help with the 3rd question plslsls I’ll brainlist.

Answer:

Look in explanation:

Explanation:

The definition of temperature is the measure of kinetic energy(which is the energy used to measure motion). Since phase changing is only changing the energy, the kinetic energy will not change. There is only energy used to separate the molecules. You can see on a phase change graph that the temperature stays constant during a phase change and will ONLY change after the change has already been done.

Answer:

Jjjiiiiiiiikiioioiiiii99ooi

Answer:

bussy

-/////////////-

Explanation:

Answer: its asking for what gases make up that planet

Explanation:

for example: jupiter is made up of 90% hydrogen ~10% helium and <1% hydrogen.

Answer:

1, 2 & 3

Explanation:

. A chemist investigates the boiling point, melting point, and flammability

of a compound called acetone, a component of nail polish remover.

Which of these properties are physical properties and which are

chemical properties?

Physical ( boiling point and melting point ).

Chemical ( flammability )

Among the properties listed (melting point, flammability, and boiling point), only the flammability of acetone is a chemical property. The other properties (melting point and boiling point) are physical properties since they are associated with changes in state .

The correct option is 1 .

The melting point of a substance is the temperature at which it changes from a solid to a liquid state. This is a physical property because it does not involve a change in the chemical composition of the substance. However, acetone is a liquid at room temperature, and therefore, it does not have a well-defined melting point. It would vaporize (evaporate) instead of melting.

Flammability is a chemical property. It refers to the ability of a substance to undergo combustion when exposed to a flame or ignition source. It involves a chemical reaction, as the substance interacts with oxygen to produce heat and light.

The boiling point of a substance is the temperature at which it changes from a liquid to a gas state. This is a physical property, similar to the melting point, as it does not involve a change in the chemical composition of the substance.

Hence , 1  is the correct option

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Answer:

2.4 × 10-1

Explanation:

Answer:

1) Heterogeneous mixture

2). homogeneous mixture

3) water is solvent and sugar is solute

4). sublimation process

heterogeneous

homogeneous

sugar is solvent and water is solute

???

Answer:

d = 44 km (you have the answer?)

Explanation:

time = 35 minutes * 1 hour / 60 minutes

time = 0.58333 hours.

D = r * t

r = 75 km / hr

t = 0.58333 hours

d = 75 * 0.58333

d = 43.74 km

Answer:

Show me the previous question so I can help

Answer:

Yeah

Explanation:

Answer:

H, B, G, D, E, C, A, F

explanation: the ones that are the deepest are the oldest

Answer:

Hi, There! your Answers are Below And Are 100% Correct

Symbols are the basis of culture. A symbol is an object, word, or action that stands for something else with no natural relationship that is culturally defined

Explanation: The Answer to your Other Question Is In the Pic :)

(Dont forget to mark thanks)

The answer is FALSE. I did it on ck-12

Answer:

Gravitational potential energy is one type of potential energy and is equal to the product of the object's mass (m), the acceleration caused by gravity (g), and the object's height (h) as distance from the surface of the ground (the body). In this example, a 3 kilogram mass, at a height of 5 meters, while acted on by Earth's gravity would have 147.15 Joules of potential energy, PE = 3kg * 9.81 m/s 2 * 5m = 147.15 J. The energy added to the system by the crane's swing is the gravitational potential energy gained by the change in the wrecking ball's height. We'll need to use trigonometry to determine the height based on the cable length and angle, calculate the potential energy gained, and convert it to kinetic energy.

Number of men required to stand on top of each other to reach moon from earth are :

[tex] \boxed{ \boxed{ \: \: \: \: \: \: \: 210320000 \: \: \: \: \: \: \: }}[/tex]

Answer:

10 electrons

The d subshell can hold a maximum of 10 electrons.

Explanation:

Answer:

Natural Shelters Do not overlook natural formations that provide shelter. Examples are caves, rocky crevices, clumps of bushes, small depressions, large rocks on leeward sides of hills, large trees with low-hanging limbs and fallen trees with thick branches.

Answer:

the shelter made from nature for wild animals

The following statements are classified as true or false

The bonds between water molecules are stable....... False

As temperature drops the bonds between water molecules are less likely to break........ True

Ice is denser than liquid water at all temperatures..... False

The polar covalent bonds between hydrogen and oxygen atoms within a water molecule create slight positively and negatively charged ends to the molecule......True

The fluid nature of water is due to hydrogen bonds continually breaking and reforming.... True

A hydrogen atom of one water molecule binds via a hydrogen bond to a hydrogen atom of another water molecule....False

Bonds between water molecules are stronger than the bonds between the atoms within a water molecule.....False

Water is a polar substance. Polar substances have a positive end and a negative end. The positive end of water is the hydrogen atom while the negative end is the hydrogen atom.

Hydrogen bonds are formed when the hydrogen atom of one water molecular is connected to the oxygen atom of another water molecule via dipole-dipole interaction.

Hydrogen bonds are weaker than the normal covalent bonds that exist between hydrogen and oxygen atoms in water molecule.

The maximum density of water is obtained at 4°C. Below this temperature, the density water expands hence the density of ice is less than the density of water.

