a gas mixture containing no2, co2 and so2 occupies 50.0 l at 1.75 atm and 325 k. if there are 37.7 g of no2 in the mixture, what is the mole fraction of no2 and the partial pressure of no2 in this mixture?

The drugs that appear to produce therapeutic effects by blocking receptor sites for dopamine to reduce symptoms associated with schizophrenia are called dopamine receptor antagonists, also known as antipsychotic medications or neuroleptics.

How do these drugs work?

These drugs work by binding to dopamine receptors in the brain and blocking the action of dopamine, a neurotransmitter that is believed to be involved in the development of schizophrenia. By reducing the activity of dopamine in certain regions of the brain, these drugs help to alleviate the positive symptoms of schizophrenia, such as hallucinations, delusions, and disorganized thinking.

Examples of commonly used dopamine receptor antagonists include typical antipsychotics such as haloperidol and chlorpromazine, as well as atypical antipsychotics such as risperidone, olanzapine, and quetiapine. These medications have different affinities for specific dopamine receptor subtypes and may also affect other neurotransmitter systems, contributing to their therapeutic effects.

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Answer:

22 students

Explanation:

i just answered it for a quiz and its correct

Recycling of iron from erythrocytes is made possible by transferrin. The correct option is, therefore, a.

Transferrin is a protein that binds to iron and is found in the blood plasma. It is responsible for transporting iron from the small intestine, where it is absorbed, to the liver and other tissues, including the bone marrow and spleen, where it is used to produce hemoglobin for red blood cells.

When red blood cells reach the end of their lifespan, they are broken down in the spleen and liver, and the iron released is bound to transferrin for transport back to the bone marrow for reuse in the production of new red blood cells.

Hence, the correct option is a.

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The correct temperature for mixing barium sulfate with water for a barium enema is typically around 100°F or 37.7°C. The correct option is d. 100°F.

This temperature ensures that the mixture is comfortable for the patient during the procedure. It is important to follow the instructions provided by the healthcare professional or the manufacturer's guidelines for preparing the mixture.

The correct temperature helps in achieving a smooth consistency and facilitates the easy flow of the barium sulfate mixture during the enema.

It is worth noting that healthcare providers may have slight variations in their specific instructions, so it is always best to consult with them for the most accurate information regarding the temperature and preparation of a barium enema.

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For standard 1, the volume of stock solution required is 2.00 mL, while for standard 2, it is 4.00 mL.

In order to calculate the volume of 0.0315 m Bromocresol green (HBCG) standard stock solution required to make 10.00 ml of the three standards, we need to use the formula:

M1V1 = M2V2

Where M1 is the concentration of the stock solution,

V1 is the volume of the stock solution required,

M2 is the concentration of the final solution, and

V2 is the final volume of the solution.

To calculate the volume of 0.0315 m Bromocresol green (HBCG) stock solution required to make 10.00 ml of 0.00630 m Bromocresol green (HBCG) standard 1, we can plug in the values into the formula as:

M1V1 = M2V2V1 = (M2V2)/M1= (0.00630 mol/L x 0.01000 L)/0.0315 mol/L= 0.00200 L = 2.00 mL

Therefore, the volume of 0.0315 m Bromocresol green (HBCG) stock solution required to make 10.00 ml of 0.00630 m Bromocresol green (HBCG) standard 1 is 2.00 mL.

To calculate the volume of 0.0315 m Bromocresol green (HBCG) stock solution required to make 10.00 ml of 0.0126 m Bromocresol green (HBCG) standard 2, we can use the same formula as above:

M1V1 = M2V2V1 = (M2V2)/M1= (0.0126 mol/L x 0.01000 L)/0.0315 mol/L= 0.00400 L = 4.00 mL

Therefore, the volume of 0.0315 m Bromocresol green (HBCG) stock solution required to make 10.00 ml of 0.0126 m Bromocresol green (HBCG) standard 2 is 4.00 mL.

In conclusion, we can use the formula M1V1 = M2V2 to calculate the volume of 0.0315 m Bromocresol green (HBCG) stock solution required to make different standards.

