isotretinoin is a medication used for the treatment of severe acne. how many different isomers arising from double-bond isomerizations are possible?

Answers

Answer 1

The total number of isomers arising from double-bond isomerizations is 2 x 2 x 2 x 2 = 16.

Isotretinoin has a total of four double bonds in its structure. For each double bond, two isomers are possible due to cis-trans isomerism.

Therefore, the total number of isomers arising from double-bond isomerizations is 2 x 2 x 2 x 2 = 16.

However, it is important to note that not all of these isomers may be biologically active or have the desired therapeutic effect.

Additionally, other types of isomerism such as optical isomerism may also exist in isotretinoin, further increasing the number of possible isomers.

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Related Questions

For a second order reaction, if [A]^-1 is plotted vs. time, which corresponds to the slope of the plot?
a. 1/a
b. K
c. 1/k
d. Ln[a]
e. -k

Answers

For a second order reaction, if (A)^-1 is plotted vs. time is straight line with k= slope of the line,Plot the inverse of concentration of a reactnt verus time.

Second order reaction defined as chemical reactions which is the sum of the exponents in the rate of law of the chemical reaction is equal to two.The such reaction is written as the - r=k(A)2 or r= k(A)(B).

Second  order reaction is a type of reaction which is depend on the concentrations of one second order or two first order reactants.Reaction proceeds at rate proportional to the square of the product of the concentration of one reactant, or the product of the concentrations of two reactant.

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Calculate the number of ions of the following compound :16g of H2CO3​

Answers

Answer:

1) a) 1.81  × 10²³ molecules (b) 1.93  × 10²³ molecules (c) 0.66× 10²³ molecules

2) a) 0.45× 10²³ions  (b) 0.84× 10²³ions (c) 3.6 × 10²³ions

Explanation:

1) Number of molecules:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

a) 16g of H₂CO₃

Number of moles = mass/ molar mass

Number of moles = 16 g/ 62.03 g/mol

Number of moles = 0.3 mol

1 mol = 6.022 × 10²³ molecules

0.3 mol ×  6.022 × 10²³ molecules /1 mol

1.81  × 10²³ molecules

b) 20g of HNO₃

Number of moles = mass/ molar mass

Number of moles = 20 g/ 63.01 g/mol

Number of moles = 0.32 mol

1 mol = 6.022 × 10²³ molecules

0.32 mol ×  6.022 × 10²³ molecules /1 mol

1.93  × 10²³ molecules

c) 30g of C₆H₁₂O₆

Number of moles = mass/ molar mass

Number of moles = 20 g/ 180.156 g/mol

Number of moles = 0.11 mol

1 mol = 6.022 × 10²³ molecules

0.11 mol ×  6.022 × 10²³ molecules /1 mol

0.66× 10²³ molecules

2. Calculate the number of ions in the following compounds:

a) 10g of AlCl₃

Number of moles = mass/ molar mass

Number of moles = 10g/ 133.34 g/mol

Number of moles = 0.075 mol

1 mol = 6.022 × 10²³ ions

0.075 mol ×  6.022 × 10²³ ions/1 mol

0.45× 10²³ions

b) 30g of BaCl₂

Number of moles = mass/ molar mass

Number of moles = 30g/ 208.23 g/mol

Number of moles = 0.14 mol

1 mol = 6.022 × 10²³ ions

0.14 mol ×  6.022 × 10²³ ions/1 mol

0.84× 10²³ions

c) 58 g of H2SO4

Number of moles = mass/ molar mass

Number of moles = 58g/ 98.079 g/mol

Number of moles = 0.59 mol

1 mol = 6.022 × 10²³ ions

0.59 mol ×  6.022 × 10²³ ions/1 mol

3.6 × 10²³ions

Explanation:

Insulating materials are composed of atoms with?

Answers

Insulating materials are composed of atoms with tightly bound outer electrons.

What is Insulating Material ?

The material that stop the flow of Sound, Heat and Electricity by them are called Insulating Material. Insulator are the materials whose atoms have tightly bound outer electrons because electrons are not free to shared by neighboring atoms.

