How can we increase the surface area of reactants?
add a catalyst
O place them in a flame
dissolve them in water
o add more particles to the solution

Answer:

you are looking at the official nkana fc website

The volume of 0.15M NaOH that could be produced with only 5 grams of NaOH and water is 0.83L.

The volume of a substance can be calculated using the following expression:

Molarity = number of moles ÷ volume

The number of moles of NaOH can be calculated by dividing the mass of NaOH by its molar mass.

Molar mass of NaOH = 40g/mol

n = 5/40

n = 0.125moles

Volume of NaOH = 0.125mol ÷ 0.15M

Volume = 0.83L

Therefore, the volume of 0.15M NaOH that could be produced with only 5 grams of NaOH and water is 0.83L.

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Given the molecular formula of aspirin, C₉H₈O₄, in 1.50 moles of aspirin there are 13.5 moles of carbon.

The mole is the SI base unit for the amount of matter. 1 mole of particles contains a number of Avogadro's particles.

We have 1.50 moles of aspirin, C₉H₈O₄. According to the molecular formula, the molar ratio of C₉H₈O₄ to C is 1:9.

1.50 mol C₉H₈O₄ × (9 mol C/1 mol C₉H₈O₄) = 13.5 mol C

Given the molecular formula of aspirin, C₉H₈O₄, in 1.50 moles of aspirin there are 13.5 moles of carbon.

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In keeping with the general trends, K-Br will have the smallest bond energy. The bond energy refers to the energy that keeps the atoms in a bond together.

Bond energy is the energy that is required to hold atoms together in a bond. This energy must also be supplied when the atoms are to be separated.

We have the bond energies of each of the bons in the question, we have to note that the the smallest value of bond energy is Na-Br hence in keeping with the general trends, K-Br will have the smallest bond energy.

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Answer:

Chemistry B Semester Exam 5/4/2023

1. Cs-Br

2. K-C is ionic, and C-O is polar covalent

3. All molecules are in constant motion, so they all have some kinetic energy.

4. The reaction between substances A and B has a lower activation energy than the reaction between substances B and C.

5. More bond energy is absorbed on the reactants side than is released on the products side.

6. an exothermic reaction

7. Endothermic reactions have a higher activation energy. Endothermic reactions require more energy to break up the bonds of the reactants.

8. Heat must be released by the products in order to convert from the reactants.

9. Cooling a purple solution will turn it pink.

10.  Both are flexible, but one conducts electricity while the other insulates.

11. high pressure, high-temperature water extraction

12. steel + vanadium for shock absorption

13. 15

14. the number of atoms, type of elements, and mass of reactants and products are equal.

15. 64 grams

16. 1.503x10^23

17. The relative numbers of protons and neutrons can differ before and after the change, but the total number of those particles remains the same.

18. The plastic balls are a good representation of neutrons, but there is no splitting of nuclei as happens in fission.

19. beta minus decay

20. alpha decay

21. Greenhouse gases have more than two atoms, allowing them to vibrate and release radiation, warming the atmosphere.

22. cause: acid rain, consequence: destruction of crops

23. toxic bacteria in the water supply

24. it reaches hard to get to oil and gas deposits.

Answer:

About 7.9 L.

Explanation:

We can utilize the ideal gas law. Recall that:

[tex]\displaystyle PV = nRT[/tex]

Because the amount of carbon dioxide does not change, we can rearrange to formula to:
[tex]\displaystyle \frac{PV}{T}= nR[/tex]

Because the right-hand side stays constant, we have that:
[tex]\displaystyle \frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2} = nR[/tex]

Hence substitute initial values and known final values:
[tex]\displaystyle \begin{aligned} \frac{(793\text{ mm Hg})(4.65 \text{ L})}{(22 \text{ $^\circ$C})} & = \frac{(743 \text{ mm Hg})V_2}{(35\text{ $^\circ$C})} \\ \\ V_2 & = 7.9\text{ L}\end{aligned}[/tex]

Therefore, the final volume is about 7.9 L.

The enthalpy refers to the thermodynamic characteristics that have chemical systems associated with their internal energy.

The enthalpy refers to the thermodynamic features of the chemical systems associated with the energy of such systems.

Enthalpy is used to estimate the ability of the system to perform work and release energy in the form of heat.

It is well known that different types of chemical reactions may exhibit different enthalpies, which can be estimated by the internal energy, pressure of the system and volume.

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Answer:

Here you are <3

Explanation:

I attached the one I just submitted

Answer:

24.80°C

Explanation:

hope it helps...!!!

The aqueous solution and their respective properties include the following:

This is defined as the degree of acidity or alkalinity of a substance and pH from 1.0 - 6.9 is acidic, 7 is neutral while 7.1 - 14.0 is basic.

The aqueous solutions and their appropriate pH can be seen above which is the right choice.

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answer explanation:

Answer:

Testing for sulfate ions

Sulfate ions in solution, SO 4 2 -, are detected using barium chloride solution. The test solution is acidified using a few drops of dilute hydrochloric acid, and then a few drops of barium chloride solution are added. A white precipitate of barium sulfate forms if sulfate ions are present.

Explanation:

For a reaction rate that increases by a factor of 655 in the presence of a catalyst at 37°C, the activation energy of the new pathway  is mathematically given as

Ea2=89.28JKoule/mol

Generally, the equation for the rate constant  is mathematically given as

K=Ae^{Ea1/Rt}

Therefore

[tex]\frac{1}{655}=\frac{1}{8.31*3.10}(Ea2-105000)[/tex]

Ea2=89286.083Joule/mol

In conclusion, the activation energy

Ea2=89.28JKoule/mol

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Answer:

I have this work and I'm in 5th grade

Explanation:

Answer:

Archaea live in extreme environments, while bacteria can be found in most places on Earth.

