For resonance forms of a molecule or ion, ________.

The atom 'x' has valency 3 based on xCl3 formula. The carbonate ion has a charge of -2. Hence, to balance the charges, the formula for 'x' carbonate should be X2(CO3)3.

The hypothetical atom is represented as 'x'. The formula provided, xCl3, indicates that there are three chloride ions for every atom of 'x'. This suggests that the valency of 'x' is 3. Assuming that 'x' is a metal, when it forms a carbonate, it will combine with the carbonate ion (CO3) which has a charge of -2.

As 'x' has a valency of 3 and carbonate has a charge of -2, to balance the charges the formula for 'x' carbonate would be X2(CO3)3. This formula implies there are two atoms of 'x' for every three carbonate ions in the compound. Therefore, the molecular formula for 'x' carbonate is X2(CO3)3.

https://brainly.com/question/35282824

#SPJ12

Ans: B) Time

Rate is a measure of change of a particular property over a certain time period. The property could be concentration, volume, mass etc.

Mathematically, if x denotes a certain property and t denotes the time then:

Rate = Δx/Δt = x2-x1/t2-t1

x1 and x2 are the initial and final values of the measured property measured at time t1 and t2 respectively.

Thus, rate is related to time.

2HI(aq)+Ba(OH)2(aq) ----> 2H2O(l) + BaI2(aq)

Peroxisomes, an organelle found in both animal and plant cells, produce hydrogen peroxide (H2O2) as a by-product during detoxification and metabolic processes. They also safely break down H2O2 into water and oxygen, shielding the rest of the cell from this compound's potential toxicity.

The organelle that produces H2O2 (hydrogen peroxide) as a by-product is the peroxisome. Peroxisomes are small, round organelles enclosed by single membranes. They perform oxidation reactions that break down fatty acids and amino acids, and also detoxify many poisons that may enter the body. During these oxidation reactions, they release H2O2, which can damage cells. However, these reactions are confined to peroxisomes, where enzymes safely break down the H2O2 into oxygen and water. This makes peroxisomes crucial for neutralizing harmful toxins in cells.

For example, alcohol is detoxified by peroxisomes in liver cells. Glyoxysomes, which are specialized peroxisomes in plants, play a role in converting stored fats into sugars. Therefore, peroxisomes fulfill numerous crucial roles in both animal and plant cells which includes producing and then safely breaking down H2O2.

https://brainly.com/question/33017243

#SPJ11

The peroxisome is the organelle that produces H2O2 as a by-product during oxidation reactions and detoxification processes, but contains enzymes to convert it into harmless substances.

The organelle in question that produces hydrogen peroxide (H2O2) as a by-product is the peroxisome. Peroxisomes perform a variety of metabolic processes, primarily oxidizing fatty acids and detoxifying harmful substances. The toxic by-product of these reactions is H2O2, which peroxisomes contain within themselves to prevent cellular damage. Enzymes such as catalase within peroxisomes convert H2O2 into water and oxygen, mitigating the potentially harmful effects of hydrogen peroxide on the cell.

Explanation:

When we increase temperature of a substance then bond between the atoms will start to break and the molecules will move apart from each other. As a result, there will be increase in number of collisions between the molecules. Thus, reaction will occur at a faster rate.

Also,   K.E = [tex]\frac{3}{2}kT[/tex]

where          k = boltzmann constant

                    T = temperature

Hence, kinetic energy is proportional to temperature. So, more is the temperature more will be the kinetic energy. Therefore, more will be the rate of reaction.

The pH of solution is calculated using the formula:

pH = - log [H]

where [H] is the concentration of H+ ion in molarity

H+ concentration when pH = 2:

2 = - log [H]

[H] = 0.01 M

H+ concentration when pH = 13:

13 = - log [H]

[H] = 1 x 10^-13 M

The difference is therefore:

0.01 M - 1 x 10^-13 M = 0.01 M

The concentration at pH=13 is so small that it can be considered negligible.

Answer:

The pH of solution is calculated using the formula:

pH = - log [H]

where [H] is the concentration of H+ ion in molarity

H+ concentration when pH = 2:

2 = - log [H]

[H] = 0.01 M

H+ concentration when pH = 13:

13 = - log [H]

[H] = 1 x 10^-13 M

The difference is therefore:

0.01 M - 1 x 10^-13 M = 0.01 M

The concentration at pH=13 is so small that it can be considered negligible.

Explanation:

Answer is: nonmetals.

Nonmetals are far right at Periodic table, except hydrogen (H).

The nonmetals are divided into two categories: reactive nonmetals and noble gases.

The type of bond in nonmetal is covalent bond, there is no free electrons, so they do not conduct heat.

Intermolecular forces are weak, so they have low boiling points.

Nonmetals have low electrical and thermal conductivity .

