Find the number of miles of sulfur in 452 g of sulfur (show work please)

Answers

Answer 1

The number of mole in 452 grams of sulphur is 14.125 mole

How do I determine the number of mole of sulphur?

The number of mole in a substance is defined as the ratio of mass to the molar mass of the subtance. This is illustrated below:

Mole = mass / molar mass

Applying the above formula, we can determine the number of mole in 452 grams of sulphur. Details below

Mass of sulphur = 452 grams Molar mass of sulphur = 32 g/mol Number of mole of sulphur =?

Mole = mass / molar mass

Number of mole of sulphur = 452/ 32

Number of mole of sulphur = 14.125 mole

Thus, the number of mole is 14.125 mole

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Related Questions

If CCL4 contain 9.903g what is the mass percentage of carbon in the compound

Answers

The mass percentage of C is 7.8 %

What do you mean by mass percentage?

The method for expressing a concentration is known as mass percent. The solution components of a given solution can be defined by the mass percentage.

The molar mass of CCL4 is carbon 12.0107g + 4*chlorine 35.453g = 153.823g.

The number of moles of carbon in CCL4 can be found by dividing the mass of carbon (12.0107g) by the molar mass of carbon (12.0107g/mol).

The mass percentage of carbon in CCL4 can be found by multiplying the number of moles of carbon by the molar mass of CCL4 and dividing by the total mass of CCL4, then multiplying by 100.

So, mass percentage of C = (12.0107g / 153.823g) * 100 = 7.8 %

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For a diffraction grating with 1600 blazes/mm, what wavelength would you get for an angle of incidence of 30 degrees and reflection angle of 7 degrees? Assume first order diffraction.

Answers

The wavelength  you get for an angle of incidence of 30 degrees and reflection angle of 7 degrees is

2.3633166* 10^{-4}mm

What is wavelength?

Generally, To calculate the wavelength, you would need to use the equation for diffraction grating:

mλ = d(sin θi - sin θr)

Where

m is the order of diffraction (in this case, first order, so m=1), λ is the wavelength, d is the distance between the grating lines (in this case, 1600 lines/mm), θi is the angle of incidence, and 'θr is the angle of reflection.

Plugging in the given values:

1λ = (1/1600 mm)(sin 30° - sin 7°)

Solving for λ:

λ = (1/1600 mm)(sin 30° - sin 7°)

λ = 2.3633166* 10^{-4}mm

This equation gives you the wavelength in the first-order diffraction

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Can anyone help me on balancing equations?

Answers

Answer:In (a). 1st blank will be 1

2nd blank will be 4

3rd blank will be 3

(b).1-1

2-3

3-1

4-2

(c).1-1

2-12

3-12

4-11

(d).1-2

2-3

3-2

4-4

Explanation:

how we compare an anion and cation​

Answers

Answer:

Explanation:

An anion is a negatively charged ion, meaning it has gained one or more electrons. A cation is a positively charged ion, meaning it has lost one or more electrons. The charge of an ion can be determined by its atomic number, the number of protons it contains, and the number of electrons it contains. An anion will have more electrons than protons and a cation will have more protons than electrons. An anion will be attracted to positive charges, while a cation will be attracted to negative charges. Anions and cations can also be compared based on their size and shape. Anions are typically larger than cations, and they often have a spherical shape. Cations, on the other hand, are typically smaller and have a more angular shape.

HELP ASAP PLS PLS PLS 100 POINTS, BRAINLY IF CORRECT
For the Haber process, N2 + 3H2→2NH3, which is the mole ratio of NH3 to H2.

Question 1 options:

2:3


1:3


1:2


3:2

It says 3:2 is wrong so I need different answer pls pls pls.

Answers

Answer: 2:3

Explanation: The question is phrased annoyingly. NH3 to H2 means we need to keep our numbers correct.

2NH3 -> 2 mol of NH3.

3H2 -> 3 mol H2.

NH3/H2 = NH3 to H2.

2:3.

2 mol NH3

----------------

3 mol H2.

2:3, not 3:2.

