You have a solution of copper sulfate with a volume of 2 dm3. The concentration of the solution is 12 g/dm3. What is the mass of the copper sulfate?

The oxidation state of cobalt (Co) in LiCoO2 is +3. This can be determined by using the oxidation state rules. Oxygen (O) has an oxidation state of -2, and lithium (Li) has an oxidation state of +1. Therefore, the total oxidation state of the compound is equal to the sum of the oxidation states of the individual atoms.

From the formula LiCoO2, we know that there are two oxygen atoms with a total oxidation state of -4 (2 x -2). The oxidation state of lithium is +1, and since the overall charge of the compound is zero, the oxidation state of cobalt must be +3 (+4 - 1).

The oxidation state of an atom in a compound indicates the number of electrons that it has lost or gained. In this case, cobalt has lost three electrons to become positively charged, while oxygen has gained two electrons each to become negatively charged. The oxidation state is an important concept in chemistry as it helps to determine the reactivity and chemical behavior of a compound.

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Equation for Butane Combustion : C₄H₁₀ + 13/2 O₂ → 4CO₂ + 5H₂O

Moles of Oxygen required = 13/2 * 100 kmol/h = 650 kmol/h

Given Data:

Flow rate of Butane = 100 kmol/h

Fraction of Butane Combusted = 0.85

Fraction of Combusted Butane which is completely Combusted = 0.9

Rest of Combusted Butane converted into Carbon Monoxide

Now, Let's solve each point:

1.) Balanced Equations:

Butane Combustion : C₄H₁₀ + 13/2 O₂ → 4CO₂ + 5H₂O

Carbon Monoxide formation : C₄H₁₀ + 5/2 O₂ → 4CO₂ + 5H₂O₂

2.) Theoretical Oxygen required for complete Combustion of Butane:

Given the Butane Combustion equation: C₄H₁₀ + 13/2 O₂ → 4CO₂ + 5H₂O

For every 1 mole of Butane, 13/2 moles of Oxygen is required.

For 100 kmol/h of Butane, moles of Butane per hour = 100 kmol/h

Therefore, moles of Oxygen required = 13/2 * 100 kmol/h = 650 kmol/h

3.) Calculation of Volumetric Flow rate of Air:

Given that, 25% excess combustion air is fed to the process.

Therefore, total moles of air required = moles of theoretical air + (25/100 * moles of theoretical air) = (100/21) * moles of Butane

For 100 kmol/h of Butane, moles of air required per hour = (100/21) * 100 kmol/h = 476.19 kmol/h

Now, Let's convert it to volume in standard cubic meters per minute:

1 kmol of gas at standard temperature and pressure occupies 22.4 m³

Therefore, 476.19 kmol/h of gas occupies 476.19 * 22.4 m³/h or 10,657.56 m³/h

Therefore, 10,657.56/60 = 177.63 m³/min of Air is required.

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According the question the Percent yield is 11.99%

Yield is an economic term referring to the income generated by an investment over a period of time. It is usually expressed as a percentage of the initial investment and is calculated by taking the total income earned and dividing it by the initial investment. Yield is an important measure of the performance of an investment, and is a key factor in determining the attractiveness of an investment. Yields can be calculated for individual investments, or for portfolios of investments. Yields can also be calculated for different types of investments, such as stocks, bonds, and mutual funds. Yields are also used to compare investments with different levels of risk, so investors can make informed decisions about their investments. Yields are affected by a variety of factors, including interest rates, inflation, and market conditions.

The percent yield can be calculated using the formula:

Percent yield = (Actual yield / Theoretical yield) * 100

For Magnesium Chloride, the theoretical yield is 14.87 moles, and the actual yield is 1.78 moles.

Therefore, the percent yield is:

Percent yield = (1.78 / 14.87) * 100 = 11.99%

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3.4 moles of carbon tetrachloride is equivalent to 523.6g.

The mass of a substance can be calculated by multiplying the number of moles in the substance by its molar mass as follows:

mass = no. of moles × molar mass

According to this question, 3.4 moles of carbon tetrachloride is given. The mass can be calculated thus;

molar mass of carbon tetrachloride = 154g/mol

mass = 3.4 moles × 154g/mol

mass = 523.6g

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Answer:

B and C

Explanation:

is it multiple choice question??

Van der Waals forces are the interaction between the molecules and the atoms. It increases with an increase in the molecular size and the number of electrons. Thus, options B and C are correct.

