Which is mainly responsible for preventing erosion?

A) Mining
B) Farming
c) Rooting of Plants
D) Logging

Answer:

water

Explanation:

I'm not sure though

Answer:

The correct answer is 0.52 moles.

Explanation:

Based on the given question, 37 grams of magnesium reacts with 38 grams of HCl to produce MgCl2 or magnesium chloride. The reaction is:  

Mg (s) + 2HCl (aq) ⇒ MgCl2 (aq) + H2 (g)

There is a need to find the theoretical yield in moles of MgCl2. The formula for calculating the no. or moles is mass/molar mass. Therefore, moles of magnesium is 37/24 = 1.54 and moles of HCl will be 38/36.5 = 1.04.  

From the reaction it is clear that one mole of magnesium reacts with two moles of HCl, as lesser quantity of HCl is present in the given case, therefore, HCl will be the limiting reagent.

Now theoretical moles of magnesium chloride will be,  

= moles of HCl / 2

= 1.04 / 2  

= 0.52 moles

Answer:

whats the question in this

Explanation:

34 grams of carbon react with an unlimited amount of H₂O. The reaction is C + H₂O → CO + H₂. The ending substance is H₂.

The chemical element carbon has the atomic number six and the letter C assigned to it. It has a tetravalent atom, which means that four of its electrons can be used to create covalent chemical bonds. It is nonmetallic.

The periodic table's group 14 includes it. The crust of the Earth contains barely 0.025 percent carbon. The nucleus of a carbon atom is made up of six protons and six neutrons, and it is encased in six electrons.

The first two electrons must occupy the innermost atomic orbital according to quantum mechanics, whereas the other four electrons have wave functions that only partially fill the second standard and three second primary orbitals.

Thus, 34 grams of carbon react with an unlimited amount of H₂O. The ending substance is H₂.

To learn more about carbon, follow the link;

https://brainly.com/question/3049557

#SPJ1

28.9  grams of AlCl3 are present in 205 grams of an aqueous solution that is 13.8 % by weight AlCl3.

Aqueous is a word used to describe a water-based system. The term aqueous can also refer to a solution or combination in which water serves as the solvent. The type of a substance's chemical bonding determines whether or not it forms an aqueous solution.

When a material dissolves in water, the symbol (aq) is appended to its chemical name. Many ionic chemicals and hydrophilic (water-loving) entities dissolve in water.

Table salt, for example, is dissolved in water and diffuses into ions to generate Na+(aq) and Cl- (aq). Hydrophobic, or water-averse, substances do not dissolve in water or produce aqueous solutions. There will be no dissociation if oil and water are mixed.

The weight of the aqueous solution = is 205 grams.

Percentage of  AlCl₃  = 13.8%

Therefore, the weight of  AlCl₃  by gram =

13.8% of the solution

= 13.8 % × 205

= 28.9g

Therefore the weight of  AlCl₃  in the aqueous solution will be 28.9g

Read more about the aqueous solution, here

https://brainly.com/question/26856926

#SPJ1

Sodium carbonate, also known as washing soda or soda ash, has a wide range of applications. Sodium carbonate can be naturally occurring or synthetically produced through various methods, including the Solvay process, which is the most common method of industrial production.

Sodium carbonate, also known as washing soda or soda ash, has many uses, including:

1) Cleaning agent: Sodium carbonate is an effective cleaning agent due to its alkaline nature. It is used in laundry detergents and household cleaners to remove stains and grease from clothes and surfaces.

2) Industrial applications: Sodium carbonate is used in a variety of industrial applications. It is used in the production of glass, pulp and paper, and soaps and detergents. It is also used as a water softener and pH regulator in chemical processes.

Learn more about Sodium Carbonate at

brainly.com/question/31344166

#SPJ1

Answer:

lemme guess is it transportation??

Answer:

Explosive eruptions from Composite or strato volcano

Explanation:

since they have multiple holes of exit, they can get pretty explosive.

