How many moles of O2 are needed to produce 1.01 mol of CO2?

Five is the total number of peaks due to singly charged ions in the complete mass spectrum of chlorine, \(Cl_{2}\)

How many peaks do \(Cl_{2}\)'s molecular ions have?

The mass spectra of compounds with a single chlorine atom show two molecular ion peaks. This is because there are two isotopes of chlorine, 35Cl and 37Cl.

The molecular ion and fragment ions will both have peaks in the mass spectrum. When a mass spectrum is interpreted, a specific molecule can be located, confirmed, or its quantity can be calculated. the base summit of a mass spectrum's tallest (strongest) peak, caused by the ion with the highest relative abundance

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Five is the total number of peaks due to singly charged ions in the complete mass spectrum of chlorine, \(Cl_{2}\).

How many peaks do 's molecular ions have?

The mass spectra of compounds with a single chlorine atom show two molecular ion peaks. This is because there are two isotopes of chlorine, 35Cl and 37Cl.

The molecular ion and fragment ions will both have peaks in the mass spectrum. When a mass spectrum is interpreted, a specific molecule can be located, confirmed, or its quantity can be calculated. the base summit of a mass spectrum's tallest (strongest) peak, caused by the ion with the highest relative abundance

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Answer:

Explanation:

The density of a substance can be found by using the formula

From the question

mass of metal = 54.52 g

Volume of metal = new volume - original volume of water in the cylinder

That's

new volume = 28.85 mL

original volume of water = 23.44 mL

Volume of metal

= 28.85 - 23.44 = 5.41 mL

Next we convert the volume from mL to cm³

1 mL = 1 cm³

5.41 mL = 5.41 cm³

Substitute the values into the above formula and solve

That's

We have the final answer as

Hope this helps you

Heat absorbed by ethyl alcohol is 925.82838 J.

The quantity of heat required to raise the temperature of one gram of a substance by one celsius degree.

Given data:

Mass of ethyl alcohol = 7.89g

Initial temperature = 25 °C

Final temperature = 72.7  °C

Heat absorbed by ethyl alcohol = ?

Solution:

Specific heat capacity of  ethyl alcohol = 2.46 j/g.°C

Change in temperature = 72.7°C - 25 °C = 47.7 °C

Formula

Q = m. c. ΔT

Q = 7.89g  × 2.46 j/g.°C ×  47.7 °C

Q = 925.82838 J

Hence, heat absorbed by ethyl alcohol is 925.82838 J.

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Answer:

Electrochemical

Combustion

Photosynthesis

Respiration

Explanation:

Answer: The volume of 6.8g of Kr gas at STP is 0.00033064 L.

Explanation:

Answer:

Carbon monoxide + hydrogen ------> methanol

Explanation:

In writing a chemical equation, the substances which react together to form other substances are known as products and are usually placed on the left side of a the equation, whereas the substances that are formed by the reactants are known as products and are usually written on the right side of the equation. A forward pointing arrow is usually placed between the reactants and and products to show how the reaction proceeds from reactants to formation of products.

From the given equation, methanol is the product formed from the reactants carbon monoxide and hydrogen. Therefore, the equation will be:

carbon monoxide + hydrogen -----> methanol

Answer:

C

Explanation:

For my lazy bretheren

Answer:

Explanation:

The protein comprises of two 60-kD polypeptides and two 40-kD polypeptides. Each one of the 40-kD chains has a disulfide-bond, which is directly bonded to a 60-kD chain.

The 100-kD units attach noncovalently to produce a protein with a molecular mass of 200 kD.

The protein consists of 200 kD in size, and the Gel filtration doesn't affect the relationship and interaction among the various subunits in the protein.

When SDS-PAGE takes place, samples are being subjected to boiling of samples and therefore undergoing denaturation conditions. The result causes disorganization in the 100 kD units.

It implies that BME is responsible for the reduction between the R1-S-S-R2 bond between 40 kD and 60 kD to R1-SH and R2-SH, resulting in separate proteins.

However, the reducing agent (BME) main task is reducing disulfide bonds in a protein.

A fragment of DNA found in well 256 has the dna sequence AGGG, which is option B.

Finding the nucleic acid sequence, or the order of nucleotides in DNA, is the process of DNA sequencing. The four bases—adenine, guanine, cytosine, and thymine—are arranged in this way using any technique or technology. Rapid DNA sequencing techniques have significantly sped up biological and medical research and discovery.

