Complete the graphic organizer.
Basic Parts of an Atom

Answer:

D.) This atom has an atomic number of 50

Explanation:

A is wrong because we determine the type of atom by their number of protons, not the number of neutrons. This makes the atom Tin (Sn).

B is wrong because both protons and neutrons contribute to the weight of an atom, not just neutrons

C is wrong because the correct name for this isotope would be tin-119, which is calculated by adding the protons and neutrons

D is correct because isotopes of the same element always share the same atomic number

Answer:

The children have spent 5 of there years playing and having the time of there lives and the other 5 years are spent losing and gaining brain sells!

hope this helps:)

so sorry if this is wrong!

Answer:

0.55g/L

Explanation:

Given parameters;

Mass of salt  = 55g

Volume of water  = 100L

Unknown:

g/L concentration  = ?

Solution:

To solve this problem, we must understand that concentration is the amount of solute per solution

 g/L concentration  = [tex]\frac{55}{100}[/tex]   = 0.55g/L

Answer:

imma go with the answer B

The product in the reaction  [tex]\rm Zn + 2HCl \rightarrow[/tex] is [tex]\rm ZnCl_2 + H_2[/tex]. The correct answer is option D.

A reaction is a process that involves the transformation of one or more substances into one or more different substances.

The reaction between zinc (Zn) and hydrochloric acid (HCl) is a classic example of a single displacement reaction. In this reaction, zinc reacts with hydrochloric acid to produce zinc chloride ([tex]\rm ZnCl_2[/tex]) and hydrogen gas ([tex]\rm H_2[/tex]).

The balanced chemical equation for this reaction is:

[tex]\rm Zn(s) + 2HCl(aq) \rightarrow ZnCl_2(aq) + H_2(g)[/tex]

Therefore, the product of the reaction between zinc and hydrochloric acid is zinc chloride ([tex]\rm ZnCl_2[/tex]) and hydrogen gas ([tex]\rm H_2[/tex]). Option D is the correct answer.

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Answer: addition and elimination

Explanation:

In addition you add and in elimination you remove (or subtract)

The reactions that are the reverse of one another are addition and elimination. Details about types of reactions are as follows.

A reaction is the transformation in which one or more substances is converted into another by combination or decomposition.

Reactions can be of different types as follows:

However, addition and elimination reactions are reverse of one another because addition involves adding substances while elimination involves removing substances.

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Answer:

carbon dioxide I beleive.

Explanation:

dry ice is frozen liquid carbon dioxide and when it melts it gives off carbon dioxide gas.

Answer:

C. 414 kJ

Explanation:

Given parameters:

Mass of copper  = 2kg

Unknown:

Amount of energy required to melt the copper  = ?

Solution:

To solve this problem, we use:

       Q  = m L

m is the mass

L is the latent heat of fusion of copper  = 207kJ/kg

So;

        Q = 2 x 207  = 414kJ

Answer:

Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.

Explanation:

Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.

Answer:

Common strong acids include hydrochloric acid, sulfuric acid, phosphoric acid, and nitric acid. Common weak acids include acetic acid, boric acid, hydrofluoric acid, oxalic acid, citric acid, and carbonic acid.

Answer:

The answer is D

I searched it up to verify.

Answer: I think the possible answer is B or D

Explanation: There are few of the energies like: Gravitational, electrical, Chemical.....

Answer:

5.95 moles

Explanation:

No of moles = given mass / molar mass

No of moles = 137/23

= 5.95 moles

Answer:

An ideal gas is a theoretical concept and a real gas behaves in an ideal manner under conditions which includes a high temperature and a low pressure such that the gas has high kinetic energy, and the intermolecular forces between the molecules are weak

The Ideal Gas Law is P·V = n·R·T

Where;

P = The pressure of the gas

V = The volume of the gas

n = The number of moles of the gas

R = The Universal Gas Constant

T = The temperature of the gas

For a gas cooled to 10 Kelvin and placed under high pressure, the interaction between individual gas molecules increases, and the kinetic energy of the gases is much lower and more comparable to the inter molecular forces between the gas molecules, which in turn produces observable changes from the initial ideal behavior of the gas such that the gas behavior deviates from the Ideal Gas Laws appreciably and are better modelled by the Van der Waals Equations which takes into account, the volume the gas particles occupy and the intermolecular forces between the molecules

The Van der Waals equation is presented as follows;

[tex]P = \dfrac{R \cdot T}{V - b} - \dfrac{a}{V^2}[/tex]

Where;

V = The molar volume

a = The gas constant a represents the attractive forces between the gas particles

b = Represent the volume occupied by the particles of the gas

Explanation:

Answer: A, B, & C

Explanation:

A. The ideal gas model assumes that gas particles experience no intermolecular attractions and these forces cause the gas to deviate from ideal behavior.

B. At very low temperatures, gas particles move slowly.

C. At very high pressures, gas particles are very close together.

Got it right on edge :)

Answer:

4 mol

Explanation:

Given data:

Number of atoms of He = 2.4 × 10²⁴ atoms

Number of moles of He = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

2.4 × 10²⁴ atoms × 1mol / 6.022 × 10²³ atoms

0.398× 10¹ mol

3.98 mol ≅ 4 mol

Answer:

0.4 km/h  velocity is also the direction their going, in this case the person, that I'll name billy bob joe, is going in so yeh

Explanation:

give me brainliest?