Examples: Glass, Plastic, Rubber, Air and Wood.

What are the types of Insulating Material ?

There are mainly three types of Insulating Material:

Heat Insulator Electricity Insulator Sound Insulator

Thus from the above conclusion we can say that Insulating materials are composed of atoms with tightly bound outer electrons.

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Which equation agrees with the ideal gas law?
StartFraction V subscript 1 over T subscript 1 EndFraction equals StartFraction V subscript 2 over T subscript 2 EndFraction.
V subscript 1 n subscript 1 equals V subscript 2 n subscript 2.
P subscript 1 n subscript 1 equals P subscript 2 n subscript 2.
StartFraction P subscript 1 over P subscript 2 EndFraction equals StartFraction T subscript 2 over T subscript 1.

Answers

The equation for ideal gas law is written as PV = nRT.

What is Ideal gas law?

Ideal gas law states that, the volume of a given amount of gas is directly proportional to the number on moles of gas, directly proportional to the temperature and inversely proportional to the pressure.

PV = nRT

where;

P is pressure of the gasV is volume of the gasn is number of molesR is ideal gas constantT is temperature

Thus, the equation for ideal gas law is written as PV = nRT.

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Answer:

A edg

Explanation:

What is the general trend for atomic radius as you go down the noble gas family?

Answers

Answer:

the atomic radius is larger as you go down the noble gas family

Write the empirical formula for at least four ionic compounds that could be formed from the following ions:

Answers

Here is the solution,
I have colour coded it so it’s easy to understand.
Hope it helps :)

a. How many Joules of energy are required to raise 3.50kg of water from 38.5 to 75.0C ? (specific heat of water is 4.184J/g C)(1000g=1kg)

b. How many grams of carbon are present if it requires 37.5 kJoules of energy to heat a sample from 30.0 to 55.0C ? (specific heat of carbon is 0.71 J/g C)

c. If 480.0 Joules is applies to a 50.0g sample of Hg in a thermometer that reads 25.0C, what will be the final temperature of the sample? (SH mercury is 0.14)

d. A 25.0kg sample of an unknown metal X requires 875kJ of energy to heat it from 55.0 to 125.0C. What is the specific heat of the unknown metal?


5.690x103 miles to meters.

900.0kg to grams

Please also give sig figs to all answers.

Answer fast please.

Answers

a.

A substance's specific heat tells you how much heat is required to increase the temperature of 1 g of that substance by 1°C.

The equation that establishes a relationshop between heat and change in temperature is

q = m • c • ∆T, where

q - heat absorbed

c - the specific heat of the substance, in your case of water

ΔT - the change in temperature, defined as the difference between the final temperature and the initial temperature

so:

q = 1.00 g • 4.18 J/g×°C • (75.0 - 38.5)°C

q = 152,57 J

just apply this formula for all exercises

A. How many Joules of energy are required to raise 3.50kg of water from 38.5 to 75.0C ? (specific heat of water is 4.184J/g C)(1000g=1kg)

Answer:

q = 534,506 Joules

q = 534.506 KiloJoules

534.506 KiloJoules or 534,506 Joules energy required to raise 3.50kg of water from 38.5 to 75.0C

What is sp.heat ?

Sp. Heat is the heat required to increase the temperature of the 1 mass of a given substance by a  [tex]1^{0}[/tex] C temperature.

The formula of specific heat Cp = [tex]\frac{q}{m (∆T)}[/tex]

Where,

q = energy of substance (Joules / KiloJoules),

Cp = Specific heat capacity of the substance (J/Kg.C),

m = mass of the substance

∆T = Change in temp.

