You are doing GC with a packed column and notice that the baseline rises fromthe beginning to the end of each run. Explain a likely cause for thisincrease.

Answer: Fluorine

Explanation:   There are many variables that can affect the strenght of attraction of the electrons in a chemical bond.

The most significant of them is the electronegativity: a meassure of the affinity an element has with the electrons . The higher the electronegativity, the stronger the attraction with electrons.

Brainliest pls Have a nice day

Answer:

4g/cm^3

Explanation:

The formula for density is mass divided by volume. 180g is your mass, 45cm^3 is your volume, divide the two to get your answer.

The density of an object with a mass of 180 grams and a volume of 45 cm is 0.4 kg/m.

The measure of the matter is mass. Density and volume can be multiplied to determine the mass. Determining how tightly something is packed. It has such a definition since it is the mass per unit volume.

Volume is the area that a thing takes up. If you weigh two liquids with identical quantities or amounts, the heavier liquid is denser. When gently introduced to the water's surface, a substance that is less thick than water will float.

So the formula will be d = m / v

The mass of the object is 180 g

The volume of the object is 45 cm

Putting the value in the formula

d = 180 g / 45 cm = 0.4 kg/m

Thus, the density of an object will be 0.4 kg/m.

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Answer:

It is only student A

Explanation:

I just took the quiz and got a 100% good luck to whever is reading this.

Student A has drew the correct Lewis dot diagram.

The valence shell electrons in a molecule are depicted in an extremely simplified manner by a Lewis Structure. It is used to demonstrate how the electrons in a molecule are positioned around particular atoms.

Electrons are shown as "dots" or, in the case of a bond, as a line connecting the two atoms. The octet rule and formal charges must be met in order to achieve the "optimal" electron configuration.

Lewis electron dot structures, Lewis dot diagrams, and electron dot structures are a few names for Lewis structures. All of these titles allude to the same type of diagram that is used to depict the positions of bonds and electron pairs.

Therefore, Student A has drew the correct Lewis dot diagram.

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Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

\(volume = \frac{mass}{density} \\ \)

From the question we have

\(volume = \frac{26.4}{1.59} \\ = 16.60377...\)

We have the final answer as

Hope this helps you

The lewis electron-dot diagram which represents the bonding in potassium iodide, KI is give in image attached.

The correct answer choice is option 1.

The lewis structure can simply be defined as those diagrammatic chemical representations which describes the bonding between atoms in a particular molecular structure of a chemical substance. From the context of the above given task, the structure is bonded by eight different electrons.

The importance of lewis electron-dot structures cannot be overemphasized. Some of its significances are as follows:

In conclusion, we can now confirm from the explanation given above that potassium iodide is solid chemical compound.

The complete image of the options of the question is also attached.

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Answer:

Scientist used models to explain and predict the behavior of real object or system

Two electrons are produced or consumed.

To determine the number of electrons produced or consumed in the given half-reaction, we need to balance the equation. Let's consider both acidic and basic solutions:

Step 1: Write the half-reaction

The given half-reaction is:

SO2(g) → SO3^(2-) (aq)

Step 2: Balance the atoms

Start by balancing the atoms except for hydrogen and oxygen. In this case, sulfur is already balanced.

SO2(g) → SO3^(2-)

Step 3: Balance the oxygen atoms

To balance the oxygen atoms, add water molecules (H2O) to the side that lacks oxygen. In acidic solution, add water molecules on the right-hand side.

SO2(g) → SO3^(2-) + H2O

Step 4: Balance the hydrogen atoms

In an acidic solution, balance the hydrogen atoms by adding hydrogen ions (H+). In a basic solution, add hydroxide ions (OH-) to balance the hydrogen atoms.

Acidic solution:

SO2(g) + H2O → SO3^(2-) + H+

Basic solution:

SO2(g) + H2O → SO3^(2-) + OH-

Step 5: Balance the charges

Add electrons (e-) to balance the charges on each side of the equation.

Acidic solution:

SO2(g) + H2O → SO3^(2-) + H+ + 2e-

Basic solution:

SO2(g) + H2O → SO3^(2-) + OH- + 2e-

Step 6: Determine the number of electrons

From the balanced equation, we can see that in both acidic and basic solutions, 2 electrons are produced or consumed in the half-reaction.

Therefore, the correct answer is: Two electrons are produced or consumed.

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1. - c. Absolute dating

2. - k. Zircon

3. - m. Meteorites

4.- h. Compression melting

5. - e. Relative dating

6. - a. An igneous intrusion

7. - g. Unconformity

8. - d. Index fossils

9. - f. The Grand Canyon

10.- b. Iguazu Falls in Argentina

11. -h. Yosemite Valley

12.- i. Carbon 14 dating

13.-c. Radiometric dating

Carbon 14 dating, also known as radiocarbon dating, is a technique used to determine the age of organic materials based on their content of the radioactive isotope carbon-14. Carbon-14 is a naturally occurring isotope of carbon that is formed in the upper atmosphere by the interaction of cosmic rays with nitrogen atoms. This carbon-14 is incorporated into carbon dioxide molecules, which are then taken up by plants during photosynthesis and subsequently passed on to animals that eat those plants.