Answer:

rain I think

Explanation:

Precipitation mostly relies on the main source water, that is how snow hail, and other cool weather form are created. So rain I may be wrong.

,

Rain is the most common type of precipitation. Therefore, the correct option is option B among all the given options.

Any liquid and frozen water which condenses in the atmosphere then falls to the ground is referred to as precipitation. Rain, sleet, as well as snow are only a few of its various manifestations. Precipitation is one of three main processes that make up the global water cycle, together with evaporation and condensation.

Water vapor in the clouds condenses into increasing-sized droplets of water, forming precipitation. The drips hit the ground when they are sufficiently hefty. The water droplets can freeze to produce ice if a cloud is colder, as it would be at higher elevations. Rain is the most common type of precipitation.

Therefore, the correct option is option B.

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Answer:

23%

Explanation:

Answer:

Between carbon and silicon, silicon element has the strongest attraction between its nucleus and its valence electrons.

because silicon's nucleus is bigger than carbon.silicon loses electrons easily than carbon.

Answer:

1.5 moles of sodium chloride are present.

Explanation:

Given data:

Number of moles of sodium chloride = ?

Number of atoms of sodium chloride = 9.07×10²³

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

9.07×10²³ atoms  × 1 mol / 6.022 × 10²³ atoms

1.5 moles of sodium chloride are present.

Answer:

I think it would be Yellow

Explanation:

6.The main pieces of evidence that scientists use to classify organisms are essentially form and evolutionary relationships.

9. chimpanzee

10. The answer is no, lemurs are not bipedal, i.e, they don't use two legs for walking like human do and they don't have language like ours.

Explanation:

alto cumulus is the pic

Answer:

67.89

Explanation:it’s right

The percent composition of carbon in  compound of acrylonitrile is 22.646%.

Percent composition  is defined as a convenient way to record concentration of solution.It is a expression which relates mass of element  to mass of compound  as,mass of element/mass of compound×100.

Percent composition helps in elemental analysis of compound which is useful in analysis of ores also.  It helps in making solutions while performing the titrations.  It helps in prediction of chemical formula which can be predicted by mass and molar mass of an element.

The compound acrylonitrile  has a molar mass 53.06 g/mole and that of carbon is 12 g/mole thus, percent composition of carbon in  compound of acrylonitrile is 12/53.06×100=22.646%.

Thus, the percent composition of carbon in  compound of acrylonitrile is 22.646%.

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Answer:

Elements

Explanation:

An element is any substance that cannot be broken down into simpler form by ordinary chemical means.

Elements are distinct substances that cannot be split up into simpler substances. .

Such substances consist of only one kind of atom. There are over hundred elements known till date. Elements are made up of unique atoms. In a chemical reaction, elements combines and rearranges.

Answer:

Diaphragm controls the amount of light reaching the specimen. It is located above the condenser and below the stage. Most high quality microscopes include an Abbe condenser with an iris diaphragm. Combined, they control both the focus and quantity of light applied to the specimen.

Answer:

5425440 μm

Explanation:

From the question given above,

Length (in ft) = 17.8 ft

Length (in μm) =?

Next, we shall convert 17.8 ft to in. This can be obtained as follow:

1 ft = 12 in

Therefore,

17.8 ft = 17.8 ft × 12 in / 1 ft

17.8 ft = 213.6 in

Next, we shall convert 213.6 in to cm. This can be obtained as follow:

1 in = 2.54 cm

Therefore,

213.6 in = 213.6 in × 2.54 / 1 in

213.6 in = 542.544 cm

Finally, we shall convert 542.544 cm to μm. This can be obtained as follow:

1 cm = 10⁴ μm

Therefore,

542.544 cm = 542.544 cm × 10⁴ μm / 1 cm

542.544 cm = 5425440 μm

Therefore, 17.8 ft is equivalent is equivalent to 5425440 μm

Answer:

Gravitational potential energy: [tex]GPE_{B}>GPE_{A}>GPE_{C}[/tex]

Kinetic energy: [tex]KE_{B}<KE_{A}<KE_{C}[/tex]

Total mechanical energy: [tex]ME_{A}=ME_{B}=ME_{C}[/tex]

Explanation:

The gravitational potential energy is directly proportional to height ([tex]GPE_{B}>GPE_{A}>GPE_{C}[/tex]). Since there are no non-conservative forces, the total mechanical energy is conserved ([tex]ME_{A}=ME_{B}=ME_{C}[/tex]) and the total mechanical energy is the sum of gravitational potential and kinetic energies. Then:

[tex]GPE_{A} + KE_{A} = GPE_{B} + KE_{B} = GPE_{C} + KE_{C}[/tex] (1)

If we know that [tex]GPE_{B}>GPE_{A}>GPE_{C}[/tex], then we conclude the following inequation for the kinetic energy:

[tex]KE_{B}<KE_{A}<KE_{C}[/tex] (2)