Explanation:

Given data from que: -

Mss of the water (m) = 3.50 Kg = 3.50 × 1000 gm = 3500 gm

specific heat capacity of water (Cp) = 4.184J/g C

Change in temp (∆T) = 75.0 - 38.5 = 36.5

now, put all above given data in formula

we get

Cp = [tex]\frac{q}{m (∆T)}[/tex]

q = Cp ×m×∆T

q = 4.184×3500×36.5

q = 534,506 Joules

q = 534.506 KJ

A _____________ is a reagent that protects a component of the analyte from reaction with edta.
a. hindrance agent
b. displacement agent
c. masking agent
d. blocking agent
e. reducing agent

Answers

the answer is masking agent

Look at picture for the question

Answers

The amount, in grams, of carbon tetrachloride that would be present, will be 22.99 grams.

Finding the mass from the number of particles

For every one mole of any substance, there are 6.022 x [tex]10^{23}[/tex] atoms of particles. This is according to Avogadro.

Now, there are 9 x [tex]10^{22[/tex] particles in this particular carbon tetrachloride.

If 1 mole = 6.022 x [tex]10^{23}[/tex] particles

Then,

9 x [tex]10^{22[/tex] particles =  9 x [tex]10^{22[/tex] x 1/6.022 x [tex]10^{23}[/tex] particles

                       = 0.1495 moles

Carbon tetrachloride has the chemical formula CCl4 and has a molar mass of 153.82 g/mol.

Recall that: mole = mass/molar mass

Hence, mass = mole x molar mass.

Mass of 0.1495 moles CCl4 = 0.1495 x 153.82 = 22.99 grams

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A sample of gas has its number of molecules quadrupled, its Kelvin temperature doubled, and its volume tripled. By what factor has the new pressure changed relative to the original pressure

Answers

The new pressure changed relative to the original by a factor of 8/3.

What is the change in the pressure?

Using the ideal gas equation;

PV = nRT

P = pressure

V = volume

n = number of moles

R = gas constant

T = temperature

P1 = nRT/V

P2 = 4n * R * 2T/3V

Hence;

P2/P1 = 4n * R * 2T/3V ÷  nRT/V

P2/P1 = 4n * R * 2T/3V * V/nRT

P2/P1 =4 * 2/3

= 8/3

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__________ is the use of high energy radiation to kill cancer cells.

Answers

Answer:

Radiation therapy is the use of high energy radiation to kill cancer cells.

Answer:

Radiation Therapy.

Explanation:

Also known as radiotherapy, it uses high-energy radiation to damage and/or kill cancer cells.

i need help asapppp

You are a marine paleontologist working on the sediments in
the Mediterranean Sea. Seventeen different locations have
been investigated. Over four months your team found and
collected material that may once have been a part of an
ancient seabed. If it was an ancient seabed, it is likely to
contain fragments of shells and other fossils. After careful
analysis, you found one chemical to be predominant in all
seventeen samples. The percentage composition of this
compound was found to be 40.00% calcium, 11.99% carbon,
and 48.01% oxygen. The molar mass of the unknown
compound is 100.09 g/mol.

1. Find the empirical and molecular formulae for the unknown
compound (substance X). What is the name of this
compound?

Answers

The molecular formula of the compound is CaCO3.

What is the molecular formula?

The molecular formula is the formula of the compound that shows the number of atoms present in the molecule.

Now, we have that;

Ca - 40.00/40  C - 11.99/12   O - 48.01/16

Ca - 1   C - 1   O - 3

The empirical formula of the compound is CaCO3

Now;

[40 + 12 + 3(16)]n = 100.09

n = 100.09 /100

n = 1

Hence, the molecular formula of the compound is CaCO3.

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Show the calculations to determine the volume of the 0.1 M buffer from Part A needed to make 100 mL of a 0.01 M buffer.

Answers

The volume of the 0.1 M buffer from Part A needed to make 100 mL of a 0.01 M buffer is 10mL.

How to calculate volume?

The volume of a substance can be calculated using the following formula;

C1V1 = C2V2

Where;

C1 = initial concentrationC2 = final concentrationV1 = initial volumeV2 = final volume

0.1 × V1 = 100 × 0.01

0.1V1 = 1

V1 = 1/0.1

V1 = 10mL

Therefore, the volume of the 0.1 M buffer from Part A needed to make 100 mL of a 0.01 M buffer is 10mL.

