What type of orbitals best describe the bond between the adjacent oxygens in peroxyacetic acid?

Answer:

Explanation:

Element    #of protons     Mass #.      # of electrons      Atomic #.   Neutron

 Se.               34.                   78.96.                  34                     34           45
             

Si.                 14.                      28.                       14.                   14           14

H.                   1.                       1.                       1                         1               0

Ca.                  20.                 40.078.                20.                  20.              21

Fe.                  26.                  56.                         26.                 26.             30

Na.                  11.                    23.                       11.                    11.                12

Answer:

Sodium - malleable, soft, and shiny

Silicon - has properties of both metals and nonmetals

Bromine - highly reactive gas

Argon - non-reactive gas

Explanation:

Sodium is an alkaline metal. Just like other alkaline metals, it's malleable, soft, and shiny.

Silicon is a metalloid. Metalloids are elements that have properties of both metals and nonmetals.

Bromine a highly reactive chemical element. It is a fuming red-brown liquid at room temperature that evaporates to form a similarly coloured gas.

Argon is a noble gas. Just like other noble gases, it's non-reactive.

Answer:the first answer is correct and 8 is O, Ge, Mn

Explanation:

Answer:

Atoms, and chemical make up

Explanation:

Our bodies and any other terrestrial body are formed with atoms, those same atoms from a chemical make-up that creates items, such as water with 2 hydrogen atoms and 1 oxygen atom is formed. In essence, we all are about atoms and chemical makeup is the instruction on how to build us

Answer:

It is a wrong answer

• It's in theory that 1 hour = 60 minutes

\({ \tt{50 \: hours = (50 \times 60) \: minutes}}\)

• It's in theory that 1 minute = 60 seconds

\({ \tt{(50 \times 60) \: mins = \{(50 \times 60) \times 60 \} \: sec}}\)

» Therefore, correct expression is;

\({ \boxed{ \tt{50 \: hours = (50 \times 60 \times 60) \: seconds}}}\)

Answer:

Valence electrons are the electrons on the outermost energy level of an

atom.

The correct answer will be Valence electrons are the electrons on the outermost energy level of an atom.

The question is mostly solved. The definition of heat is used for this problem which tells us:

Where,

Q is the heat added to the system, 120 J

m is the mass of the metal, 5.0 g

Cp is the specific heat of the metal, 0.385J/g°C

dT is the change of temperature:

T2 is the final temperature, unknown

T1 is the initial temperature, 22°C

We clear the final temperature from the equation:

Now, we replace the known data:

Answer:

The final temperature of the metal will be 84°C

The change in the temperature will be 84°C-22°C=62°C

Diatoms are single-celled algae that have a silica (silicate) shell called a frustule.

Diatoms are photosynthetic organisms and are known for their intricate and diverse shapes. Diatoms are commonly found in freshwater and marine environments and play a significant role in the global carbon cycle.

Micrite is a fine-grained carbonate sedimentary rock composed of tiny carbonate particles. It forms through the precipitation and accumulation of carbonate minerals, such as calcite or aragonite, in marine environments. In the case of chalk, which is primarily composed of microscopic fragments of calcium carbonate from marine organisms, recrystallization can occur at the ocean bottom under specific conditions, leading to the formation of micrites.

Therefore, it's important to note that chert, marble, and quartzite are not the typical products of recrystallization of chalk at the ocean bottom.

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Answer:

C₄H₁₂ + 7O₂ --> 4CO₂ + 6H₂O

Explanation:

Organic molecules react with O2 to create water and CO2 in combustion processes. C4H12 is an organic molecule that combines with O2 to create water and CO2 as shown in the reactions.

As a result, this is the sole reaction that obeys the general combustion equation.

Answer: The layers of the rocks in one region of the parks are smooth and distinct, which are evidence of many, many years of deposition. The layers on the rocks are because of different deposition of sediments. Different sediments deposited over the rocks through wind, water and ice over the ages

Explanation:

Answer: The layers of the rocks in one region of the parks are smooth and distinct, which are evidence of many, many years of deposition. The layers on the rocks are because of different deposition of sediments. Different sediments deposited over the rocks through wind, water and ice over the ages

Hope we helped alot! :)

First, let's remember the formula to calculate an object's density:

Then, we analyze what we have:

We need to determine the volume, so we transform our formula like this:

We replace our data:

Then, the answer is that the volume equals 12.4 cm^3.

