What are the 3 causes of Corrosion?

Answer:

Mechnical weathering

Explanation:

Answer:

D edge 2021 ;)

Explanation:

The answer is 80N

(hope this helps you!!!)

For the first reaction, a compound HI was broken down to two simpler molecules H₂ and I₂.

It means that the first reaction is classified as a decomposition reaction.

For the second reaction, something similar happens, sodium chloride is broken down to sodium and chlorine.

The second reaction is classified as a decomposition reaction.

For the third reaction, there is a double susbtitution, carbonate is separated from magnesium and then linked with hydrogen, and chloride is separated from hydrogen and then linked with the magnesium.

It means that the third reaction is a double displacement reaction.

For the fourth reaction, sulfate is separated from hydrogen and then linked with zinc.

It means that the fourth reaction is a simple displacement reaction.

For the fifth reaction, nickel and chlorine form nickel chlorine, which is a more complex molecules.

It means that the fifth reaction is a synthesis reaction.

For the sixth reaction, calcium carbonate is broken down to calcium oxide and carbon dioxide, which are simpler molecules.

It means that sixth reaction is a decomposition reaction.

For the seventh reaction, there is a double substitution from the reactants to form the products.

It means that this is a double displacement reaction.

For the last reaction, two simpler molecules form a more complex molecule.

It means that this is a synthesis reaction.

Answer:

What's the gas given in the question??

Step 1 - Understanding solubility of salts and gases

Solubility is the propertie of a substance to mix itself with another substance. It may happen in a lot of solvents, but we usually talk about solubility in water.

The solubility of a substance will depend on how strongly it interacts with water. In the case of a salt (such as LiCl) we can expect higher solubilities than in the cases of gases. That's because gases do not interact quite strongly with water.

Salts, on the other hand, may dissociate in water to form ions, which interact very strongly with water due to their charge. Not all salts are water-soluble though. It depends on some other features as well. But LiCl, as well as all chlorides (such as NaCl, KCl, and so on) are very soluble in water.

The solubility of salts usually increases with temperature (there are some expceptions to this general rule) whereas the solubility of gases decrease with temperature:

Step 2 - Using solubility to solve the problem

As we just saw, the solubility of a gas decreases with temperature, while the solubility of a salt increases with temperature.

H2 is a gas and LiCl is a solid (all ionic compounds are solid at room temperature), therefore we should expect that by warming the solution up to 75°C, the solubility of H2 will be decreased and of LiCl will be increased.

The result is that H2 gas will scape the solution and we'll see a lot of bubbles, whereas LiCl will remain dissolved in the solution. The correct answer is therefore alternative b) Gaseous H2 bubbles out of the solution.

The following for the substance, statement  1) It will also change from a solid to a liquid at 24 degrees Celsius while the solid loses energyis the only accurate statement among the given options.

Based on the information provided, we can determine the following statements to be true for the substance with a freezing point of 24 degrees Celsius:

When a substance reaches its freezing point, it transitions from a solid to a liquid state. This transition occurs as the solid loses energy and its particles gain enough kinetic energy to break the intermolecular forces holding them in a fixed arrangement.

2) It will also change from a solid to a liquid at 24 degrees Celsius while the solid gains energy.

This statement is incorrect. The process of transitioning from a solid to a liquid occurs as the solid loses energy, not gains energy. The particles in the solid state require a reduction in energy to break their fixed positions and transition into the more mobile liquid state.

3) It will also change from a solid to a gas at 24 degrees Celsius while the solid loses energy.

This statement is incorrect. The transition from a solid to a gas is known as sublimation and occurs when the solid directly converts into a gas without passing through the liquid state. It typically happens at temperatures above the substance's boiling point, not its freezing point. Therefore, at 24 degrees Celsius, it is unlikely for the substance to change from a solid to a gas.

4) It will also change from a solid to a gas at 24 degrees Celsius while the solid gains energy.

This statement is incorrect for the same reasons explained above. The transition from a solid to a gas generally occurs at temperatures above the substance's boiling point, not at its freezing point. Additionally, the process requires the solid to gain energy, not lose energy.

In summary, statement 1 is the only accurate statement among the given options.The correct statement is 1.

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These substances have dispersed particles that are large enough to scatter light, making the beam visible. Therefore, out of the options provided, a mixture that scatters light is an example of a colloid. Option B)

A colloid is a type of mixture in which particles are dispersed throughout a medium, creating a homogeneous appearance. Unlike solutions, where the particles are completely dissolved, and suspensions, where the particles settle out, colloids have particles that are larger than those in solutions but smaller than those in suspensions. One characteristic of colloids is that they can scatter light due to the size of the particles. This scattering of light is known as the Tyndall effect. Examples of colloids include milk, fog, and aerosol sprays. These substances have dispersed particles that are large enough to scatter light, making the beam visible. Therefore, out of the options provided, a mixture that scatters light is an example of a colloid. Therefore option B) is correct

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Note Complete Question

which is an example of a colloid?

a mixture that settles out,

b mixture that scatters light,

c mixture that is separated by filtration,  

d salt and water mixture?