Group 1 metals are explosive when they come into contact with water. If 20.0 grams of potassium were to explode with excess water, how many moles of hydrogen would be produced?​

Answers

Two moles or 78 g of potassium metal reacts with water to give one mole or 2 grams of hydrogen gas. Then 20 g of K will give 0.51 g of hydrogen gas.

What are metal hydroxides?

Metals especially alkali metals and alkaline earth metals are highly reactive towards air and water. By reacting with water these metals produces their corresponding hydroxides.

Potassium reacts with water forms KOH as written below:

[tex]\rm 2K + 2H_{2}O \rightarrow 2 KOH + H_{2}[/tex]

As per this reaction, 2 moles of K produces 1 mole of hydrogen

atomic mass of K = 39 g/mol

mass of 2 K = 78 g

mass of H₂ = 2g

Then mass of H₂ produced from 20 g of K is:

mass of H₂ = (20 × 2) /78 = 0.51 g

Therefore, 0.51 g of hydrogen gas is produced by 20 grams of potassium metal.

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tailoring binding abilities by incorporating oxophilic transition metals on 3d nanostructured ni arrays for accelerated alkaline hydrogen evolution reaction

Answers

The Cr-incorporated Ni catalyst shows optimized OH-binding as well as H-binding energies for facilitating water dissociation and improving HER activity in alkaline media.

Developing efficient and inexpensive electro catalysts for the hydrogen evolution reaction (HER) in alkaline water electrolysis plays a key role in renewable hydrogen energy technology.

The trends in HER activity with respect to the binding energies of Ni-based thin film catalysts by incorporating a series of oxophilic transition metal atoms. It was found that the doping of oxophilic atoms enables the modulation of binding abilities of hydrogen and hydroxyl ions on the Ni surfaces, leading to the first establishment of a volcano relation between OH-binding energies and alkaline HER activities.

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which sector is targeted for the application of hydrogen fuel cells

Answers

The power sector is targeted for the application of hydrogen fuel cells.

What is Hydrogen fuel?

This type of fuel produces electricity through the combination of hydrogen and oxygen atoms. The hydrogen reacts with oxygen across an electrochemical cell and produces electricity, water, and heat in a very small quantity.

Hydrogen-powered fuel cell electric vehicles doesn't have any carbon emission or greenhouse gases such as carbon dioxide etc which depletes the ozone layer and causes global warming.

It emit none of these harmful substance and only emits water and warm air which makes it a very clean fuel thereby causing a reduction in pollution and reducing the risk of respiratory diseases.

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Which example is a biotic factor of an aquarium ecosystem?


A) gravel on the bottom of the aquarium


B) algae growing on the glass



C) plastic plants placed in the gravel



D) rock structure

Answers

An example of a biotic factor of an aquarium ecosystem is an  algae growing on the glass. Option B is the correct answer.

What is a biotic factor?

This refers to a living organism that shapes its environment. The examples of biotic factor that make up fresh water ecosystem are: aquatic plants, fish, amphibians,fungi, bacteria, and protists. and algae.

The biotic factors are gropped into : producers, consumers, and decomposers.

The producers, convert abiotic factors into food. They include plants and algae.The consumers do not make their own food .They consume producers or other consumers to get food energy.The decomposers are the organisms that break down organic matter from dead plants and animals into the inorganic components, for example carbon and nitrogen, which are important for life.

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A 3.5-L sample of helium gas, collected at 0.00°C and 1.00 atm, is compressed into a 0.50-L cylinder. What pressure will the gas exert in the cylinder at 39.1°C?

Answers

The pressure of a gas is directly proportional to its temperature and inversely proportional to its volume.

PV/T = PV/T

(1.00atm * 3.5 L)/ 273k = (P * 0.50L)/(39.1 + 273k)
Do some simple algebra and you will get
P = 8.0 (Note that there should be 2 sigfigs)

The psychological response to aging is negatively influenced by what

Answers

Answer:

isolation, loneliness or psychological distress

Explanation:

In addition, older people are more likely to experience events such as bereavement, or a drop in socioeconomic status with retirement. Sadly these stressors can result in isolation, loneliness or psychological distress in older people. Mental health has an impact on physical health and vice versa.

