answer truthfully:))​

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:

1.238 years will it take

Explanation:

The isotope decay of an atom follows the equation:

Ln[A] = -kt + ln[A]₀

Where [A] could be taken as the amount of the isotope after t years

[A] = 1.00mg

t = ?

k is the decay constant; k = ln2 / Half-life

k = ln 2 / 2.86 years = 0.2424 years⁻¹

[A]₀ is the initial amount of the isotope = 1.35mg

Replacing:

ln1 = -0.2424years⁻¹*t + ln 1.35

0.2424years⁻¹*t = ln 1.35

t =

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:

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: The molarity of given solution is 0.0235 M.

Explanation:

Given : Volume of solution = 511 mL

Convert mL into L as follows.

[tex]1 mL = 0.001 L\\511 mL = 511 mL \times \frac{0.001 L}{1 mL}\\= 0.511 L[/tex]

Mass of [tex]NH_{3}[/tex] (solute) = 205 mg

Convert mg into gram as follows.

[tex]1 mg = 0.001 g\\205 mg = 205 mg \times \frac{0.001 g}{1 mg}\\= 0.205 g[/tex]

As molar mass of [tex]NH_{3}[/tex] is 17 g/mol. Hence, number of moles of [tex]NH_{3}[/tex] are calculated as follows.

[tex]No. of moles = \frac{mass given}{molar mass}\\= \frac{0.205 g}{17 g/mol}\\= 0.012 mol[/tex]

Molarity is the number of moles of a solute dissolved in a liter of solution.

[tex]Molarity = \frac{no. of moles}{Volume (in L)}[/tex]

Substitute the values into above formula as follows.

[tex]Molarity = \frac{no. of moles}{Volume (in L)}\\= \frac{0.012 mol}{0.511 L}\\= 0.0235 M[/tex]

Thus, we can conclude that the molarity of given solution is 0.0235 M.

Answer:

115 mL of a gas is at 45.8 kPa and 57.2°C. What is the volume of the gas at 99.3 kPa and 112.3°C?[5] 11. ... What is the pressure of 62.76 g of carbon dioxide (CO2) gas if it occupies a volume of 35,000 mL at standard temperature?

Explanation:

By using gas law , the volume will be 61.9 mL .

According to the gas law, the pressure of a gas generally directly proportional to its temperature at a fixed volume.

Gas law can be represented as:

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

Calculation of volume with the aid of gas law:

It is given that, [tex]P_{1}[/tex] = 45.8 kPa, [tex]P_{2}[/tex] = 99.3 kPa , [tex]T_{1}[/tex] = 57.2°C, [tex]T_{2}[/tex] = 112.3°C, [tex]V_{1}[/tex] = 115 mL .

Now, put the values of given data in gas laws equation.

(45.8kPa)(115mL)/(330K)= (99.3kPa)([tex]V_{2}[/tex])(385.3K)

[tex]V_{2}[/tex] = 61.9 mL

Therefore, the volume will be 61.9 mL .

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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

Hope this helps you

Answer:

[tex]V_2= 38.9mL[/tex]

Explanation:

Hello there!

In this case, since this is a problem about the combined gas law because the temperature, volume and pressure undergo a change:

[tex]\frac{P_2V_2}{T_2}= \frac{P_1V_1}{T_1}[/tex]

Thus, since we need the final volume, V2, we solve for it as shown below:

[tex]V_2= \frac{P_1V_1T_2}{T_1P_2}[/tex]

Now, we plug in the data to obtain:

[tex]V_2= \frac{1.30atm*46.0mL*(2.09+273)K}{(5+273)K*1.52atm}\\\\V_2= 38.9mL[/tex]

Best regards!

Answer:

Full answer in explanation

Explanation:

Hope this helps!

Answer:2.00

Explanation:

im guessing the Aurora Borealis

Answer:

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

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.

Answer:

Do you have an idea that you want the design to be about? if you do I can help! if not I can give you ideas you can try to work with and you can tell me if theyre good or not.

Explanation:

Answer:

The mass of oxygen will be 19.53g

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:

Combination reaction is taken during this reaction

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.

Respuesta:

90.0 %

Explicación:

Paso 1: Escribir la ecuación química balanceada

N₂ + 3 H₂ ⇒ 2 NH₃

Paso 2: Calcular el rendimiento teórico de NH₃ a partir de 140 g de N₂

En la ecuación balanceada, participan de N₂: 1 mol × 28.01 g/mol = 28.01 g y de NH₃: 2 mol × 17.03 g/mol = 34.06 g.

140 g N₂ × 34.06 g NH₃ /28.01 g N₂ = 170 g NH₃

Paso 3: Calcular el rendimiento porcentual de NH₃

El rendimiento experimental de NH₃ es 153 g. Podemos calcular el rendimiento porcentual usando la siguiente fórmula.

R% = rendimiento experimental / rendimiento teórico × 100%

R% = 153 g / 170 g × 100% = 90.0 %

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:

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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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:

the concentration of hydrogen iodide will be higher than it was in the original equilibrium conditions.

Answer:

yes it rotates on its own axis

Explanation:

rotation is the movement/spinning of the earth on its own axis

revolution is the movement of the earth around the sun

Answer:

yes, otation is the movement/spinning of the earth on its own axisrevolution is the movement of the earth around the sun

Explanation:

Answer:

Explanation:

The answer is 202