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Answer:

Full answer in explanation

Explanation:

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im guessing the Aurora Borealis

When water is boiled, the heat energy is transferred to the molecules of water, which begin to move more quickly. Eventually, the molecules have too much energy to stay connected as a liquid. When this occurs, they form gaseous molecules of water vapor, which float to the surface as bubbles and travel into the air.

Answer:

The cards (matter) can be rearranged constantly, placed with others, the total or resent amount remains constant.

Explanation:

A chemical reaction be compared to shuffling a deck of cards then the cards can be rearranged constantly, the total amount remains constant.

A chemical reaction is a procedure that causes one group of chemical components to change chemically into another.

We can learn about a substance's qualities by studying chemical reactions. We can learn about a substance's chemical characteristics by looking at how it interacts with other substances. These characteristics can be utilized to recognize an unidentified sample.

When atoms establish or break chemical bonds, chemical processes take place. Reactants are the substances that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.

Thus, A chemical reaction be compared to shuffling a deck of cards then the cards can be rearranged constantly, the total amount remains constant.

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Answer:

I think it could be bad for some people because children could be exposed to toxic content. Without parent restrictions there could be some serious harm. Another reason, is that being on social media could distract kids from homework, chores, etc. (There is also scams and fake advertising)

I personally deleted a lot of my social media acc’s last year cause of me getting stressed and sad over it, but for now I’m pretty good I’m making friends off it having lots of fun

When it could be closest to the Earth and farthest from it, the Moon passes the fastest as well as the slowest.

The only cosmic object known to contain life is Earth, which would be located third from the Sun. Although the Solar System contains enormous amounts of water, only Earth is home to liquid surface water. The oceans cover over 71% of Earth's crust, dwarfing its polar ice, lakes, including rivers.

The sole natural satellite of Earth would be the Moon. It makes up the Earth-Moon satellite system with Earth. Its diameter is equivalent to one-fourth of Earth. It should be the biggest satellite of a planet compared to the main, bigger than any existing dwarf planet, as well as the fifth biggest satellite in the Planetary System.

When sliders to make both the planet and the moon as massive as possible, and then begin the simulation. they noticed, it could be closest to the Earth and farthest from it, the Moon passes the fastest as well as the slowest.

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Answer:

The initial temperature of the ... What is the specific heat capacity of silver metal if 55.00 g of the metal.

Explanation:

Answer:

41.8 g of water.

Explanation:

To solve this, we introduce the concept of mol.

1 mol of anything contains 6.02×10²³ particles.

In this case, we talk about molecules of water.

Molecular weigh is 18 g/mol which indicates that 1 mol of water weighs 18 g.

So let's do the conversion

(18 g of water / 6.02×10²³ 1 mol of molecules) . 1.4×10²⁴ molecules = 41.8 g

Answer:

Magnesium chloride.

Explanation:

When magnesium and chloride react with each other produces magnesium chloride. Magnesium belongs to second group in the periodic table which means it has two electrons in its outermost shell while on the other hand, chlorine belongs to seven group which means it has seven electrons in its outermost shell so it needs one electron to become stable. So in the reaction, magnesium loses two electrons and become cation whereas two chlorine atoms receives two electrons from magnesium and become anion. Ionic bond type is present between magnesium and chlorine atoms.

Answer:

Explanation:

The pH of a solution can be found by using the formula

[tex]pH = - log [ {H}^{+} ][/tex]

From the question we have

[tex]pH = - log(1.0 \times {10}^{ - 2} ) \\ = 2[/tex]

We have the final answer as

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Answer:

The main properties of water are its polarity, cohesion, adhesion, surface tension, high specific heat, and evaporative cooling.

Explanation:

Boiling Point and Freezing Point.

Surface Tension, Heat of Vaporization, and Vapor Pressure.

Viscosity and Cohesion.

Solid State.

Liquid State.

Gas State.

Answer:

The potential energy of the products is greater than the potential energy of the reactants

Explanation:

i just took the test

In an endothermic reaction, activation potential energy of reactants is less than that of the products. Reactants in endothermic reaction are absorbing enough heat energy to overcome this barrier potential. Hence, option B is correct.