When an organism dies, it stops taking in carbon-14, and the carbon-14 in its tissues begins to decay into nitrogen-14 at a known rate. By measuring the amount of carbon-14 that remains in the sample, scientists can determine how long it has been since the organism died.

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As the electrostatic force, Fe, of the ionic compounds increases, the melting point of the ionic compounds will go up.

The melting point of a solid is the temperature at which the solid begins to melt.

The melting point of a pure solid occurs at a definite temperature. During the process of melting, the temperature of the solid remains constant as all the heat supplied to the substance is used to break up the energy of the intermolecular forces between the particles of the substance.

Hence, the stronger the intermolecular forces between the particles of a substance, the higher will be the melting point.

For ionic compounds, the stronger the electrostatic forces of attraction between the ions, the higher the melting point of the ionic compound will be.

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The molar solubility of CuCl in a solution containing 0.020 M KCl is 5.0 × 10⁻⁵ M.

1. Write the balanced chemical equation for the dissolution of CuCl:
  CuCl (s) ↔ Cu⁺ (aq) + Cl⁻ (aq)

2. Write the expression for the solubility product constant (Ksp) of CuCl:
  Ksp = [Cu⁺][Cl⁻]

3. Given that the Ksp of CuCl is 1.0 × 10⁻⁶, we can set up an ICE (Initial, Change, Equilibrium) table to find the molar solubility of CuCl:

      | [Cu⁺] | [Cl⁻]
  I   |   0   | 0.020
  C   |   x   |   x
  E   |   x   | 0.020+x

4. Since Ksp = [Cu⁺][Cl⁻], plug in the equilibrium concentrations:
  1.0 × 10⁻⁶ = x(0.020 + x)

5. Given that the Ksp is very small, we can assume that x is much smaller than 0.020, so the expression becomes:
  1.0 × 10⁻⁶ = x(0.020)

6. Solve for x, which represents the molar solubility of CuCl:
  x = (1.0 × 10⁻⁶) / 0.020 = 5.0 × 10⁻⁵ M

Therefore, the molar solubility of CuCl in a solution containing 0.020 M KCl is 5.0 × 10⁻⁵ M.

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Explanation:

According to the problem 0.2916 g of water were produced, so we have to find the number of moles of H in that sample of water. First we will convert those grams into moles using the molar mass of water.

molar mass of H = 1.01 g/mol

molar mass of O = 16.00 g/mol

molar mass of H₂O = 2 * 1.01 g/mol + 1 * 16.00 g/mol

molar mass of H₂O = 18.02 g/mol

moles of H₂O = 0.2916 g * 1 mol/(18.02 g)

moles of H₂O = 0.01618 moles

One molecule of H₂O contains two atoms of H. So 1 mol of H₂O molecules will contain 2 moles of H atoms. We can use that relationship to find the answer to our problem.

1 mol of H₂O = 2 moles of H

moles of H = 0.01618 moles of H₂O* 2 moles of H/(1 mol of H₂O)

moles of H = 0.03236 mol

Answer: 0.03236 mol of H atoms are present in the water produced.

The pH scale is a logarithmic scale that measures the concentration of hydrogen ions in a solution. A decrease in one unit of pH corresponds to a ten-fold increase in the concentration of hydrogen ions. Therefore, a solution of pH 4 has 10 times more hydrogen ions than a solution of pH 5.

To answer the question, we can calculate the ratio of hydrogen ion concentrations between the two solutions:

Ratio of hydrogen ion concentrations = 10^(pH5 - pH4) = 10^(5-4) = 10

Therefore, a solution of pH 4 is 10 times more acidic than a solution of pH 5.

The answer is B) 10.

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Answer:

C

Explanation:

A gas is a state of matter that has no fixed shape and no fixed volume gases have lower density than other states of matter such as solids and liquids.

The experimental error in this case is 4.46%.

At STP (Standard Temperature and Pressure), 1 mole of gas occupies a volume of 22.4 liters. Therefore, the experimental error in this case can be calculated as follows:

Experimental error = | (experimental value - theoretical value) / theoretical value | x 100%

= | (21.4 L - 22.4 L) / 22.4 L | x 100%

= 4.46%

This means that the experimental volume of 21.4 L is 4.46% lower than the theoretical value of 22.4 L at STP. This could be due to various factors such as instrumental errors, human errors.

Therefore, the experimental error in this case is 4.46%.

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Answer:

C. Yes, because they have a definite composition.

Explanation:

Answer:

LiOH+CH3COOH=C2H3LiO2+H2O balanced equation

Explanation:

lithium hydroxide-> LiOH

hydrogen acetate->CH3COOH

lithium acetate->C2H3LiO2

water->H2O

LiOH+CH3COOH=C2H3LiO2+H2O

Li=1,O=3,H=5,C=2 --> Li=1,O=3,H=5,C=2

the two sides have same numbers so it is balanced.