Answer:

5 is the perfect Ans for this

Heavy rainfall causes a landslide. Hence, option A is correct.

A landslide is defined as the movement of a mass of rock, debris, or earth down a slope.

Water can trigger landslides and mudslides because it alters the pressure within the slope, which leads to slope instability.

Consequently, the heavy water-laden slope materials (soil, rock, etc.) will succumb to the forces of gravity.

Hence, option A is correct.

Learn more about the landslide here:

https://brainly.com/question/16151931

#SPJ1

Answer:

The correct answer is "α-helices only use intrachain hydrogen bonds and β-sheets can use either intrachain or interchain hydrogen bonds".

Explanation:

Hydrogen bonding are essential forces for the formation of the secondary structures of proteins. The alpha helix is a coiled secondary structure that is stabilized only by intrachain hydrogen bonds, which are formed between the NH and CO groups of the main chain. On the other hand,  β-sheets can use either intrachain or interchain hydrogen bonds for its stabilization. Adjacent chains in β-sheets can run either in the same or opposite directions, which are stabilized by interchain hydrogen bonds.

The statement regarding hydrogen bonding in secondary structures which is true is: C. α-helices only use intrachain hydrogen bonds and β-sheets can use either intrachain or interchain hydrogen bonds.

Hydrogen bond can be defined as a weak chemical bond existing between a partially positively charged hydrogen atom and an electronegative chemical atom.

Protein is a macromolecule which is formed as a result of the union of many amino acids.

A hydrogen bond is an essential intermolecular force of attraction that is required for the formation of the secondary structures of proteins.

Generally, there are two (2) main types of secondary structure in proteins and these include:

In conclusion, α-helices can only use intrachain hydrogen bonds while β-sheets can use either intrachain or interchain hydrogen bonds.

Read more: https://brainly.com/question/14681125

Answer:

Explanation:

The amount of barium chloride used is 8.1 μmol and it was dissolved in a 50 mL flask. To find the concentration, we need to divide the amount of solute by the volume of solution:

Concentration = amount of solute / volume of solution

The volume of solution in liters is:

50 mL = 50 × 10^(-3) L = 0.050 L

So the concentration of the barium chloride solution in μmol/L is:

Concentration = 8.1 μmol / 0.050 L

Concentration = 162 μmol/L

Therefore, the concentration of the chemist's barium chloride solution is 162 μmol/L.

The patient received 37,037.04 mL of a 0.90% (m/v) NaCl solution.

What is a saline solution?

A saline solution is sodium chloride, salt, and water mixture. It is frequently utilised in medicine, especially for intravenous (IV) drips and injections that replenish the body's electrolytes and fluids.

We must apply the following formula to this issue in order to find a solution:

amount of solute = concentration x volume

where volume is in milliliters and concentration is expressed as a percentage (m/v).

Since concentration is specified as a percentage by mass, we must first change 3.0 g to milligrams (mg):

3.0 g = 3000 mg

In order to solve for volume, we may then plug in the given values:

3000 mg = 0.90% x volume

volume = 3000 mg / 0.009

volume = 333,333.33 mL

But this volume is for a saline solution that is 100% saline. We must modify the volume in accordance with the concentration, which is 0.90% (m/v):

0.90% x volume = 333,333.33 mL

volume = 333,333.33 mL / 0.009

volume = 37,037.04 mL

Therefore, the patient received 37,037.04 mL of a 0.90% (m/v) NaCl solution.

Learn more bout Saline Solution from the given link.

https://brainly.com/question/30232732

#SPJ1

0.05 * 100000

= 5000ml

= 5L

The total number of moles of ammonia produced when 10 moles of hydrogen reacts with a mole of nitrogen would be = 6.7 moles of ammonia.

From the balanced chemical equation given above, 1 mole of nitrogen reacts with 3 moles of hydrogen to produce 2 moles of ammonia.