To determine the enthalpy of reaction for the given reaction, use Hess's Law, which states that the total enthalpy change of a reaction is independent of the pathway between the initial and final states.

Break the given reaction into a series of steps for which the enthalpy changes are known or can be measured experimentally.

Add the enthalpy changes of each step to determine the overall enthalpy change for the reaction.

For example, determine the enthalpy of formation for A₂X₄(l), X₂(g), and AX₃(g) and use them to calculate the enthalpy of reaction for the given equation.

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Answer:

31,380 Joules

Explanation:

Given Data:

Mass = m = 100 g

Temperature 1 = = 25 °C

Temperature 2 = = 100 °C

Specific Heat Constant = c = 4.184

Change in Temp. = ΔT = 100 - 25 = 75 °C

Required:

Heat = Q = ?

Formula:

Q = mcΔT

Solution:

Q = (100)(4.184)(75)

Q = 31, 380 Joules

Hope this helped!

~AH1807

Answer:

\(\Large \boxed{\sf 31400\ J}\)

Explanation:

Use formula

\(\displaystyle \sf Heat \ (J)=mass \ (g) \times specific \ heat \ capacity \ (Jg^{-1}\°C^{-1}) \times change \ in \ temperature \ (\°C)\)

Specific heat capacity of water is 4.18 J/(g °C)

Substitute the values in formula and evaluate

\(\displaystyle \sf Heat \ (J)=100.0 \ g \times 4.18 \ Jg^{-1}\°C^{-1} \times (100\°C-25\°C)\)

\(\displaystyle Q=100.0 \times 4.18 \times (100-25 )=31350\)

The mass of the asteroid is C. 1.2 x \(10^{12}\) Kg

To find the mass of the other asteroid, we can rearrange the equation for the gravitational force between two objects:

F = (G * m1 * m2) / \(r^{2}\)

where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two asteroids, and r is the distance between them.

Given that the distance between the asteroids is 75000 m, the force of gravity between them is 1.14 N, and one asteroid has a mass of 8 x \(10^{7}\) kg, we can substitute these values into the equation and solve for the mass of the other asteroid (m2):

1.14 N = (6.67430 × \(10^{-11}\) N \(m^{2}\)/\(Kg^{2}\) * 8 x \(10^{7}\) kg * \(m2\)) / \((75000 m)^{2}\)

Simplifying and solving the equation, we find that the mass of the other asteroid (m2) is approximately 1.2 x \(10^{12}\) kg. Therefore, Option C is correct.

The question was incomplete. find the full content below:

Two asteroids are 75000 m apart one has a mass of 8 x \(10^{7}\) kg if the force of gravity between them is 1.14 what is the mass of the asteroid

A. 3.4 x \(10^{11}\) kg

B. 8.3 x \(10^{12}\) kg

C. 1.2 x \(10^{12}\) kg

D. 1.2 x \(10^{10}\) kg

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Answer: Titanium dioxide

Yes, it is possible to identify the liquid, and the density of the liquid is closest to 0.889 g/cm³ so the liquid is most likely tetrahydrofuran.

To calculate the density of the unknown liquid, we use the formula:

Density = Mass / Volume

Substituting the given values, we get:

Density = 682. g / 0.767 L

Density = 888.5 g/L

Rounding to three significant digits, the density of the unknown liquid is 889 g/L.

Using the information provided in the question, we can compare the density of the unknown liquid to the known densities of the listed chemicals. The densities (in g/cm³) of the chemicals are:

Dimethyl sulfoxide: 1.092

Acetone: 0.790

Diethylamine: 0.707

Tetrahydrofuran: 0.889

Carbon tetrachloride: 1.594

Comparing the density of the unknown liquid to the known densities, we see that it is closest to the density of tetrahydrofuran, which is 0.889 g/cm³. Therefore, it is likely that the unknown liquid is tetrahydrofuran.