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Out of the answer choices, rubidium has the highest energy valence shell. With a single electron in the fifth energy level, krypton will have the highest number of energy levels of the group I elements listed.

kasama na po jan ang explenation

Answer:

split the reaction in to respective ions to ge the ionic equation of this reaction

Explanation:

2 Al + 2Fe+3  O3^-2 ---> 2Al+3 O3^-2  + 2Fe

ins simple it would be

Al   + Fe+3     ----> Al+3   + Fe

Answer:

30 moles of CO₂

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

Al₂(CO₃)₃ —> Al₂O₃ + 3CO₂

From the balanced equation above,

1 mole of Al₂(CO₃)₃ decomposed to produce 3 moles of CO₂.

Finally, we shall determine the number of mole of CO₂ produced from the decomposition of 10 moles of Al₂(CO₃)₃. This can be obtained as follow:

From the balanced equation above,

1 mole of Al₂(CO₃)₃ decomposed to produce 3 moles of CO₂.

Therefore, 10 moles of Al₂(CO₃)₃ will decompose to produce = 3 × 10 = 30 moles of CO₂.

Thus, 30 moles of CO₂ were obtained from the reaction.

30 moles of CO₂ will be produced by the decomposition of 10 moles of  \(\rm Al_2(CO_3)_3\).

Carbon dioxide is a gas made up of two elements, carbon, and oxygen.

It is the gas that is used by plants to make their food.

The % of this gas on Earth is 0.03%

The balanced equation is

\(\rm Al_2(CO_3)_3 \longrightarrow Al_2O_3 + 3CO_2\)

1 mole of \(\rm Al_2(CO_3)_3\) decomposes to produce 3 moles of CO₂.

If 1 mole of \(\rm Al_2(CO_3)_3\) produce 3 moles of CO₂, then decomposition of 10 moles of \(\rm Al_2(CO_3)_3\) will produce

3 × 10 = 30 moles of CO₂.

Thus, 30 moles of CO₂ will be produced by the decomposition of 10 moles of  \(\rm Al_2(CO_3)_3\).

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Answer:

open system

Explanation:

it needs to loose mass not gain mass

Answer:

File down there

Explanation:

Answer:

2

Explanation:

The atom shown in the image has 2 core electrons.

Electrons are the negatively charged particles within an atom. Therefore the total number of electrons surrounding the nucleus in the given specie is 7.

 So;

   We have 2 core electrons

   And 5 valence electrons

The core electrons are the inner orbital electrons.

The valence electrons are the outermost electrons.

Answer:

there'd be 2 electrons

Explanation:

number of electrons= number of protons

24 ml of HCl is produced. when propane is react with chlorine it forms 24 ml of HCl.

Propane, also referred to as liquefied petroleum gas, or LPG, is a gas that is typically compressed and kept in liquid form. It is virtually odorless, harmless, and colorless; an identifying odor is added to make it detectable.

Although propane is frequently used for space and water heating, cooking, and as fuel for engines found in fleet cars, buses, forklifts, and farm irrigation engines, its usage are expanding quickly as a result of new technological advancements.

Propane is referred to as propane autogas when it is utilized as a car fuel.

Therefore, 24 ml of HCl is produced. when propane is react with chlorine it forms 24 ml of HCl.

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The mass of HI should be present in 0.200l of solution to obtain a solution with pH value's,

(a) pH value is 1.20 the mass is 1.08g

(b) pH value is 1.75 the mass is 0.0066g

(c) pH value is 2.85 the mass is 0.00012g

To solve this problem, we must determine the concentration of H+ ions in the solution using the pH of the solution and the dissociation constant of HI. The concentration of HI and the mass of HI required to make the solution may then be calculated.

The dissociation reaction for HI is:

HI(aq) ↔ H+(aq) + I-(aq)

The dissociation constant, Ka, for this reaction, is:

Ka = [H+][I-]/[HI]

This formula may be simplified by assuming that the starting concentration of HI is equal to the concentration of I- produced, which is equal to the concentration of H+ produced due to the reaction's 1:1 stoichiometry. This results in:

Ka = [H+]^2/[HI]

Solving for [H+], we get:

[H+] = sqrt(Ka*[HI])

Taking the negative log of both sides gives us the pH of the solution:

pH = -log[H+] = -log(sqrt(Ka*[HI]))

pH= -0.5*log(Ka) - 0.5*log([HI])

Rearranging this equation, we get:

[HI] = 10^(-(pH + 0.5*log(Ka)))/V

where V is the volume of the solution.

