacement, refer to the link:

https://brainly.com/question/11934397

#SPJ5

1.0 M NaOH has the highest concentration of dissolved solutes and thus the highest boiling point.

The boiling point of an aqueous solution is determined by the concentration of dissolved solutes in the solution. The higher the concentration of solutes, the higher the boiling point of the solution. The boiling point of an aqueous solution of 1.0 M NaOH is approximately 101.5°C. This is due to the fact that, when an ionic compound is dissolved in water, the ions become surrounded by water molecules and the solution becomes more dense. As a result, the boiling point of the water is increased as the number of molecules per unit volume increases.

leqarn more about boiling point Refer:brainly.com/question/2153588

#SPJ4

Answer:

true/ correct

Explanation:

The arrow in a chemical equation is an important component as it indicates the direction of the chemical reaction. This direction is from left to right, which means that the reactants are transformed into the products. The reactants are placed on the left side of the equation, and the products are placed on the right side of the equation.

A chemical equation is a symbolic representation of a chemical reaction. It includes the reactants on the left side of the equation and the products on the right side, separated by an arrow indicating the direction of the reaction. The arrow represents the conversion of the reactants into the products. It is important to note that the arrow only represents the direction of the reaction, not the speed or rate of the reaction. The speed of the reaction can be influenced by various factors, such as temperature, pressure, and catalysts.

In a chemical equation, the arrow (indicating a reaction) points to the right. This arrow represents the direction of the reaction, with the reactants on the left side of the arrow and the products on the right side. A chemical equation shows a chemical reaction occurring between reactants and forming products. The arrow in the equation points to the right, separating the reactants from the products, and symbolizing the conversion of reactants into products. The reactants are written on the left side of the arrow, and the products are written on the right side. This convention helps to easily understand the reaction taking place and the substances involved.

To know more about reaction visit:

https://brainly.com/question/28984750

#SPJ11

Answer:

C. the same amount of energy as

Explanation:

Firstly, a chemical reaction can either absorb energy from its surroundings to occur or release energy into its surroundings as a product. The former and latter descriptions are called ENDOTHERMIC and EXOTHERMIC reactions respectively. An exothermic reaction is that which transfers energy, in form of heat, to its surroundings while an Endothermic reaction is that which absorbs energy (heat) from its surroundings.

However, a reversible reaction is that reaction in which the formation of products from reactants and reformation of the reactants from products occur simultaneously. Hence, the products of a reversible reaction can become the reactants and move in the opposite direction. For example:

Reversible reaction: A + B ⇆ C + D means;

A + B → C + D and;

C + D → A + B

In a case whereby the opposite reactions consist of an endothermic and exothermic reactions, the endothermic reaction absorbs the same amount of energy as the exothermic reaction releases.

According to the law of conservation of energy, no energy is lost during a reversible reaction. Hence, in order to achieve an equilibrium, the amount of energy absorbed by the endothermic reaction is the same as the amount of energy released in the opposite exothermic reaction.

All three rock types weather when they are uplifted to the Earth’s surface, forming sediments that cover the Earth’s surface.

Answer:

All three rock types weather when they are uplifted to the Earth’s surface, forming sediments that cover the Earth’s surface.

hope this helps!!

Answer:

According to Boyle's Law, an inverse relationship exists between pressure and volume. ... The relationship for Boyle's Law can be expressed as follows: P1V1 = P2V2, where P1 and V1 are the initial pressure and volume values, and P2 and V2 are the values of the pressure and volume of the gas after change.  

Hope that helps! :)

-Aphrodite

Explanation:

The temperature and pressure are both 0.00 °C at STP. When temperature is maintained constant, a gas's volume and pressure are directly inversely related. Boyle's Law is the name for this.

In order to determine the volume of the gas at STP, divide the pressure of 780.0 mm Hg by the pressure of 760.0 mm Hg and multiply the result by the volume of 350.0 mL at the specified circumstances. As a result, (780.0/760.0)*350.0 = 358.3 mL is the volume of the gas at STP.

The fall in pressure has resulted in a modest rise in the gas's volume. This is due to Boyle's Law, which states that the pressure is inversely proportional to the volume while the temperature is maintained constant.