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Answer:

             287.30 g of FeCO₃

Solution:

The Balance Chemical Equation is as follow,

                           FeCl₂ + Na₂CO₃    →    FeCO₃ + 2 NaCl

Step 1: Calculate Mass of FeCl₂ as,

                            Molarity  =  Moles ÷ Volume

Solving for Moles,

                            Moles  =  Molarity × Volume

Putting Values,

                            Moles  =  2 mol.L⁻¹ × 1.24 L

                           Moles  =  2.48 mol

Also,

                            Moles  =  Mass ÷ M.Mass

Solving for Mass,

                            Mass  =  Moles × M.Mass

Putting Values,

                            Mass  =  2.48 mol × 126.75 g.mol⁻¹

                            Mass =  314.34 g of FeCl₂

Step 2: Calculate Mass of FeCO₃ formed as,

According to equation,

          126.75 g (1 mole) FeCl₂ produces  =  115.85 g (1 mole) FeCO₃

So,

               314.34 g of FeCl₂ will produce  =  X g of FeCO₃

Solving for X,

                     X =  (314.34 g × 115.85 g) ÷ 126.75 g

                     X =  287.30 g of FeCO₃

Answer:

aluminium is all of isotope with 14 neutrons .

The rate expression is k [BF₃]²[NH₃], overall order is 3, rate constant k is 1.13 × 10⁻³ mol⁻² dm⁶ s⁻¹.

The rate expression for this reaction can be written as:

Rate = k [BF₃]^m[NH₃]^n

The method of initial rates can be used to calculate the values of m and n. When we compare experiments 1 and 2, notice that halving the concentration of [NH3] reduces the initial rate of reaction. This suggests that the reaction is first order in terms of [NH3], implying that n = 1.

When comparing experiments 1 and 3, notice that increasing the concentration of [BF3] by a factor of 2.5 increases the initial rate of reaction by a factor of 9.39 (i.e., 2.13/0.227). This shows that the reaction is about second order in relation to [BF3], i.e., m 2.

Therefore, the rate expression for the reaction is:

Rate = k [BF₃]²[NH₃]

The overall order of the reaction is m + n = 3.

Using the data from experiment 4, substitute the values and solve for k:

Rate = k [BF₃]²[NH₃]

1.02 × 10-¹ = k (3.00 × 10⁻¹)² (1.00 x 10⁻¹)

k = 1.02 × 10-¹ / (3.00 × 10⁻¹)² (1.00 x 10⁻¹)

k = 1.13 × 10⁻³ mol⁻² dm⁶ s⁻¹

Therefore, the rate constant k is 1.13 × 10⁻³ mol⁻² dm⁶ s⁻¹.

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Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Thus option C is correct option.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

Giant planet atmospheres have layers of clouds and aerosols (tiny liquid droplets) made from different chemicals because different chemicals condense at different temperatures.

Therefore,  option C is correct option.

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At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

1: Write the balanced chemical equation:

\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)

2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.

Initial:

\(C_O\)(g) = 0.3500 mol

\(Cl_2\)(g) = 0.05500 mol

\(C_OCl_2\)(g) = 0 mol

Change:

\(C_O\)(g) = -x

\(Cl_2\)(g) = -x

\(C_OCl_2\)(g) = +x

Equilibrium:

\(C_O\)(g) = 0.3500 - x mol

\(Cl_2\)(g) = 0.05500 - x mol

\(C_OCl_2\)(g) = x mol

3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:

Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]

4: Substitute the given equilibrium constant (Kc) value into the expression:

1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)

5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:

1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x

6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.

7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.

8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):

\(Cl_2\)(g) = 0.05500 - x

9: Calculate the value of \(Cl_2\)(g) at equilibrium:

\(Cl_2\)(g) = 0.05500 - x

\(Cl_2\)(g) = 0.05500 - (positive value of x)

10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.

Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

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Answer:

Magnesium loses it's two electrons and Oxygen gains two electrons. Magnesium is now a cation and Oxygen is now an anion. Both become stable.

Explanation:

The type of electron transfer which happens between the Mg and O atom is a complete transfer of electrons from the Mg atom to the O atom in an ionic bond.

The most electropositive electron usually is usually the donor while the most electronegative elements is the acceptor.

As evident in the case above;

Ultimately, an ionic bond is formed between the Mg and O atoms.

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Answer:35.437 mL

Explanation:

Combined gas law

P1V1/T1 = P2V2/T2

P1= 475 torr

V1= 54 mL

T1= 260.15 Kelvin

T2= 273.15 Kelvine

P2= 760 torr

V2=  

V2=P1V1T2/(T1P2) m

V2= 475 X 54 X 273.15 / (260.15 X 760) =35.437 mL

Answer:

5.67 + 0.00032 = 5.67032

Usually for decimal answers, we write 2 digits that come after decimal. We can't write all the numbers that come after the decimal because sometimes it can go on for infinte times, so we write the 2 numbers that come after decimal. So, 5.67 is the answer.

5.7 is also right if you round off the answer but 5.67 is more accurate.

Hope this helped!

