Which of the following is true for a nuclear reaction?
O Electrons are lost
O Electrons are gained
O Identity of element changes
O ldentity of element remains same

Answer: C

Explanation:

The N2 should have a triple bond because it needs three covalent bonds to fill its outer shell. This means the two atoms need to share three electrons each.

It also serves as a nice illustration of a triple-bonded molecule. For the Lewis structure of N2, there are ten accessible valence electrons. Therefore, option C is correct.

The diagrams known as Lewis structures, often referred to as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures, depict the interactions between the atoms in a molecule as well as any lone pairs of electrons that may be present.

It contradicts the octet rule, as shown by the production of molecules, and could not account for the release of energy during the formation of covalent bonds.

The three parallel lines between the N atoms represent three bonds. This is a triple bond, with one electron from each N atom contributing to each bond. A total of 6 electrons are thus represented by this triple bond.

Thus, option C is correct.

To learn more about lewis structure, follow the link;

https://brainly.com/question/4144781

#SPJ2

Answer:

4C4HO + 4Cl2 + 13O2 → 14CO2 + 2CCl4 + 2H2O

Explanation:

Balance The Equation: C4HO + Cl2 + O2 = CO2 + CCl4 + H2O

1. Label Each Compound With a Variable

  aC4HO + bCl2 + cO2 = dCO2 + fCCl4 + gH2O

2. Create a System of Equations, One Per Element

  C: 4a + 0b + 0c = 1d + 1f + 0g

  H: 1a + 0b + 0c = 0d + 0f + 2g

  O: 1a + 0b + 2c = 2d + 0f + 1g

  Cl: 0a + 2b + 0c = 0d + 4f + 0g

3. Solve For All Variables

  a = 4

  b = 4

  c = 13

  d = 14

  f = 2

  g = 2

4. Substitute and Verify Result

  4C4HO + 4Cl2 + 13O2 = 14CO2 + 2CCl4 + 2H2O

      L R

  C: 16 16 ✔️

  H: 4 4 ✔️

  O: 30 30 ✔️

  Cl: 8 8 ✔️

hope this helps! :D

The final concentration of Chlorine gas in the flask is 0.55M.

The initial concentration of PCl5 can be calculated using the number of moles and volume:

[PCl5] = n/V = 3.2 mol / 2.0 L = 1.6 M

At equilibrium, the concentration of products and reactants remains constant. Therefore, the concentration of Cl2 can be determined using the equilibrium constant (Kc) and the initial concentration of PCl5:

Kc = [PCl3][Cl2] / [PCl5]

[Cl2] = Kc × [PCl5] / [PCl3] = 0.47 × 1.6 M / [PCl3]

Since [PCl3] is not given, we cannot determine the exact concentration of Cl2. However, the answer choices can be used to estimate the closest answer. Based on the answer choices, the closest estimate is 0.55 M, which is answer choice A.

Learn more about Chlorine gas:

brainly.com/question/13123721

#SPJ4

Answer:

A

Explanation:

We learned about this in chem a while back, pretty sure it's right

Answer:

It is widely believed that Buddhism entered China via the Silk Road under the Han Dynasty. After trade and travel was established with the Yuezhi, who by that time were forced southward toward India, Yuezhi monks began to travel with the merchant caravans; preaching their religion along the Silk Road.

Explanation:

i got this from google

Your friend is studying a specific exergonic reaction. Your friend hypothesizes that the addition of enzyme X will reduce the delta-G of this reaction, thus allowing it to proceed spontaneously.

Enzymes do not change delta-G, so this hypothesis does not fit with what is known about this reaction.

According to the second law of thermodynamics any reaction that occurs at constant temperature without input of electrical energy or photons is exergonic. An example is cellular respiration. An exergonic reaction is a chemical reaction in which the change in free energy is negative (there is a net loss of free energy). It shows a spontaneous reaction if the system is closed and the initial and final temperatures are the same. For processes that take place in a closed system at constant pressure and temperature, the Gibbs free energy is used, while the Helmholtz energy is relevant for processes that take place at constant temperature and volume.

Learn more about exergonic reaction at https://brainly.com/question/11064909.

#SPJ4

Your friend is studying a specific exergonic reaction. your friend hypothesizes that the addition of enzyme x will reduce the delta-g of this reaction, thus allowing it to proceed spontaneously. The hypothesis does not fit with what is known about this reaction because Enzymes do not change delta-G.

