Can someone help me please. This is the last day

The statement that best describes a scatterplot is that it shows quantitative data that relate two variables (option C).

A scatter plot is a type of graph that displays the relationship between two variables.

The scatter plot is portrayed on a cartesian plane where one of the variables is on an axis called X-axis and the other is on another axis called y-axis.

One of the variables is the independent variable while the other variable is the dependent variable.

Therefore, the statement that best describes a scatterplot is that it shows quantitative data that relate two variables.

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Insects have two pairs of wings, while bats and birds each have one pair. Insect wings lack bones, but bird and bat wings have them. Butterfly wings are covered in scales, bird wings in feathers, and bat wings with bare skin. All of these organisms have adapted to life in the air and in doing so have evolved wings.

Insects have two pairs of wings, while bats and birds each have one pair. Insect wings lack bones, but bird and bat wings have them. Butterfly wings are covered in scales, bird wings in feathers, and bat wings with bare skin. All of these organisms have adapted to life in the air and in doing so have evolved wings.

Acetone to formaldehyde, formaldehyde to acetone. Methyl magnesium bromide is used to cure formaldehyde in the presence of dry ether, producing ethanol after acid hydrolysis and isopropyl alcohol.

Thus, Acetaldehyde is produced when ethanol is heated with copper at 373 K and is oxidized. Isopropyl alcohol is produced by treating acetaldehyde with methyl magnesium bromide while dry ether is present.

Acet is produced when isopropyl alcohol is heated with copper at 373 kelvin.

In 2010, around 6.7 million tonnes were manufactured globally, primarily for use as a solvent and for the synthesis of bisphenol A and methyl methacrylate, which are precursors to common isopropyl alcohol.

Thus, Acetone to formaldehyde, formaldehyde to acetone. Methyl magnesium bromide is used to cure formaldehyde in the presence of dry ether, producing ethanol after acid hydrolysis and isopropyl alcohol.

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Answer:

D

Explanation:

It is Sulfuric Acid

H₂SO₄ (aq) Sulphuric Acid is the acid in the reaction.

A substance that can donate a proton or accept an electron pair to form a bond is called an Acid

An acid turns Litmus paper red and has pH < 7 , It has the property of neutralizing alkali.

It has sour taste and can dissolve metals.

The reaction mentioned in the question is :

H₂SO₄ (aq)  + Mg (s)   ⇒ MgS0₄ (aq) + H₂ (g)

Here Sulphuric Acid is donating a proton i.e. H⁺ so is the acid in the reaction.

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In the case of the ionization of acetic acid, which can be represented as CH3COOH ⇌ CH3COO- + H+, the given equilibrium constant of 0.00002 tells us important information about the system.

Since the equilibrium constant is very small (less than 1), it indicates that the forward reaction (ionization of acetic acid) is not favored. In other words, the concentration of the products (CH3COO- and H+) at equilibrium is much lower compared to the concentration of the reactant (CH3COOH). This suggests that the majority of the acetic acid remains unionized.

Moreover, the small equilibrium constant suggests that the reverse reaction (recombination of CH3COO- and H+ to form CH3COOH) is favored. This means that any CH3COO- and H+ ions produced tend to recombine to form acetic acid, rather than remaining as dissociated ions.

Overall, the low equilibrium constant of 0.00002 indicates that the ionization of acetic acid is limited, and the majority of the acetic acid remains as unionized molecules in the system.

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Answer: i think its C

Explanation:

Answer:

14

Explanation:

The lithium atom has 3, which is its atomic number. (Atomic number is the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.) The chlorine atom has 17, so if you find the difference, it would be 14.

Density =mass/volume

=6/3

=2

In the decay reaction 60 60, 29 27 Co→28 Ni+ ? the emitted particle is an electron. This process is called Beta minus decay. In this process, a neutron in the nucleus transforms into a proton and an electron. The proton remains in the nucleus while the electron, with high energy, is emitted from the nucleus.

This causes the atomic number of the nucleus to increase by one, but the mass number remains the same. This process is governed by the weak nuclear force.Let's look at the balanced nuclear equation for this process and see how the emission of the electron is represented.