Pls mark brainliest

Answer:

For the question given, this shows that the answer is in 2 d.p. (2 decimal places). This means that the final answer has been rounded to 2 numbers after the decimal point!

We know that it would be 5.67 as the number after the 7 is 0, this means that the answer would be rounded down or in other terms the 7 would stay the same.

When answering a question, most of the time we would be told what decimal place to round the number to!

Hope this helps, have a lovely day! :)

The molecular formula for a molecular compound's molecular formula lists the variety of atoms that make up the molecule. The name of the compound (Co(ClO₃)₄(NO₂))Cl is tetrachloridobis(nitrito-O)cobalt(III) chloride.

The name or the formula of the following compounds are:

The name of the compound (Co(ClO₃)₄(NO₂))Cl is tetrachloridobis(nitrito-O)cobalt(III) chloride.

The name of the compound K(Co(SO₄)(NH₂CH₂CH₂NH₂)₂(CN)) is potassium bis(ethylenediamine)dihydroxidocyanidocobaltate(III) sulfate.

The formula of the compound sodium carbonyldiisothriocyanatotrinitritochromate(III) is Na[Cr(NCS)₂(NO₂)₃(CO)].

The formula of the compound amminediaquatrihydroxidochromium(VI) nitrate is [Cr(OH)₄(NH₃)₂(H₂O)₂]NO₃.

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The standard reduction potential of the Cr³+/Cr electrode is -0.46V. None of the option is correct.

To determine the standard reduction potential of the Cr³+/Cr electrode, we can use the Nernst equation, which relates the standard reduction potential to the cell potential under non-standard conditions. The Nernst equation is given by:

E = E° - (0.0592/n) * log(Q)

where E is the cell potential, E° is the standard reduction potential, n is the number of electrons transferred in the half-reaction, and Q is the reaction quotient.

In this case, we have the standard potential of the cell as −0.60V. We know that the standard reduction potential of the Sn/Sn²+ electrode is -0.14V. Therefore, the reduction potential of the Cr³+/Cr electrode can be calculated as:

E = -0.60V - (-0.14V)

E = -0.60V + 0.14V

E = -0.46V

Therefore, the standard reduction potential of the Cr³+/Cr electrode is -0.46V.

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Answer: The final pressure inside the tank is 8.41 kPa.

Explanation: We can use the combined gas law to solve this problem, which relates the pressure, volume, and temperature of a gas:

(P1V1)/T1 = (P2V2)/T2

where P1, V1, and T1 are the initial pressure, volume, and temperature, respectively, and P2, V2, and T2 are the final pressure, volume, and temperature, respectively.

We are given P1 = 25.0 kPa, T1 = -50 C = 223 K, and V1 is unknown. We also know that the temperature decreases by a factor of three, so T2 = T1/3 = 223/3 K.

To find V2, we need to assume that the steel container is rigid and its volume remains constant. Therefore, V1 = V2, and we can cancel out the volume from the equation:

P1/T1 = P2/T2

Substituting the values, we get:

P2 = P1 * T2 / T1 = 25.0 * (223/3) / 223 = 8.41 kPa

Therefore, the final pressure inside the tank is 8.41 kPa.

Answer:

So if pressure of a gas is increased by 25%, the volume of a gas is decreased by 25%.

Explanation:

Answer:

D

Explanation:

Have a great day and hope this helps!

Convection is the movement of fluid (this can wether be liquid or gas) and as they move, they carry heat along with them.

Answer:

Convection

More info:

Heat transfers include the following: Conduction, Convection, and Radiation.

I am open to corrections if I accidentally included false information :).

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Answer:

C.

Mercury and Venus

Explanation:

It is because none of them have moons and barely have atmospheres due to how close they are to the sun.

Answer:

mcmmkcmkmec

Explanation:

Answer:

The velocity would be if m was meters +1200

Explanation:

im smart

Answer:

Explanation:

As a result, the reaction of propane (C H) 3 8 and oxygen should produce carbon dioxide, water, and heat as products, and the balanced chemical equation will be: C H3 8 + 5O2 3CO2 + 4H O2 + heat. Reactants have the next highest potential power level when compared to materials.

Answer:

water and carbon dioxide

Explanation:

Propane undergoes combustion reactions in a similar fashion to other alkanes. In the presence of excess oxygen, propane burns to form water and carbon dioxide.

I hope this helps!

Answer:

B, 2.22×10^22 molecules

Explanation:

Given PV=nRT, n=PV/RT

n=103.7×1.0/8.314×(65+273.15)

= 0.0368858... moles

Given n= number of particles/avogadros number

number of particles=n×avogadros number

number of particles = 0.03688...×6.02x10^23

= 2.22×10^22 molecules