Learn more about  volume at:

https://brainly.com/question/1578538

#SPJ1

3-ethyl-2.4-dimethyl-octanoic acid

Answer: 1. 3.23 m

2. 32.4

3. B  adding solvent  and C  removing solute

Explanation:

1. Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent

\(Molality=\frac{n}{W_s}\)

where,

n = moles of solute

\(W_s\) = weight of solvent

Now put all the given values in the formula of molality, we get

\(Molality=\frac{43.6mol}{13.5kg}=3.23mol/kg\)

2. Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

\(Molarity=\frac{n}{V_s}\)

where,

n = moles of solute

\(V_s\) = volume of solution in L

\(3.4=\frac{n}{9.54}\)

\(n=32.4\)

Therefore, the moles of \(Na_2CO_3\) is 32.4

3. Molarity can be decreased by decreasing the moles of solute and by increasing the volume of solution.

Thus adding solvent  and removing solute will decrease the molarity.

Answer:

No experiment is a failure, because anytime you mess up, you learn from your mistakes and when you try the experiment again you can fix what you messed up on last time.

All of the above forces (ionic interactions, H-bonding, van der Waals forces, metal ions, and disulfide bonds) play a role in stabilizing the 3-dimensional structure of proteins. Thus, the correct answer is Choice 6 of 6: all of the above.

Ionic interactions occur between positively and negatively charged amino acid residues, which helps to maintain the overall charge balance of the protein. H-bonding involves the sharing of electrons between atoms, and helps to hold the protein's secondary and tertiary structures in place. Van der Waals forces are relatively weak interactions between atoms, but they can contribute to the stability of the protein by helping to hold the atoms in place. Metal ions can also play a role in stabilizing the protein by binding to specific amino acid residues. Disulfide bonds form between cysteine residues and help to hold the protein's tertiary structure in place.

Learn more about protein 3-dimensional here: brainly.com/question/5684610

#SPJ4

Individuals with a strong family history of bipolar disorder: If there is a strong genetic predisposition to bipolar disorder within a family, lithium may be prescribed as a preventive measure to reduce the risk of developing the condition or to manage symptoms in its early stages.

Determining who is most likely to benefit from the use of lithium requires more context about the individuals in question. Lithium is primarily used as a medication to treat certain mental health conditions, particularly bipolar disorder. It helps stabilize mood, reduce the frequency and severity of manic and depressive episodes, and prevent relapses.Given this information, individuals who may benefit from the use of lithium include:Individuals diagnosed with bipolar disorder: Lithium is a first-line treatment for bipolar disorder and has been shown to be effective in managing mood swings associated with the condition.Individuals with a history of manic episodes: Lithium can help control and prevent future manic episodes, providing stability and reducing the risk of impulsive and risky behaviors.Individuals who have not responded well to other medications: In cases where other medications have been ineffective or have caused undesirable side effects, lithium may be considered as an alternative treatment option.It is important to note that the decision to use lithium should be made by a qualified healthcare professional based on a thorough evaluation of the individual's specific condition, symptoms, medical history, and other relevant factors.

for more such questions  bipolar

https://brainly.com/question/13208888

#SPJ11

76 grams of potassium chloride will not dissolve in 100 grams of water at 20°C.

The solubility of potassium chloride in water at 20°C is approximately 34 grams per 100 grams of water.

So, if 100 grams of water can dissolve 34 grams of potassium chloride, then the maximum amount of potassium chloride that can be dissolved in 100 grams of water at 20°C is 34 grams.

Therefore, the amount of potassium chloride that will not dissolve in 100 grams of water at 20°C is:

110 grams - 34 grams = 76 grams

Learn more about solubility here: https://brainly.com/question/23946616

#SPJ1

Answer:

2pounds

Explanation:

Given parameters:

Weight of Pedro's book  = \(\frac{19}{4}\) pounds

Weight of Blanca's book  = \(\frac{17}{7}\) pounds

Unknown:

How much more does Pedro's book weigh more than Bianca's book ?

Solution:

To Solve this problem, let us convert the fractions to decimal;

   Weight of Pedro's book  = 4.75 pounds

   Weight of Bianca's book  = 2.43 pounds

Differences  = 4.75pounds - 2.43 pounds

                     = 2.32 pounds

Estimating gives 2pounds

Answer:

NH3

Explanation:

The formula for ammonia gas is NH3. Its appearance is a colorless gas.

Ammonia gas is formed by the balanced chemical reaction between nitrogen and hydrogen elements. The balanced chemical equation for the formation of ammonia gas is as follows:

                       N2+3H => 2NH3

So, Nitrogen and Hydrogen are present in the ration of 2:6 or 1:3.

Answer:

lol

Explanation: lol

Answer: approximately 18.75 mL of 3.0 M HNO₂ solution can be completely neutralized by 75 mL of 1.5 M Mg(OH)₂ solution.

