A group of students is investigating whether aluminum is a better thermal conductor than steel. The students take an aluminum wire and a steel wire of the same length and diameter. They put equal lengths of wax on one end of each wire and dip the other end into a beaker of hot water. The length of wax left on the wires after 10 minutes is shown. Experimental Observations Aluminum Steel Original length of wax 2.5 cm 2.5 cm Length of wax after 10 minutes 1.2 cm 1.8 cm Which step should the students take next

Answers

Answer 1

The step that the students should take next is : B. Analyze the data.

What is analysis of data?

Data Analysis is the process of applying statistical and/or logical techniques to describe and illustrate, condense and recap and then evaluate data.

Here in the given question, students have conducted an experiment to check their hypothesis on thermal conductivity of two metals; Aluminum and steel. The experimental observations have been noted. Next step based on the scientific procedure is to analyze the data.

Analysis of data suggests that; as the length of wax after 10 min is lower in Al than that of steel, hence aluminum is better thermal conductor.

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Related Questions

A 25.0-mL sample of 0.125 M pyridine is titrated with 0.100 MHCl.

Part A

Calculate the pH at 0 mL of added acid.

Part B

Calculate the pH at 10 mL of added acid.

Calculate the pH at 20 mL of added acid.

Calculate the pH at equivalence point.

Calculate the pH at one-half equivalence point.

Calculate the pH at 40 mL of added acid.

Calculate the pH at 50 mL of added acid.

Answers

pH in Part A is 9.16, pH in Part B is 5.56, and pH in Part C is 4.98.

The meaning of pH

a method for determining how basic or acidic something is. pH is measured on a scale from 0 to 14. On this scale, a pH of 7 denotes neutrality, meaning it is neither acidic nor basic. If the pH is less than or equal to 7, it is more acidic, and if it is greater than 7, it is more basic.

What causes the pH scale to range from 0 to 14?

A pH value of no greater than 0 is produced by a hydrogen ion concentration of no more than 1M at the far end. On the opposite extreme, there are no more than 1M hydroxide ions, resulting in a pH of no more than 14.

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if 4.0 l of a 4.9 m srcl2 solution is diluted to 40. l , what is the molarity of the diluted solution?

Answers

The concentration terms are molality, normality and mole fraction. Molarity can be used to find out the ionic strength of any solution. Therefore, 0.49M is the molarity of the diluted solution.

What is molarity?

Molarity can be calculated by dividing number of moles of solute by volume of solution in litre. Molarity is affected by temperature. Its unit is mole/liter. It measure the concentration of any solute in a solution.

Mathematically,

According to the neutralization law,

M₁V₁=M₂V₂

where,

M₁ = molarity of stock solution =4.9 M

V₁ = volume of stock solution = 4.0l

M₂ = molarity of dilute solution =M₂

V₂ = volume of dilute solution = 40l

substituting all the given values we get

M₁V₁=M₂V₂

4.9 ×4.0=M₂×40

M₂=0.49M

Therefore, 0.49M is the molarity of the diluted solution.

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which phase transitions result in a decrease in the entropy of their surroundings? select all that apply. group of answer choices fusion sublimation vaporization freezing condensation deposition

Answers

Condensation reduces a system's entropy by changing a gas into a liquid state while also dissipating heat outside the system.

What affects the environment's entropy?

Since heat (heat) is being released from the system into the environment, the entropy of a environment will rise.The subscript "systems" is frequently omitted from the heat in the previous iteration of this equation since heat is typically defined from the viewpoint of the system.

What modifications cause an increase in entropy?

As the temperature rises, entropy increases.The kinetic energy of the substance's particles increases as temperature rises.

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a. What is the electron-domain (charge-cloud) geometry of BrF5? Enter the electron-domain geometry of the molecule.

b. What is the molecular geometry of BrF5?

c. Ignoring lone-pair effects, what is the smallest bond angle in BrF5?

d. Which choice best describes the polarity of BrF5?

The molecule is polar and has polar bonds.
The molecule is nonpolar and has polar bonds.
The molecule is polar and has nonpolar bonds.
The molecule is nonpolar and has nonpolar bonds.

Answers

(a) Electron domain geometry - Octahedral. (b) Molecular geometry - Square pyramidal. (c) Smallest bond angle - 90° (d) The polarity of BrF₅, best choice is: The molecule is polar and has polar bond. (e) AsH₃ is polar molecule.