EARTH SCIENCE
Drag and drop the words into the correct locations.(2 points)
Two astronomers accidentally discovered______, which is evidence of universe expansion that supports the Big Bang theory. This is particularly strong evidence because its temperature is ______. By observing this today, we can see what the universe looked like______?

Background radiation
137,000,000 years ago
not uniform
uniform
13,700,000,000 years ago

SOMEONE PLEASE HELP ME!!...

Answers

Accidental cosmic background radiation, remarkably uniform, billions of years ago.

what is radiation ?

Radiation is a form of energy that is emitted in the form of waves or particles. It is an invisible form of energy that travels through space. Radiation is present everywhere in the environment and is emitted from many sources, both natural and man-made.

Natural sources of radiation include the sun, rocks, soil, and the air. Man-made sources include nuclear power plants, medical devices, and X-ray machines. There are several forms of radiation including alpha, beta, and gamma radiation. Alpha radiation is made up of particles, while beta and gamma radiation consists of electromagnetic waves. Different types of radiation have different properties that make them useful in various applications. For example, gamma radiation is used in medical imaging.

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Help with the following problems attached!!

Answers

1. The mass of8.12 × 10²⁴ atoms of Co is 4.77 × 10^25 g.

2. There are 2.24 x 10²² atoms of carbon in 4.08g of aspirin.

How can the mass be calculated of cobalt?

To calculate the mass of 8.12 × 10²⁴ atoms of Co in grams, we need to know the atomic mass of cobalt (Co) in grams per mole. According to the periodic table, the atomic mass of Co is 58.93 g/mol.

We can calculate the mass of 8.12 × 10²⁴ atoms of Co by using the formula:

mass = (number of atoms) x (atomic mass)

mass = (8.12 × 10²⁴ atoms) x (58.93 g/mol)

mass = 4.77 × 10²⁵ g

So, the mass of 8.12 × 10²⁴ atoms of Co is 4.77 × 10²⁵ g.

Aspirin, also known as acetylsalicylic acid, has the chemical formula C9H8O4. To find out how many carbon atoms there are in 4.08g of aspirin, we can use the formula:

(Mass of aspirin) / (molar mass of aspirin) x (number of moles of C in aspirin)

We know the mass of aspirin is 4.08g and we can look up the molar mass of aspirin, which is 180.159 g/mol. To find the number of moles of C in aspirin, we can count the number of C atoms in the formula of aspirin which is 9 atoms, and then multiply that number by Avogadro's number, which is 6.022 x 10^23 atoms/mol.

So the number of carbon atoms in 4.08g of aspirin is:

4.08g / 180.159 g/mol * (9 atoms × 6.022 x 10²³ atoms/mol) = 2.24 x 10²² atoms

So there are 2.24 x 10²² atoms of carbon in 4.08g of aspirin.

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What chemicals have a saturation concentration less than 5 but greater than 2

Answers

Saturation concentration refers to the highest concentration of a substance that can exist in a solution in equilibrium with its solid or gaseous form. A saturation concentration less than 5 but greater than 2 is a relatively broad range, and many different chemicals could fall within this range depending on the conditions of the solution.

Examples of chemicals with saturation concentration less than 5 but greater than 2 include:

Calcium carbonate, which has a saturation concentration of around 3.5 g/L at room temperature and normal pressure

Iron(III) hydroxide, which has a saturation concentration of around 3.5 g/L at room temperature and normal pressure

Potassium chloride, which has a saturation concentration of around 3.5 g/L at room temperature and normal pressure

Ammonium chloride, which has a saturation concentration of around 2.5 g/L at room temperature and normal pressure

Sodium sulfate, which has a saturation concentration of around 3.5 g/L at room temperature and normal pressure

It's important to note that these are just examples, the saturation concentration of a chemical can vary depending on temperature, pressure, and other factors.

Compare the bond length for NH3, NF3, and PF3. Explain.

Answers

The bond length for NH3, NF3, and PF3 can be compared based on their molecular geometry and the strength of the chemical bonds between the atoms.

NH3 has a bond angle of 107 degrees and a bond length of 1.01 Angstroms. This is due to the presence of a lone pair of electrons on the Nitrogen atom which causes the bond angles to deviate from the ideal tetrahedral angles of 109.5 degrees.