Element x would most likely be found on the right side of the periodic table, where nonmetals are located.

The periodic table is a tabular arrangement of chemical elements, organized by increasing atomic number and similar chemical properties. Elements are grouped into rows (periods) and columns (groups or families) based on their electron configurations. This table provides a systematic way to understand and study the properties and relationships of all known elements.

Based on the given information, Element x is a nonmetal that is a poor conductor of heat, has a low boiling point, and is a brittle solid at room temperature. Nonmetals are typically found on the right side of the periodic table. Therefore, Element x would most likely be found on the right side of the periodic table, where nonmetals are located.

https://brainly.com/question/35461104

#SPJ6

Did your response contain the following points? You may have discussed additional points that are not listed here.  

Both carbohydrate and fat molecules release energy when cells break them down.

Many carbohydrates contain fiber, which the body cannot break down but which can help the digestive system function.

Sterols are important lipids that cells can convert into compounds the body needs, such as vitamins, some hormones, and bile salts.

Phospholipids are important structural components of cells.

The isotopes which are radioactive in nature is said to be radioisotopes. Radioisotope has  unstable atomic nucleus and to attain a stable form, they emit particles and energy.

Since, radioisotopes are very reactive in nature as they are unstable and hence, they decay to form other particles. Energy may be released in the form of alpha particles (helium nuclei), beta particles, (electrons or positrons), or gamma particles (electromagnetic energy).

Hence, incorrect statement is: radioisotope is stable.

Separate a mixture of sand, salt, and iron filings by first using a magnet to remove the iron filings. Then, add water to dissolve the salt, and decant the salty water, leaving the sand behind. Finally, allow the water to evaporate to retrieve the salt.

To separate a mixture of sand, salt, and iron filings, you would first use a magnet to remove the iron filings from the mixture. This is possible because iron is a magnetic material and will be attracted to the magnet, which allows it to be separated from the non-magnetic substances (sand and salt).

https://brainly.com/question/35865688

#SPJ2

Answer:

65,179.487 g/mol is the molar mass of fungal laccase.

Explanation:

Percentage of copper in Fungal laccase = 0.390

Molar mass of fungal laccase = M

Number of copper atom in 1 fungal laccase molecule = 4

Atomic mass of copper = 63.55 g/mol

Percentage of an element in a compound:

[tex]\frac{\text{Number of atoms of element}\times \text{Atomic mass of element}}{\text{molecular mass of compound}}\times 100[/tex]

Percentage of copper:

[tex]\frac{4\times 63.55 g/mol}{M}\times 100=0.390\%[/tex]

[tex]M=\frac{4\times 63.55 g/mol}{0.390}\times 100[/tex]

M = 65,179.487 g/mol

65,179.487 g/mol is the molar mass of fungal laccase.

Answer:

The right answer is A

Explanation:

Answer : The volume of a piece of metal is [tex]2.01cm^3[/tex]

Explanation :

Density : It is defined as the mass contained per unit volume.

Formula used for density :

[tex]Density=\frac{Mass}{Volume}[/tex]

Given :

Mass of a piece of metal = 9.37 grams

Density of metal = [tex]4.66g/cm^3[/tex]

Now put all the given values in the above formula, we get the volume of a piece of metal.

[tex]4.66g/cm^3=\frac{9.37g}{Volume}[/tex]

[tex]Volume=\frac{9.37g}{4.66g/cm^3}[/tex]

[tex]Volume=2.01cm^3[/tex]

Therefore, the volume of a piece of metal is [tex]2.01cm^3[/tex]

The correct answer is 'a'. In covalent bonds, two atoms share electrons, while in ionic bonds, two atoms of opposite charge are attracted to each other.

In a covalent bond, two atoms share electrons to achieve a stable electron configuration. This sharing of electrons allows both atoms to fill their outermost energy levels and become more stable. An example of a covalent bond is the bond between two hydrogen atoms in a hydrogen molecule . In this case, both hydrogen atoms share their single electron to form a stable molecule.

On the other hand, in an ionic bond, two atoms of opposite charge are attracted to each other due to the transfer of electrons. One atom loses electrons to become positively charged (cation), while the other atom gains electrons to become negatively charged (anion). These oppositely charged ions are then attracted to each other, forming an ionic bond.Thus, the correct option is 'A'.

Learn more about covalent bond,here:

https://brainly.com/question/19382448

#SPJ6

Answer: Bromine has the highest electronegativity in period 4 of the periodic table.

Explanation:

Electronegativity is defined as the tendency of an atom to attract the shared pair of electrons towards itself whenever a bond is formed.

This property of an atom increases as we move from left to right in a period because the number of charge on the nucleus gets increased.

But this property decreases as we move from top to bottom in a group because electrons get add up in the new shells which make them further far away from the nucleus.