A molecule's valence shell electrons are shown in a very simple manner via a Lewis structure. It serves as a visual representation of how the electrons surrounding certain molecules' atoms are positioned.

It demonstrates the bonds that exist between a molecule's atoms and its lone pairs of electrons. When used in conjunction with hybrid orbitals, Lewis structures can also be helpful in predicting molecular geometry.

(a) Electron domain geometry - Octahedral.

(b) Molecular geometry - Square pyramidal.

(c) Smallest bond angle - 90°

(d) The polarity of BrF₅, best choice is: The molecule is polar and has polar bond.

(e) AsH₃ is polar molecule.

Your question is incomplete most probably your full question was

a. What is the electron-domain (charge-cloud) geometry of BrF5? Enter the electron-domain geometry of the molecule.

b. What is the molecular geometry of BrF5?

c. Ignoring lone-pair effects, what is the smallest bond angle in BrF5?

d. Which choice best describes the polarity of BrF5?

The molecule is polar and has polar bonds.

The molecule is nonpolar and has polar bonds.

The molecule is polar and has nonpolar bonds.

The molecule is nonpolar and has nonpolar bonds.

e. Of the molecules below, only ________ is polar.

H2

SiS2

CH4

AsH3

PF5

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what information is provided in the study guide found at the end of the chapter? how to read a chemistry text

Answers

A study guide found at the end of a chemistry chapter typically provides a summary of the key concepts and information presented in the chapter, as well as a list of key terms and definitions.

study guide may also include review questions and exercises designed to help students test their understanding of the material and identify areas where they may need additional practice or review. Additionally, it may also include some sample problems, tips for solving problems, and explanations of key concepts, as well as a summary of the key equations, formulas, and laws that were discussed in the chapter.In general, a study guide is a useful tool for students to use as they work their way through a chemistry textbook. It can help students to identify the most important information in the chapter, focus their study efforts, and check their understanding of the material. Additionally, it can also serve as a useful reference for students as they review for exams or complete homework assignments.

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chemical elements that do not exist in nature but can be created in the laboratory are known as synthetic elements. moscovium (\ce{mc}mcm, c), a synthetic element with atomic number 115115115, was first synthesized in 200320032003. a hypothetical mass spectrum for a sample of \ce{mc}mcm, c containing 101010 atoms is shown below.using the information in the spectrum, calculate the average atomic mass of \ce{mc}mcm, c in the sample. write your answer using four significant figures.

Answers

Nihonium (Nh) mass is 285.7 u, a synthetic element with atomic number 113, was the first synthesized chemical elements that do not exist in nature but can be created in laboratory.

How are laboratory-produced synthetic elements made?

Particle accelerators produce synthetic elements. Two tiny elements are propelled at breakneck velocities and crash with one another. Their nuclei combine to form one bigger element. Before it degrades, the element is examined using lab equipment.

Mass of Nb from the figure:

 => 10% x 284.2 + 30% 285.2 + 60% x 286.2

=> 285.7 u (atomic mass unit)

What purposes serve artificial elements?

Transuranium elements and the actinoid series are typically found in period 7, along with occasionally created artificially. These elements can be utilised for detectors and spectrophotometers in addition to being the typical fuel for chemical reactors. Some are applied in the pharmaceutical sector.

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Chemical elements known as synthetic that do not exist in nature but = was elements_ Nihonium can be created in the laboratory are the first synthesized in 2004. (Nh), synthetic element with atomic number 113, hypothetical mass spectrum for sample of Nh containing 10 atoms shown in the picture. Using this spectrum information, calculate the mass of Nh in this sample

Answer:

285.7 u.

Explanation:

1 / 4

The equation for average atomic mass is

average atomic mass

=

=

1

(

relative abundance

×

atomic mass

)

average atomic mass=

i=1

n

(relative abundance×atomic mass)

i

start text, a, v, e, r, a, g, e, space, a, t, o, m, i, c, space, m, a, s, s, end text, equals, sum, start subscript, i, equals, 1, end subscript, start superscript, n, end superscript, left parenthesis, start text, r, e, l, a, t, i, v, e, space, a, b, u, n, d, a, n, c, e, end text, times, start text, a, t, o, m, i, c, space, m, a, s, s, end text, right parenthesis, start subscript, i, end subscript

We can use this equation, along with the relative abundances and atomic masses of each isotope in the mass spectrum, to calculate the average atomic mass of

N

h

Nh in the sample.