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If you have 100 ml of a 0.10 m tris buffer (pka 8.3) at ph 8.3 and you add 3.0 ml of 1.0 m hcl, what will be the new ph?

Answers

The new pH is 7.69.

According to Hendersen Hasselbach equation;

The Henderson Hasselbalch equation is an approximate equation that shows the relationship between the pH or pOH of a solution and the pKa or pKb and the ratio of the concentrations of the dissociated chemical species. To calculate the pH of the buffer solution made by mixing salt and weak acid/base. It is used to calculate the pKa value. Prepare buffer solution of needed pH.

                       pH = pKa + log10 ([A–]/[HA])

Here, 100 mL  of  0.10 m TRIS buffer pH 8.3

                 pka = 8.3

         0.005 mol of TRIS.

∴  [tex]8.3 = 8.3 + log \frac{[0.005]}{[0.005]}[/tex]

   inverse log 0 = [tex]\frac{[B]}{[A]}[/tex]

   [tex]\frac{[B]}{[A]} = 1[/tex]

Given; 3.0 ml of 1.0 m hcl.

           pka = 8.3

           0.003 mol of HCL.

[tex]pH = 8.3 + log \frac{[0.005-0.003]}{[0.005+0.003]}\\pH = 8.3 + log \frac{[0.002]}{[0.008]}\\\\pH = 8.3 + log {0.25}\\\\pH = 8.3 + (-0.62)\\pH = 7.69[/tex]

Therefore, the new pH is 7.69.

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What best defines an extensive property of a substance? (4 points) A property that is observable A property that is measurable A physical property that depends on the sample size A physical property that is not dependent on sample size

Answers

Answer:

A physical property that depends on the sample size 

Explanation:

Molecules that have at least one carbon atom bonded to four different groups are __________ while molecules that do not contain a carbon atom bonded to four different groups are

Answers

Chiral carbon refers to compounds with at least one carbon atom connected to four different groups, whereas Achiral carbon refers to molecules without a carbon atom bonded to four separate groups.

What is Chiral carbon ?

Chiral carbon centres are tetrahedrally positioned carbon atoms that have four distinct substituents bonded to them. The terms "stereogenic carbons" and "asymmetrical carbon atoms" are also used to describe chiral carbon atoms.

What is Achiral carbon ?

An achiral molecule lacks "handedness" and can be superimposed on its mirror copy (think of a baseball bat, which can be used with either hand)

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Which one of the following terms is used to describe a loan wherein each payment is equal in amount and includes both interest and principal

Answers

amortized loan one of the following terms is used to describe a loan wherein each payment is equal in amount and includes both interest and principal.

What is an amortized loan?

A loan that is amortized requires the borrower to pay interest and principal over time. A three-year investment yields 5% a year in interest, paid out semi-annually.An amortized loan payment initially covers the interest cost for the period; any balance is applied to the principle balance.

What does it mean when a loan is amortized?

A loan that is amortized over a predetermined period of time is a type of financing. The borrower pays the same amount over the course of the loan under this form of repayment plan, with the initial portion going toward interest and the remaining sum being applied to the existing loan principal.

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A molecule with the formula ab3 and a trigonal planar molecular geometry uses ________ to form its σ bonds.

Answers

A molecule with the formula ab3 and a trigonal planar molecular geometry uses sp2 hybridization to form its σ bonds.

Trigonal hybridization is another name for sp2 hybridization. To create the new hybrid orbital known as sp2, one's orbital and two 'p' orbitals of equal energy are mixed together. Trigonal symmetry was used to generate a mixture of s and p orbitals, which are kept at 1200.

One s orbital and two p orbitals combine to generate three sp2 hybridizations, each of which has a 33 percent s character and a 67 percent p character. This process is known as sp2 hybridization. Anytime an atom is surrounded by three groups of electrons, this kind of sp2 hybridization is necessary.

