Which molecule is an isomer of the molecule shown?

Answer:

M(Fe₂O₃) = 159.70 g/mol

M(CO) = 28.01 g/mol

M(Fe) = 55.85 g/mol

M(CO₂) = 44.01 g/mol

Explanation:

We can calculate the molar mass of a compound by summing the molar masses of the elements that form it.

Fe₂O₃

M(Fe₂O₃) = 2 × M(Fe) + 3 × M(O) = 2 × 55.85 g/mol + 3 × 16.00 g/mol = 159.70 g/mol

CO

M(CO) = 1 × M(C) + 1 × M(O) = 1 × 12.01 g/mol + 1 × 16.00 g/mol = 28.01 g/mol

Fe

M(Fe) = 1 × M(Fe) = 1 × 55.85 g/mol = 55.85 g/mol

CO₂

M(CO₂) = 1 × M(C) + 2 × M(O) = 1 × 12.01 g/mol + 2 × 16.00 g/mol = 44.01 g/mol

Answer:

YES THE BULB WILL GLOW.

Explanation:

BECAUSE THE CIRCUIT UPPER AREA IS MADE OF PLASTIC SO THE PLASTIC CONDUCTS THE ELECTRICITY SO THE BULB WILL GLOW.

Answer:

a

Explanation:

Answer:

Mutualism

Explanation:

Answer: There are [tex]4.13 \times 10^{-3}[/tex] moles of Pb are contained in [tex]2.49 \times 10^{25}[/tex] atoms Pb.

Explanation:

According to the mole concept, 1 mole of every substance contains [tex]6.023 \times 10^{23}[/tex] atoms.

Hence, number of moles present in [tex]2.49 \times 10^{25}[/tex] atoms of Pb are as follows.

[tex]No. of moles = \frac{2.49 \times 10^{25}}{6.023 \times 10^{23}}\\= 4.13 \times 10^{-3} mol[/tex]

Thus, we can conclude that there are [tex]4.13 \times 10^{-3}[/tex] moles of Pb are contained in [tex]2.49 \times 10^{25}[/tex] atoms Pb.

In redox reactions, the reactant that is oxidized is also called the reducing agent and is denoted as option B.

These are compounds which take part in a chemical reaction and lose their electrons in the process.

This leads to them becoming oxidized in a redox reaction and then acts as a reducing agent to the other compound.

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there are two correct answers, reducing agent, and reductant

Answer:

-3

Explanation:

The oxidation state or oxidation number of an atom is the total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom.

The complex anion here is [Cr(CN)6]3-.

Now, as the oxidation state of CN or cyanide ligand is -1, and if we suppose the oxidation state of Cr to be 'x', then; x - 6 = -3 (overall charge on the anion),

so x= +3. Hence the oxidation state of Chromium in this complex hexacyanochromium (III) anion comes out to be -3.

.

Answer:

False

Explanation:

Hope this helps!

Answer:

True

Explanation:

It's because both compounds and elements are considered pure substances and a molecules is considered an element.

Answer:

1.00 × 10³ g

Explanation:

Step 1: Given data

Step 2: Calculate the moles of ethanol vaporized

Vaporization is the passage of a substance from liquid to gas. We can calculate the number of moles (n) vaporized using the following expression.

Q = ΔH°vap × n

n = Q / ΔH°vap

n = 843.2 kJ / (38.6 kJ/mol) = 21.8 mol

Step 3: Calculate the mass corresponding to 21.8 moles of ethanol

The molar mass of ethanol is 46.07 g/mol.

21.8 mol × 46.07 g/mol = 1.00 × 10³ g

The conversion of the liquid into water vapor is called vaporization.

The correct answer to the question is [tex]1.00 * 10^3 g[/tex]

The data given in the question is as follows:-

The formula we will use to calculate the moles is as:-

[tex]Q = H^ovap* n\\n = \frac{Q}{H^ovap}\\n = \frac{843.2 kJ}{(38.6 kJ/mol)} \\\\= 21.8 mol[/tex]

To calculate the mass of the following is as follows:-

[tex]21.8 mol* 46.07 g/mol = 1.00 * 10^3 g[/tex]

Hence the correct answer is [tex]1.00 * 10^3 g[/tex].

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Answer:

C. Protect them from predators because their calcium carbonate exterior allows them to withstand an attack from their predators in their specific environment.

Explanation:

They build layers to protect themselves from predators. Plus, I've seen this question and got it right.

Answer:

A common method is to perform an acid-base reaction, which can ... acid is not particularly water-soluble due to its nonpolar aromatic ring, ... An acid-base extraction can be used to extract carboxylic acids from ... carbonic acid (H2CO3) can decompose to water and carbon dioxide gas.

Explanation:

The bases that will work to deprotonate the compounds are :

The Benzene ring with carboxylic acid which is a weak acid can be deprotonated using NaOH or NaHCO₃ because of the weakness of the carboxylic acid.

Metal alkoxides like potassium tertiary butoxide can be used to deprotonate a Benzene ring with three carbon chain attached to a single carbon, and also containing a hydroxyl group  is a very weak acid hence the use of Metal alkoxides.

Benzene ring with a hydroxyl group attached  is also a weak acid just like the Benzene ring with carboxylic group hence it can also be deprotonated using NaOH

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Answer: asd asd asd asdasdasdasd

Answer:

Gases as might be expected, increase in solubility with an increase in pressure. Henry's Law states that: The solubility of a gas in a liquid is directly proportional to the pressure of that gas above the surface of the solution. ... When the bottle is opened, the pressure above the solution decreases.