Van der Waals forces are the weak forces of attraction and repulsion present between the atoms and the molecules of the compounds. They are also called London Dispersion Forces and dipole-dipole forces.

An increase in the number of electrons and size of the molecule increases the surface area and the electron cloud which in turn, increases the Van der Waals force.

The intermolecular force increases as in large atoms or molecules the valence are held loosely as they are far from the nucleus or the center of the atom.

Therefore, the size and the electron increase the Van der Waals force.

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Answer:

1.514 moles

Explanation:

For this problem you want to use dimensional analysis and cancel out your molecules of sugar and be left with moles of sugar. We know that 1 mole (of anything) = 6.022 x 10 ^ 23 molecules, so we should use that conversion to help us. Start with 9.12 x 10 ^23 molecules and divide by 6.022 x 10 ^ 23 molecules, and you will be left with moles.

Hope this helps!

Answer:

37

Explanation:

( 98.6 - 32 ) × 5(100c) ÷ 9(180f) = 37

Answer:

D) The mass of the reactants and products is equal and is not dependent on the physical state of the substances.

Explanation:

I took the quiz on Edgenuity

The best description of law of conservation of mass is the mass of the reactants and products is equal and is not dependent on the physical state of the substances. Thus, option D is correct.

Law of conservation stats that the any closed in which mass or energy transfer is takes placed the sum of energy and mass before or after transfer is remain constant.The mass of the reactants and products is equal and is not dependent on the physical state of the substances.

It means that in terms of physics if any closed or open system if mass or energy transfer is takes place from the system the total energy i.e in system or surrounding the total energy will always constant. Law of conservation stats that the any closed in which mass or energy transfer is takes placed the sum of energy and mass before or after transfer is remain constant.

Therefore,the best description of law of conservation of mass is the mass of the reactants and products is equal and is not dependent on the physical state of the substances. Thus, option D is correct.

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The entire energy of all internal molecular motion makes up an object's heat.The thermal energy or average heat of the molecules in a substance is measured by temperature.It is a measurement of the quantity of atoms times the energy that each atom possesses.

How do heat and temperature relate to one another?

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Answer:

To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = - log [H3O+].

Example: Find the pH of a 0.0025 M HCl solution.

Carbon dioxide is a chemical compound made up of molecules that all have one carbon atom covalently double bonded to two oxygen.

Carbon dioxide is relaxed of one carbon atom covalently bonded to two oxygen atoms. It is a gas (at standard temperature and pressure) that is expired by animals and utilized by plants during photosynthesis. Carbon dioxide, CO2, is a chemical compound claim of two oxygen atoms and one carbon atom. Carbon dioxide is a one-carbon compound with the formula CO2 in which the carbon is nuts about to each oxygen atom by a double bond. A molecule of carbon dioxide (CO2) is made up of one carbon atom and two oxygen atoms. Carbon dioxide is the main greenhouse gas that helps to trap heat.

So we can conclude that Carbon dioxide is a molecule with the molecular formula CO2. The linear molecule comprises a carbon atom that is doubly bonded to two oxygen atoms.

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The heterosphere is the layer of the atmosphere in which the gases are

poorly mixed because of the gravity influence.

This is a part of the atmosphere which is characterized by gases being

separated out as a result of diffusion. This is usually pronounced with

increasing altitude in the atmosphere.

The gases in the layer are poorly mixed as a result of gravity which causes

gases of different weight to separate into layers.

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Water molecules are created when one oxygen molecule joins with two hydrogen molecules. Water molecules are created when one oxygen molecule joins with two hydrogen molecules.

Two hydrogen molecules (H) and one oxygen molecule (O) split throughout the reaction. These atoms combine in this specific manner to form two water molecules, H20. To illustrate what happens in this reaction, create a particle diagram. The atoms need energy to react in order to break their bonds and create a new substance. Each hydrogen atom has a positive charge of one after the bonds are broken, but each oxygen atom has a negative charge of two. Water is produced when two hydrogen atoms join with one oxygen atom. No electrical charge exists in water.

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#1

Used in making of cooking utensils and other architectures.

Used in making heat utensils like heater,oven etc.

Used in making different utensils .

Bronze:-

Used in making medals.

Magnalium:-

Used in making aircraft parts.