Explanation:

To determine the volume of 3.0 M HNO₂ solution that can be neutralized by 75 mL of 1.5 M Mg(OH)₂ solution, we can set up an equation based on the stoichiometry of the balanced chemical equation.

The balanced chemical equation for the neutralization reaction between HNO₂ and Mg(OH)₂ is:

2 HNO₂ + Mg(OH)₂ → Mg(NO₂)₂ + 2 H₂O

From the equation, we can see that it takes two moles of HNO₂ to react with one mole of Mg(OH)₂.

First, let's calculate the number of moles of Mg(OH)₂ present in 75 mL of 1.5 M solution:

Number of moles of Mg(OH)₂ = Volume (in L) × Concentration (in mol/L)

= 75 mL × (1 L / 1000 mL) × 1.5 mol/L

= 0.1125 mol

Since the stoichiometry ratio is 2:1 (HNO₂:Mg(OH)₂), we can conclude that 0.1125 moles of Mg(OH)₂ can neutralize 0.1125/2 = 0.05625 moles of HNO₂.

Now, let's determine the volume of 3.0 M HNO₂ required to contain 0.05625 moles:

Volume (in L) = Number of moles / Concentration (in mol/L)

= 0.05625 mol / 3.0 mol/L

≈ 0.01875 L

Finally, we convert the volume from liters to milliliters:

Volume (in mL) = Volume (in L) × 1000

≈ 0.01875 L × 1000

≈ 18.75 mL

Answer:

Solid, Liquid, and Gas!

Explanation:

The equilibrium constant of the second reaction is 2.0 * 10^-3.

Let us recall the the equilibrium constant shows the extent to which reactants are converted into products in a reaction. A large positive value of the equilibrium constant shows that most of the reactants is converted into products.

Now we can see that the second reaction is obtained when the first reaction is halved and inverted. This now means that we can write;

K2 = 1/K1^1/2

K2 = 1/√K1

K2 = 1/(2.5 * 10^5)

K2 = 2.0 * 10^-3

Learn more about equilibrium constant:https://brainly.com/question/10038290

#SPJ1

C. they may have a positive or negative charge

Acid A is 10^4 = 10000 times stronger than B. This istrue if acid A has a pKa of 5 compared acid B with Pka of 9.

Acid strength is quantified by the acid dissociation constant (Ka). The acid is more potent the higher the value. A higher pka indicates lower acidity. Therefore, a weaker acid results from a greater pKa and a smaller Ka. A weaker acid is one with a higher pKa.

Since pKa = -log10(Ka), an acid is 10 times stronger for each pKa value of 1 below another. Acid A is therefore 10^4 = 10000 times stronger than acid B.

Here is another question with an answer similar to this about Acid strength: https://brainly.com/question/3223615

#SPJ4

When 468.7 g of gasoline (isooctane) undergoes combustion, 32.8 moles of CO₂ are released.

Combustion is a chemical reaction that occurs when a substance reacts with oxygen, usually in the form of a gas, producing heat and often light. It is a type of exothermic reaction characterized by a rapid release of energy in the form of heat and light.

During combustion, the substance undergoing combustion, known as the fuel, combines with oxygen in a process called oxidation. The reaction releases energy in the form of heat and light, and the products of combustion are typically carbon dioxide and water. In some cases, combustion may also produce other byproducts such as carbon monoxide, nitrogen oxides (NOx), and particulate matter.

The balanced equation for the combustion of isooctane can be represented as:

2 C₈H₁₈ + 25 O₂ → 16 CO₂ + 18 H₂O

From the equation, 2 moles of isooctane burned, 16 moles of CO₂ are produced.

Molar mass of isooctane (C₈H₁₈) = 8(12.01 g/mol) + 18(1.01 g/mol) = 114.22 g/mol

Number of moles of isooctane = mass / molar mass = 468.7 g / 114.22 g/mol

Number of moles of CO₂ = (Number of moles of isooctane) × (16 moles of CO₂ / 2 moles of isooctane)

Number of moles of CO₂ = (468.7 g / 114.22 g/mol) × (16 mol CO₂ / 2 mol isooctane)

Number of moles of isooctane = 468.7 g / 114.22 g/mol = 4.10 mol

Number of moles of CO₂ = (4.10 mol isooctane) × (16 mol CO₂ / 2 mol isooctane)

= 32.8 mol CO₂

Learn more about Combustion, here:

https://brainly.com/question/31123826

#SPJ4

Answer:

29

Explanation:

Copper is a chemical element with the symbol Cu and atomic number is 29

Explanation:

Answer:

I can't understand your language? can you write in English

I'm sorry