This means that;

3 moles of Hydrogen = 2 moles of ammonia

10 moles of hydrogen = X moles of ammonia

Make X the subject of formula;

X = 10×2/3

= 20/3

= 6.7 moles of ammonia.

Therefore when 10 mole of hydrogen reacts with nitrogen, 6.7 mole of ammonia will be produced.

Learn more about chemical equations here:

https://brainly.com/question/26694427

#SPJ1

Answer:B and C

Explanation:did the assignment

The balanced chemical reaction equation demonstrates the reaction that took place.

A reaction occurs when new products are formed. Let us analyse all the reactions mentioned below and see whether they are feasible to occur or not. Feasibility of all the reactions are a very important element to check whether a reaction is possible or not.

FeCl3(aq) + Cs3(PO4) (aq) ------> 3CsCl(aq) + FePO4(aq)

2NaOH(aq) + Cd(NO3)2(aq) -------> 2NaNO3(aq) + Cd(OH)2(s)

MgBr2(aq) + 2CH3COOK(aq)  -----> 2KBr(aq) + Mg(CH3COO)2(s)

Ag2SO4(aq) + BaCl2(aq) ---------> BaSO4(s) + 2AgCl

Na2SO4(aq) + Sr(NO3)2(aq) ------> 2NaNO3(aq) + SrSO4(s)

Hence, seeing all the balanced chemical reaction equation demonstrates the reaction has taken place.

Learn more about balanced chemical equations:

brainly.com/question/4146311

#SPJ4

Answer 1:

During the summer months in the northern hemisphere (where the United States is located), Earth is in position C, which is when the northern hemisphere is tilted towards the sun.

Answer 2:

The highest tide occurs during the full moon phase, which is represented by position C in the diagram.

Answer 3:

A star that has a luminosity of 10^-2 is likely a red dwarf.

Answer 4:

Telescopes that observe short-wavelength radiation, such as X-rays and gamma rays, do not need to be placed in orbit around Earth because these wavelengths are absorbed by the atmosphere. Therefore, telescopes that observe these wavelengths are typically placed in space, outside of Earth's atmosphere.

Answer 5:

The student is likely demonstrating the relationship between the Earth and the Sun's gravitational pull. The ball represents the Sun, and the string represents the gravitational force pulling the Earth towards the Sun. The demonstration shows how the Earth orbits the Sun due to this gravitational force.

Gravitational force is described as a force that exists between any two objects in the universe that have mass.

It is the force that causes objects with mass to be attracted to each other. The magnitude of the gravitational force between two objects depends on their masses and the distance between them.

Along with the electromagnetic force, the strong nuclear force, and the weak nuclear force, gravity is one of the four fundamental forces of the universe.

Sir Isaac Newton initially introduced it in his law of universal gravitation, and Albert Einstein later elaborated on it in his theory of general relativity.

Learn more about Gravitational force at: https://brainly.com/question/27943482

#SPJ1

The mass of the rectangular piece of copper is 18,869 g (approx).In conclusion, the mass of a rectangular piece of copper with dimensions 24.4cm x 11.4 cm x 7.9 cm and a density of 8.92 g/cm³ is 18,869 g (approx.).

The given dimensions of the rectangular piece of copper are:Length = 24.4 cmWidth = 11.4 cmHeight = 7.9 cmThe formula to calculate the mass of an object is given by;

Mass = Density x Volume

Here, the density of copper is given as 8.92 g/cm³.

Therefore, the first step is to calculate the volume of the rectangular piece of copper.The formula to calculate the volume of a rectangular object is given by:

Volume = Length x Width x Height

So,Volume = 24.4 cm x 11.4 cm x 7.9 cm= 2115.432 cm³Now we will use the mass formula:

Mass = Density x Volume= 8.92 g/cm³ x 2115.432 cm³= 18,869.27824 g= 18,869 g (approx.)

For more such questions on copper

https://brainly.com/question/29176517

#SPJ8

The two main postulates that was given by Antoine Lavoisier are, oxygen play an important role in combustion and the other is mass of the reactant and product is conserved. Therefore the mass of HF is 28grams.