Explanation:

Doing a the test now and this is the answer.

The compound is formed by addition reaction. The product is showed in the image attached.

The term addition reaction refers to a type of reaction in which a compound is added across the multiple bond. In this case, the iodine molecule is added to the olefinic bond as shown.

The structure of the product formed has been attached to this answer. The product is formed by addition across the double bond.

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Answer:

Bubonic plague is the correct answer!!!

Explanation:

mark me brainliest

Answer:

The answer is Bubonic Plague

Answer:

Warmth (in addition to sunlight) at the Earth's surface.

Explanation:

Heat radiated from Earth's surface is absorbed by water vapor molecules in the lower atmosphere. The water vapor molecules, in turn, radiate heat in all directions. Some of the heat returns to the Earth's surface. Thus, water vapor is a second source of warmth (in addition to sunlight) at the Earth's surface.

The proportion of long-tailed squirrels may have increased due to increased food availability.

The statement has it that the percentage of long tailed increased also that the long tailed are better at jumping and balancing on trees.

The first option could is tempting but saying decrease in trees would not likely support the argument.

The last option has more sound options as more food availability may lead to population increment

Hope it helps....

Answer:

3

Explanation:

pH + pOH = 14

pH + 11 = 14

pH = 3

socraticorgquestionshowdoyoucalculatethephofasolutionwhengiventheohconcentration

Anthony F  BRIAN M

Answer:

yes of course is true the

Answer:

02 has a mass of 1.78 g.

Explanation:

hope this helps

As the name implies, a secondary standard is used by standard laboratories, which include companies involved in the preparation of reagents and kits, as well as laboratories responsible to produce quality control material for use by other laboratories. They use the primary standard as the primary calibrator or primary reference material, and they calibrate their instruments against it. Smaller labs use secondary standards to calibrate control material for analysis of unknown concentrations. For smaller labs, secondary standard serves as an external quality control. As a result, it is essential that the secondary standard be standardized against the primary standard before it can be applied.

I hope this helps you

:)

Picture 1 shows choice B

Explanation:

picture 1 shows the car to which the net force is a zero

This question provides us –

__________________________________________

[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf 39.0983 \times 35.453 [/tex]

[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf 74.5513[/tex]

Using formula –

[tex]\qquad[/tex] [tex]\purple{\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{ W\times 1000}{MV}}[/tex]

[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{ 47 \times 1000}{74.5513\times 375}[/tex]

[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{47000}{27956.7375}[/tex]

[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf Molarity _{(Solution)} = \cancel{\dfrac{47000}{27956.7375}}[/tex]

[tex]\qquad[/tex] [tex] \twoheadrightarrow\bf Molarity _{(Solution)} = 1.68117M [/tex]

[tex]\qquad[/tex] [tex]\pink{\twoheadrightarrow\bf Molarity _{(Solution)} = 1.7M} [/tex]

___________________________________________

[tex]\text{Morality}= \dfrac{\text{Number of moles}}{\text{Volume}}=\dfrac{3.25}{2.78}=1.169 ~mol/L[/tex]

Answer:

Stacking bags and bundles.

Explanation:

Interlock them in rows to ensure they're secure.

Answer:

Material Storage Facilities means an uncovered area used on a permanent basis for outside

Explanation:

Material Storage Facilities means an uncovered area where bulk materials (liquid, solid, granular, etc.) are stored in piles, barrels, tanks, bins, crates, or other means.

Additional Benchmarks for Federal, State, or Municipal Facilities with Incidental Solid De-Icing Material Storage Facilities monitoring under the requirements of subparagraph (D)(ii) above shall not be subject to Benchmark requirements for Chloride or Cyanide.

Directors are fully briefed on all business related matters, risk assessment and new initiatives proposed by the Company.

Answer:

An anionic single replacement reaction.

Explanation:

Hope this helps!!!

Answer:

Substitution or Displacement maybe?

Answer:

it thinks it pollution

Explanation:

hope that helps

Answer:

32 °F

Formation. Hail forms in strong thunderstorm clouds, particularly those with intense updrafts, high liquid water content, great vertical extent, large water droplets, and where a good portion of the cloud layer is below freezing 0 °C (32 °F).

Explanation:

brainlist me and that's all I know and we have the same module I guess

The acceleration of the block will be -2 m/s² in the backward direction.

Force is defined as the product of mass of the body and the acceleration with which it is moving. Mathematically -

F = ma

It is a vector quantity. In the three dimensional coordinate system, the force vector can be resolved as -

[F] = F[x] a[x] + F[y] a[y] + F[z] a[z]

Given is a diagram in which two forces are acting on a block.

We can write -

Force 1 on block [F1] = 4 a[x]

Force 2 on block [F2] = 8 (- a[x]) = - 8 a[x]

Resultant of forces [F] = [F1] + [F2] = 4 a[x] + ( - 8 a[x]) = - 4 a[x]

Now, we know that -

F = MA

A = F/M

In vector form, acceleration will be -

[A] = - 1/m × (4 a[x])

[A] = -1/2 × (4 a[x])

[A] = - 2 a[x]

Therefore, the acceleration of the block will be -2 m/s² in the backward direction.

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Hexasulfur Dichloride

Name: Hexasulfur Dichloride

Formula: S2Cl6

Molar Mass:276.848

Example Reactions:

• S2Cl6 + 4H2O = 2SO2 + 6HCl + H2

The number of times phosphorous is greater in not visible in the data

The steps involved for calculating the times the change in phosphorus level are :

First step: Determine the difference between Phosphorus levels in 1965 and 1975

Second step: Determine the difference between Phosphorus levels in 2008 and 2014

Last step: Determine the quotient by dividing first step by second step

Hence can conclude that The number of times phosphorous is greater in not visible in the data.

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