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Answer: Model

Explanation: Did the quiz

Answer:

Water, wheel and paddles or bucket are the parts and mechanical energy is produced.

Explanation:

The parts of water wheel system are water, wheel and paddles or bucket. The main purpose of water wheel system is to generate useful energy by using the flowing or falling of water on the wheel. We use this water wheel system for the conversion of kinetic energy into mechanical energy such as water mill or hydroelectric plant in which the blades movement is responsible for the generation of electricity.

Answer:

[tex]1.29 * 10^{24}[/tex] particles of gold

Explanation:

To convert the number of moles of any substance, in this case gold, you need Avogadro's number.

Avogadro's number is always [tex]6.022[/tex] × [tex]10^{23}[/tex]

[tex]2.15[/tex] moles Au × [tex]\frac{6.022*10^{23} particles}{1 mole Au}[/tex] = [tex]1.29 * 10^{24}[/tex] particles of gold

The number of representative particles in 2.15 moles of gold is 1.29 × 10 ²⁴.

The term mole is defined as the amount of  substance containing 6.023 × 10²³ particles. 1 mol = 6.023 × 10²³ particles. This number is also called Avogadro's number. The symbol of mole is denoted by M.

A mole is a very important unit of measurement that chemists use. By using moles, chemists have to measure for very small things like atoms, molecules, or other particles.

The quantity amount of substance is a measure of how many elementary entities of a given substance are present in it.

To convert the number of moles of any substance, we required Avogadro's number.

Avogadro's number is always equal to 6.023 × 10 ²³

2.15 moles Au × 6.023 × 10 ²³ particles / 1 mole of Au

= 1.29 × 10 ²⁴ particles of gold

Thus, the number of representative particles in 2.15 moles of gold is 1.29 × 10 ²⁴.

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Answer:

The average atomic mass of boron is found to be  

10.80

Explanation:

also u answered it urself

Relative and average atomic mass both describe properties of an element related to its different isotopes. Out of these two Relative atomic mas is more accurate. Therefore, the average atomic mass of boron is 10.80amu. The correct option is option B.

Mass defines the quantity of a substance. It is measured in gram or kilogram. Average mass is the mass of atoms of an element that are isotopes. It can be calculated by multiplying mass of a isotope to natural abundance of that isotope.

Average atomic mass = (mass of first isotope× percent abundance of first isotope)+(mass of second isotope× percent abundance of second isotope)

Substituting the given values

Average atomic mass=( 10 amu ×  19.9%)+(11 amu × 80.1%)

Average atomic mass=10.80amu

Therefore, the average atomic mass of boron is 10.80amu. The correct option is option B.

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Answer:Molarity can be used to calculate the volume of solvent or the amount of solute. The relationship between two solutions with the same amount of moles of solute can be represented by the formula c1V1 = c2V2, where c is concentration and V is volume.

Explanation: c1V1 = c2V2

The equation that can be used to solve the volume of a solution using the molarity equation is:

Molarity (M) = moles of solute (mol) / volume of solution (L)

This equation can be rearranged to solve for the volume of solution:

Volume of solution (L) = moles of solute (mol) / Molarity (M)

By knowing the molarity of the solution and the number of moles of solute, you can substitute these values into the equation to calculate the volume of the solution.

It's important to note that this equation assumes the molarity is given in units of moles per liter (mol/L). If the molarity is given in a different unit, it may need to be converted before using the equation.

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Your question is incomplete, but most probably your full question was.



Which of the following equations can be used to solve volume of a solution using molarity equation?

Volume moles ÷ molarity

Volume-moles + molarity

Volume moles + molarity

Volume = moles x molarity

Answer:A copper-gold alloy has a crystalline structure

Explanation:

Answer:

Table salt is made up of two elements

Sodium and Chlorine

Explanation:

[tex]Na + Cl_2 - > NaCl[/tex]

How Rock salt is gotten

: As the brine boils in the first effect, water evaporates producing further steam and causing salt crystals to grow. As the brine boils and the water starts to evaporate, a thick salt slurry of brine and salt crystals is formed.