Answer:

Volume O₂ at STP = 50.4 Liters

Explanation:

4Al(s) + 3O₂(g) => 2Al₂O₃(s) at STP conditions

81g Al(s) = 81g/27g/mole = 3mole Al

moles O₂ consumed = 4/3(3)moles O₂ = 2.25 moles O₂ consumed

Volume O₂ at STP = 2.25moles x 22.4L/mole = 50.4 Liters O₂

Answer: B) the forces in the solid hold the atoms tightly in place

Explanation:This is because there is no room for the atoms to move around much and because they are very close together which makes the phase a solid.

Answer:

812.3 kilogram/cubic meter

Explanation:

I used an online calculator.

Hope I helped!

C/ If Fe is greater than Fg, the negatively charged oil droplet will move freely toward the negatively charged plate.

In the Millikan oil droplet experiment, the negatively charged oil droplets are subjected to an electric field created by the charged plates. The electric force (Fe) acts on the oil droplet in a direction opposite to the gravitational force (Fg). When Fe is greater than Fg, the electric force overcomes the gravitational force, causing the negatively charged oil droplet to experience an upward force. As a result, the oil droplet moves freely upward toward the negatively charged plate.

Option B is incorrect because if Fe is equal to Fg, the forces balance each other, resulting in a stationary droplet. However, the question states that Fe is increased until it is greater than Fg, implying that the droplet is no longer stationary but moves in response to the electric force.

Therefore, option C is the correct answer, as it describes the effect of an electric field on the motion of a negatively charged oil droplet in the Millikan oil droplet experiment.

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The area = 313.612 cm²

Force (F) can cause objects to move

While pressure (P)is the force per unit area

\(\tt P=\dfrac{F}{A}\)

weight=force=105 pounds(lb)⇒english units

pressure = 2.16 lb/in²

Thea are (A)

\(\tt A=\dfrac{F}{P}=\dfrac{105}{2.16}=48.61~in^2\\\\1~in^2=6,4516~cm^2\\\\48.61~in^2=313,612~cm^2\)

Answer:

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Based on the data table provided, it appears that the unknown solution has reacted with several different solutions to form various precipitates. By analyzing the reactions and the resulting precipitates, we can make some educated guesses about the composition of the unknown solution.

For example, the fact that a precipitate forms when the unknown solution is mixed with solutions of barium chloride, silver nitrate, and lead(II) nitrate suggests that the unknown solution contains chloride, nitrate, and/or sulfate ions. Furthermore, the fact that no precipitate forms when the unknown solution is mixed with solutions of potassium chloride and sodium sulfate suggests that the unknown solution does not contain these ions.

However, it is important to note that precipitation reactions alone cannot definitively identify the components of an unknown solution. Further testing, such as titrations or spectroscopic analysis, may be necessary to confirm the composition of the unknown solution.

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In the given reaction: Mg(s) + 2 HCl(aq) → MgCl(s) + H2(g) The correct statement about the reaction is: B) H is the reducing agent because it loses electrons.

Let's break down the given reaction and analyze the oxidation and reduction processes involved.

The reaction is: Mg(s) + 2 HCl(aq) → MgCl(s) + H2(g)

In this reaction, magnesium (Mg) reacts with hydrochloric acid (HCl) to produce magnesium chloride (MgCl) and hydrogen gas (H2).

To determine the oxidizing and reducing agents, we need to identify the species undergoing oxidation and reduction by looking at the changes in their oxidation states.

Oxidation involves an increase in oxidation state, while reduction involves a decrease in oxidation state.

Let's examine the oxidation states of the relevant elements:

Now, let's analyze the reaction:

Mg(s) + 2 HCl(aq) → MgCl(s) + H2(g)

Based on these observations, we can conclude the following:

Therefore, the correct statement is:

B) H is the reducing agent because it loses electrons.

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Answer:

because the ions arent firmly held in place!

Explanation:

Answer:

La materia está constituida por átomos, que a su vez forman moléculas. Las moléculas constituyen la mínima parte en la que se puede fragmentar una sustancia para que conserve sus propiedades. Todo lo anterior permite que la materia se pueda presentar en estado sólido, líquido y gaseoso.

Explanation:

To raise the concentration of a 2-liter solution of 30% acid to 50%, 0.8 liters of pure acid should be added. The amount of acid before and after mixing is equated to find the necessary quantity.

Let us assume that x liters of pure acid should be added. The given 2 liters of 30% concentrate is mixed with x liters of pure acid to raise the concentration to 50%.

According to the question, the amount of acid before mixing is:

2 × 0.3 = 0.6 liters of acid

The amount of acid after mixing is (2 + x) × 0.5

The quantity of acid before mixing is equal to the quantity of acid after mixing, hence

0.6 = (2 + x) × 0.50.6/0.5 = 2 + xx = 1.2 - 2x = -0.8

Therefore, x should be equal to 0.8 liters.

Hence, 0.8 liters of pure acid should be added to 2 liters of 30% concentrate to raise the concentration to 50%.

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