Hint #22 / 4

The mass spectrum shows three peaks, each corresponding to a different isotope of

N

h

Nh. We can determine the relative abundance of each isotope by dividing the number of atoms of that isotope present in the sample by the total number of atoms in the sample:

Isotope

N

h

-

284

Nh-284

N

h

-

285

Nh-285

N

h

-

286

Nh-286

Atomic mass (

u

u)

284.2

284.2284, point, 2

285.2

285.2285, point, 2

286.2

286.2286, point, 2

Relative abundance

1

a

t

o

m

10

a

t

o

m

s

=

.

1

10 atoms

1 atom

=.1

3

a

t

o

m

s

10

a

t

o

m

s

=

.

3

10 atoms

3 atoms

=.3

6

a

t

o

m

s

10

a

t

o

m

s

=

.

6

10 atoms

6 atoms

=.6

Hint #33 / 4

Plugging the relative abundances and atomic masses into the equation for average atomic mass, we get:

average atomic mass

=

=

1

(

relative abundance

×

atomic mass

)

=

(

.

1

×

284.2

u

)

+

(

.

3

×

285.2

u

)

+

(

.

6

×

286.2

u

)

=

28.42

u

+

85.56

u

+

171.7

u

=

285.7

u

average atomic mass

 

=

i=1

n

(relative abundance×atomic mass)

i

=(.1×284.2 u)+(.3×285.2 u)+(.6×286.2 u)

=28.42 u+85.56 u+171.7 u

=285.7 u

Hint #44 / 4

So, based on the mass spectrum, the average atomic mass of

N

h

Nh in the sample is

285.7

u

285.7 u.

Translate the given conformer from the wedge-and-dash drawing into its Newman projection. (Hint: first decide whether the confirmation is staggered or eclipsed) Select the correct Newman projection below, and drag the three groups (X, Y, and Z) to their correct locations.

Answers

The given conformer from the wedge-and-dash drawing into its Newman projection is attached below.

What is Newman projection?

With the front atom represented by the point where three lines intersect (a dot) and the back atom represented by a circle, a Newman projection shows how a chemical bond will behave from front to back. The front atom is referred to as proximal, and the back atom as distal.

With a line representing the front atom and a circle representing the back carbon, the Newman projection, which is helpful in alkane stereochemistry, shows how a chemical bond will behave from front to back. It is referred to as proximal for the carbon atom in the front and distal for the one in the back.

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Complete question is attached below.

7. The percent by mass of chlorine in C2H5Cl is A) 51.94% B) 53.94% C) 64.94% D) 54.94%

Answers

The percent by mass of chlorine in C2H5Cl is  D) 54.94%.

In C2H5Cl, The molecular  weight of C2H5Cl is (12.01 + (2*1.01) + 35.45) = 64.47 g/mol

The weight of chlorine in the compound is 35.45 g/mol.

The mass percent of chlorine in the compound can be calculated by (mass of chlorine/total mass) x 100%.

Therefore, (35.45/64.47) x 100% = 54.94%

So, The percent by mass of chlorine in C2H5Cl is 54.94%.

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State 4 evidences to show
that matter Consists of particles

Answers

Answer:

All matter are composed of small particle which is known as atom.The atom cannot be divided into smaller particle, atom can neither be created nor can destroyed.All atoms in same element have same mass and properties.More that one atom combine to form compound.

if 25 milliliters of 0.80 m hcl is used to completely neutralize 40 milliliters of naoh solution, what is the molarity of the base? group of answer choices 5.0 m 50 m 0.05 m 0.50 m

Answers

The base has a molarity of 0.5M if 25 milliliters of 0.80M HCl are used to fully neutralize 40 milliliters of NaOH solution.

How do you determine molarity?

The following expression can be used to determine a solution's molarity:

M1V1 = M2V2

Where M1 is the acid's molarity.

M2 stands for the base's molarity.

V1 is equal to the acid's volume.

V2 is the volume of the base.

25 × 0.80 = 40 × M2

20 = 40M2\sM2 = 20/40\sM2 = 0.5M

As a result, the molarity of the base is 0.5M if 25 milliliters of 0.80 M HCl are used to totally neutralize 40 milliliters of NaOH solution.

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the activation energy for a reaction is changed from 237 kj/mol to 57.9 kj/mol at 653 k by the introduction of a catalyst. of the uncatalyzed reaction takes about 2290 years to occur, about how long will the catalyzed reaction take? assume the frequency factor a is constant and assume the initial concentrations are the same.

