(i will give brainliest)


The following image shows what happens when the particles in a certain state occupy a space. What is the state of the substance that is occupying the space and how do you know?





A. The substance is a gas because the particles are spreading out to fill the space of the container.


B. The substance is a liquid because the particles inside are taking the shape of the container.


C. The substance is a mixture of a gas and a liquid because the particles are filling the space of the container.


D. The substance is a solid because the particles inside the box have a definite shape.

Answer:

An open system can exchange both energy and matter with its surroundings. The stovetop example would be an open system, because heat and water vapor can be lost to the air.

Explanation:

When energy is added to a system during phase change, the particles move faster.

When a substance is heated, the internal energy within a system associated with the motion of particles and that can be added to a substance is called thermal energy.

During a phase change, when more energy is added to the system, the particles within the system will have greater motion and the temperature will increase.

The attractions that hold molecules together are electrostatic forces. The correct statement about the attractions that hold particles is that attractions between particles break when  attractions due to Electrostatic forces when particles move fast enough these forces can no longer keep particles together.

Rubber band  is not a perfect comprehension for Bonds in a substance when considering phases change because for a phase change from liquid to gas the bonds do not break completely the particles can still slide past each other.

The pair of samples that will have the same average kinetic energy of benzene molecules is a sample of liquid benzene at 80°C and a sample of gaseous benzene at 80°C.

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Answer:

one end is the north pole and the other is the south pole.

Explanation:

a north pole will attract a south pole; the magnets pull on each other. But the two north poles will push each other away. ... A compass is a tiny magnet balanced on a point so it can turn freely.

The final pressure of the gas in the container is 4 atm

From the question given above, the following data were obtained:

Initial volume (V₁) = 4 L

Initial temperature (T₁) = 300 K

Initial pressure (P₁) = 1 atm

Final temperature (T₂) = 600 K

Final volume (V₂) = 2 L

[tex]\frac{P_{1} V_{1} }{T_{1}} = \frac{P_{2} V_{2}}{T_{2}}\\\\\frac{1 * 4}{300} = \frac{P_{2} * 2}{600} \\\\[/tex]

Cross multiply

300 × 2 × P₂ = 4 × 600

600 × P₂ = 2400

Divide both side by 600

[tex]P_{2} = \frac{2400}{600} \\\\[/tex]

Therefore, the final pressure of gas is 4 atm.

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Answer:

sdfs

Explanation:

dfssdf

When 1-bromo-2-methylpropane is reacted with methoxide the same product 1-methylprop-2-ene is obtained. This reaction is attached in image below:

The SN2 reaction is a nucleophilic substitution reaction that breaks one bond while forming another. The rate-determining step of the reaction involves two reacting species. SN2 is an abbreviation for Substitution Nucleophilic Bimolecular.

The reaction is bimolecular because two molecules are present in the transition state, as indicated by the number 2 in the SN2 symbol. As a result, the rate of the reaction is affected by the concentrations of both the nucleophile and the substrate.

The SN2 reaction is a nucleophilic substitution with two components in the rate determining step. -SN2 reactions are bimolecular, with bond-forming and bond-breaking steps occurring simultaneously. There is no intermediate in -SN2 reactions.

Thus, product 1-methylprop-2-ene is obtained.

To learn more about the SN2 reaction, follow the link;

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Answer:

dipole-dipole forces

Explanation:

The important intermolecular force in hydrogen iodide HI is dipole- dipole forces. This force is arising due to the partial charge separation and permanent dipole moment.

There are various intermolecular forces which binds two atoms chemically to form a compound. Ionic bonding, covalent bonding, dipole -dipole force, hydrogen bonding, Van der Waals force etc are some of them.

Dipoles are opposite charges separated by a small distance. Dipole -dipole force is generated between the atoms when they have partial charge separation and this creates a permanent dipole moment.

Hydrogen is an electropositive atom and iodine is slightly electronegative. This difference in electronegativities leads to the bonded electrons more attracted towards iodine result in partial charge separation and dipole-dipole force.

To find more on dipole-dipole forces, refer here:

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Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

[tex]a = \frac{f}{m} \\ [/tex]

f is the force

m is the mass

From the question we have

[tex]a = \frac{5}{10} = \frac{1}{2} = 0.5 \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

Silver

Explanation:

Silver has the highest thermal conductivity of any element and the highest light reflectance.

Answer:-

a. Non metals

b. Metals

c. Metals

d. Nonmetal

e. Metalloid

f. Metalloid

g. Metal

h. Nonmetal

i. Metal

j. Metal

k. Nonmetal

l. Nonmetal

Hope this helps you!

Carbon has 6 neutrons, 6 protons and 6 electrons.