An endothermic reaction is the one in which heat energy is absorbed by the reactants from the surroundings. In endothermic reactions, the enthalpy change is positive.

The minimum energy that the reactants have to acquire for effective collision and reaction is called the activation energy. By absorbing heat energy reactants becomes  more energetic and overcome this activation potential.

Therefore, in an endothermic reaction, the activation potential of products will be higher than that of the reactants and the energy diagram  clearly exhibit this transition in energy. Hence, option B is correct.

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Answer:

The correct answer is - 100 grams.

Explanation:

The solubility graph is a very useful tool because it tells you the amount of solute that can be dissolved per  100 mL  of water in order to have a saturated solution of potassium nitrate at a given temperature.

In order to find the solubility of the salt at  30 ∘ C , start from the  30 ∘ C

mark on the graph and move up until you intersect the curve. At the point of intersection, move left until you intersect the  y  axis and read off the value that you land on which is 200. However, it is for 100 ml so half the value you read:

200/2 = 100 gram .

So, solubility  ≈  100 g / 50 mL water

So, a saturated solution of solute will hold about  100 g  of dissolved solute, that is of dissociated solute, per 50 mL  of water at  30 ∘ C .

Answer:

I think A

Explanation:

Grams are the unit of weight or the mass that is the multiplication of the moles and the molar mass of the substance. The mass of hydrogen gas produced is 6.06 gm.

Mass is calculated in grams by multiplying the number of moles of the substance and the molar mass of the given molecule or compound.

Given,

Moles (n) of hydrogen = 3 mol

Molar mass of dihydrogen = 2.007 g/mol

Mass is calculated as:

[tex]\begin{aligned} \rm Mass &= \rm moles \times molar\; mass\\\\&= 3 \times 2.007\\\\&= 6.06\; \rm gm\end{aligned}[/tex]

Therefore, option D. 6.06 gm is the mass of hydrogen gas.

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Answer:2.00

Explanation:

Answer:

A river flowing at a certain speed comprises kinetic energy as water has certain velocity and mass

Explanation:

Answer: A river flowing at a certain speed or a moving car

Explanation:

Answer:

Robert Boyle

Explanation:

Robert Boyle was an Irish chemist and is famously referred to as the first modern chemist. He was born on the 25th of January, 1627 in Lismore, Ireland and died on the 31st, December 1691, London, United Kingdom.

Robert Boyle was the first to determine the relationship between the pressure and volume of a gas.

Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas.

Mathematically, Boyles law is given by;

[tex] PV = K[/tex]

[tex] P_{1}V_{1} = P_{2}V_{2} [/tex]

Where;

V1 and V2 represents the initial and final volumes respectively.

T1 and T2 represents the initial and final temperatures respectively.

Here heat is absorbed to break the crystalline nature of ice and to make well separation between water molecules.

Explanation:

Latent heat, energy absorbed or released by a substance during a change in its physical state (phase) that occurs without changing its temperature. ... Ice cubes melting as their temperature rises. During melting, the ice absorbs latent heat, which is used to change the state of the water from ice to liquid water.

Answer:

La respuesta está en la explicación

Explanation:

Al realizar este análisis, el químico estará obteniendo la masa que la sustancia desconocida ocupa en un volumen determinado, a esto se le conoce como La Densidad de la Sustancia.

La densidad se puede definir como la masa (En gramos) que pesa una sustancia que ocupa 1mL. Así, la densidad de esta sustancia será:

38.5g / 45mL =

0.856g/mL es la densidad de esta sustancia

Ahora, debes identificar en la tabla, cuál sustancia tiene una densidad similar a la obtenida y, de esta manera, podrías saber a cuál sustancia corresponde.

Answer:

Liquid water is held together by hydrogen bonds. (Liquid water has fewer hydrogen bonds than ice.) Oils and fats not have any polar part and so for them to dissolve in water they would have to break some of water's hydrogen bonds. Water will not do this so the oil is forced to stay separate from the water.

Answer:transfer oxygen through your blood

Explanation:

Answer:

coordinate the muscles that control breathing

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