For basic biological research, DNA Geographic Projects, and many applied sectors like medical diagnosis, biotechnology, forensic biology, virology, and biological systematics, knowledge of DNA sequences has become essential. In order to identify numerous illnesses, including different malignancies, characterise the antibody repertoire, and direct patient treatment, healthy and mutant DNA sequences are compared. Academic researchers employed time-consuming techniques based on two-dimensional chromatography to extract the first DNA sequences in the early 1970s. Since the invention of fluorescence-based sequencing techniques using a DNA sequencer, DNA sequencing has become much simpler and a great deal faster.

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Answer:

1577 °C

Explanation:

Step 1: Calculate the volume of the cylinder

The diameter of the base (d) is 13.0 cm and the height (h) is 15.6 cm. We will use the following expression.

V = h × π × (d/2)²

V = 15.6 cm × π × (13.0 cm/2)² = 8.28 × 10³ cm³ = 8.28 × 10³ mL = 8.28 L

Step 2: Calculate the moles of BF₃

We have 0.0985 kg (98.5 g) of BF₃, whose molar mass is 67.81 g/mol.

98.5 g × 1 mol/67.81 g = 1.45 mol

Step 3: Convert 2.70 MPa to atm

We will use the conversion factor 1 MPa = 9.86923 atm.

2.70 MPa × 9.86923 atm/1 MPa = 26.6 atm

Step 4: Calculate the maximum safe operating temperature

We will use the ideal gas equation.

P × V = n × R × T

T = P × V / n × R

T = 26.6 atm × 8.28 L / 1.45 mol × (0.0821 atm.L/mol.K) = 1850 K

We can convert 1850 K to Celsius using the following expression.

°C = K - 273.15 = 1850 K - 273.15 = 1577 °C

Answer:

Example 1

palladium(II) nitrate,

Example 2

Metal catalysts such as Fe, Ni, Mo, and Co are routinely used in the manufacture of CNMs.

Explanation

The three metals used in catalytic converters — rhodium, platinum and palladium — are part of a category known as platinum group metals, or PGMs, which are known for their catalytic properties.

n(mole)=mass: MM(molar mass)

n = 15 : 60

n = 0.25

There are 0.2494 moles of SiO₂ in 15.0 grams of SiO₂.

Moles (mol) are a unit of measurement used to express the amount of a substance. One mole of a substance is equal to the Avogadro's number (approximately 6.022 × 10²³) of particles, such as atoms, molecules, ions, or formula units.

Moles are used to convert between the mass of a substance and its number of particles, as well as to calculate the stoichiometry of chemical reactions. The number of moles of a substance can be determined by dividing the mass of the substance by its molar mass, which is the mass of one mole of that substance.

The molar mass of SiO₂ can be calculated as:

= (1 × Si atomic mass) + (2 × O atomic mass)

= (1 × 28.0855 g/mol) + (2 × 15.9994 g/mol)

= 60.0843 g/mol

moles = 15.0 g / 60.0843 g/mol

= 0.2494 moles

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The information from diagram shows the energy requirements needed in order for a reaction to

occur.

The collision theory states that each and every chemical reaction can occur between particles when the molecules collide each other.

The collision between particles is necessary but it is not sufficient for a reaction to take place. The collisions must be effective.

It is necessary to know the exact nature of an effective collision since this indicates whether particles react with each other and form new products.

According to collision theory, the reaction occur when molecules collide and molecules have sufficient activation energy to cross energy barrier.

Greater the energy, greater will be number of collision. Lesser energy, lesser will be number of collision.

Thus, the given energy diagram shows about the energy required for a reaction to take place.

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Answer: D) it shows the energy requirements needed in order for a reaction to occur.

Answer:

1. oxygen; carbonyl; nitrogen; α-helices or β-pleated sheets

2. carbonyl; amino; the next turn of the helical chain; carbonyl; amino; parallel sections of a long polypeptide chain.

Explanation:

The secondary structure of proteins is of two major conformations, the α helix and β conformations which are very stable.

1. The oxygen atoms of the carbonyl groups and the hydrogen atoms attached to the nitrogen atoms form α-helices or β-pleated sheets.

2. In the α-helix, hydrogen bonds form between the carbonyl oxygen atom and the amino hydrogen atom of a peptide bond in the next turn of the helical chain. In the β-pleated sheet, hydrogen bonds form between the carbonyl oxygen atom and the amino hydrogen atom of a peptide bond in parallel sections of a long polypeptide chain.

London dispersion forces are known to be the weakest among the intermolecular forces. Therefore, option (D) is correct.