1) An exergonic reaction is a reaction that produces free energy. Because it releases energy rather than consuming it, this kind of reaction can occur naturally, unhindered by outside factors.

2) Chemical processes known as exergonic reactions have a negative change in free energy. The free energy of a system is used to calculate its overall quantity of available energy; negative changes signify energy release, whilst positive changes signify energy storage.

Only the activation energy is altered by enzyme.

This concept does not make sense given what is known about the reaction because enzymes do not alter delta G.

To learn more about Exergonic reaction refer

brainly.com/question/11064909

#SPJ4

Answer:

Na2CO3

Explanation:

Na2CO3 is a compound soluble in water. So the correct option is A.

The common ionic solids' solubility laws are as follows. When two rules seem to conflict with one another, the prior rule is used.

Therefore, the correct option is A

Read more about solubility, here

https://brainly.com/question/8591226

#SPJ2

Answer:

bohr didn't mention abt sub shells that are in main shells

True. Acid deposition, also known as acid rain or acid precipitation, can leach aluminum ions from soil and rock.

These aluminum ions can then be carried to bodies of water, where they can have harmful effects on aquatic organisms, including fish. Aluminum ions can damage the gills of fish, disrupt the balance of salt and water in their bodies, and interfere with their breathing and circulation systems. This can ultimately lead to negative impacts on the health and survival of aquatic life. Acid deposition refers to the process by which acidic pollutants, such as sulfur dioxide (SO2) and nitrogen oxides (NOx), are deposited onto the Earth's surface. These pollutants are primarily released into the atmosphere through human activities, including the burning of fossil fuels and industrial processes.

Learn more about Acid deposition here:

https://brainly.com/question/31554241

#SPJ11

The pre-1982 pennies are made of an alloy of 95% copper and 5% zinc, while the post-1982 pennies have a copper-plated zinc core and are 97.5% zinc and 2.5% copper.

The densities of these metals differ, with copper being denser than zinc. The density of the pre-1982 penny is 8.94 g/cm³, while the post-1982 penny has a density of 6.87 g/cm³. This means that the metal used in the core of post-1982 pennies is most likely zinc, as its density matches that of the penny. Copper is too dense to be used in the core without significantly increasing the weight and cost of the coin. Zinc is a more cost-effective choice, and the copper plating on the outside of the penny gives it the appearance and conductivity of copper.

Learn more about copper-plated zinc,

https://brainly.com/question/16239631

#SPJ4

Answer:

D.

The concentration of reactants and the concentration of products are constant.

Explanation:

pls mark as brainliest

The molarity of the NaOH solution is 0.0754 M. Answer: 0.0754 M.

Molarity can be defined as the number of moles of solute present in per liter of solution. To calculate the molarity of the NaOH solution, we need to use the given information. Given that 35.22 mL of NaOH solution completely neutralizes a solution containing 0.544 g of KHP.We can use the formula for molarity:

Molarity = (mass of solute / molar mass of solute) / volume of solution in L

First, we need to calculate the number of moles of KHP.Number of moles of KHP = mass of KHP / molar mass of KHP

Number of moles of KHP = 0.544 / 204.22 = 0.00266 mol

Now, we can use the balanced chemical equation for the reaction between NaOH and KHP:

NaOH + KHC8H4O4 → KNaC8H4O4 + H2O

From the equation, we can see that one mole of NaOH reacts with one mole of KHP. Therefore, the number of moles of NaOH used in the reaction is also 0.00266 mol.Since the volume of the NaOH solution used is 35.22 mL, we need to convert it into liters.Volume of NaOH solution used = 35.22 mL = 0.03522 L

Now we can calculate the molarity of the NaOH solution:

Molarity = number of moles / volume of solution

Molarity = 0.00266 / 0.03522

Molarity = 0.0754 M

Therefore, the molarity of the NaOH solution is 0.0754 M. Answer: 0.0754 M.

To know more about molarity visit:

https://brainly.com/question/31545539

#SPJ11

By using Graham's law, we can calculate that the molar mass of the unknown gas is 44.44 g/mol.