NF3 has a bond angle of 107 degrees and a bond length of 1.1 Angstroms. This is due to the presence of a lone pair of electrons on the Nitrogen atom which causes the bond angles to deviate from the ideal tetrahedral angles of 109.5 degrees.

PF3 has a bond angle of about 101 degrees and a bond length of 1.48 Angstroms. This is due to the fact that the Fluorine atoms are larger than the Nitrogen atoms of NH3 and NF3, and the bond between Phosphorus and Fluorine is stronger and shorter than the bond between Nitrogen and Hydrogen or Nitrogen and Fluorine.

In summary, the bond length of NH3 and NF3 is shorter than that of PF3 due to the smaller size of Nitrogen atoms compared to Phosphorus and the presence of lone pairs on Nitrogen atoms. The bond between Nitrogen and Hydrogen or Nitrogen and Fluorine is weaker than the bond between Phosphorus and Fluorine.

Please help I need help solving this IUPAC name for the compound shown here.

Answers

IUPAC named for the compound shown here is 1- hydroxyl, 3- ethyl, hexane.

What is IUPAC system ?

The International Union of Pure and Applied Chemistry is full form of IUPAC. It is important because it creates a standardized way to name chemical compounds in organic chemistry.

The International Union of Pure and Applied Chemistry recommends using the IUPAC nomenclature of organic chemistry to name organic chemical substances.

The rule of the first point of difference states that the series that includes the lowest number when the first difference occurs is the "lowest."

Thus, IUPAC named for the compound shown here is 1- hydroxyl, 3- ethyl, hexane.

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Which of the following statements about substances X and Y are true? Assume ideal behavior.

Choose one or more:
A. Y is the solvent in this solution.

B. The presence of Y in the solution lowers the vapor pressure of X.

C. If Y were not present, there would be more X particles in the gas above the liquid solution.

D. Pure Y has a higher vapor pressure than pure X.

Answers

The statements about substances X and Y are true are Y is the solvent in this solution, The presence of Y in the solution lowers the vapor pressure of X and if Y were not present, there would be more X particles in the gas above the liquid solution. Therefore, option A, B and C are correct.

What is the solution ?

A mixture in which one substance dissolves in the other is called a solution. The solute is the substance that dissolves. The solvent is the substance that does not dissolve. Salt water is an example of a solution.

In a mixture called a solution, every component is well combined. Solutions can contain solids, liquids, and gases and are regarded as homogenous mixes. A solute and a solvent makeup a solution. Any substance that dissolves in a solvent is referred to as a solute.

Thus, option A, B and C are correct.

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Oxide of the trivalent element contains 31.58% oxygen
Calculate the equivalent, molar and atomic masses of this
element.

Answers

Answer:

In X2​O3​,. Percentage of oxygen by weight = 31.58. Percentage of X by weight = 68.42. Let the atomic weight of X = x. 2x+482x​×100 = 68.42. ∴ x = 51.99.

Explanation/solution in image

Calculate the vapor pressure at 85.0°C of a solution prepared by dissolving 0.300 mol of liquid dibromoethane (C₂H4Br₂, Pº=127 torr)
in 1.80 mol of liquid dibromopropane (C3H6Br2, P=173 torr).
torr

Answers

The vapor pressure at 85.0°C of a solution prepared by dissolving 0.300 mol of liquid dibromoethane the vapor pressure at 85.0°C of a solution prepared by dissolving 0.300 mol of liquid dibromoethane is 164.83 torr.

What is vapor pressure ?

The term vapor pressure is defined as the tendency of a material to change into the vapour state, and it increases with temperature.

For calculating mole fraction of C₂H₄Br₂ as follows

X C₂H₄Br₂ = moles of C₂H₄Br₂ / moles of C₂H₄Br₂ + moles of C₃H₆Br₂

= 0.3 / 0.3 + 1.80

= 0.14

For calculating mole fraction of C₃H₆Br₂ as follows:

XC₃H₆Br₂ =  moles of C₃H₆Br₂ / moles of C₂H₄Br₂ + moles of C₃H₆Br₂

= 1.80 / 2.1

= 0.85

For calculating total vapor pressure as follows:

P total = [ ( 0.14 × 127) + (0.85 × 173) ]

= 17.78 + 147.05

= 164.83 torr

Thus, The vapor pressure at 85.0°C of a solution prepared by dissolving 0.300 mol of liquid dibromoethane the vapor pressure at 85.0°C of a solution prepared by dissolving 0.300 mol of liquid dibromoethane is 164.83 torr.