London dispersion forces can be described as a type of intermolecular force acting between atoms and molecules that are generally electrically symmetric. The electrons are generally symmetrically distributed with respect to the nucleus and are part of the van der Waals forces.

The electron distribution around an atom undergoes varies in time which creates electric fields felt by other nearby atoms and molecules.

The net effect is in electron positions in an atom produce a corresponding redistribution of electrons in other atoms. These are the weakest among the other intermolecular forces.

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There are 6 atoms of oxygen present on the reactants side of the given reaction. Thus the correct answer is option B.

Firstly, let us write the accurate chemical equation and then subsequently we will balance it as and when needed.

4Fe+3O₂→2Fe₂O₃

This is the correct balanced chemical equation for the reaction. And as we can find that the amount of iron and oxygen atoms on the reactants side is equivalent to that of the products side. This corroborates that the given chemical equation is correctly balanced.

Now, the query is based on counting the total number of oxygen atoms present on the side of reactants. As we can clearly see on the reactant side  there are three Oxygen molecules that are present. That means that there are a total of six oxygen atoms, since 3*2 gives us a total of 6 oxygen atoms.

Hence, there are a sum total of six O₂ atoms that are present on the reactant side of the provided chemical equation.

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The full question is:

How many oxygen atoms are present on the reactant side of the chemical equation  4Fe+3O₂→2Fe₂O₃?

A. 3

B. 6

C. 7

D. 13

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Answer: During aerobic respiration, catabolic reactions convert larger complex organic molecules into ATP, the chemical that drives most physiological processes in the body.

Explanation:

Answer:

Titration of 50.00 mL of 0.0521 M sodium oxalate, Na2C2O4, required 38.71 mL of a potassium permanganate solution: 5 C2O42- + 2MnO4- + 16H+ = 2Mn2+ + 10 CO2 + 8H2O Calculate the molarity of the potassium permanganate solution.

Explanation:

If m and n are integers, which of the following must be an even integer? A. 2mn B. mn C. mn+2 d. mn-2 e. 3mn

The idea here is that you need to figure out how many moles of magnesium chloride,

MgCl

2

, you need to have in the target solution, then use this value to determine what volume of the stock solution would contain this many moles.

As you know, molarity is defined as the number of moles of solute, which in your case is magnesium chloride, divided by liters of solution.

c

=

n

V

So, how many moles of magnesium chloride must be present in the target solution?

c

=

n

V

⇒

n

=

c

⋅

V

n

=

0.158 M

⋅

250.0

⋅

10

−

3

L

=

0.0395 moles MgCl

2

Now determine what volume of the target solution would contain this many moles of magnesium chloride

c

=

n

V

⇒

V

=

n

c

V

=

0.0395

moles

3.15

moles

L

=

0.01254 L

Rounded to three sig figs and expressed in mililiters, the volume will be

V

=

12.5 mL

So, to prepare your target solution, use a

12.5-mL

sample of the stock solution and add enough water to make the volume of the total solution equal to

250.0 mL

.

This is equivalent to diluting the

12.5-mL

sample of the stock solution by a dilution factor of

20

.

Answer:

when placed in water, a sodium pellet catches on fire as hydrogen gas is liberated and sodium hydroxide forms. chemical change = fire is a sign of chemical reaction.

Explanation:

When placed in water the sodium pellets catch the fire and liberate the hydrogen gas. On mixing with water solid sodium forms a colorless basic solution.

Sodium is a soft metal. It is a very reactive element with a low melting point. Sodium reacts very quickly with water, snow, and ice to produce sodium hydroxide and hydrogen. It is an alkali metal and the sixth most abundant metal on earth. It has a silvery white color.

It has a strong metallic luster. On reacting with oxygen it produces sodium oxide which on reacting with the water produces sodium hydroxide.

It is used to improve the structure of certain alloys and soaps. It is also used in the purification of metals. Sodium is also present in sodium chloride, an important compound found in the environment.

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1) The number of moles of sodium acetate in the resulting solution is  1.1 * 10^-3 moles

2) Concentration of sodium acetate in the resulting solution is 0.09 M

3) The pH of the solution is predicted to be  5.6

We know that the term concentration has to do with the amount of substance that is in solution. In this case, what we have here is a buffer solution. A buffer is a solution of a salt and the weak acid.