#2

The following equations to calculate the resolution, selectivity factor, and column length:

(a) Resolution = \(w_1 / (w_2 - w_1)\)

(b) Selectivity factor = \(w_1 / w_2\)

(c) Column length =\(L / (2 * pi * D / w_1)\)

(d) Time required = \(Q * L / (4 * pi * D^2 / w_1)\)

The resolution is defined as the ratio of the width of the peak for the two components to the difference in their retention times.

The selectivity factor (a) is defined as the ratio of the width of the peak for the two components to their retention times.

The length of the column (L) is the distance between the inlet and the outlet of the column.

The flow rate (Q) is the volume of the mobile phase that passes through the column per unit time.

We can start by finding the retention times of the two components, We can use the equation:

Ti = h/k

here h is the column height and k is the distribution coefficient of the component.

We can also find the width of the peak for each component, We can use the equation:

w = 2 * π * D / L

here D is the diameter of the column.

Next, we can use the following equations to calculate the resolution, selectivity factor, and column length:

(a) Resolution = \(w_1 / (w_2 - w_1)\)

(b) Selectivity factor = \(w_1 / w_2\)

(c) Column length =\(L / (2 * pi * D / w_1)\)

(d) Time required = \(Q * L / (4 * pi * D^2 / w_1)\)

We can substitute the values of the parameters we have found into these equations to solve for the values of the resolution, selectivity factor, and column length.  

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Answer:

there you go man

Explanation:

1. In order to answer this one and the next one, we will use mass percentage as our guide, since every compound has a mass percentage for each element, and this is found by checking the total mass and the separate masses of each element, for example, MgF2, the mass percentage is 39% for Mg and 61% for F2, this is due to their molar mass, 24g for Mg and 38g for F2

We have 27.1 g of Mg, and this will always correspond for 39% of the total mass of the compound, so we can do the following math:

100% = x

39% = 27.1g

x = 69.5 grams is the total mass of MgF2, now we only have to subtract the value of Mg and then we will have F2

69.5 - 27.1 = 42.4 grams, this is the mass of Fluorine

2. The same step by step from the previous question, 36% of the total mass is Al and 64% is S, but this question has a little difference, now we have the mass of the compound, but the process is very similar

100% = 50.2 grams

64% = x grams

x = 32.1 grams, which can be considered as letter A

Answer:

data given

molarity 3.2m

moles 50mol

Required volume

Explanation:

from

molarity =mole/volume

3.2=50/v

v=15.62

:.volume is15.62dm^3

Gallium Nitrite your welcome

A binary III/V direct bandgap semiconductor called gallium nitride is ideally suited for high-power transistors that can function at high temperatures. It has been widely utilized in light-emitting diodes (LED) since the 1990s. Its chemical formula is Ga(NO₂)₃.

Blu-ray discs are read using a blue light that gallium nitride emits. Gallium nitride is also utilized in lasers, photonics, RF components, and semiconductor power devices. GaN will be used in sensor technology in the future.

Gallium nitride power amplifiers are perfect for microwave and terahertz (ThZ) devices, such as imaging and sensing, the aforementioned future market, due to their capacity to operate at significantly higher temperatures and voltages than gallium arsenide (GaAs) transistors.

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70.9-gram sample of \(Cl_{2}\) gas will occupy Opton C. 22.4 liters at STP.

To determine the volume occupied by the sample of \(Cl_{2}\) (g) at STP, we can use the ideal gas law equation, PV = nRT

where P = pressure

V = volume

n = number of moles

R = ideal gas constant

T = temperature.

At STP (Standard Temperature and Pressure), the pressure is 1 atmosphere (atm) and the temperature is 273.15 Kelvin (K).

First, calculate the number of moles of \(Cl_{2}\) (g) using its molar mass. The molar mass  \(Cl_{2}\) is 70.9 grams/mol.

Number of moles (n) = mass (m) / molar mass (M)

n = 70.9 g / 70.9 g/mol

n = 1 mol

Now, we can calculate the volume using the ideal gas law:

V = (nRT) / P

V = (1 mol * 0.0821 L·atm/mol·K * 273.15 K) / 1 atm

V ≈ 22.4 L

Therefore, the correct answer is C. 22.4 L.

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Answer:

Ionic Compound

Explanation:

1) NaBr

2) CaCl2

3) MgS

4) AlO

5) Li3P

6) Cs3N

7) KI

8) BaF2

9) RbNO2

10) BaO

11) Potassium oxide

12) Magnesium iodide

13) Aluminum chloride

14) Calcium bromide

15) Sodium nitride

16) Lithium fluoride

17) Barium phosphide

18) Dicesium sulfide

19) Strontium fluoride

20) Sodium chloride

Hope this helps!!