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If you fill your car tire to a pressure of 33 psi (pounds per square inch) on a hot summer day when the temperature is 35 ∘C (95 ∘F ), what is the pressure (in psi ) on a cold winter day when the temperature is − 17 ∘C (1 ∘F )? Assume no gas leaks out between measurements and the volume of the tire does not change.

Answers

The pressure on a cold winter day would be 16.03 psi.

Pressure law

The pressure law state that the pressure of a gas at constant volume is directly proportional to its temperature. This law can be mathematically expressed as follows:

[tex]P_1/T_1 = P_2/T_2[/tex]

Where [tex]P_1[/tex] = initial pressure of the gas, [tex]T_1[/tex] = initial temperature, [tex]P_2[/tex] = final pressure, and [tex]T_2[/tex] = final temperature.

In this case, [tex]P_1[/tex] = 33 psi, [tex]T_1[/tex] = 35 [tex]^oC[/tex] and [tex]T_2[/tex] = -17 [tex]^oC[/tex]. What we are looking for is [tex]P_2[/tex].

[tex]P_2[/tex] = [tex]P_1.T_2/T_1[/tex]

    = 33 x -17/35

     = 16.03 psi

In other words, at constant volume and without leakage, the pressure in the tire on a cold winter day when the temperature is -17 [tex]^oC[/tex] would be 16.03 psi.

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Calculate to the correct number of significant figures (85.3-21.489)/0.0059

Answers

Answer:

11000

Explanation:

85.3 has 3 significant figures

21.489 has 5 significant figures

0.0059 has 2 significant figures ( as zeros on the left are not significant)

The answer is always rounded off to the least number of decimal places given in the question. Here the least number is two significant figures.

Therefore;

(85.3 - 21.489)/0.0059

= (63.811)/0.0059

= 10815.42

As we have to round off the answer to two significant figures:

= 11000

Please help me with this question (Chemistry -- Stoichiometry)

Answers

The mass in grams of water that are produced when 80. g of NaOH react with 73 g of HCl to form 117 g of NaCl and water is 36.0 g.

What is the equation of the reactions of sodium hydroxide and hydrochloric acid?

The equation of the reactions of sodium hydroxide and hydrochloric acid is given below:

NaOH + HCl ---> NaCl + H₂O

The mole ratio is 1 : 1 : 1 : 1

Moles of NaOH that reacted = 80/40

Moles of NaOH that reacted = 2 moles

Moles of HCl that reacted = 73/36.5

Moles of HCl that reacted = 2 moles

Moles of water produced will be 2 moles

Mass of water = 2 * 18 g/mol

Mass of water produced = 36.0 grams.

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Contains 8.2 mol of oxygen and 8.22 mol of lead

Answers

The mole fraction of oxygen in the cylinder, given that the cylinder contains 8.2 moles of oxygen and 8.22 moles of lead is 0.499

How do I determine the mole fraction of oxygen?

Mole fraction is simply defined as:

Mole fraction of subtance = Mole of sunstance / total mole

Next, we shall determine the total mole in the cylinder. Details below:

Mole of oxygen = 8.22 moles Mole of lead = 8.22 molesTotal mole = ?

Total mole = Mole of oxygen + mole of lead

Total mole = 8.2 + 8.22

Total mole = 16.42 moles

Finally, we shall determine the mole fraction of oxygen in the cylinder. Details below:

Mole of oxygen = 8.22 moles Total mole = 16.42 molesMole fraction of oxygen =?

Mole fraction of oxygen = mole of oxygen / Total mole

Mole fraction of oxygen = 8.2 / 16.42

Mole fraction of oxygen = 0.499

Thus, we can conclude from the calcultions made above that the mole fraction of oxygen is 0.499

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Complete question:

A cylinder contains 8.2 mol of oxygen and 8.22 mol of lead. What is the mole fraction of oxygen in the cylinder?

