Complete this Lewis structure for S2O32− by adding lone pairs and formal charges.
Add lone-pair electrons and formal charges to this structure.

Answer:

zRNA

Explanation:

RNA is a nucleic acid responsible for the synthesis of proteins, since it is the molecule that carries the information contained in DNA for the biological process called transcription.

There are three types of RNA, the mRNA, the tRNA and the rRNA. There is no RNA called a zRNA, however, existing RNAs have different functions. These functions are listed below:

The mRNA is called messenger RNA and is the RNA responsible for containing the DNA information that will be translated into proteins created during protein synthesis.

The tRNA is responsible for identifying the information presented by the mRNA, creating amino acids from it and transporting those amino acids in the right order to form proteins.

rRNA is also called ribosomal RNA and is responsible for creating ribosomes, which are the organelles where protein synthesis will take place.

Answer:

Second option. 3

Explanation:

In order to balance a equation you need to have the same amount of atoms/moles in both sides.

Na₃PO₄  +  _ HCl  →  3NaCl  + H₃PO₄

In reactant side we have 3 Na and we have the same amount in product side.

We also have 1 P and 4 O in both sides of the equation.

As we have 3 moles of NaCl in product side, this means we have:

NaCl →  Na⁺  +  Cl⁻

3 moles of Na⁺ and 3 moles of Cl⁻. In conclussion we need 3 moles of Cl⁻ in reactant side.Then, the stoichiometry of HCl must be, 3.

3 moles of HCl means that we have 3 moles of protons (H⁺).

HCl  → H⁺  +  Cl⁻

If you see the phosphoric acid, we also have 3 moles of protons.

H₃PO₄ →  3H⁺  +  PO₄³⁻

Complete balanced equation is:

Na₃PO₄  +  3HCl  →  3NaCl  + H₃PO₄

When a molecule undergoes phase transition from gas to liquid, it means that there is an increase in the attractive force.

The matter which is present around us exists in three major states which are solids, liquids and gases. The attractive forces that are present between the particles of matter are known as the intermolecular forces and they change with the change or transition in state of matter.

The particles of solids have the highest intermolecular force followed by liquids and then followed by gas. When a particular gas changes into the liquid state, the attractive forces between its particles increases.

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Human population growth will Double time and that will be 41.17 years

Human growth can be defined as;

The growth and development are positively influenced by factors, like parental health and genetic composition.

Population growth is the increase in the number of humans on Earth.

Human population has grown exponentially over the past century. It has done so largely by producing large amounts of food, and learning how to control disease.

We can find what year the human population would double using the rule of 70. This is given as;

Double time = 70 / rate(r)

Double time = ?

Rate = 1.7%

Inserting into the equation;

Double time = 70 / 1.7

Double time =41.17 years

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Answer:

The last one is true.

The order of increasing radius is:  Na+ < Rb+ < Br-

The radius of an atom or ion is a measure of the size of the atomic nucleus and the electron cloud that surrounds it. The radius of an atom or ion can be affected by various factors such as the number of protons, neutrons and electrons it has, as well as the electron configuration. In general, as we move from left to right across the periodic table, atomic radius tends to increase.

In the case of the three ions you provided, Br-, Na+ and Rb+ , the order of increasing radius is as follows:

Na+ has the smallest atomic radius among the three, as it has lost one electron and become a positive ion, the removal of the electron increases the effective nuclear charge, making the electron cloud more tightly held.

Rb+ has a slightly larger atomic radius than Na+ as it has one more electron and one more proton in its nucleus than Na+, making the electron cloud slightly less tightly held.

Br- has the largest atomic radius among the three as it has gained an electron and become a negative ion, the addition of the electron decreases the effective nuclear charge, making the electron cloud less tightly held.

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Lithium has a valence of 1, so it will not usually reach an octet in a bond. It tends to form ionic bonds, in which there is only one electron transfer, rather than two or more which would be required to reach an octet.

Lithium is a soft, silver-white metal that is the lightest of all alkali metals. It is a key component in many batteries, and is also used in a variety of other applications. It has a low reactivity, and is relatively stable when exposed to air and water. In its elemental form, Lithium is a highly flammable, corrosive metal that is rarely found in its pure form in nature. It can be found in minerals such as lepidolite and spodumene, and is commonly mined from salt flats and brine pools.

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As a result of photosynthesis the level of CO₂ decrease and the the level of o2 increase in the environment.

Photosynthesis is a chemical process that occurs in algae, plants and some types of bacteria, when they are exposed to the sunlight. During photosynthesis, water and carbon dioxide will combine to form carbohydrates and gives off oxygen.

During photosynthesis, plants take carbon dioxide from the air. Within the plant cell carbon dioxide is reduced, meaning it gains electrons. This transforms the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.