Explanation:

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Hope it helps

Answer:

A. Freezing point: Increase.

B. Melting point: Decrease

C. Boiling point:  Decrease​

Explanation:

Answer:

A increase

B decrease

C decrease

Explanation:

Answer:

Conversion of kinetic energy to potential energy (chemo mechanical energy)

In the state of rest, the rubber is a tangled mass of long chained cross-linked polymer that due to their disorderliness are in a state of increased entropy. By pulling on the polymer, the applied kinetic energy stretches the polymer into straight chains, giving them order and reducing their entropy. The stretched rubber then has energy stored in the form of chemo mechanical energy which is a form of potential energy

Conversion of the stored potential energy in the stretched to kinetic energy

By remaining in a stretched condition, the rubber is in a state of high potential energy, when the force holding the rubber in place is removed, due to the laws of thermodynamics, the polymers in the rubber curls back to their state of "random" tangled mass releasing the stored potential energy in the process and doing work such as moving items placed in the rubber's path of motion such as an object that has weight, w then takes up the kinetic energy 1/2×m×v² which can can result in the flight of the object.

Explanation:

Answer:

Elastic potential energy------> kinetic energy --------> elastic potential energy

Explanation:

Elastic potential energy is the energy stored in a spiral spring. When a rubber band is stretched, this elastic potential energy is capable of doing work. This energy is just stored inside the rubber band and released when work is done by the rubber band.

Once the rubber band is released and it is in motion, the energy of the rubber is kinetic energy.

The system is similar to a simple pendulum.

Answer:

The flame test is important in these fields as it helps scientists in determining the metal ions present in elements under study from their emission spectrum.

Explanation:

The Flame test is an important test in Chemistry that is based on the fact that metal ions emit certain characteristic spectrum. The element under investigation is made to pass through a hot, non-luminous flame. The resulting spectrum emitted determines the present metal ions. It is important in;

1. Forensics: Forensic is the application of scientific methods in detecting crime. If for example, a food substance is poisoned, the flame test can help in determining the metal ions present in the food and to know if they are indeed poisonous.

2. Astronomy: Scientists observe the stars and the spectra emitted by them to know which elements have the same colors. This also helps them to know how many light years away the stars are.

3. Environmental and Industry issues: Some industries may be fund guilty of releasing substances such as in oil exploration or bad water to the environment. Flame tests would help to determine which metal ions are present in these substances and their potential for and degree of harm.

Answer:

The correct option is

B. PEA = KEC + PEC

Explanation:

The potential energy is the energy possessed due to position

From the image the point with the highest position and therefore the most potential energy and the lowest or zero kinetic energy is point A

Given that we have;

Total mechanical energy = The potential energy +  The kinetic energy

Where there is constant total mechanical energy in the system, then, at the point A where the kinetic energy is zero, the potential energy is equal to the total mechanical of the system, we have;

Total mechanical energy = The potential energy at A = PEA

Total mechanical energy = PEA

At point C where we have the total mechanical energy presented as follows;

Total mechanical energy = Kinetic energy at C + Potential energy at C

Total mechanical energy = KEC + PEC

Therefore;

PEA = KEC + PEC.

Answer:

It is made up of 2 elements. The elements are calcium and chlorine.

Explanation:

I just know

Answer:

s

Explanation:

s

Answer:

Both reflect the kinetic energy of moving particles of matter. However, temperature is the average kinetic energy of particles of matter, whereas thermal energy is the total kinetic energy of particles of matter. ... Another factor also affects thermal energy. The other factor is mass

Explanation:

Answer:

350 J

Explanation:

The law of conservation of energy states that energy can neither be created nor destroyed but can only be converted from one form to another. This means that in a system, energy is not lost.