What is the density of 10.002 g of water at 20°C in the units of g/mL?

Answers

Answer:

the density of 10.002 g of water at 20°C in the units of g/mL is 0.998 g/mL

Explanation:

Density of 10.002g of water at 20°C in g/mL = 0.998 g/mL

Given that:

density of water at 20°C = 0.9982 g/mL

Density = mass / volume ---- ( 1 )

Where :  mass = 10.002 g

              Volume = ?

              Density = 0.9982 g/mL

∴ Volume = 10.002 / 0.9982   = 10.02 mL

back to equation ( 1 )

Density = 10.002 / 10.02 = 0.9982 g/mL ≈ 0.998 g/mL

Which contains a greater number of atoms: 1 mole of sulfur dioxide gas at STP or 1 mole of methane gas (CH4) at
STP? Explain / prove.

Answers

The two mentioned gases have the same number of atoms as they are present at STP.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

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An unknown gas effuses at a rate 1.50 times the rate of COCl₂. What is the molar mass of the unknown gas?

Answers

Answer:

The molar mass of an unknown gas can be determined using the concept of effusion. Effusion is the process of a gas passing through a small hole or porous partition. The rate of effusion of a gas is inversely proportional to the square root of its molar mass. This relationship is described by the Graham's law of effusion.

Explanation:

Graham's law of effusion states that the rate of effusion of a gas is inversely proportional to the square root of its molar mass.

R = k √M

Where R is the rate of effusion, k is a constant, and M is the molar mass of the gas.

If we know the rate of effusion of COCl2 and the rate of effusion of an unknown gas and we know that the unknown gas effuses at a rate 1.5 times the rate of COCl2.

R unknown = 1.5 * R COCl2

We can use this information to find the molar mass of the unknown gas.

M = (R COCl2 / (1.5 * R unknown) )²

If we know the molar mass of COCl2, we can substitute it in the equation and solve for the molar mass of the unknown gas.

It's worth noting that this problem requires you to know the molar mass of COCl2 which is not provided in the question. And also it's important to know that the values of the constant k in the equation for the different gases are not the same, so you need to use the same gas as reference.

Calculate the mass in grams in a sample containing 2.40×10^23 S03 molecules.

Answers

Answer: 31.2 g

Explanation: Given,

2.40 x 10^23 molecules of SO3

number of moles (n) = given number of molecules / total number of molecules

n = 2.4 x10^23/ 6.023 x 10^23

n = 0.39 moles

mass  = molecular mass x number of moles(n)

mass in grams  = 80 (Molecular mass of SO3) x 0.39

mass in grams  = 31.2 g

The measurement of 5342nm is the same length as _____ cm in scientific notation?

Answers

Answer:

Explanation:

5.342 x 10 the power of 7

How to name the compound N2O3 (2 and 3 are subscripts, O is the letter). List the steps.

Answers

Answer:

Explanation:

1. Identify the elements present in the compound. The compound N2O3 contains two elements: nitrogen (N) and oxygen (O).

2. Determine the type of compound. N2O3 is an ionic compound, as it contains two different elements.

3. Write out the full name of the compound. The full name of the compound is dinitrogen trioxide.

4. Identify the subscripts. The subscripts indicate the number of atoms of each element in the compound. In this case, there are two nitrogen atoms (N2) and three oxygen atoms (O3).

5. Assign the proper name. The proper name for N2O3 is dinitrogen trioxide.

Concentration of 20cm³ of sulphuric acid that neutralize 25cm³ of 0.100M of KOH

Answers

Concentration of 20cm³ of sulphuric acid that neutralize 25cm³ of 0.100M of KOH, basically is NaOH. 2NaOH + H2SO4 → Na2SO4 + H2O.

What is sulphuric acid?

Sulfuric acid, also known as H2SO4, is a mineral acid. Mattling acid and Oil of vitriol are other names for sulfuric acid. It is basically corrosive and has a strong acidic nature. It acts as an oxidising and dehydrating agent at higher concentrations. It is a syrupy liquid with no odour and no colour.