60Co → 60Ni + β-1 + γ

The symbol β-1 represents the emitted electron, and the symbol γ represents the emission of a gamma ray. The gamma ray is emitted as the nucleus transitions from a higher energy state to a lower energy state after the beta decay. The gamma ray has high energy, similar to X-rays, but is highly penetrating and dangerous to living organisms. Hence it is necessary to handle radioactive sources with care. The decay of Cobalt-60 is a common source of gamma rays used in the medical industry for radiotherapy to treat cancer. Cobalt-60 decays with a half-life of 5.26 years, which makes it a useful and long-lasting source for such applications.

In conclusion, the emitted particle in the decay reaction 60Co → 60Ni + β-1 + γ is an electron, emitted due to Beta minus decay. The process is governed by the weak nuclear force.

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The nucleus decays into the daughter nucleus, which has an atomic number lower by 2 and a mass number lower by 4, as well as an alpha particle. In the reaction 60 60, 29 27 Co→28 Ni+ ? the emitted particle is an alpha particle. In radioactive decay, the atom's nucleus undergoes a transformation, emitting alpha, beta, or gamma radiation to achieve stability.

An alpha particle is a particle consisting of two protons and two neutrons, and it is produced as a result of alpha decay, which is a type of radioactive decay. A nucleus may be unstable if it contains too many protons or neutrons, or if the energy required to keep the nucleus together (binding energy) is insufficient.

Unstable nuclei seek to reach a more stable state by undergoing radioactive decay. The daughter nucleus, which has an atomic number lower by 2 and a mass number lower by 4, is formed as a result of alpha decay. Therefore, in the reaction 60 60, 29 27 Co→28 Ni+ ? the emitted particle is an alpha particle.

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They create a redox reaction between zinc solid and zinc ions using additive plating. As a result, neutral zinc atoms were produced, which were then deposited onto copper coins.

A technique for coating one metal on top of another called electroplating. Typically, this is carried out for decorative, industrial, or coin-making purposes.

There are two methods for coating a metal:

1. Additive plating

2: Displacement plating

In additive plating, a species in a solution that contributes electrons reduces metal ions. Now, the reduced metal begins to deposit on top of another metal.

When the plating metal is present in the solution during displacement plating, a metal with a lower oxidation number displaces a metal with a higher oxidation number.

The only method used by counterfeiters to create fake coins is additive plating, in which the coinage metal is deposited on top of another base metal.

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Answer:

The balanced equation for this reaction is:

2HgS + 3O2 -------> 2HgO + 2SO2

Therefore the co-efficents added to HgS, 02, HgO and SO2 to balance this equation are 2, 3, 3,2 respectively.

This chemical reaction demonstrates the conservation of mass as the same number of atoms of each element appear on either side of the equation. This means that the total mass of atoms on the reactant side of the equation will equal the total mass of atoms on the product side of the equation.

Answer:

The correct name is barium (dihydrogen/dihydride

Explanation:

Google

An electric heating unit that utilizes ductwork to distribute the heated air is classified as a "forced air heating system."

In this type of heating system, electric heating elements generate heat, which is then distributed throughout the building using a network of ducts.

The heated air is forced through the ductwork by a fan or blower, allowing it to reach various rooms or areas in the building.

Forced air heating systems are commonly used in residential and commercial buildings as they provide efficient and effective heating by quickly and evenly distributing warm air throughout the space.

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Answer:

Quantitative data refers to any information that can be quantified, counted or measured, and given a numerical value. Qualitative data is descriptive in nature, expressed in terms of language rather than numerical values

Explanation:

:)

at the given temperature, HI will decompose into H2 and I2.

Given that the following reaction has an equilibrium constant value of

K = 46 at 783K: H2 (g) + l2 (g) = HI (g).

Initial pressures were given to be 55kPa for both hydrogen and iodine and 78kPa for hydrogen iodide which is at equilibrium. In this problem, Qp is the reaction quotient for pressures at the given instant. Qp has the same expression as Kp, but with initial pressures instead of equilibrium pressures.

Qp = p(HI) / [p(H2) . p(I2)] = 78 / [55 . 55] = 0.0241

K is the equilibrium constant and Q is the reaction quotient.Q is less than K. This implies that the reaction quotient will increase to match the equilibrium constant.