In this question, an unlit match contains approximately 1,000 J of chemical energy. When lit, thermal and light energy are emitted i.e. it gets converted to light and heat energy. If the thermal energy emitted was measured to be 400J, and the remaining match still contains 250J of chemical energy, then:

The amount of light energy emitted will be:

Total chemical energy (1000J) - {Remaining chemical energy (250J) + emitted thermal energy (400J)}

= 1000 - (400 + 250)

= 1000 - 650

= 350

Hence, the amount of light energy emitted is 350J

Note that, the amount of energy converted (thermal and light) and remaining chemical energy still equates the total chemical energy in the match.

Answer:

The answer is "brittle,  dense, and electrically insulating"

Explanation:

An iodine sampling frame is cheaper to transport as a powder because it is fragile, simple for individual bits to break.

The helium gas becomes less dense than for the air components for developers inbreathe, thus a helium gas was filled balloon floats throughout the air.

The plastic is the chemical compound of the non-metallic compound, in which it makes a popular layering for electrical cables to prevent unnecessary fleeing the flow.

Answer:

The answer is "brittle,  dense, and electrically insulating"

Explanation:

Answer:

Does the nature of intermolecular forces present in different substance affect their boiling points?

Explanation:

In every scientific research there must be a dependent and an independent variable. These variables are easily deduced from the scientific question that is being investigated.

If a student is comparing the boiling points of different substances having different intermolecular forces, then his or her aim is to establish a relationship between the nature of intermolecular forces present (independent variable) and the observed boiling point of the substance (dependent variable).

This is aptly shown by the research question ' Does the nature of intermolecular forces present in different substance affect their boiling points?'

Options:

Is boiling point affected by the strength of particle attraction?

Is boiling point affected by the mass of the sample?

Is boiling point correlated to melting point?

Is boiling point the temperature at which a substance changes its state?

Explanation:

ADD THE OPTIONS PEOPLE OR YOU GET NON RELATED AWNSERS LIKE THE ONE ABOVE

Answer:

D

Explanation:

Answer:

D

Explanation:

:)

Answer:

D

Explanation:

A plant powered by natural gas releases carbon dioxide

In an ecosystem, a plant powered by natural gas releases carbon dioxide which is toxic for the environment.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the ecosystem through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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I found this. hope it helps!

Answer:

CARBON-HYDROGEN BOND

Explanation:

The non-covalent interactions in the options are the hydrogen bond, the Van der Waal's bond, the dipole-dipole interaction. The odd one out of the options is the carbon - hydrogen bond.

The carbon-hydrogen bond is a covalent bond involving carbon and hydrogen atoms in which carbon shares its outer valence electrons with up to four hydrogen atoms either forming a complete shell with single bonds or complete shells with double or triple bonds. The type of bonding is found in hydrocarbons and other organic compounds. For example the alkanes, alkenes, alkynes and aromatic hydrocarbons.

The non- covalent bonds are the bonds that bind macro-molecules and do not involve the sharing of pairs of electrons. They are much more weaker than covalent bonds and are very important in the formation of proteins and nucleic acids. This type of bonding includes the electrostatic interactions, hydrogen bonds, hydrophobic bonds, Van der Waal's interactions. The different types of the non-covalent bonds differ in geometry, strength and specificity.

So therefore, carbon-hydrogen bond is the odd one of the non-covalent interactions listed in the options.

Answer:

I wont get cavities it the dependent variable

Explanation:

Answer:

Physical

Explanation:

Water is the chemical form of 2 hydrogen and 1 oxygen (H2O)

It is still H2O, as nothing made it chance that formula.

Answer:

Just say you expect all the help you need.

Explanation:

Say that you expect to get as much help as you can and that you expect to he welcomed and loved

Answer:

Live Together

Explanation:

Answer:

Graduated cylinders are designed for accurate measurements of liquids with a much smaller error than beakers. They are thinner than a beaker, have many more graduation marks, and are designed to be within 0.5-1% error. ... Therefore, this more precise relative of the beaker is just as critical to almost every laboratory.

Explanation:

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