To answer this question, we must use Graham's law:

\(\frac{RoE(A)}{RoE(B)} = \sqrt{\frac{M(B)}{M(A)} }\)

RoE - rate of effusion

M - molar mass

In our case, we know that RoE(X) / RoE(SO₂) = 1.2. We can calculate the molar mass of sulfur dioxide, using the relative atomic masses of sulfur (32) and oxygen (16):

M(SO₂) = (32 + 2 * 16) g/mol

M(SO₂) = 64 g/mol

This means that:

\(1.2 = \sqrt{\frac{64 g/mol}{M(X)} }\)

If we square both sides of the equation we get:

(1.2)² = 64 g/mol / M(X)

1.44 = 64 g/mol / M(X)

M(X) = 64 g/mol / 1.44

M(X) = 44.44 g/mol

You can learn more about Graham's law here:

brainly.com/question/12415336

#SPJ4

Answer:

an asteroid impact or B

Explanation:

An asteroid impact most likely caused the bowl-like structure. Hence, option B is correct.

A divot are the marks made in the grass on the golf course. So, scientist named a bowl like structure form in under the ocean off the coast of eastern Mexico.

Example: the impact of asteroid ended the age of dinosaurs a 66 million years ago.

The asteroid impact in ocean made bowl type structure called divot these kilometers in size so big  as compared to a football ground.

An asteroid impact most likely caused the bowl-like structure. Hence, option B is correct.

Learn more about asteroid impact. here:

https://brainly.com/question/24233378

#SPJ6

The given equation is not a balanced chemical equation as the mass of atoms on the both reactant and product side is not equal. Therefore, this equation does not demonstrate the law of conservation of matter.

A chemical equation can be defined as the representation of a reaction with help of symbols of the substances. A chemical equation includes of reactants participating and formed products separated by an arrow in the equation.

The chemical equation in which the mass of reactants is equal to the mass of the products is called a balanced chemical equation. For that, the law of conservation of mass should be followed by a balancing of a chemical equation which says that the mass can neither be created nor destroyed.

The given chemical equation of silver oxide is:

\(Ag_2O\longrightarrow Ag+O_2\)

The number of atoms of silver and oxygen is not equal on both sides.

The balanced chemical equation will be for the above reaction:

\(2Ag_2O\longrightarrow 4Ag +O_2\)

and this equation demonstrates the law of conservation of matter.

Learn more about the balanced chemical equation, here:

brainly.com/question/15052184

#SPJ1

Answer:

No

Explanation:

In order for glucose to be produced inside the mixture, photosynthesis has to take place. The photosynthetic process requires a series of steps within an organelle called the chloroplast. The chloroplast contains the chlorophyll and other enzymes that are necessary for photosynthesis.

Once the chlorophyll is isolated, it becomes separated from the enzymes necessary for the completion of photosynthesis, and the process is truncated. When light is shined on the mixture, the majority would instead be lost as heat while some cause the chlorophyll molecules to glow.

Answer:

The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus. The gel-like matrix in which the nuclear components are suspended is the nucleoplasm.

Mass of NaCl : 5.85 g

Given

5.3 g Sodium carbonate (Na₂CO₃)

Required

Mass of NaCl

Solution

Reaction

Na₂CO₃ + 2HCl ⇒ 2NaCl + H₂O + CO₂

mol of Na₂CO₃ (MW=106 g/mol) :

= mass : MW

= 5.3 g : 106 g/mol

= 0.05

From the equation, mol ratio Na₂CO₃ : NaCl = 1 : 2, so mol NaCl :

= 2/1 x mol Na₂CO₃

= 2/1 x 0.05

= 0.1

Mass of NaCl (MW=58.5 g/mol) :

= mol x MW

= 0.1 x 58.5

= 5.85 g

Answer:

13.6 g

Explanation:

The mass of BeF₂ present in 655 ml of a solution that is 0.442 M is equal to 13.82 g.

We can calculate the concentration of a solute in a solution in terms of molarity, molality, and normality.

The molarity of a particular solution can be determined from the number of moles of a solute per unit volume of the solution.

The Molarity of the particular solution can be determined from the mathematical formula mentioned below:

Molarity = Moles/Volume of the Solution

Given, the molarity of BeF₂ solution = 0.442 M

The volume of the BeF₂ solution, V = 655 ml = 0.655 L

The molar mass of the BeF₂, M = 47.01 g/mol

Molarity of BeF₂ solution = m/(M × V)

0.442 = m/ (47.01 × 0.655)

m = 13.82 g

Therefore, 13.82 g of BeF₂ is required for the given solution.

Learn more about molarity, here:

brainly.com/question/8732513

#SPJ2

Answer:

The answer is option 4.

Explanation:

Chloroplast is the place where they absorb sunlight to perform photosynthesis to produce food.