Photosynthesis increases the content of the non-structural carbohydrates in the leaves which can lead to grater starch reserves and increased auxin biosynthesis.

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Efficiency and safety are important criteria for the design of ammonia production processes, as they consume less energy and reliably produce large amounts of ammonia with minimal risk of accidents.

Design criteria are specific characteristics or requirements that a design must meet in order to be successful. They provide clear and measurable criteria for evaluating designs, ensuring that the final product meets the needs and expectations of customers or users. Design criteria include not only technical specifications such as size, weight and materials, but also performance requirements such as safety, efficiency and durability. It can also include cost-related criteria such as manufacturing cost, ease of maintenance, and environmental aspects. The process of identifying and defining design criteria is an important step in the design process as it helps ensure that the final product meets user needs and is fit for purpose. This is important because as much of the reactants (nitrogen and hydrogen) as possible are converted to ammonia, thereby maximizing the yield of the process. This is important to make the process economical and produce large amounts of ammonia.

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Answer:

Notice that you have a 1:3. mole ratio between nitrogen gas and hydrogen gas. This means that, regardless of how many moles of nitrogen gas you have, the reaction will always consume twice as many moles of hydrogen gas.

Explanation:

The required moles of oxygen is 10.0 mol of [tex]O_2[/tex] (Oxygen) is required to roast 10.0 mol of CuS (copper(I) sulfide).

Because the Sulphur absorbs the impurities as fumes and reacts with the remaining ore to produce Copper metal by auto-reduction, the ore is partially roasted.

[tex]Cu_2S.Fe_2S_3+O_2→Cu_2S+2FeS+SO_2[/tex]

[tex]Cu_2S+3O_2→Cu_2O+2SO_2[/tex]

Sulfide ore is heated by a heat source in the presence of air during the roasting process. The ore or ore concentrate is treated with very well-liked air during roasting. This method is frequently used when processing sulfide ores. The sulfide that is present during roasting is changed into oxide and emitted as sulfur dioxide, a gas.

Roasting's primary purposes are to eliminate volatile impurities and oxidize the ore by turning it into oxide.

A significant copper resource is COPPER-PYRITES, often known as chalcopyrite, which is a copper iron sulfide (CuFeS2).

To roast 10.0 mol of copper(I) sulfide (CuS), the balanced equation is CuS + O2 → CuO + SO2.

For every mole of CuS that reacts, one mole of O2 is consumed. Therefore, 10.0 mol of [tex]O_2[/tex] is required to roast 10.0 mol of CuS.

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Given :

0.26 mole of [tex]K_3PO_4[/tex] and 0.35 L of water.

To Find :

The molarity of a solution of [tex]K_3PO_4[/tex] made by mixing 0.26 mole of potassium

phosphate with water up to 0.35 L .

Solution :

We know, molarity is given by :

[tex]M = \dfrac{number \ of \ moles }{Volume \ in \ Liter}\\\\M = \dfrac{0.26}{0.35}\ M\\\\M = 0.743 \ M[/tex]

Therefore, the molarity of [tex]K_3PO_4[/tex] solution is 0.743 M.

Answer:

0.693 (you can round it up if you want to)

Explanation:

Density= mass ÷ volume

54.2 ÷ 78.1 = 0.693

I hope this helped☺

To solve this we must be knowing each and every concept related to mutation and types of mutations. Therefore, the correct option is option C.

A mutation is, at its most basic, a change or alteration. Chromosome and gene alterations, known as mutations in biology, frequently appear physically.

One grizzly bear population has moved to an area that has snow year-round. If a mutation for coat color is going to spread through the population then Grizzly bears that have a lighter fur mutation can catch prey more easily and so have more resources to have more offspring. Due to this, the trait starts to spread through the population.

Therefore, the correct option is option C.

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1.08 moles of water () produced by the reaction of 0.90mol of oxygen.

Explanation:

Moles of oxygen given = 0.90 mole

Moles of water are to be calculated.

Step 1 : Write the chemical reaction and balance it.

5 mole of  reacts with 4 mole of  to give 4 moles of NO and 6 moles of .

Step 2 : Calculate moles of water () utilising  mole ratio.

The coefficient of  is 6 and coefficient of  is 5, So mole ratio of  to  is 6 : 5

Moles of  = 0.90 × 6 (moles of ) ÷ 5 (moles of )

Moles of  = 1.08 moles

1.08 moles of  is produced by the reaction of 0.90 mole oxygen ()

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Answer:

Student C.

Explanation:

At higher temperatures, the particles move faster and collide with each other more frequently, which causes the gas to occupy a larger volume. At lower temperatures, the particles move slower and collide less frequently, which causes the gas to occupy a smaller volume.