Answer:

Percient yield of reaction: 85 %

Explanation:

The reaction is:

PCl₃ + 3H₂O → H₃PO₃ + 3HCl

We only have data from the chloride, so we assume water is in excess. We convert the mass to moles:

62 g . 1mol / 137.32 g = 0.452 mol

If ratio is 1:3, from 0.452 mol we would produce three times as big, that amount. (0.452 . 3) = 1.36 moles of HCl.

We convert the amount to mass.

1.36 mol . 36.45g / 1mol = 49.4 g

This value of produced HCl is the theoretical yield. To determine the percent yield we make:

(Yield produced / Theoretical yield) . 100

(42 g / 49.4g) . 100 = 85%

Answer:

Yes it is 85.0%

Explanation:

The density of the substance having a mass of 2.0 g is 0.4 g/mL (Option D)

First, we shall obtain the volume of the substance. This can be obtained as follow:

Volume of substance = (Volume of water + substance) - (Volume of water)

Volume of substance = 75 - 70

Volume of substance = 5 mL

Finally, we shall determine the density of the substance. This is illustrated below:

Density = mass / volume

Density of substance = 2 / 5

Density of substance = 0.4 g/mL

Thus, the density is 0.4 g/mL (Option D)

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The last third-party candidate to win one or more states was George Wallace of the American Independent Party in 1968.

Who was George Wallace?

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Answer: It depends

Explanation: If you’re using an electric kettle then yes, it’s true!

Answer:

A. The energy increases the molecular motion and the kinetic energy of the substance.

Explanation:

When a substance absorbs energy, the molecules will move faster because there will be more vibrations and collisions.

As a result of more molecular motion, the kinetic energy will increase because there is more movement.

Answer:

A

Explanation:

heat is how hot something is

The number of moles of a substance is calculated from the given weight of the substance and its molecular mass by using the formula:

No. of moles = \(\frac{Mass of substance in grams}{Molecular mass of substance}\)

Molecular mass of Na₂SO₄.10H₂O is calculated to be

(23×2)+32+(16×4)+(10×18) = 46+32+64+180 = 322 g/mol

Thus, for 483g of Na₂SO₄.10H₂O, the number of moles would be

= \(\frac{322}{483}\) = 0.67 mol

For every 1 mole of Na₂SO₄.10H₂O, there are 2 moles of Na⁺ and 1 mole of SO₄²⁻.

Thus, 0.67 moles of Na₂SO₄.10H₂O will have 0.67×2= 1.34 moles of Na⁺ and 0.67 moles of SO₄²⁻.

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Pulp

distillation

chromatography

Acetone is captured and cooled.

Substance A is rice, and substance B is sugar.

To separate the components of a mixture the substances to be separated must differ in a given physical property.

In chemistry, there are diverse separation techniques used to separate the components of a mixture. Separation depends on differences in a given physical property such as boiling point, solubility in a solvent, difference in particle size etc.

Filtration can be used to separate a solid from a liquid hence it can be used to separate pulp from orange juice.

To separate water and alcohol, distillation is used because such a separation depends on the difference in the boiling points of water and alcohol. Water boils at a higher temperature than alcohol hence the mixture can be separated by distillation.

Chromatography is a method of separation that is dependent on how quickly a the components of a  mixture move through a stationary phase.

Acetone has a lower boiling point than water hence it collected first and cooled before water.

Clearly, substance A must be a solid since it is filtered out after adding water. Substance B must be a water soluble substance which can be recovered from water by evaporation to dryness. Hence substance A is rice, and substance B is sugar.

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Answer:

3.28

Explanation:

At some point it is best to write out an equation to cancel out the units you don't want and to get to the units that you do want.  So if you write this out in an equation, you can see how you get to the answer.

43 m           3.28 ft             ?  ft

--------   X    -----------  =   --------------

   1                  1 m                  1

You can see now that the meters on the top will cancel out the meters on the bottom so all you are left with is the feet unit.  When you write out the equation you put the unit on the bottom that you want to get rid of (meter).  You put the unit you want to get to on the top which is feet.   At this point you just have to know how many feet 1 meter is equal to and plug those number in.  1 meter is equal to 3.28 feet.

The chemical formula of water is H2O, which indicates that each water molecule consists of two hydrogen atoms and one oxygen atom.

The chemical formula of water is the same whether it is found naturally in rain or the ocean or synthesized in a lab. In natural sources of water, such as rain and the ocean, water is created through a variety of natural processes involving the water cycle, which includes evaporation, precipitation, and condensation.

However, when water is synthesized in a lab, it is typically done by combining hydrogen gas and oxygen gas in the presence of a catalyst.

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The Fahrenheit temperatures corresponding to Celsius 31°C, 21°C, -9°C, and -15°C are approximately 88°F, 70°F, 16° F, 5°F.