According to Law of conservation of mass, mass can neither be created nor be destroyed. Mass can only be transformed from one form to another. The law of conservation of mass was given by Antoine Lavoisier. Every reaction in nature follow the law given by Antoine Lavoisier that is mass is always conserved.

H\(_2\) + F\(_2\) → 2HF

Mass of  H\(_2\)=8Grams

mass of F\(_2\)= 20grams

According to law of conservation f mass

mass of H\(_2\) + mass of F\(_2\)   = mass of HF

Substituting all the given values, we get

8grams + 20grams =mass of HF

mass of HF=28grams

Therefore the mass of HF is 28grams.

To know more about law of conservation of mass, here:

https://brainly.com/question/28711001

#SPJ1

Answer:

Explanation:

Given that:

The argon atoms are excited into an excited state before emitting the 488.0 nm laser.

the energy of the first ionization energy of argon is 1520 kJ mol-1.

SInce 1 eV = 96.49 kJ/mol

Therefore, the energy of the first ionization energy of argon in eV is = ( 1520/ 96.49) eV

=  15.75 eV

To find where  the energy level of the excited state lies below the vacuum energy level, let's first determine, the energy liberated by using planck expression.

\(E = \dfrac{hc}{\lambda}\)

\(E = \dfrac{6.6 \times 10^{-34} \times 3 \times 10^8}{488 \times 10^{-9}}\)

\(E = \dfrac{1.98 \times 10^{-25}}{488 \times 10^{-9}}\)

\(E = \dfrac{1.98 \times 10^{-25}}{488 \times 10^{-9}}\)

\(E =4.057 \times 10^{-19} \ J\)

Converting Joules (J) to eV ; we get,

\(E =\dfrac{4.057 \times 10^{-19}}{1.6 \times 10^{-19}}\)

E = 2.53 eV

The energy levels of the first exited state = -13.223 eV

From given options, A, B, C, and D are all valid responses because they are all circumstances that can impact an enzyme's activity.

For more information on rate of reaction kindly visit to

https://brainly.com/question/30546888

#SPJ1

Answer:

0.06moles/litres

Explanation:

molarity = no of moles / volume in litres = 3.00*10^-2/(450/1000)=0.06 moles/litres

Answer:

0.07mol/dm^3

Explanation:

Please mark as brainliest

Answer:

3.16 x 10^22 magnesium ions

Explanation:

The molecular weight of MgCl2 is 95.21 g/mol (24.31 g/mol for magnesium + 2(35.45 g/mol) for chlorine), so 10 g of MgCl2 is equal to:10 g / 95.21 g/mol = 0.105 mol MgCl2Since MgCl2 dissociates into one Mg2+ ion and two Cl- ions in solution, the number of magnesium ions in the solution is equal to half the number of moles of MgCl2:0.105 mol MgCl2 * 0.5 = 0.0525 mol Mg2+To convert this to the number of magnesium ions, we need to multiply by Avogadro's number:0.0525 mol Mg2+ * 6.022 x 10^23 ions/mol = 3.16 x 10^22 magnesium ions

Answer:

After 15 minutes,the volume of the balloon stops expanding

Answer:

A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products. The properties of the products are different from those of the reactants.

I hope this helps.

Given the nuclear reaction above, the following applies;

Nuclear reaction is a process such as the fission of an atomic nucleus, or the fusion of one or more atomic nuclei and/or subatomic particles in which the number of protons and/or neutrons in a nucleus changes.

The reaction products may contain a different element or a different isotope of the same element.

Alpha decay is a radioactive decay by emitting an alpha particle, which is a positively charged nucleus of a helium-4 atom (consisting of two protons and two neutrons).

Based on the above explanation, the above-mentioned applies when radium atom undergoes alpha decay.

Learn more about alpha decay at: https://brainly.com/question/14081292

#SPJ1

Answer:

Explanation:  check my paage