Both the carbon and oxygen atoms are sp2 hybridized. The carbon atom can establish three bonds, one of which is to the oxygen, and possesses three sp2 hybridized orbitals.

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A __________________ election is the type of election in which candidates from the same party compete against one another to try to win the party's nomination.

Answers

A primary election is the type of election in which candidates from the same party compete against one another to try to win the party's nomination.

A formal procedure of communal decision-making, an election that's how a population chooses a person or people to hold public office.

A general election would be one that takes place simultaneously throughout all constituencies, usually the day before or within a few days. When a member dies or resigns, elections may be conducted just for that constituency to replace the vacancy.

For positions with fixed terms, such as that of the president, governor, or legislator, primaries are frequently held. There are normally no special primaries for positions that could be replaced without holding a new election, including such a prime minister.

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Calculate the mass of 2.5 moles of NaCl?

Answers

The mass of 2.5 moles of NaCl is 146.25 g.

What is a Moles?A mole is defined as the quantity of a material that includes precisely 6.02214076 X 1023 of the substance's elementary entities.A substance is said to have a mole with a mass equal to 12.000 g of 12C and the same number of basic units as atoms.The mole can be used to calculate the quantities involved in chemical processes and identify the simplest formula of a compound. The molarity notion, which is related, helps discuss reactions in solutions. The number of moles of a solute in a liter of solution is known as molarity (M).Quantities that cannot be quantified using units like grams or milligrams are referred to as moles. A mole thus counts the quantity of atoms, ions, or molecules.  

The mass of 2.5 moles of NaCl:

So, one mole of NaCl weighs 58.44 g. A 2.5 M solution is 2.5 moles per liter (Molarity is just the number of moles per liter). Therefore, 0.5 L would contain 1.25 mole. Hence, you would need 58.5×2.5 = 146.25 g

m(NaCl) = M×n

m(NaCl) = 58.5×2.5 = 146.25 g

The mass of 2.5 moles of NaCl is 146.25 g.

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The mass of NaCl is 146.25g .



Calculate the molar mass of NaCl ?

The Atomic mass of Na is 23g

Atomic mass of Cl is 35.5g

In the formula there is only one molecule of each element is present so,

Molar mass =23×1+35.5

. →58.5g/ mol

We have given ,

moles of NaCl →2.5 mol

molar mass of NaCl we have found earlier ,

58.5g/mol

No of moles = weight of NaCl /Mb

Mb represent molar mass ofNaCl

2.5=Wb/58.5

Weight of Nacl= 58.5×2.5

. →146.25g

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Including the conversion of pyruvate to acetyl coa, how many nadh, fadh2, atp, and gtp molecules are produced during the krebs cycle?

Answers

3 NADH + [tex]1FADH_{2}[/tex] + 1GTP (=ATP)  is used during Krebs Cycle in every  acetyl CoA

The Krebs cycle is also called citric acid cycle.The Krebs cycle is used for conversion pyruvate to acetyl CoA.The sequence of reaction in living organism in  which oxidation of acetic acid or acetyl equivalent provides  energy for storage in phosphate bonds.

The pyruvate is important chemical compound in the biochemistry.The pyruvate is primary used as transporter of carbon atoms into the mitochondria and do complete oxidation of this  carbon atoms into carbon dioxide.

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attractive forces between molecules in a solid are stronger
than bonds between atoms in a molecule

Answers

Answer:

False

Explanation:

Attractive forces between molecules in a solid are weaker than bonds between atoms in a molecule.

It takes much more energy to break intramolecular bonds (bonds within molecules) than it does to break intermolecular bonds (bonds between molecules). As a result, it is more difficult to break apart one molecule of a solid than it is to break the solid or separate the molecules from one another.

Which rule for assigning oxidation numbers IS correct?
Hydrogen is usually -1.
Oxygen is usually -2.
• A pure group 1 element is +1.
• A monatomic ion is 0.

Answers

Answer:

B.) Oxygen is usually -2

Explanation:

Hydrogen is usually +1.