Answers

The activation energy for a reaction is changed from 237 kj/mol to 57.9 Kj/mol at 653 k by the introduction of a catalyst. of the uncatalyzed reaction takes about 2290 years to occur then about 1.64 * 10³yr⁻¹ will be consumed by uncatalyzed reaction if we assume the frequency factor a is constant and assume the initial concentrations are the same.

Activation energy for uncatalyzed energy,

Eₐ(1) = 237kJ/mol

Activation energy for catalyzed reaction,

57.9 kJ/mol

Time taken by uncatalyzed reaction,

t₁=2290 years

Temperature, T=653 K

First, we will find the rate constant for the uncatalyzed reaction:

k ∝ 1/t

k₁ = 1/2290yr=0.00040 yr⁻¹

The rate constant the catalyzed reaction (k2) is calculated as follows:

[tex]ln\frac{K_{2} }{K_{1} }[/tex] = [tex]\frac{E_{a(1) -E_{a(2)} } }{RT_{} }[/tex]

R=8.314 J/K⋅mol

K₂ = -6.08 * 10⁻⁴ yr⁻¹

Now, we will find time taken by catalyzed reaction:

t₂ = 1/k₂

t₂ = 1.64 * 10³yr⁻¹

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At 700 K, CCl4 decomposes to carbon and chlorine. The Kp for the decomposition is 0.76.Find the starting pressure of CCl4 at this temperature that will produce a total pressure of 1.2 atm at equilibrium.P=?

Answers

The starting pressure of CCl₄ at this temperature that will produce a total pressure of 1.2 atm at equilibrium pressure P is 0.69atm.

In terms of pressure, what is equilibrium constant?

It is described as the ratio of the partial pressures of the reactants to those of the products, both raised to a power that is equal to the coefficients of the respective reactants and products in a balanced chemical equation. This indicates by Kp.

CCl₄ ⇄ C (s) + 2Cl₂

Initial     p          0  0

equilibrium p-x   0  2x

Total pressure at equilibrium = p - x + 2x = p + x = 1.2---eq(1)

Kp = 076 = Pc ×P²cl/Pccl₄

Kp = 0×(2x)²/p-x

Kp = 4x²/p-x ---eq(2)

Solving equation (1) and (2). we get x = 0.51

p + x = 1.2

p = 1.2 - 0.51 = 0.69 atm

The starting pressure of CCl₄ is 0.69 atm.

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The amount of carbon 14 present after t years is given by the exponential equation A(t)=A0ekt​, with k=− ln2/5600. Using carbon 14 dating of charcoal found along with fossilized leaf​ fragments, botanists arrived at an age of 48,000 years for a plant. What percent of the original carbon 14 in the charcoal was​ present?

Answers

The exponential formula (A/Ao) x 100 ≈ 2.63 x 10-3 x 100 ≈ 0.263 gives the quantity of carbon 14 that was present after t years, meaning that 0.263 % of the original was still there.

What is a carbon's purpose?

Metals are melted using coke made from coal and charcoal, two forms of impure carbon. Inside the steel and iron sectors, it is particularly crucial. Pencil leads, electric motor brushes, and furnace linings all include graphite. For filtration and purification, activated charcoal is employed.

Are people harmed by carbon?

This information on health risks is predicated on exposures with carbon black, and elemental carbon. Chronic inhalation of carbon black can harm the heart and lungs, either permanently or temporarily.

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calculate the ph of a 0.20 m solution of nh4br at 25.0 ∘c.

Answers

The  pH of a 0.20 m solution of NH₄Br at 25.0 ∘c is 4.96.

pH is defined as the measure of the concentration of H⁺ ions, the acidity as well as alkalinity of a solution. Aqueous solutions at 25 ° C with a pH of less than 7 are basic and acidic or the alkaline solutions are those having pH greater than 7. All the acids and bases does not react with the same chemical compound at the same rate. Some will react vigorously, some moderately while others not show any reaction.

