if you are correct i will be sure to give your brainliest

FeCl2 + Na2CO3 = FeCO3 + 2NaCl

Answer:

Light fur mice can be easily spotted by predators among the dark rocks

Light-fur mice survive less often on dark rocks, compared to dark- figure mice because light - mice are easily seen by predators, while dark - figure are not easily seen by predators.

Any species that preys on other animals and survives by killing and devouring them. Predators such as wolves and bears. Rabbit population is regulated by large carnivores.

Predators are living things that go for and kill prey. The term "prey" refers to the living things that predators eat. Both carnivores and omnivores may be predators. Predators including lions, tigers, sharks, and snakes.

Thus, Light-fur mice survive less often on dark rocks, compared to dark- figure mice because light - mice are easily seen by predators, while dark - figure are not easily seen by predators.

To more learn about predator follow the link below ;

https://brainly.com/question/28871161

#SPJ2

What causes the changes in the ice ages is when the earth's orbits tilts.

The ice ages are caused by changes in Earth's orbit and tilt, which affect the amount of solar radiation received by the planet. These changes alter the climate and trigger the growth and retreat of ice sheets.

We know that the changes in the climates is responsible for most of the changes that we can see in the universe as we have come to experience it today.

Thus the earth's orbits is what does control the changes in the ice ages.

Learn more about the ice ages:https://brainly.com/question/29417575

#SPJ1

The actual yield is also the amount of product you obtained for that % yield

for that we have to calcualte first the theoretical yeild or in other words how mane grams of NaCl would be obtained if all 11.50 grams of Na are conberted into NaCl For that we need the molar mass of Na and NaCl

Mm of Na= 23 g/mol ; Mm of NaCl = 58.5 g/mol.

Which tht information and according to the stechiometry of the reaction we know that 23g of Na produce 58.5 g of NaCl. If we use this information as conversion factor and multipli it by the initial amount of Na we can calculate the theoretical yield:

tho obtain the actual yield we have to multiply the theoretical yield times the percentage yield:

Answer:

The hotness or pungency of chilli is due to presence of a group of compounds called capsaicinoids. Among capsaicinoids, capsaicin and dihydrocapsaicin are present in major quantities, while homocapsaicin, nordihydrocapsaicin and homo-dihydrocapsaicin are present in very small quantities.

The pungency of chillies is due to the presence of certain compounds called capsaicinoids.

The general gas equation, commonly referred to as the ideal gas law, represents the state of a fictitious ideal gas through an equation. Despite its numerous drawbacks, the ideal gas law provides a decent approximation of the behaviour of many gases in a variety of situations.

The combination of Boyle's law, Charles's law and Avogadro's law results in the formation Ideal gas law and the ideal gas equation is given as:

PV = nRT

T = PV / nR

15 × 50 / 11.9 × 0.0821 = 767.7 K

To know more about ideal gas law, visit;

https://brainly.com/question/13207402

#SPJ1

The correct answer is 76.9 g of \(Cl_{2}\) is required to react with 19.5 g of \(Al\). Therefore, the correct option is: 76.9 g.

What is Atomic Mass?

Atomic mass, also known as atomic weight or relative atomic mass, is a measure of the mass of an atom of a chemical element. It is expressed in atomic mass units (amu) or unified atomic mass units (u). Atomic mass is a weighted average mass of the naturally occurring isotopes of an element, taking into account their relative abundances.

The balanced chemical equation for the reaction is:

\(2Al\) (s) + 3\(Cl_{2}\) (g) → \(Al_{2}\)\(Cl_{6}\)

From the equation, we can see that the molar ratio between \(Al\)and Cl2 is 2:3. This means that 2 moles of \(Al\) react with 3 moles of \(Cl_{2}\)

To find out how many grams of \(Cl_{2}\) are required to react with 19.5 g of \(Al\) we need to convert the given mass of \(Al\) to moles using its molar mass, and then use the mole ratio from the balanced equation to calculate the amount of \(Cl_{2}\).

The molar mass of \(Al\) is 27 g/mol, and the molar mass of \(Cl_{2}\) is 2 * 35.45 g/mol = 70.9 g/mol.

Moles of \(Al\)= Mass of \(Al\)/ Molar mass of\(Al\)

Moles of \(Al\) = 19.5 g / 27 g/mol ≈ 0.722 mol

According to the mole ratio from the balanced equation, 2 moles of \(Al\)react with 3 moles of \(Cl_{2} .\)

Moles of \(Cl_{2}\)= Moles of \(Al\) * (3 moles of \(Cl_{2}\) / 2 moles of \(Al\))

Moles of \(Cl_{2}\) = 0.722 mol * (3/2) ≈ 1.083 mol

Now, we can convert moles of \(Cl_{2}\) to grams using its molar mass.