For the given options:

Potassium is present in Group 1, Period 4 of the periodic table.

Calcium is present in Group 2, Period 4 of the periodic table.

Copper is present in Group 11, Period 4 of the periodic table.

Bromine is present in Group 17, Period 4 of the periodic table.

Hence, bromine will have the highest electronegativity in Period 4.

Explanation:

The given chemical equation is as follows.

    [tex]H_{2}SO_{4} + NaCN \rightarrow HCN + Na_{2}SO_{4}[/tex]

Number of reactant atoms are as follows.

Number of product atoms are as follows.

Thus, in order to balance the equation, multiply NaCN by 2 on the reactant side and multiply HCN by 2 on the product side. Therefore, the balanced chemical equation will be as follows.

      [tex]H_{2}SO_{4} +2NaCN \rightarrow 2HCN + Na_{2}SO_{4}[/tex]

Hence, we need [tex]2 \times 3.6[/tex]  = 7.2 moles of NaCN to react completely with 3.6 moles of [tex]H_{2}SO_{4}[/tex].

Answer:

the number of solute particles

Explanation:

just aced the exam

Answer: The element which is most likely to form negative ion is fluorine.

Explanation:

An ion is formed when a neutral atom looses or gains electrons.

For the given options:

Aluminium is the 13th element of the periodic table having electronic configuration of [tex]1s^22s^22p^63s^23p^1[/tex]

This element will loose 3 electrons to attain stable electronic configuration and will form [tex]Al^{3+}[/tex] ion

Copper is the 29th element of the periodic table having electronic configuration of [tex]1s^22s^22p^63s^23p^64s^23d^9[/tex]

This element will loose 2 electrons to attain stable electronic configuration and will form [tex]Cu^{2+}[/tex] ion

Sodium is the 11th element of the periodic table having electronic configuration of [tex]1s^22s^22p^63s^1[/tex]

This element will loose 1 electron to attain stable electronic configuration and will form [tex]Na^{+}[/tex] ion

Fluorine is the 9th element of the periodic table having electronic configuration of [tex]1s^22s^22p^5[/tex]

This element will gain 1 electron to attain stable electronic configuration and will form [tex]F^{-}[/tex] ion

Hence, the element which is most likely to form negative ion is fluorine.

The rate of the forward reaction where dinitrogen tetroxide decomposes to nitrogen dioxide starts high and gradually decreases until it levels out above zero, due to reaching a state of dynamic equilibrium.

In the reaction where dinitrogen tetroxide decomposes to produce nitrogen dioxide, the graph of the rate of the forward reaction over time would start high and gradually decrease until it levels out above zero. This is because when the reaction begins, the concentration of reactant (dinitrogen tetroxide in this case) is at its maximum, thus the rate of the forward reaction is high. However, as the reaction progresses and more product (nitrogen dioxide) is generated, the concentration of dinitrogen tetroxide decreases and thus the rate of the forward reaction also decreases. This continues until a dynamic equilibrium is reached where the rate of the forward reaction equals the rate of the reverse reaction and the concentrations of reactant and product are constant.

https://brainly.com/question/32227445

#SPJ6

The rate of the forward reaction in the decomposition of N₂O₄ to NO₂ starts at zero, increases as the reaction proceeds, and levels out above zero once dynamic equilibrium is reached, where it becomes equal to the reverse reaction rate.

When dinitrogen tetroxide (N₂O₄) decomposes to produce nitrogen dioxide (NO₂), we observe the concept of chemical equilibrium in a closed system. Initially, the rate of the forward reaction, which is the decomposition of N₂O₄ to 2NO₂, starts at zero because there is no NO₂ to decompose. As the decomposition proceeds, this rate increases as more N₂O₄ is converted to NO₂. Over time, the forward reaction rate gradually increases and then levels out above zero when dynamic equilibrium is reached. At equilibrium, the rate of the forward reaction becomes equal to the rate of the reverse reaction, which is the dimerization of NO₂ to reform N₂O₄.

To solve this problem, let us first find for the molar mass of Fe2O3 and Fe3O4.

Fe = 55.85 g/mol and O = 16 g/mol

Therefore,

Fe2O3 = 159.7 g/mol

Fe3O4 = 231.55 g/mol

We are given that there are 29 g of Fe2O3, we calculate for the amount of Fe from this in moles:

mol Fe = 29 g Fe2O3 (1 / 159.7 g/mol) (2 mol Fe / 1 mol Fe2O3)

mol Fe = 0.363 mol

Converting this to Fe3O4:

mass Fe3O4 = 0.363 mol Fe (1 mol Fe3O4 / 3 mol Fe) (231.55 g/mol)

mass Fe3O4 = 28.03 g

Therefore there are 28.03g of Fe3O4 in the ore.