As a result, the reaction will shift forward to produce more HI. Thus, at the given temperature, HI will decompose into H2 and I2.

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Answer:

38.48 L. Good luck on your test :)

Explanation:

I clicked it and it was right.

The answer of the calculations above in scientific notation are a=8.3 ×10³, b= 3.9 × 10^¹um, c= 1.4 × 10³gmol, d= 5.6× 10²km

In calculation of various expressions, the results can be expressed in a scientific notation which is a way to compress cumbersome figures.

4.2 × 104 = 436.8

7.9 × 10³ = 7900

436.8 + 7900 = 8,336.8

The scientific notation= 8.3 ×10³kg

5.23 x 106 um = 554.38um

554.38 × 7.1 = 3,936.1

3,936.1 × 10^-²

3.9 × 10³ × 10^-²= 3.9 × 10^¹um

The scientific notation= 3.9 × 10^¹um

5.44 x 107 g = 582.08g

8.1 x 104 mol = 842.4 mol

582.08g+ 842.4 mol = 1,424.48

The scientific notation = 1.4 × 10³gmol

8.40 x 105 km = 882km

3.1 × 105 = 325.5km

882km - 325.5km = 556.5

The scientific notation = 5.6× 10²km

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Answer:

88.58 inches

Explanation:

You would just divide 225 by 2.54

Answer:

88.5827

Explanation:

A concentration of 0.15 M FeCl3 in aqueous solution would have the same osmotic pressure as a 0.20 M solution of CaCl2 at the same temperature, assuming ideal behavior.

To determine the concentration of aqueous FeCl3 that would have the same osmotic pressure as a 0.20 M solution of CaCl2, we can use the concept of osmotic pressure and compare the number of particles in each solution.

Osmotic pressure is directly proportional to the concentration of solute particles. Since both CaCl2 and FeCl3 are ionic compounds that dissociate in water, we need to consider the number of particles each compound produces.

CaCl2 dissociates into three particles: one Ca^2+ ion and two Cl^- ions.

FeCl3 dissociates into four particles: one Fe^3+ ion and three Cl^- ions.

If we assume ideal behavior, the osmotic pressure is proportional to the concentration of particles. Thus, to have the same osmotic pressure, the concentrations of the two solutions must be adjusted accordingly.

For the same osmotic pressure, we need to find the concentration of FeCl3 that corresponds to the same number of particles as the CaCl2 solution.

(0.20 M CaCl2) × (3 particles of FeCl3 / 4 particles of CaCl2) = 0.15 M FeCl3

Therefore, a concentration of 0.15 M FeCl3 in aqueous solution would have the same osmotic pressure as a 0.20 M solution of CaCl2 at the same temperature, assuming ideal behavior.

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The one that best describes the regioselectivity and stereospecificity in the Bronsted acid-catalyzed addition of water to an alkene reaction is Markovnikov orientation with syn-addition. Hence option A.

The preference of E and Y for bonds with carbon atoms an or b is referred to as the Markovnikov orientation. The example below demonstrates how, depending on the reaction conditions, a proton acid HY can add to the -bond of an unsymmetrical alkene with either a Markovnikov or an anti-Markovnikov orientation.

When hydrogen itself forms a double bond with the least-substituted carbon atom in asymmetrical alkenes or alkynes, the Markownikoff or Markovnikov rule determines the orientation of the electrophilic addition of hydrogen halides. (or triple bond). So, as conculsion, option A is correct.

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Complete question - which of the following describes correctly about the regioselectivity and stereospecificity in the bronsted acid-catalyzed addition of water to an alkene reaction?

Group of answer choices

1. markovnikov orientation with syn-addition

2. markovnikov orientation with anti-addition

3. anti-markovnikov orientation with syn-addition

4. anti-markovnikov orientation with anti-addition

5. markovnikov orientation with both syn- and anti-addition

Answer: 72.07%

Explanation:

P4 + 6 Cl2 --> 4PCl3

Since 123.90g/mol P4 is equivalent to 4(137.33g/mol PCl3)

So, 79.48g P4 = 4(137.33g/mol)(79.48g)/(123.90g/mol)

= 352.38g PCl3 formed

Percentage yield = (253.9/352.38) * 100 = 72.07%

The mass of 2.3 mol of plastic cubes is 2.38689g. The value can be determined by using dimensional analysis.