Sulphuric acid is extremely acidic. As a result, it is used in the cleaning of metals, the removal of impurities from oil, the manufacture of chemicals - nitric acid, hydrochloric acid, the synthesis of dye, drugs, detergents, explosives, and so on.

Sulfuric acid (CASRN 7664-93-9), also known as hydrogen sulphate, is a strong mineral acid with the formula H2SO4 that is highly corrosive, clear, colourless, and odourless.

Sulfuric acid (H2S04) is a corrosive chemical that is harmful to the skin, eyes, teeth, and lungs. Severe exposure can be fatal. Sulfuric acid exposure may cause harm to workers.

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in the video above, the programmer gives his opinions about r (which is free and open-source) versus expensive commercially available programs. which is the presenter's opinion? I need help with these questions primary trauma from occlusion is excessive occlusal forces on a sound (healthy) periodontium. secondary trauma from occlusion is normal occlusal forces on an unhealthy periodontium previously weakened by periodontitis. group of answer choices a) both statements are true b) both statements are false c) the first statement is true; the second is false d) the first statement is false; the second is true The following equation is being multiplied by the LCD. Complete the multiplication to eliminate the denominatorsx+2/3x - 1/x-2 = x-3/3x(3x)(x-2) [x+2/3x - 1/x-2] = (3x)(x-2) [x-3/3x]The resulting equation is ___ until its repeal in 1885, the labor contract law select one: a. discouraged immigration from non-european countries. b. prevented the formation of labor unions. c. put many new immigrants in debt to american businessmen. d. was an attempt to reform american business practices. e. mandated that each worker sign an individual contract with a company. when creating a storage pool with two different sized disk on windows what will be the size of the storage pool alex is calculating the taxes his parents owe on $20{,}000$ coins of total income. first, he subtracts a deduction worth $5{,}000$ coins from the total income to find the taxable income. next, he calculates $20\%$ of the taxable income to get the initial tax. lastly, he subtracts a credit worth $1{,}000$ coins from the initial tax bill to get the final tax bill. what percentage of the total income is the final tax bill? which act prohibits any discrimination as it relates to pregnancy, including hiring, firing, compensation, training, job assignment, insurance, or any other employment conditions? What makes a hero?Write a paragraph 8-10 sentences Write about events from your own life using a simple plot. Your true story should try to achieve some kind of purpose, such as moving the reader emotionally or showing what's wrong with society. Your assignment should also have a narrow enough focus that you can tell the entire story in under 1,000 words.Your story should include the following elements:An exposition, rising action, a climax, and a conclusionCareful pacing that guides the reader from one event to the nextTransitions to signal shifts in time, mood, and topic What does it mean if an aeroplane carries cargo only Which scenario does NOT represent an additive relationship? A) Mason is five years older than Greg. B) Apples cost $2.50 per pound. C) Bernie's Burgers charges a $3.00 delivery fee for all orders. D) Perla's Pet Shop is offering a $5.00 coupon off any order. 1. a woodworker produces 2 chairs every day. the company that buys the chairs randomly selects the days on which to check the chairs made that day. does this result in a random sampling? yes, because each item has an equal chance of being selected. no, because each group of n items does not have an equal chance of being selected. yes, because each group of n items has an equal chance of being selected. no, because each item does not have an equal chance of being selected. How is analogue data represented in digital systems? How did Confucianism influence Chinese culture and government? Identify the equipment best suited for extinguishing each type of fire.small benchtop fire _________large fire on floor __________clothing fire _________ The mean of a set of data is 4.11 and its standard deviation is 3.03. Find the z score for a value of 10.86. explain how the file system in gui environments acts as the application programming interface (api) that the os provides for accessing bits on the hard drive. describe the process, including the points at which the os has to switch from user mode to kernel mode. you can do so for computer systems in general or a specific os of your choosing. compare this with the way that command line environments perform the same operations. Four research assistants were asked to observe a gamer and count the number of times the gamer exhibited aggressive behaviors during a one hour gaming session. The first research assistant counted five aggressive behaviors, the second recorded eight, the third observed only two, and the fourth observed ten. If we assume that the research assistants are equally accurate in what they observed, what is the mostly explanation for these discrepancies? When a dashboard is shared with a user, that user can edit the dashboard configuration as they see it. T/F