When the balloon is placed in the freezer, the temperature inside the balloon will also decrease, causing the gas particles to slow down and collide less frequently, which leads to a decrease in the volume of the gas, hence the balloon will shrink or contract. On the other hand, the room temperature balloon will experience no significant change in the temperature and the gas particles inside the balloon will remain at the same level of activity, causing the balloon to retain the same volume.

The orbital configuration of following elements is as follows: i) helium- 1 s² ii)nitrogen- 1 s² 2 s²  2 p³ iii)silicon-1 s² 2 s² 2 p⁶ 3 s² 3 p²

It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number. All atoms with same atomic number are atoms of same element.

Here,

The orbital configuration of following elements is as follows: i) helium- 1 s² ii)nitrogen- 1 s² 2 s²  2 p³ iii)silicon-1 s² 2 s² 2 p⁶ 3 s² 3 p²

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Answer:

0.0203M

Explanation:

We'll use the integrated rate law for second order reactions:

1/[A]=1/[A]initial+kt

[A]initial=0.5M

k=0.1/s

t=200°C but we need in Kelvins

t=200 +273.15K=473.15K

1/[A]=1/[0.5]+[0.1 x 473.15]

1/[A]=49.315M

[A]~0.0203M

Hope it helps:)

Answer:

20

Explanation:

17 proton and 20 neutrons

Answer: #Neutrons= 20

Explanation: Cl with 37 mass number has the atomic number of 17.

Solution:

mass number = Protons + Neutrons

But # Protons = 17

Therefore, N= A-P= 37-17= 20 neutrons

Answer:

3.08 grams

Explanation:

Answer:3.08 grams

Explanation:

faxxxsss

Answer:

A negative chlorine

Explanation:

B and D r wrong coz positive doesn't attract positive.

for C , sodium doesn't have a negative valency.

A carbonyl group is bound to hydrogen bond or to a hydrogen ion and an alkoxy substituent in an organic compound known as an aldehyde.

Aldehyde is an organic compound containing a functional group with the structure −CHO, in which a carbon atom is double-bonded to an oxygen atom and single-bonded to a hydrogen atom. Aldehydes are the simplest type of carbonyl group and the most common type of organic compound. Aldehydes are found in many natural and manufactured products, including perfumes and food products. The most common example of a natural aldehyde is formaldehyde, which is produced by plants and animals.

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Answer:

Na, Cu, and Br will form positive ions

Explanation:

Na, Cu, and Br have more protons than electrons, so they will form positive ions.

Na, Cu, and Br are all elements that have an atomic number greater than their number of electrons. This means that they have more protons than electrons, so they will form positive ions when they react with other elements. Na will form Na+, Cu will form Cu+ and Br will form Br+.

Answer:

[tex]E=1.989*10^{-32}J[/tex]

Explanation:

From the question we are told that:

Frequency [tex]f=3 * 10 Hz[/tex]

Generally the equation for Energy of an electromagnetic wave is mathematically given by

 [tex]E=hf[/tex]

Where

  h=Planck's constant

  [tex]h=6.62607015 * 10^{-34}[/tex]

Therefore

 [tex]E=6.62607015 * 10^{-34}*3 * 10[/tex]

 [tex]E=1.989*10^{-32}J[/tex]

The number of moles of oxygen a worm absorbs per hour can be calculated using the formula:

A = (LR^2dO2) / (MT)

Where A is the molar flow rate of oxygen, L is the length of the worm, R is the radius of the worm, d is the density of the worm, O2 is the concentration of oxygen in the environment, M is the molar mass of oxygen, and T is the time in hours.

The number of moles of oxygen the worm uses per hour can be calculated using the formula:

B = (k*A)

Where B is the molar flow rate of oxygen used by the worm and k is the rate constant for oxygen consumption.

To determine whether the worm is taking in oxygen at a rate fast enough to survive, we would need to compare the rate of oxygen absorption (A) to the rate of oxygen consumption (B). If A > B, then the worm is absorbing oxygen at a rate that is greater than or equal to the rate at which it is consuming oxygen, and it should be able to survive. If A < B, then the worm is not absorbing oxygen fast enough to sustain its metabolism and it may not survive.

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The chemical equation for this reaction is best written as: Na (s) + Cl2 (g) → NaCl (s) + Heat

Reaction is a process in which one or more substances are changed into one or more different substances. It is a chemical or physical change that occurs in response to a stimulus. Reactions can be used to create new materials or to break down existing materials into simpler components. They can also be used to generate energy or to store energy. Reactions can be either spontaneous or non-spontaneous, depending on the conditions in which they occur.

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