Number of moles of acetate = 5.50/1000 L * 0.200 M

= 1.1 * 10^-3 moles

Number of moles of the acetic acid = 6.50/1000 L * 0.200 M

= 1.3 * 10^-3 moles

Total volume of the system = 5.50 + 6.50/ 1000

=  0.012 L

Concentration of sodium acetate in the resulting solution =

1.1 * 10^-3 moles/0.012 L = 0.09 M

Concentration of acetic acid  in the resulting solution =

1.3 * 10^-3 moles/0.012 L =0.011 M

pKa = - log(Ka)

= -log(1.8 * 10^-5)

= 4.7

Given that;

pH = pKa + log(A-)/(AH)

pH = 4.7 + log(0.09/0.011)

pH = 5.6

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Answer: my epic on fortnite is

Explanation:Bookboy24 ok add me and arena or creative

Answer:  A degenerate pressure will generate a large force to repel further  compression.

Explanation: In the production of new stars from the core of old dying white dwarf stars, the inner parts of the star will experience contraction with the release of  heat , as they contract, their atoms will be  squeezed such that their electrons start to overlap, and because of the Pauli's exclusive principle which states that no two electrons can occupy same space, the electrons will begin to repel each other and an opposing pressure called degenerate pressure will create a force so that the electrons  cannot continually be crushed or overlap. With the limit of contraction, the outer parts of the star will expand and be repelled releasing the old stars called nebula  and creating space for the inner new stars to form.

Answer:

I think its, balanced chemical equations

Explanation:

For a species to survive it must be within its geographical zone for all the genetic factors.

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Landslides are an example of erosion and it is denoted as option B.

This is referred to as the geological process in which earthen materials are worn away and transported by natural forces such as wind, water etc.

Landslides on the other hand is also associated with mass wasting and it is referred to as the movement of a mass of rock, debris, or earth down a slope and it is as a result of factors or forces such as water etc which is therefore the reason why erosion was chosen as the most appropriate choice.

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I think its phosphorus and nitrogen

Answer:

Commercial salt is manufactured from rock salt, as well as from seawater and other natural and artificial brines.In solution mining, water is pumped into the underground rock salt deposits to create brine that is then pumped back out to the surface. The brine is then evaporated in huge evaporating vessels to make the familiar white salt. This salt can be used in industry, by food manufacturers and, of course, at the table.

1. The IUPAC name of N is nitrogen.

2. Nitrogen dioxide

3.The IUPAC name of O is oxygen

4.The IUPAC name of OH is hydroxyl.

The IUPAC name of ·0 is a radical. It is commonly found in organic chemistry and plays an important role in many reactions.

IUPAC names for the given compounds are:1.1. N: Nitrogen

The IUPAC name of N is nitrogen.

It is a non-metal and belongs to group 15 in the periodic table. It has an electronic configuration of 1s2 2s2 2p3.1.2. NO2: Nitrogen dioxide

Explanation: NO2 is a chemical compound that is formed by the combination of nitrogen and oxygen. It is a reddish-brown gas that has a pungent odor.

The IUPAC name of NO2 is nitrogen dioxide.1.3. O: Oxygen

Explanation: The IUPAC name of O is oxygen.

It is a non-metal and belongs to group 16 in the periodic table. It has an electronic configuration of 1s2 2s2 2p4.

X: UnknownExplanation: No IUPAC name can be given to an unknown compound as the structure and composition are not known.

Y: Hydroxyl Explanation: The IUPAC name of OH is hydroxyl.

It is a functional group that is composed of an oxygen atom and a hydrogen atom (-OH). It is commonly found in alcohols and phenols. ·0: RadicalExplanation: A radical is a molecule or an ion that contains an unpaired electron.

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Note: The complete question is given below

Provide the IUPAC names for the following compounds:

\(CH_3CH_2CH(CH_3)CH_2CH_2CH_2CH_3\)

C6H5CH(CH3)2

H2NCH2CH2CH2CH2CH2NH2

CH3CH2CH2CH2CH2OH

CH3CH2CH2CHOHCH3

Answer:

Relative specificity.

Explanation:

Relative specificity can be defined as a phenomenon whereby molecules in a biochemical environment interacts or relates differentially with a large number of its partner, target, or substrate and as such affecting them respectively depending on each partner, target or substrate.

An enzyme refers to a biological catalyst that is typically used to speed up (accelerate) the rate of a chemical reaction by lowering the activation energy of its reactants.

The enzyme known as alcohol dehydrogenase is capable of oxidizing ethanol, methanol and other hydroxyl group containing organic compounds into their corresponding aldehydes. Such an enzyme with relative specificity catalyzes the reaction of structurally related substances known as substrates with similar structures and bonds.