Answer:

3.) NH3

Brainliest if this helps please? (:

Answer:

c. pairs of electrons are shared between two nonmetal atoms

Explanation:

Bonding between elements solely depends on their electronegativity. When there is large difference in electronegativity, those atoms form ionic bonds. Covalent bonds form when the difference is minimal, or none at all. When the difference between electronegativities is 0 or very close to 0, then they form pure covalent bonds, or nonpolar bonds. An example of this are diatomic molecules. Diatomic molecules are two of the same atom that form nonpolar covalent bonds because their electronegativy difference is 0, as they have the same electronegativity. When the electronnegativties have bit of difference, they form polar covalent bonds.

Answer:

i think the answer is C

Explanation:

not sure plsss dont bash im a beginner

Answer:

B ) The atom has 4 electrons, just like every atom of boron

Explanation:

Answer:

CaSe

Explanation:

not sure!!

The energy of the photon with a frequency of 9.50×10¹³ Hz is 6.29×10¯²⁰ J

From the question given above, the following data were obtained:

Frequency (f) = 9.50×10¹³ Hz

Planck's constant (h) = 6.626×10¯³⁴ Js

The energy of the photon can be obtained as follow:

E = hf

E = 6.626×10¯³⁴ × 9.50×10¹³

Therefore, the energy of the photon is 6.29×10¯²⁰ J

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Answer: c

Explanation: the particles stay together but has some gain more heat they break apart.

Answer:

The mass number of an atom, which is also called the atomic mass number,  is the total number of protons and neutrons in an atom,

Explanation:

Hope this is helpful.

The momentum of the bowling ball will be greater than the rest balls.

The correct answer to the question is Option C. The 5 kg bowling ball

Momentum is defined as the product of mass and velocity i.e

Momentum = mass × velocity

If we keep the velocity of the object constant, the momentum will depend on the mass of the object.

Thus, the higher the mass, the greater the momentum and the lesser the mass, the smaller the momentum.

From the question given above,

Mass of tennis = 0.5 Kg

Mass of basketball = 2 Kg

Mass of bowling ball = 5 kg

We can see that the bowling ball has a higher mass.

Therefore, the momentum of the bowling ball will be greater than the rest balls.

The correct answer to the question is Option C. The 5 kg bowling ball

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Answer:

plutonic rocks are formed when magma cools and solidifies underground This shows us if the rock is plutonic or volcanic. When magma cools underground, it cools super slow and when lava cools above ground, it cools faster. When magma and lava cool, mineral crystals start to form in the molten rock.

Explanation:

i hope this is correct

Answer:

Temperature

Explanation:

This is because quantitative data include numerical values for example 10 degrees Celsius. However the others are qualitative data because the research can be described but not with numbers like your appearance is very nice.

Hope this helps :P

Answer:

Quantitative data is the type of data whose value is measured in the form of numbers or counts, with a unique numerical value associated with each data set. Also known as numerical data, quantitative data further describes numeric variables (e.g. How many? How often? How much?)

Explanation:

so its temp

Answer:

The fatty acids are mostly saturated.

Explanation:

Answer:

Elisa is always tired because her cells arent producing enough sugars also know as glucose forher body. another way to write out glucose is to use its equation C6H12O6.

Explanation:

Students figure out: Elisa feels tired because her cells aren't getting the molecules they need from food and air, which are necessary for her cells to function, grow, and repair. ... Students figure out: Elisa's cells are getting enough oxygen and amino acids, but not enough glucose

Answer:

Answer:

No. Although alkali metals and alkaline earth metals are found in nature, they  are not found as pure elements. Group 1 and 2 are found in their chemical compounds, not pure form.

Answer:

C,D, and A I believe

Explanation:

En este caso, dado que se describe un gas del que se conoce el volumen (60L), la presión (1.64 atm) y la temperatura (100K), es posible usar la ecuación del gas ideal para calcular los moles que hay presentes a estas condiciones:

[tex]PV=nRT[/tex]

Ahora, despejamos las moles del gas como sigue:

[tex]n=\frac{PV}{RT}[/tex]

Finalmente, reemplazamos los valores dados, teniendo en cuenta que R es 0.08206 en atmosferas, litros y Kelvin:

[tex]n=\frac{1.64atm*60L}{0.08206*100K}\\\\n=11.8mol[/tex]

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Answer:

Unlike isopropanol, hydrogen peroxide is not a type of alcohol. You might recognize its chemical formula, H2O2, as being similar to that of water (H2O). The difference is that hydrogen peroxide has two oxygen atoms instead of one. That one extra oxygen atom makes it a strong oxidizer.

This is kind of a pretty easy question:

- In order to get the number of atoms/entities of Neon, you will have to turn that 1009g of Neon into moles

-And then you have to use the moles and calculate it using Avogadro's Number which is 6.02 x 10^23

number of moles = mass/molar mass of element/compound

n = 1009g/20.18g/mol

n = 50 mol

Number of atoms/entities = 50 x  (6.02 x 10^23)

Number of atoms in 1009g of neon is 3.01 x 10^25 (scientific notation because its a really long number)