Mass of\(Cl_{2}\) = Moles of \(Cl_{2}\) * Molar mass of \(Cl_{2}\)

Mass of\(Cl_{2}\) = 1.083 mol * 70.9 g/mol ≈ 76.9 g

Learn more about Atomic Mass from the given link

https://brainly.com/question/3187640

#SPJ1

Approximately 166.67 mL of water needs to be evaporated from 250 mL of 1 M Ca(OH)2 to make it 3 M.

The relationship between the initial and final concentrations and volumes must be taken into account.

Given: Initial concentration \((C^1) = 1 M Initial volume (V^1) = 250 mL\)

\((C^2) = 3 M final concentration\)

We can use the equation:

\(C^1 * V^1 = C^2 * V^2\)

Where:

\(V^2\)is the final volume of the solution

Rearranging the equation to solve for V2:

\(V^2 = (C^1 * V^1) / C^2\)

Substituting the given values:

\(V^2 = (1 M * 250 mL) / 3 M\)

\(V^2 = 250 mL / 3\)

\(V^2\) ≈ \(83.33 mL\)

To find the amount of water that needs to be evaporated, we subtract the final volume from the initial volume:

Amount of water to be evaporated = \(V^1 - V^2\)

Amount of water to be evaporated = 250 mL - 83.33 mL

Amount of water to be evaporated ≈ 166.67 mL

Therefore, approximately 166.67 mL of water needs to be evaporated from 250 mL of 1 M Ca(OH)2 to make it 3 M.

Learn more about Initial concentration here: brainly.com/question/30720317

#SPJ1

Answer:

C. Speed

Explanation:

Density differences in different materials are able to change the speed of a wave.

Answer:

Speed

Explanation:

The speed or mass of something can totally change the direction of the wave

The application of force in the direction of the motion of an object. The second scenario involves applying force to a moving item that is traveling in the opposite direction.

A force is an influence that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. A force has both a direction and a magnitude.

Force is used to describe a body's tendency to modify or change its state as a result of an external cause. When force is applied, the body can also alter its size, shape, and direction.

A push or pull that an object experiences as a result of interacting with another item is known as a force. Every time two items interact, a force is exerted on each of the objects. The force is no longer felt by the two objects when the interaction ends.

Thus, Force applied to an item in motion that originates in any direction constitutes the third situation where force is created.

To learn more about force, follow the link;

https://brainly.com/question/13191643

#SPJ1

The atom is mostly empty space, allowing the positive alpha particle to travel through unaffected explains why an alpha particle might go directly through the atom (Option B).

An atom is the smallest unit of matter that retains all of the chemical properties of an element. Atoms are composed of protons, neutrons and electrons. They are the building blocks of all other matter.

An alpha particle might go directly through the atom because an alpha particle is relatively large and carries a significant amount of energy, so it can pass through the relatively small and mostly empty space within an atom without colliding with its nucleus or electrons.

The positive charge of the alpha particle could potentially interact with the positive charge of the nucleus, but this effect is usually negligible due to the small size of the nucleus compared to the distance between the alpha particle and the nucleus. Therefore, the most likely explanation for an alpha particle passing directly through an atom is that the atom's structure is mostly empty space.

Learn about atom here https://brainly.com/question/26952570

#SPJ1

Answer:

What is a Lewis Dot Model?

A simplified representation of the valence shell electrons in a molecule.

What is its purpose?

To show how the electrons are arranged around individual atoms in a molecule.

What are real life examples?

The Lewis Structures helps us understand the bonding of atoms and the shapes of molecules and their chemical properties. And in real life the proteins we eat in food are the carbohydrates which is from chemical bonding, which we can learn through TLS.

Creator of Lewis Structure Facts-

Gilbert Lewis Newton and he is from Weymouth, Massachusetts

Explanation:

Hope this helps you.

Answer:

oh I can give you some points I have but I don't know how to can ya help?

Answer:

E =  0.14 ×10⁻¹⁷ J

Explanation:

Given data:

Wavelength of light = 142 nm (142 ×10⁻⁹ m)

Energy of light = ?

Solution:

Formula:

E = hc/λ

h = plancks constant = 6.63×10⁻³⁴ Js

c = speed of light = 3×10⁸ m/s

by putting values

E = 6.63×10⁻³⁴ Js × 3×10⁸ m/s / 142 ×10⁻⁹ m

E = 19.89×10⁻²⁶ J.m/ 142 ×10⁻⁹ m

E =  0.14 ×10⁻¹⁷ J

They wanted all nations to focus on domestic issues and not get involved with each other.

Churchill stated, "I conceived an admiration for him as a statesman, a man of affairs, and a war leader," following Roosevelt's death on April 12, 1945. He was the best American friend that Britain has ever found, continued Churchill. The "Special Relationship" was created by their close personal relationship.

Along with agreeing to include France in Germany's postwar governance, Roosevelt, Churchill, and Stalin also agreed that Germany should bear some, but not all, of the burden of making reparations after the war.

To know more about war :

https://brainly.com/question/3445478

#SPJ9

Answer:

Explanation:

MTBE (C5H12O)

Answer:

Expensive and low storing capacity.