First, we need to find the mass of one cube. Since we are given that 3 cubes have a mass of 3.115g, we can divide this value by 3 to find the mass of one cube:

Mass of one cube = 3.115g / 3 = 1.0383g

Next, we need to calculate the molar mass of the plastic cubes. This can be done by dividing the mass of one cube by the number of moles in one cube:

Molar mass = Mass of one cube / Number of moles in one cube

Since we are given that there are 2.3 mol of cubes, the number of moles in one cube is 1 mol. Therefore:

Molar mass = 1.0383g / 1 mol = 1.0383g/mol

Finally, we can find the mass of 2.3 mol of plastic cubes by multiplying the molar mass by the number of moles:

Mass = Molar mass * Number of moles

= 1.0383g/mol * 2.3 mol

= 2.38689g

Therefore, the mass of 2.3 mol of plastic cubes is 2.38689g.

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Answer:

using a more concentrated potassium hydroxide

Explanation:

The option that would likely increase the rate of reaction would be to use a more concentrated potassium hydroxide.

The concentration of reactants is one of the factors that affect the rate of reaction. The more the concentration of the reactants, the faster the rate of reaction.

Granted that there are enough of the other reactants, increasing the concentration of one of the reactants will lead to an increased rate of reaction.

Hence, using a more concentrated potassium hydroxide which happens to be one of the reactants would likely increase the rate of reaction.

Answer:

using a more concentrated potassium hydroxide

Explanation:

When reading the label on a reagent container, the three most important pieces of information include:

This is referred to a chemical which is added to a mixture thereby resulting in a chemical reaction occurring and have different properties which is why the label has to contain their features.

It is therefore best to check the label for properties such as name and concentration so as to enable individuals use it for the right type of reactions and is also important in prevention of the risk of accident by individuals.

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Answer:

The temperature of a substance in chemistry, is taken as a measure or estimate of the average kinetic energy (\(K_{avg}\)) of the atoms or molecules contained in the substance. The 6.02 × 10²³ particles (atoms or molecules) within 1.0 mole of each substance can each posses different amount of kinetic energy at any given time. Some particles move very fast while others move very slow such that the kinetic energy of all the particles are only representable by a distribution and a conclusion regarding the  different aspects of the kinetic energy distribution of the particles of the substances is not easily possible

Explanation:

For a gas, we have;

\(KE_{avg} = \dfrac{3}{2} \cdot k \cdot T\)

Where;

\(KE_{avg}\) = The average kinetic energy

k = 1.38 × 10⁻²³ J/K

T = The gas temperature in Kelvin

6.73 m is the  height h; the bottle be placed so the liquid pressure is 66 mm - hg

P=ρgh

P=pressure

g= gravity

h= height

ρ=density

P=ρgh

h=P/ρg

h=66/1×9.8

h=6.73 m

The definition of pressure is force/area. For instance, the weight of the snow divided by the area of the roof would be used to illustrate the pressure from snow on a roof. In chemistry, gases are a common source of pressure. The lack of pressure is referred described as a "vacuum." Since "nature abhors a vacuum," humans have long believed that vacuums are both impossibly rare and unnatural. This isn't actually the case

The quantity of pressure units is absurd. The torr or mmHg is a frequently used unit. All that is being discussed here is a mercury column's height. There are 760 torr, or mmHg, in the atmosphere. You may also have a look at mmH2O

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The salt that produces a basic solution in water is NaF.

When a salt dissolves in water, it can either produce an acidic, basic, or neutral solution, depending on the nature of the salt. Salts that are derived from strong bases and weak acids are basic solution, while salts that are derived from weak bases and strong acids are acidic in nature. Salts that are derived from either strong bases and strong acids or weak bases and weak acids are neutral in nature.

In this case, NaF is derived from the strong base NaOH and the weak acid HF, so it is a basic solution. KCl is derived from the strong base KOH and the strong acid HCl, so it is neutral in nature. NH4Cl is derived from the weak base NH3 and the strong acid HCl, so it is acidic in nature. Therefore, the salt that produces a basic solution in water is NaF.

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