Now we can calculate the mass of HI required for each pH:

(a) For pH = 1.20:

Ka for HI is 1.3 x 10^-10. Substituting this value into the equation above, we get:

[HI] = 10^(-(1.20 + 0.5*log(1.3 x 10^-10)))/0.200L ≈ 0.0042 M

The mass of HI required is:

mass = concentration x volume x molar mass

     = 0.0042 mol/L x 0.200 L x 127.91 g/mol

     ≈ 1.08 g

Therefore, approximately 1.08 grams of HI is required to prepare a solution with a pH of 1.20.

(b) For pH = 1.75:

[HI] = 10^(-(1.75 + 0.5*log(1.3 x 10^-10)))/0.200L ≈ 0.00026 M

mass = 0.00026 mol/L x 0.200 L x 127.91 g/mol ≈ 0.0066 g

Therefore, approximately 0.0066 grams of HI is required to prepare a solution with a pH of 1.75.

(c) For pH = 2.85:

[HI] = 10^(-(2.85 + 0.5*log(1.3 x 10^-10)))/0.200L ≈ 0.0000047 M

mass = 0.0000047 mol/L x 0.200 L x 127.91 g/mol ≈ 0.00012 g

Therefore, approximately 0.00012 grams of HI is required to prepare a solution with a pH of 2.85.

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Giant molecules are also referred to as macromolecules and polymers when numerous molecules are combined. These atoms are arranged in a three-dimensional structure and are joined by covalent bonds.

A giant molecule, also known as a macromolecule, is a usually large molecule crucial to biophysical processes, such as a protein or nucleic acid. It is made up of many atoms that are covalently bound. Large non-polymeric molecules including lipids and macrocycles, as well as biopolymers, are the most prevalent macromolecules in biochemistry. In addition to synthetic fibers, giant molecules can also be found in research materials like carbon nanotubes.

Different experts use different terminology for giant molecules. For instance, in biology, giant molecules refer to the four immense molecules that make up living things, while in chemistry, it refers to aggregates of two or more molecules that are held together by intermolecular forces rather than covalent bonds yet that is difficult to dissolve apart. The term giant molecule is frequently referred to as high polymer in British English.

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In this reaction, the water is considered a base.

When ammonia molecules react with water, they form a solution that contains ammonium ions and hydroxide ion.

In this reaction, water will act as a base.This is because it is accepting hydrogen ions from the ammonia molecules and reacting with them to form a solution that contains both ammonium and hydroxide ions.

This is an example of a neutralization reaction, where an acid and a base react to form a neutral solution.

The water is classified as a reactant, as it is consumed and converted into the product solution.

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Two is the total number of elements in group 17 that are gases at room temperature: fluorine and chlorine.

The chemical elements that make up group 17 of the periodic table are called halogens, which in the Greek language means salt former.

This group is made up of:

These elements are shown to have strong binding energy with other atoms but weak interactions with the diatomic fluorine molecule, which means that as one moves down the periodic table the element's reactivity decreases with increasing atom size.

The same happens with intermolecular binding energy, so fluorine and chlorine are the only elements in this group that are stable gases at room temperature.

Iodine is solid at room temperature, like bromine, but as soon as it gets slightly warm it melts and immediately evaporates into a thick, dense vapor, while astatine and tenesus are stable solids at room temperature.

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Answer:

most likely water

Explanation:

most likely it is water, however pressure plays a role, if you are at sea level the boiling point of water is 100°C but if you are on Mt. Everest it is 71°C, assuming she is slightly above sea level it is water.

A lizard basking in the morning sun is an example of behavior known as thermoregulation. Thermoregulation is a behavior that allows animals to control their body temperature by adjusting to the surrounding environment.

A lizard basking in the morning sun is an example of this behavior, as it is a common way for reptiles to regulate their temperature. By absorbing heat from the sun, the lizard can increase its body temperature to an optimal level that is necessary for its metabolic processes to function properly. This helps the lizard maintain its energy levels and overall health, and is crucial for survival in a changing and unpredictable environment. Thermoregulation is an important adaptation that has evolved in many species to help them cope with variations in temperature, and is essential for their survival.

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The solutions which can be separated  using distillation are that of alcohol, salt and sugar with water.

It is defined as a process by which components are separated from a mixture which is liquid  by selective boiling and condensation. Dry distillation is a process of heating solids to produce products in gaseous state.

Distillation results in complete  separation of components  or may be sometimes partial.Due to partial separation,concentration of selected components increases in the mixture. It exploits  differences in  relative volatility  of components of a mixture.