Explanation:

The storing of renewable energy is a big challenge for us because this renewable energy can't be stored for a long due to expensive and low storing capacity. There are two challenges about the storing of renewable energy is that the battery are very expensive and can store very less amount of energy which makes unable to store the renewable energy. The scientists should make a storing device which is not too much expensive and has more storage capacity.

Answer:

Ovary

Explanation:

ovaries produce the most estrogen in females.

Answer:

It's too far away

Explanation:

According to classical mechanics, gravitational pull is inversely proportional to the distance squared; as the distance increases, the gravitational pull decreases at a faster and faster rate. Since Alpha Centauri A is a few lightyears (Tens of trillions of kilometers away), without even needing to calculate the force of gravity, it is very miniscule.

Catalyst has no effect on the amount of product formed at the end of the reaction. Option D is correct

A catalyst is. substance that speed up the rate of chemical reaction thereby causing the product to be formed within a short period of time. Some of the importance of catalyst include:

• They make reaction occur very fast

• Lower the activation energy of a reaction

• Create alternative pathway for reaction to proceed

Catalyst does not necessarily increase the amount of product formed but make it form within a short period.

Also they only provide alternative pathway but not having lower activation energy (They only lower the activation energy)

Based on the explanation, we can conclude that catalyst has no effect on the amount of product formed at the end of the reaction.

Answer:

Molarity of sucrose = 0.116 M (Approx.)

Explanation:

Given:

Volume of solution = 0.5 liter

Mass of sucrose in gram = 20 gram

Molar mass of sucrose 342.3 g/mol

Find:

Molarity of sucrose

Computation:

Mole of sucrose = Mass of sucrose in gram / Molar mass of sucrose

Mole of sucrose = 20 / 342.3

Mole of sucrose = 0.058 (Approx.)

Molarity of sucrose = Mole of sucrose / Volume of solution

Molarity of sucrose = 0.058 / 0.5

Molarity of sucrose = 0.116 M (Approx.)

We could start by discarding some options. For example, the particles of the gases are much more dispersed and separated than those of the liquids, we can discard the fourth one.

The forces of the liquids are not so strong. They are greater with respect to the gases, but it cannot be said that they present strong intermolecular forces.

Gases do not form crystals, that is, we do not see a gas behaving like a solid, so we can discard the third one as well.

We are left with the second option. Crystals can form crystals because liquids can behave like a solid but without having a definite shape, this makes them amorphous crystals. So the answer is the second option.

Answer: Liquids form amorphous crystals while gases do not.

The values for an electrically neutral atom of carbon-12 will be: Number of electrons = Number of protons = 6, Mass number = 12, and Atomic number = 6

Neutral atom: When an atom has an equal number of electrons as well as protons, it has an equal number of negative (the electrons) and positive electric charges (the protons). As a result, the atom's total electric charge will be zero, and it is said to be neutral. Therefore, all the elements in the modern periodic table are neutral atoms.

In order from smallest to largest, the values are:

Atomic number (6)

Number of electrons (6)

Number of protons (6)

Mass number (12)

To know more neutral atom about here

https://brainly.com/question/29757010

#SPJ4

The compound would have a molecular formula of C5H10O2.

The empirical formulas is the simplest formula of a compound.

We know that;

Mass  of the carbon = 14.03 * 12/44 = 3.82 g

Moles of C = 3.82 g/12 g/mol = 0.32 moles

Mass of water = 3.83 * 2/18 = 0.43 g

Moles of H =  0.43 g/1 g/mol =  0.43  moles

Mass of oxygen = 8.5 - (3.82 + 0.43)

= 4.25 g

Moles of oxygen = 4.25 g/16 g/mol = 0.27 moles

We can now divide through by the lowest ratio;

C - 0.32    H - 0.43    O - 0.27

C - 1   H - 2  O - 1

The empirical formula is CH2O

The molecular formula is;

[12 + 2+ 16]n = 160

n = 160/30

n = 5

The molecular formula is;

C5H10O2

Learn more about molecular formula :https://brainly.com/question/20748250

#SPJ1

Answer:

CaCO3 -> CaO + CO2

Explanation:

Woahhhh, did you balance it yourself just then?

Answer:

A. increase

Explanation:

the smaller the size of the ionic compounds, the more closer they get packed together. This means electrostatic attraction also increases, which means the ionic bonds gets stronger...therefore increases the melting point

Answer: Under what condition an object having density greater than water will float on water?

If an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float. Density is a characteristic property of a substance and doesn't depend on the amount of substance.

Answer:

D. The Ca[OH]2 solution may have been unsaturated

Explanation:

The solubility product constant Ksp of any given chemical compound is a term used to describe the equilibrium between a solid and the ions it contains solution. The value of the Ksp indicates the extent to which any compound can dissociate into ions in water. A higher the Ksp, implies more greater solubility of the compound in water.

If the Ksp is more than the value in literature, this false value must have arisen from the fact that the solution was unsaturated hence it appears to be more soluble than it should normally be when saturated.