To find the equation relating Fahrenheit temperature (F) to Celsius temperature (C), we can use the given freezing and boiling points of water on both scales.

We know that at the freezing point of water:

Fahrenheit temperature = 32°F

Celsius temperature = 0°C

And at the boiling point of water:

Fahrenheit temperature = 212°F

Celsius temperature = 100°C

We can use these two points to find the equation of the line relating F and C.

First, we find the slope of the line:

Slope = (Change in Fahrenheit temperature) / (Change in Celsius temperature)

= (212°F - 32°F) / (100°C - 0°C)

= 180°F / 100°C

Next, we find the y-intercept of the line:

Using the freezing point of water (0°C, 32°F):

32°F = Slope * 0°C + y-intercept

32°F = 0.18 * 0°C + y-intercept

y-intercept = 32°F

Therefore, the equation relating Fahrenheit temperature (F) to Celsius temperature (C) is:

F = 1.8C + 32

Now, we can use this equation to find the Fahrenheit temperatures corresponding to the given Celsius temperatures:

For 31°C:

F = 1.8 * 31 + 32 = 87.8 ≈ 88°F

For 21°C:

F = 1.8 * 21 + 32 = 69.8 ≈ 70°F

For -9°C:

F = 1.8 * -9 + 32 = 15.8 ≈ 16°F

For -15°C:

F = 1.8 * -15 + 32 = 5 ≈ 5°F

Therefore, the Fahrenheit temperatures corresponding to 31°C, 21°C, -9°C, and -15°C are approximately 88°F, 70°F, 16° F, 5°F.

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Answer: A bond formed between atoms due to sharing or complete transfer of electrons is termed as "atomic bond". These are the intramolecular forces that hold atoms together in molecules.

ΔG for the formation of H₂O is -228.6 kJ.

Gibb's free energy of the reaction is calculated as:

ΔG = G for product - G for reactant

Given chemical reaction is:

4NH₃(g) + 5O₂(g) → 4NO(g) + 6H₂O(g)

In the question, given that:

ΔG for the reaction = -957. 9 kJ

ΔGf of NH₃ = -16. 66 kJ/mol

ΔGf of NO = 86. 71 kJ/mol

Equation for ΔG will be written as:

ΔG = (ΔGf of NO + ΔGf of H₂O) - (ΔGf of NH₃+ ΔGf of O₂)

ΔGf of O₂ = 0

-957. 9 = (4×86. 71 + 6×ΔGf of H₂O) - (4×-16. 66 + 5×ΔGf of O₂)

-957. 9 = 346.84 + 6ΔGf of H₂O + 66.64

ΔGf of H₂O = (-957. 9 - 346.84 - 66.64) / 6

ΔGf of H₂O = -228.56 kJ ≅ -228.6 kJ

Hence, option (1) is correct i.e. -228.6 kJ is the ΔGf of H₂O.

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When propanal reacts with methylmagnesium bromide (CH₃MgBr) followed by the addition of dilute acid, the major organic product formed is 3-hydroxypropanal.

On the other hand, when propanone reacts with methylmagnesium bromide (CH₃MgBr) followed by the addition of dilute acid, the major organic product formed is 3-hydroxy-2-methylpropanal.

A dilute acid is a solution that contains a relatively small amount of acid dissolved in a solvent, usually water. Dilute acids are commonly used in various chemical and industrial processes, as well as in the laboratory.

In a dilute acid solution, the concentration of acid is low enough that it is not considered to be a concentrated or strong acid. The strength of an acid refers to its ability to donate protons (H+) to a solution, and is related to the concentration of the acid in the solution. Dilute acids typically have a lower pH value and are less reactive than concentrated acids.

Common examples of dilute acids include dilute hydrochloric acid (HCl), dilute sulfuric acid (H2SO4), and dilute nitric acid (HNO3). These acids are used in a variety of applications, such as cleaning and etching metals, producing fertilizers, and in the production of pharmaceuticals.

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Answer:

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Answer:

The second student is right.

Explanation:

The coyote feed on not only phalaropes but many other organisms present in the environment for its survival. There are many other organisms present in the ecosystem such as mice, squirrel, cactus fruit etc. The coyote feeds on phalaropes, the phalaropes feeds on brine shrimp and the brine shrimp feeds on algae for its survival so in this way the ecosystem moves in the forward direction. The coyote feeds on phalaropes so the energy that is present in phalaropes transferred into coyote which only 10 % while the remaining is released in the atmosphere in the form of heat energy.