It has many applications like distillation of fermented products which produces distilled beverages , in desalination and in petroleum and oil industry.

It is mainly conversion of liquid into vapor state ,which is subsequently converted back to liquid . It is used to separate volatile liquid from solids and also volatile liquids and non-volatile liquid .

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Answer:

3.53 g

Explanation:

To convert from atoms to moles, you need to know Avogadro's number.  Avogadro's number (6.022 × 10²³) is how many atoms there are in one mole of a substance.  Use this to convert.

(1.97 × 10²² atoms) ÷ (6.022 × 10²³ atoms/mol) = 0.0327 mol

Now that you have moles, use the molar mass to convert to grams.

(0.0327 mol) × (107.87 g/mol) = 3.53 g

The mass in grams of the sample of Ag to three significant figures is 3.53 grams

The formula for calculating the number of moles of a substance is expressed as shown below:

\(moles =\frac{Mass}{Molar mass}\)

Given the following parameters

Molar mass = 107.87 g/mol.

number of atoms of the sample = 1.97 x 1022 atoms.

Get the number of moles of the substance:

Moles = 1.97 × 10²²/6.022 × 10²³ = 0.0327 mol

Get the required mass of the substance:

Mass = moles * molar mass

Mass = 0.0327 * 107.87

Mass = 3.53 grams

Hence the mass in grams of the sample of Ag to three significant figures is 3.53 grams

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Answer:

Explanation: When the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth. When Earth passes directly between Sun and Moon, its shadow creates a lunar eclipse. Lunar eclipses can only happen when the Moon is opposite the Sun in the sky, a monthly occurrence we know as a full Moon. Hope this helps and u have a good day <3

Answer:

134.5 g

Explanation:

Let us recall that 1g of water = 1cm3 of water

Hence;

1,640 g of water =  1,640 cm3 of water or 1.64 L

This is now the volume of the solution

Now;

m/M = CV

m = mass of the solute

M = molar mass of the solute

C = concentration of the solution

V = volume of the solution

m/84.9947 g/mol = 0.965 M *  1.64 L

m = 0.965 M *  1.64 L * 84.9947 g/mol

m = 134.5 g

Answer:

B) 45.1

Explanation:

I'm not entirely sure, but I hope it's right. Cheers!

Oxidation half equation; 2Fe^2+ ----> 2Fe^3+ + 6e

Reduction half equation; 3Cu^2+  + 6e ---->3Cu

An oxidation-reduction (redox) reaction is a type of chemical reaction that involves the transfer of electrons between two species. Oxidation refers to the loss of electrons by a substance, while reduction refers to the gain of electrons by a substance.

Redox reactions are important in many chemical and biological processes, such as cellular respiration, photosynthesis, corrosion, and combustion. They can also be used in industrial processes, such as electroplating, battery operation, and chemical synthesis.

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Answer:  D- average change in plant height, divided by, the number of days.

(i had to look up the test you were talking about to find what the answer choices were.)

Hope this helps!

Number of grams of KCl = 298.2 g.

To calculate the number of grams of KCl produced from 4 mol of KOH in the balanced reaction, the following steps should be followed:

Step 1: Write the balanced chemical equation. The balanced equation is MgCl2 + 2KOH → Mg(OH)2 + 2KCl.

Step 2: Identify the mole ratio of the reactant and product. In the balanced equation, 2 moles of KOH react with 2 moles of KCl.

Step 3: Calculate the number of moles of KCl produced from 4 moles of KOH. We know that the mole ratio of KOH and KCl is 2:2.

Therefore, we can calculate the number of moles of KCl produced by using the following formula:

Number of moles of KCl = (Number of moles of KOH × Mole ratio of KCl and KOH) / Mole ratio of KOH and KClNumber of moles of KCl = (4 × 2) / 2 = 4

Step 4: Convert the number of moles of KCl produced into grams. The molar mass of KCl is 74.55 g/mol.

Number of grams of KCl = Number of moles of KCl × Molar mass of KClNumber of grams of KCl = 4 × 74.55 = 298.2 g.

Therefore, the equation that shows how to calculate how many grams of KCl would be produced from 4 mol of KOH is:Number of grams of KCl = Number of moles of KCl × Molar mass of KCl.Number of grams of KCl = 4 × 74.55 = 298.2 g.

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