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Answer:

D! I had this question for a test last year :)

Answer:

b

Explanation:

it is experimental and can be changed

Answer:

Velocity is vector quantity. So it needs direction in addoition to speed.

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of its speed and direction of motion.

Answer:

First of all, Energy is released when water molecules bond.

Explanation:

When a bond is formed its stability increases from their respective atoms.  So energy is released but when we are breaking a bond we are changing a compound to a lower energy state to higher energy state it's stability decreases and requires a bit of extra energy higher stability of bond higher energy required to break it…

Answer:

A popular example of an endothermic chemical reaction is photosynthesis.

...

Exothermic Reactions.

Endothermic Reaction    Exothermic Reaction

The energy is absorbed from the surrounding into the reaction The energy is released from the system to its environment.

Energy in the form of heat Energy is released as heat, electricity, light or sound.

Explanation:

Exothermic reactions transfer energy to the surroundings. ... The reaction that does the complete opposite (it absorbs heat) is an endothermic reaction. The energy is usually transferred as heat energy, causing the reaction mixture and its surroundings to become hotter.

The volumes that are equal to one liter are 1 dm and 1000 cm and can be seen in Option B and D respectively. The information below shows the calculation to arrive at the answer.

Dimensional analysis can be defined as the method of conversion from one given unit to another. It is often required to deal with measures that are extremely small (e.g size of an atom) or extremely big, In such circumstances, a conversion between metric measuring units is typically essential.

We are to determine which volumes in the given option are equal to 1 Liter.

Following the International System of Units (SI);

a.

10° nl = 10 nanoliters

10 nanoliters = 1 × 10⁻⁸ Liters

∴

It is incorrect

b.

1 dm = 1 cubic decimeter

1 cubic decimeter is equivalent to 1 Liter.

∴

Option B is correct

c.

10 ml = 10 milliliters

10 milliliters = 0.01 Liter

∴

Option C is incorrect

d.

1000 cm = 1000 centimeters

1 cm = 0.001 Liter

∴

1000 cm =  1 × 0.001 Liters

1000 cm =  1 Liters

Option D is correct

e.

100 dL = 100 deciliters

1 deciliter = 0.1 Liters

∴

100 deciliters = 10 Liters

As such, this option is also incorrect.

Therefore, we can conclude that Only Option B and D are the volumes that are equal to one Liter.

Learn more about Unit conversion here:

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Answer:

True

Explanation:

It all starts out going through your mouth in which you have to chew the food to swallow it.

Answer:

Recall the two conceptual steps necessary to dissolve a solute and form a solution

Key Points

There are two conceptual steps to form a solution, each corresponding to one of the two opposing forces that dictate solubility.

The first conceptual step is dissolution, which corresponds to the force of the solvent-solvent and solute-solute intermolecular attractions that needs to be broken down.

The second conceptual step is solvation, which corresponds to the force of the solute-solvent intermolecular attraction that needs to be formed in order to form a solution.

Many intermolecular forces can contribute to solvation, including hydrogen bonding, dipole-dipole forces, Van Der Waals forces, and ion-dipole interactions.

Term

intermolecular forcesattractive and repulsive forces between molecules

The strength of the intermolecular forces between solutes and solvents determines the solubility of a given solute in a given solvent. In order to form a solution, the solute must be surrounded, or solvated, by the solvent. Solutes successfully dissolve into solvents when solute-solvent bonds are stronger than either solute-solute bonds or solvent-solvent bonds.

Qualitatively, one can determine the solubility of a solute in a solvent by using the rule “like dissolves like”. In general, solutes whose polarity matches that of the solvent will generally be soluble. For example, table salt (NaCl) dissolves easily into water (H2O) because both molecules are polar.

Intermolecular Forces and Their Importance in Solution Formation

There are two conceptual steps to form a solution, each corresponding to one of the two opposing forces that dictate solubility. If the solute is a solid or liquid, it must first be dispersed — that is, its molecular units must be pulled apart. This requires energy, and so this step always works against solution formation (always endothermic, or requires that energy be put into the system).

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Answer:

B. Electrons.

Answer:

B. Electrons

Explanation:

Electrons are held in their shells by an electrical force, so it has to be Electrons.

hope i helped

Answer:  V1/V2 = 0.357,

V2 = (V1/0.357) or 28.0*V2

Explanation:  Use the combined gas law:  P1V1/T1 = P2V2/T2  We want to find V1/2 (or V2/V1).  Rearrange:

V1/V2 = (P2/P1)(T1/T2)

The units all cancel.  Temerature is constant, so (T1/T2) = 1.

V1/V2 = (125/350)*(1)

V1/V2 = 0.357

Answer:

Every object you touch, see, taste, or smell during the day is a chemical, no matter what the signage says on some containers of “Contains no chemicals.” It would seem to me that knowing as much as possible about these objects would be of benefit to mankind, and hence chemistry becomes of great advantage to us all. The science of chemistry really has no disadvantages, but we humans can be at a disadvantage if we do not bother to learn, for example, that cyanide should not be part of your diet.

I hope it helps :) pls mark as the branliest