Use the Ka=5.6x10^-10

NH₄+(aq)+H₂0(l)=NH₃(aq)+H₃O+(aq)

I    0.20                       0              0

C     -x                           +x            +x

E      0.20-x                    x              x

(x^2)/(0.20-x)=5.6x10^-10

x=0.000011=[H₃O+]

pH=-log[H₃O+]

-log(0.000011)

pH=4.96

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use the information in the aleks data tab to sort the following chemical species by reducing power.
species : Zn(s) ; Ni(s) ; Ag(s) ; Na(s)
reducing power : choose one choose one choose one choose one

Answers

As per the aleks data tab the chemical species can be given as per the following: Ag<Zn<Mg<Na

This is not a redox reaction. None of the species are reduced and none are oxidized.

The decreasing power will be greater the lower the reduction potential.

A chemical reaction known as an oxidation-reduction (redox) reaction includes the exchange of electrons between two substances. An oxidation-reduction reaction is any chemical process in which a molecule, atom, or ion experiences a change in its oxidation number as a result of gaining or losing an electron.

Redox reactions are those in which one chemical is reduced and another is oxidized. Here, oxygen is being introduced, which causes C to oxidize into CO, and oxygen is being removed, which causes ZnO to decrease to Zn. It is a redox reaction as a result.

Redox reactions are those in which there is a change in the oxidation number, with both an increase and a drop in number.

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A 0.1 m solution is diluted by three orders of magnitude. what is the new concentration?

Answers

0.1 m solution is diluted by three orders of magnitude. The new concentration is 0.0001M.

What is meant by solution?

A homogenous mixture of one or more solutes that have been dissolved in a solvent is referred to as a solution. A solute dissolve in a solvent to form a homogenous mixture. Solute: A material that dissolves in a solvent to form a homogenous mixture.

In chemistry, a solution is a homogeneous mixture of two or more compounds in relative proportions that can be constantly changed up to what is referred to as the limit of solubility. Although the term "solution" is frequently used to refer to the liquid state of matter, solutions of gases and solids are also possible.

Calculation:

The new concentration will be 0.1/10x10x10 = 0.0001 m

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Calculate the percent ionization of 8.0×10−3 M butanoic acid (Ka=1.5×10−5) B. Calculate the percent ionization of 8.0×10−3 M butanoic acid in a solution containing 8.0×10−2 M sodium butanoate.

Answers

4.325% of 8.0 × [tex]10^{-3}[/tex] M butanoic acid be ionised, while only 0.018% of 8.0 ×[tex]10^{-3}[/tex] M butanoic acid be ionised in a solution that contains 8.0 ×[tex]10^{-2}[/tex] M sodium butanoate.

Ionization: What is it?

Ionization is any process that involves adding or removing electrons to change electrically neutral molecules or atoms (ions) into electrical charges atoms or molecules (ions).

A. [Butanoic acid] = 8.0*10−3 M

Ka = 1.5*10∧-5

Butanoic acid ionizes as:

HA ⇄ H+ + A-

Initially 8.0*10−3 0 0

Finally 8.0*10−3 - x x x

Ka = x*x / 8.0*10−3 - x

1.5*10−5 = x*x / 8.0*10−3

1.2*10^-7 = x*x

x = 3.46*10^-4 M

Percent ionization = (3.46*10^-4 / 8.0*10−3) * 100

= 4.325 %

B). [Sodium butanoate] = 8.0*10^-2 M

HA ⇄ H+ + A-

Initially 8.0*10−3 0 0

Finally 8.0*10−3 - x x 8.0*10^-2 + x

Ka = x*(8.0*10^-2 + x) / 8.0*10−3 - x

1.5*10−5 = x*8.0*10^-2 + x*x / 8.0*10−3

1.2*10^-7 = x*x + x*8.0*10^-2

x*x + x*8.0*10^-2 - 1.2*10^-7 = 0

x = 1.49*10^-6 M

Percent ionization = (1.49*10^-6 / 8.0*10−3) * 100

= 0.018 %

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0.50 moles of gas take up 10.5 L
of space under constant pressure
and temperature conditions.
What volume is required to hold
2.0 moles of the gas?

Answers

Answer:

The volume required to hold 2 moles of the gas is 42 L

Explanation:

By setting up mole and volume ratio:

            moles    :   volume

               0.50   :   10.5

                 2.0       :     X

thus X would be equal to:

(2.0 x 10.5)/0.50

= 21/0.50

= 42 L

Answer: 42

Explanation:

For a fixed amount of gas at a fixed temperature, what will happen if the volume is doubled? Will the pressure be doubled, remain unchanged, quadruple, or be halve?

Answers

For a fixed amount of gas at a fixed temperature, if the volume is doubled, the pressure will be doubled.