Answer:High pressure increases the solubility.

Explanation: i just took the quiz

Answer:

i gotcha

Explanation:

Answer:

B. Divergent boundary

Hope this helps :)

Answer:

Slime mold or slime mould is an informal name given to several kinds of unrelated eukaryotic organisms that can live freely as single cells, but can aggregate together to form multicellular reproductive structures. Slime molds were formerly classified as fungi but are no longer considered part of that kingdom.

Answer:

Molds to put slime in

Explanation:

0.13M NaClO

Explanation:

9.5 g NaClO × (1 mol NaClO/74.442 g NaClO)

= 0.13 mol NaClO

Molarity = 0.13 mol NaClO/1 L

= 0.13M NaClO

Answer:

Explanation:

9.708 mg of CO₂ will contain 12 x 9.708 / 44 = 2.64 g of C .

3.969 mg of H₂O will contain 2 x 3.969 / 18 = .441 g of H .

mg of O in given liquid B = 3.795 - ( 2.64 + .441 ) = .714 mg

ratio of mg of C , H , O in the compound = 2.64 : .441 : .714

ratio of no of atoms  of C , H , O in the compound

= 2.64 / 12 : .441 /1 : .714 / 16

= .22 : .44 : .0446

= .22 / .22 : .44 / .22 : .044 / .22

= 1 : 2 : .2

1 x 5 : 2 x 5 : .2 x 5

= 5 : 10 : 1

empirical formula of the compound = C₅H₁₀O

Volume of 89.8 mL at 1 .00 atm at 200⁰C

volume of gas at 1 atm and 0⁰C = 89.8 x 273 / 473 mL

= 51.83 mL

51.83 mL weighs .205 g

22400 mL will weigh .205 x 22400 / 51.83 g

= 88.6 g

So molecular weight = 88.6

Let molecular formula be (C₅H₁₀O)ₙ

molecular weight = n ( 5 x 12 + 10 + 16 )

= 86 n

86 n = 88.6

n = 1 approx

So molecular formula is same as empirical formula

C₅H₁₀O is molecular formula .

To Find :

Number of moles of C₃H₆O present in a sample weighing 25.6 grams.

Solution :

Molecular mass of C₃H₆O is :

M = (6×12) + (6×1) + (16×1) grams

M = 94 grams/mol

We know, number of moles of 25.6 grams of C₃H₆O is :

[tex]n = \dfrac{Given \ Mass \ Of \ C_3H_6O }{Molar\ Mass \ Of \ C_3H_6O }\\\\n = \dfrac{25.6}{94}\ mole\\\\n = 0.27 \ mole[/tex]

Hence, this is the required solution.

The choice that is a benefit of international trade is Lower cost for labor.

When international trade is done especially if it is done in dollars then companies get more money and they have to pay less to the labours as per the own country's market. As rupees in India has lesser value than the dollars in USA that is why even some dollars are big amount of money in India. Company gets money in dollars but pay to the labours in rupees. This way it is very easy to the win the customers at lower price and also without any loss. International trade is used by a lot of fields in India now and also major in Ed tech.

International trade is the trade in which company from a particular country is providing services in the form of objects or knowledge to the other country.

Therefore, the choice that is a benefit of international trade is Lower cost for labor.

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Answer:

Q = 768.47 J

Explanation:

Given that,

Mass of the metal, m = 25 g

Initial temperature, T₁ = 21.0 ºC

Final temperature, T₂ = 80.0 ºC

The specific heat of the metal is 0.521 J/gºC.

We know that the heat released due to the change in temperature is given by :

[tex]Q=mc\Delta T\\\\=25\times 0.521\times (80-21)\\Q=768.47\ J[/tex]

Hence, 768.47 J of heat energy will be needed.

Answer:

the rate increases

Explanation:

they are closer to each other, they will collide with each other more frequently and more successful collision

Answer:

Explanation:Marketable and technically recoverable resources

Canada's natural gas reserves are estimated to be 1,383 trillion cubic feet, of which 542 trillion cubic feet is conventional gas, and the rest is unconventional including coal-bed methane, shale and tight gas.

Answer:

a nonradiative transition between states with different spin.

Explanation:

In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states.

Generally, matter exists in three (3) distinct or classical phases and these are; solid, liquid and gas.

An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such defines the structure of a chemical element.

Generally, these atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.

Hence, the internal arrangement of atoms in a mineral determines all of the physical properties of the mineral.

Intersystem crossing is a nonradiative transition between states with different spin. For example, a singly excited electronic state may transit into a triple excited state or a triple excited state to a single state, non radioactively.

Answer:

i think 2

Explanation:

i only think 2 i only think

Answer:

13.1743

Explanation:

1 grams Calcium to mol = 0.02495 mol

According to the mole concept, there are 13.12 moles of calcium in 525 g of calcium.

Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.Number of moles= mass/molar mass= 525/40=13.12 moles.

Thus, there are  13.12 moles of calcium in 525 g of calcium.

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Answer:

The balloon is cooled at a constant pressure until the temperature is -11°C. What is the volume of the balloon at this stage?

Answer:

heat is released

Explanation:

there is a release of energy to the surroundings resulting in a net decrease

Heat is released during an exothermic chemical change. Hence, option D is correct.

The process in which energy is released where bonds are broken is an exothermic reaction.

For example, combustion is an exothermic reaction where initially energy input along with oxygen and wax react to give heat, carbon dioxide and water.

An exothermic reaction is a "reaction in which standard enthalpy change ΔH⚬ is negative." Exothermic reactions release heat and entail the replacement of weak bonds with a stronger bonds.

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