The chlorine element is present in group 7.

The elements which has 7 valence electrons , is kept in group 7.

1) Chlorine (Cl):

The atomic number of chlorine is 17 and its electronic configuration is 2,8,7. It has 7 valence electrons. Hence, it will be kept in group 7.

2) Oxygen (O):

The atomic number of oxygen is 8 and its electronic configuration is 2,6.

It has 6 valence electrons. Hence, it will be kept in group 6.

3) Lithium (Li)

The atomic number of chlorine is 3 and its electronic configuration is 2,1. It has 1 valence electrons. Hence, it will be kept in group 1.

4) Calcium (Ca):

The atomic number of calcium is 20 and its electronic configuration is 2,8,8,2. It has 2 valence electrons. Hence, it will be kept in group 2.

Therefore, chlorine element will be kept in group 7.

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Answer:

my guess would be limestone disolving in water

Explanation:

Answer:

It is Limestone rocks dissolving in water

Explanation:

I did same exact quiz and I got it correct

Answer:

B. No more powder will dissolve in the water.

Explanation:

If a lot of powder is added to the water, then a fully saturated solution would be created. This means that no matter how much more powder is added or how strong the mix is shaken, no more powder will disolve. The powder will instead remain in solid form in the solution.

Answer:

Heat up the water first because it increases solubility of the powdered mix.

Explanation:

Took the test on Edg. Hope this helps!! :)

40 seconds long it take the same volume SO₂ to diffuse under the same condition.

Given that,

A volume of methane diffuses in 20 seconds.

We have to find how long will it take the same volume of SO₂ to diffuse under the same condition when CH₄ = 16 and SO₂ = 64

We know that,

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

So,

By applying the Graham's law,

\(\frac{r_1}{r_2} =\sqrt{\frac{M_2}{M_1} }\)

\(\frac{r(SO_2)}{r(CH_4)} =\sqrt{\frac{M(CH_4)}{M(SO_2)} } = \frac{t(CH_4)}{t(SO_2)}\)

Where t(SO₂) = x, M(SO₂) = 64

t(Ch₄) = 20 sec, M(Ch₄) = 16

So,

\(\frac{t(SO_4)}{20} = \sqrt{\frac{64}{16} }\)

t(SO₄) = 20 × \(\frac{8}{4}\)

t(SO₄) = 40 seconds.

Therefore. 40 seconds long it take the same volume SO₂ to diffuse under the same condition.

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The term mole concept is used here to determine the moles of ammonia. The number of moles of ammonia which can be make from 6.20 moles of N₂ is 12.4.

One mole of a substance is defined as that quantity of it which contains as many entities as there are atoms exactly in 12 g of carbon - 12. The formula used to calculate the number of moles is:

Number of moles = Given mass / Molar mass

You need one nitrogen atom to produce ammonia. Here we can see that there are two nitrogen atoms in N₂.

One mole of any substance contains Avogadro number of molecules. A mole is defined as the mass of the substance which consists of the equal quantity of basic units.

The number of moles of ammonia from 6.20 moles of N₂ is:

6.20 × 2 = 12.4

Thus the number of moles is 12.4.

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The current involved is 44.7 A

In an electrolytic reaction, we have the situation in which one specie is oxidized and the other specie is reduced in the electrochemical reaction. We have the reaction that occurs as;

2Cl^-(aq) ------> Cl2(g) + 2e

Now;

If 2 * 96500 C liberates 22.4 dm^3 of Cl2

x C liberates 20dm³ of chlorine gas at STP

x =  2 * 96500 C *  20dm³/24 dm³

x = 160833.33 C

Now

Q = It

Q = quantity of electricity

I = current

t = time = 1 hour or 3600 s

I = Q/t =  160833.33 C/ 3600 s

I = 44.7 A

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The mass of solution is equivalent to the mass of the solute and solvent.

The material whose dissolves is known as a solute, as well as the substance

The solute is dissolved to produce a solution, is known as a solvent.

Solution is made by solvent , solute also. So, by adding mass of solvent and solute mass of a particular solution could be found.

It can be expressed as:

Mass of solution = mass of solute + mass of solvent

Therefore, the mass of solution is equivalent to the mass of the solute and solvent.

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Answer:

b

Explanation:

got it wrong on edge2020

Answer:

its c because the northern and southern hemisphere get the same amount of energy from the son in march