A pure group 1 element is not always +1.

A monoatomic ion can be a range of numbers. However, it must be a charge other than 0.

Provide the IUPAC name for the compound below. a. 1-chloro-4-methylpent-2-yne b. 5-chloro-2-methylpent-3-yne c. sec-butylchloromethylacetylene d.1-chloro-4,4-dimethylbut-2-yne

Answers

Answer: a. 1-chloro-4-methylpent-2-yne - [tex]C_6H_9Cl[/tex]

              b. 5-chloro-2-methylpent-3-yne - [tex]C_6H_7Cl[/tex]

              c. sec-butyl chloromethyl acetylene - [tex]C_{12}H_{21}ClO_2[/tex]

              d.1-chloro-4,4-dimethylbut-2-yne - [tex]C_6H_9Cl[/tex]

What is the full name of IUPAC?

The full name of IUPAC is International Union of Pure and Applied Chemistry.

The compound's name is typed out first, followed by the base name and the substituents in alphabetical order (derived from the number of carbons in the parent chain). Between numbers and letters are separated by dashes and commas, respectively. The name has no spaces.

Therefore, a. 1-chloro-4-methylpent-2-yne - [tex]C_6H_9Cl[/tex]

              b. 5-chloro-2-methylpent-3-yne - [tex]C_6H_7Cl[/tex]

              c. sec-butyl chloromethyl acetylene - [tex]C_{12}H_{21}ClO_2[/tex]

              d.1-chloro-4,4-dimethylbut-2-yne - [tex]C_6H_9Cl[/tex]

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Each coin has a mass of 21.94 g and a volume of 2 mL which of the following metals are the coins made of

Answers

Answer:

A.

Explanation:

The density of each element represents the mass (grams) per every 1 milliliter Therefore, if each coin is 2 milliliters, you need to divide the given mass by 2.

21.94 grams / 2 mL = 10.97 grams / 1 mL

This matches the density of silver.

What was the first expert system developed to determine the chemical structure of molecules?

Answers

Dendral was the first expert system developed to determine the chemical structure of molecules.

A molecule refers to a set of (2) or more atoms that are chemically bonded collectively, which allows you to form the smallest essential unit of a chemical compound. additionally, molecules are capable of taking elements in a chemical reaction.

A molecule is the smallest particle of a substance that has all of the physical and chemical houses. Molecules are made up of one or extra atoms. A molecule is a hard and speedy of or greater atoms held together via the use of a way of appealing forces called chemical bonds.

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What is the element with the abbreviated electron configuration [kr]5 s 24 d 8?

Answers

The element with the abbreviated electron configuration is palladium.

Abbreviated electron configurations

Electron configurations can be abbreviated using the noble gas configuration. The noble gas elements have completely filled orbitals.

The noble gases are:

Helium with an atomic number of 2Neon with an atomic number of 10Argon with an atomic number of 18Krypton with an atomic number of 36And so on.

For example, an element with the atomic number 4 can have its electron configuration written as [He] [tex]2S^2[/tex].

An element with the abbreviated atomic number [Kr] [tex]5s^2[/tex] [tex]4d^8[/tex] has a total of the atomic number of Kr + 2 + 8.

                36+2+8 = 46 electrons.

The element with the atomic number of 46 is palladium.

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Noble gases are the least reactive elements on the periodic table


True or false

Answers

True. Noble gases are the least reactive elements on the periodic table

What are noble gases?

They are a group of elements with completely filled orbitals. In other words, they have zero valence electrons.

Without having valence electrons, it becomes difficult for this group of elements to form bonds with other elements either by electron donation or sharing.

However, they can be made to form bonds with other elements under special conditions.

Thus, they are the least reactive of all the elements in the periodic table.

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Answer:

TRUE!

"Why?"

The Noble Gases have eight valence electrons, which fill their outer energy level. This is the most stable arrangement of electrons, so noble gases rarely react with other elements and form compounds.