It is because according to the Ideal Gas Law, pressure and volume are directly proportional to each other. As one goes up, the other one goes up by the same degree. Formula for Ideal Gas Law is PV = nRT.

What is the Ideal Gas Law?

The Ideal Gas Law is the law in which the product of the pressure and the volume of one gram molecule of an ideal gas is equivalent to the product of the absolute temperature of the gas and the universal gas constant.

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Pansy has measured the volume of a sample of oxygen gas and has found that she has a total of 9.03 moles of the gas. What is the mass of this sample of oxygen gas? Please round your answer to two digits after the decimal point, and remember to include correct, complete units (including substance formula).

Answers

Answer:

Pansy has measured the volume of a sample of oxygen gas and has found that she has a total of 13.44 moles of the gas. What is the mass of this

Explanation:

n=m/Mr. m= nxMr = 13.44 x 32 = 430.08 g of oxygen

When is an object acceleration? Choose all that apply

Answers

Any

procedure

where the velocity varies is referred to as

object acceleration.

There are only two ways to accelerate

changing your

speed

or

changing your

direction

, or

changing both.

This is because

velocity

is both a speed and a direction.

No matter how quickly you're moving, you can't possibly be accelerating if you're not also altering your direction and speed.

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Imagine yourself in the shoes of Dimitri Mendeleev. You are provided with two sets of cards that list properties of various elements. These cards resemble the cards used by Mendeleev when he grouped elements. One set of cards lists the names of known elements and their properties, while the other set of cards lists the properties of a few unknown elements. These sets are shown below.

Answers

I would use the information from both sets of cards to create a comprehensive table of elements that organizes the elements according to their properties. This table would allow for easy prediction of the properties of new elements based on their position within the table.

Who invented the periodic table?

As a theoretical chemist and inventor of the periodic table, I would approach this task by first organizing the known elements based on their properties, such as atomic weight, melting point, boiling point, and valence. I would then look for patterns and trends in the properties of the known elements and group them together accordingly.

Next, I would examine the properties of the unknown elements and compare them to the known elements. I would try to find a place for each unknown element within the table of known elements, based on its properties. If the properties of the unknown element did not match any of the known elements, I would consider the possibility of a new element that should be added to the table.

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If you find a chemical in the lab and are unsure ofits identity, what is the best way to find out what itis?

Answers

The best way to find out what a chemical is in the lab is to consult the safety data sheet (SDS) for the chemical. An SDS will provide detailed information about the chemical, including its identity, hazards, and safe handling instructions.

If an SDS is not available, contact the supplier to request an SDS or consult a professional chemical reference book. Additionally, if there is a label on the container, it may provide the chemical identity. If the chemical is a mixture of multiple components, the best way to identify it is to run a chromatography analysis to separate and identify the components.

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What type of connecting force is permanent until the molecules go through a chemical reaction?

Answers

Answer: B intermolecular force

Explanation:

The answer to this question is Intermolecular force, since particles are connected to each other with a respective force prior to chemical reaction and this respective force is categorized on the basis of the nature of the particle all these forces are majorly considered an intermolecular force.

inter means between, molecular means molecules, resulting in binding force between molecules.

there are several different types of intermolecular forces :

Dispersion,

Dipole-Dipole,

Hydrogen Bonding

Ion-Dipole.

several types of intramolecular forces are:

Ionic bond( formed between ions)

Covalent bond (formed between carbon atoms)

metallic bond( formed between metallic atoms)

Answer: C. intarmolecular

Explanation:

balance the following sodium borohydride reduction equation below.

Answers

Therefore, C₁₄H₁₀O₂ + NaBH₄ = C₁₄H₁₄O₂ + Na₂ + B₄ is the balanced equation for sodium borohydride reduction.

Why is sodium borohydride used?

Aldehydes, ketones, or acid chlorides can be reduced using sodium borohydride when other easily reducible functional groups are present. 32 The solvents employed for the reduction are indicative of sodium borohydride's comparatively low reactivity. converts ketones and aldehydes to the corresponding alcohols. Esters, epoxides, lactones, carboxylic acids, nitro compounds, and nitriles are not reactive to sodium borohydride; nonetheless, it decreases acyl chlorides.

What is sodium borohydride made of?