Answer:   The initial green-colored solution of NISO4·6H2O turns into a pale greenish-blue solution with the formation of a nickel hydroxide precipitate when ammonia is added

Explanation:

When NISO4·6H2O (nickel(II) sulfate hexahydrate) is dissolved in distilled water, it forms a green-colored solution. The hexahydrate form of nickel(II) sulfate has a characteristic green color due to the presence of the hydrated nickel(II) ions.

When ammonia (NH3) solution is added to the nickel(II) sulfate solution, several observable color and appearance changes may occur:

Formation of a Precipitate: The addition of ammonia can lead to the formation of a greenish-blue precipitate. This precipitate is often referred to as "nickel hydroxide" or "nickel(II) hydroxide" [Ni(OH)2]. It has a pale greenish-blue color and may appear as a solid precipitate suspended in the solution.

Color Change in the Solution: The addition of ammonia can cause the original green solution to turn into a pale greenish-blue color. This color change is due to the formation of the nickel hydroxide precipitate.

Formation of a Turbid Solution: Depending on the concentration of ammonia added and the amount of nickel(II) present, the solution may become turbid or cloudy due to the presence of the suspended nickel hydroxide precipitate. This turbidity can be observed as a loss of transparency in the solution.

Overall, the initial green-colored solution of NISO4·6H2O turns into a pale greenish-blue solution with the formation of a nickel hydroxide precipitate when ammonia is added. The color and appearance changes serve as visual indicators of the chemical reactions and the formation of new compounds in the solution.

Learn more about visual indicators here, https://brainly.com/question/30038798

#SPJ11

The gas phase decomposition of ethyl chloroformate (ClCOOC2H5C2H5Cl) produces carbon dioxide (CO2). The given information states that the rate constant at k is /s and the rate constant at k is /s. Additionally, the activation energy for the gas phase decomposition of ethyl chloroformate is given as kj/mol.

To further explain, the rate constant (k) is a measure of how quickly a reaction occurs. It represents the proportionality constant between the concentration of the reactants and the rate of the reaction.

In this case, the decomposition of ethyl chloroformate is a chemical reaction in which it breaks down into carbon dioxide. The rate constant (k) provides information about the speed at which this decomposition occurs.

The rate constant at k is /s indicates the rate of the decomposition reaction when the reactants are at a certain temperature and pressure. Similarly, the rate constant at k is /s represents the rate of the reaction at a different temperature and pressure.

The activation energy (Ea) is the minimum energy required for a reaction to occur. In the given information, it is specified as kj/mol. This means that in order for the decomposition of ethyl chloroformate to take place, a minimum energy of kj/mol must be provided.

It is important to note that the activation energy affects the rate constant. As the activation energy increases, the rate constant decreases, resulting in a slower reaction. Conversely, when the activation energy decreases, the rate constant increases, leading to a faster reaction.

In summary, the given information provides the rate constants (k) for the decomposition of ethyl chloroformate at different conditions, as well as the activation energy (Ea) required for the reaction to occur. The rate constant reflects the speed of the reaction, while the activation energy represents the minimum energy needed for the reaction to take place.

Learn more about rate constant  in the link:

https://brainly.com/question/26127112

#SPJ11

The ground-state electronic configuration of sulfur can be represented using an atomic orbital diagram. In this diagram, each electron in sulfur's atomic structure is placed in its corresponding orbital.

Sulfur has 16 electrons, which occupy the following orbitals in its ground state:

1s2 2s2 2p6 3s2 3p4

Here, the "1s2" and "2s2" orbitals are fully filled with 2 electrons each. The "2p6" orbital is also completely filled, with 6 electrons distributed among its 3 sub-orbitals (2px, 2py, 2pz). The remaining 2 electrons are located in the "3s2" orbital, while the last 4 electrons fill the "3p" sub-shell, with each of the three 3p orbitals holding one electron and the fourth electron filling a 3px orbital.

So, the completed atomic orbital diagram for sulfur's ground-state electronic configuration would show two electrons in the 1s orbital, two electrons in the 2s orbital, six electrons in the 2p sub-shell (two electrons in each of the three 2p orbitals), two electrons in the 3s orbital, and four electrons in the 3p sub-shell (one electron in each of the 3px, 3py, and 3pz orbitals, and one additional electron in one of these orbitals).

Learn more about electronic configuration here: brainly.com/question/31812229

#SPJ11

Ethanol.

Formula: C2H5OH

Molar mass: 46.07 g/mol

Density: 789 kg/m³