Hope this helps!

mass of an atom of element x is equivalent to the total mass of 7 hydrogen atoms. what element represent x ?

Answers

Answer:

lithium

Explanation:

The mass of hydrogen is 1 u, so the mass of element x is 7 u, which is approximately the atomic mass of lithium.

Which describes the oxidizing agent in a chemical reaction?
the substance that is oxidized because it loses electrons
the substance that is reduced because it loses electrons
the substance that is oxidized because it gains electrons
the substance that is reduced because it gains electrons

Answers

The statement that describes the oxidizing agent in a chemical reaction is the substance that is reduced because it gains electrons (option D).

What is a redox reaction?

A redox reaction is a chemical reaction in which some of the atoms have their oxidation number changed.

In a redox reaction, there are oxidizing and reducing agents. The oxidizing agent is the substance that receives electrons from another substance, hence, becoming reduced.

Therefore, the statement that describes the oxidizing agent in a chemical reaction is the substance that is reduced because it gains electrons.

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Answer:D

Explanation:

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Does anyone know how to do these 2? 3.- Una persona pinta el interior de un cuadrado de lado 15m, si antes de pintarlocomete un error al medir la longitud de los lados de 0.2m, resolver por diferencial(a).- Cul es el error mximo en el rea de pintado (cuanto de diferencia de reapinto ms debido al error). Anyone free to help me?( )For this assignment I need help on writing a paragraph explaining at least three ways that democracy in Athens influenced the United States government.In paragraph two, I need help explaining at least three differences between Athenian and American democracy.I will give brainliest, a thanks, all starts, and 30 points to whoever helps the most!\(^^)/ In the study of pesticide use and breast cancer, researchers evaluated pesticide use during the entire life of the respondents. How would you expect the results to have been affected if the researchers collected exposure history spanning the previous 20 years only? How does altitude from the surface of earth affect the time period of a simple pendulum Mrs. Raymond purchased a rectangular toy chest. Its dimensions are 4 1/2 feet by 2 1/2 feet by 3 feet. What is the total volume of the toy chest? Brainliest for the correct answer! a x + b y is equal to 12 part of me wants to say that the answer is A , but the other part of me is saying the answer is D, which one is it? Treys grandmother has a framed picture with side lengths that are 12 inches. Trey wants to know how much wall space is needed for the picture. 3,864,950 rounded to the nearest ten thousand Scientists want to investigate the effects of chronic acidification on a desert ecosystem. Which independent variable are the scientists most likely monitoring in their investigation? a. The amount of fog during different times of the year b. The composition and amount of seasonable melt water c. The daily production of sulfur dioxide by a nearby factory d. The heaviest traffic periods of the year Two students mixed up a new salt solution and put in blue and red food coloring to make it purple. They weighed 35 mL of the solution and found its mass to be 41 g. Where would the purple layer form if it were used with the four solutions above? Show your math.Answer:The density of the purple solution is _________________________.The purple solution would form a layer __________________________. Jenna Jeffries started her business baking dog treats by investing cash of $1,000. During May, its first month of operations, Jenna's Barkery had revenues of $3,000, all of which was collected in cash. She paid her assistant $1,000 in cash and purchased $200 of supplies on account. The business paid cash dividends of $500. Required:Determine the balance in Cash at the end of the month. Help me pls I don't know what I'm doing whats another term for weak solutions Mia and her friends are planning a trip to the movies. They can go to the movies on Friday, Saturday, or Sunday, and there are 10 different movies at the theater. Which expression represents the number of different combinations of day and movie Mia and her friends can choose? I love you Please answer my question :-) A motorcyclist is making an electric vest that, when connected to the motorcycle's 12 V battery, will warm her on cold rides. She is using 0.25-mm-diameter copper wire, and she wants a current of 4.2 A in the wire. Part A What length wire must she use Select the correct answer.What term refers to the behaviors associated with all of the positions that a person holds?OA.roleOB.role setOC.statusOD.status set What do you think would have the greatest effect on the bodya harmful mutation in a pluripotent embryonic stem cell