In chemistry, sodium borohydride is a widely used reducing agent. Its formula is NaBH4, and its constituent elements are sodium (Na), boron (B), and hydrogen (H). Since it is a safer reagent for reduction than other options, it is frequently employed in chemistry labs. NaBH4 is primarily utilised in the production of Na2S2O4 (sodium dithionite), a bleaching agent for wood pulp that is also used to convert aldehydes and ketones to alcohols, from SO2.

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What is the force that exists between two atoms within a single molecule?

Answers

Answer:Intermolecular forces

Explanation:See in a molecule these intermolecular forces hold the atoms together which decides the rigidity of the material.

I hope the answer was helpful

3. When atoms bond, the electron configuration of each atom in the bond
resembles those of the nearest
1.Halogen
2.Noble Gas
3.Alkaline earth metal
4.Alkali metal

Answers

Answer:

Noble gas

Explanation:

Noble gases are the most stable elements on the periodic table, so every element aims to bond in a way that will make them have the same number of valence electrons as the noble gases. Valence electrons are the electrons in the outer ring of an element. Noble gases have eight valence electrons, which is the most possible. All elements aim to be unreactive in this manner. Hope this helps!

Noble gas as they are the least reactive and most stable on the periodic table

A small generic section of the primary structure of an a helix is given below. ?amino acid1 ?amino acid2 ?amino acid3 ?amino acid4 ?amino acid5 ?amino acid6 ?amino acid7? (a) Which amino acid residue?s backbone forms a hydrogen bond with the backbone of the sixth (6th) residue? Choose the correct residue from the drop-down menu. amino acid Select answer (b) Which of the following peptide segments is most likely to be part of a stable a helix at physiological pH? (c) How many hydrogen bonds can be formed within the backbone of 7 residues? Do not count the hydrogen bonds between this section and outside the section.

Answers

The an alpha helix amino fundamental structure Amino acid 1 two amino acids acid three −Glu−Leu−Ala−Lys−Phe− is the answer and three hydrogen bonds with water.

What are amino acids from helix?

On a polypeptide chain, a -helix is a correct helix of amino-acid residues that normally has between 4 & 40 residues. The oxygen of the top coil (C=O) and the protons of the bottom coil (N-H) form hydrogen bonds that keep this coil together.

What makes proline the "helix breaker"?

Alpha-helical and beta-sheet architectures of soluble (globular) proteins are known to be easily broken by the amino acid proline. This creates a structural conundrum because the Pro residue is frequently found in the presumed transmembrane helices of membrane proteins, deliver excellent proteins.

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he accident occurred during a safety test on the steam turbine of an RBMK-type nuclear reactor. During a planned decrease of reactor power in preparation for the test, the power output unexpectedly dropped to near-zero. The operators were unable to restore the power level specified by the test program, which put the reactor in an unstable condition. This risk was not made evident in the operating instructions, so the operators proceeded with the test. Upon test completion, the operators triggered a reactor shutdown. But a combination of operator negligence and critical design flaws had made the reactor primed to explode. Instead of shutting down, an uncontrolled nuclear chain reaction began

Answers

The operators were unable to restore the power level specified by the test program, which put the reactor in an unstable condition.

What is a project Reactor?

Project Reactor is a fully non-blocking foundation with back-pressure support included. It's the foundation of the reactive stack in the Spring ecosystem and is featured in projects such as Spring WebFlux, Spring Data, and Spring Cloud Gateway.

What is basic reactor?

Light-water reactors (LWRs) are power reactors that are cooled and moderated with ordinary water. There are two basic types: the pressurized-water reactor (PWR) and the boiling-water reactor (BWR). In the PWR, water at high pressure and temperature removes heat from the core and is transported to a steam generator.

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at a certain temperature, the solubility of n2 gas in water at 2.04 atm is 48.0 mg of n2 gas/100 g water . calculate the solubility of n2 gas in water, at the same temperature, if the partial pressure of n2 gas over the solution is increased from 2.04 atm to 6.00 atm .

Answers

According to henry's law, The solubility of n2 gas in water, at the same temperature is, 141 mg/100 g water.

What qualities make up solubility?

The maximum amount of a chemical which will dissolves in a volume of solvent at a given temperature is referred to as its solubility. Varying compounds have quite different solubilities, which is a characteristic of a specific solute-solvent pair.

Henry's Law says that the solubility of a gas is directly proportional to the pressure so:

S1/P1 = S2/P2

48 mg/100g / 2.04 atm = S2/6 atm

S2 = 141 mg/100 g water

solubility of n2 gas is 141 mg/100 g water

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