A sample of argon has a volume of 1.20 L at STP. If the temperature is increased to 22.0°C and the pressure is lowered to 0.800 atm, what will the new volume be, in L?

Answer:

The stratosphere

Explanation:

Answer:

Hi I ll explain

Explanation:

\(0.4mol \times \frac{22.4liter}{1mol} = 8.96liter\)

Remember

At STP always one mole of every gas equals 22.4 liter

After the reaction is complete, no nitrogen and no hydrogen molecules remain, and 8.00 x 1014 molecules of NH3 are produced.

In the equation, nitrogen and hydrogen react at a high temperature, in the presence of a catalyst, to produce ammonia, according to the balanced chemical equation:N2(g)+3H2(g)⟶2NH3(g)The coefficients of each molecule suggest that one molecule of nitrogen reacts with three molecules of hydrogen to create two molecules of ammonia.

So, to determine how many molecules of ammonia are produced when four nitrogen and nine hydrogen molecules are present, we must first determine which of the two reactants is the limiting reactant.

To find the limiting reactant, the number of moles of each reactant present in the equation must be determined.

Calculations:
Nitrogen (N2) molecules = 4Hence, the number of moles of N2 = 4/6.02 x 1023 mol-1 = 6.64 x 10-24 mol
Hydrogen (H2) molecules = 9Hence, the number of moles of H2 = 9/6.02 x 1023 mol-1 = 1.50 x 10-23 mol

Now we have to calculate the number of moles of NH3 produced when the number of moles of nitrogen and hydrogen are known, i.e., mole ratio of N2 and H2 is 1:3.

The mole ratio of N2 to NH3 is 1:2; thus, for every 1 mole of N2 consumed, 2 moles of NH3 are produced.
The mole ratio of H2 to NH3 is 3:2; thus, for every 3 moles of H2 consumed, 2 moles of NH3 are produced.
From these mole ratios, it can be observed that the limiting reactant is nitrogen.

Calculation for NH3 production:
Nitrogen (N2) moles = 6.64 x 10-24 moles
The mole ratio of N2 to NH3 is 1:2; therefore, moles of NH3 produced is 2 × 6.64 × 10−24 = 1.33 × 10−23 moles.

Now, to determine how many molecules of NH3 are produced, we need to convert moles to molecules.
1 mole = 6.02 x 1023 molecules
Thus, 1.33 x 10-23 moles of NH3 = 8.00 x 1014 molecules of NH3 produced.

To find the amount of each reactant remaining after the reaction is complete, we must first determine how many moles of nitrogen are consumed, then how many moles of hydrogen are consumed, and then subtract these from the initial number of moles of each reactant.

The moles of nitrogen consumed = 4 moles × 1 mole/1 mole N2 × 2 mole NH3/1 mole N2 = 8 moles NH3
The moles of hydrogen consumed = 9 moles × 2 mole NH3/3 mole H2 × 2 mole NH3/1 mole N2 = 4 moles NH3
Thus, the moles of nitrogen remaining = 6.64 × 10−24 mol – 8 × 2/3 × 6.02 × 10^23 mol-1 = 5.06 × 10−24 mol
The moles of hydrogen remaining = 1.50 × 10−23 mol – 4 × 2/3 × 6.02 × 10^23 mol-1 = 8.77 × 10−24 mol

Finally, the number of molecules of each reactant remaining can be calculated as follows:
Number of N2 molecules remaining = 5.06 × 10−24 mol × 6.02 × 10^23 molecules/mol = 3.05 × 10−1 molecules ≈ 0 molecules
Number of H2 molecules remaining = 8.77 × 10−24 mol × 6.02 × 10^23 molecules/mol = 5.28 × 10−1 molecules ≈ 0 molecules.

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The carrying capacity of the area was reduced in the year 10 according to the graph that shows the number of foxes on the island over a span of 15 years.

The graph shows a population of foxes over a span of 15 years. The y-axis represents the number of foxes on the island, while the x-axis represents time. The study began with the earlier 0 and ran until the start of year 15. According to the graph, the carrying capacity of the area was reduced in the year 10.

In the graph, it is shown that the population of foxes on Sunday Gill island had a significant increase from year 0 to year 3. After year 3, the fox population started to decrease and then remained fairly constant until year 10. After year 10, the population of foxes on the island started to decline more rapidly until the end of the study in year 15

This decline in the population of foxes on the island is most likely due to the reduction in carrying capacity of the area. Carrying capacity refers to the maximum number of individuals that an environment can sustain. When the carrying capacity of an environment is reached, it means that the environment can no longer provide the necessary resources to sustain the population.  

There are various factors that can cause a reduction in carrying capacity, such as environmental degradation, competition for resources, or a natural disaster. In this case, it is not clear what caused the reduction in carrying capacity in year 10, but it is likely that it was due to some environmental factor that impacted the availability of resources for the fox population.
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Answer:

3 bags are required.

Explanation:

Find the number of mg needed for 150 pounds

150 pounds * 5 mg/pound = 750 mg

1 bag = 250 mg

x bags = 750 mg               Cross multiply

250 * x= 750                      Divide by 250

x = 750/250

x = 3

the concepts of mole and chemical reactions, the element of the three compounds can be found.

compound 1     carbon - Nitrogen    CN

compound 2    carbon - Oxygen     CO

compound 3    carbon - Sulfur         CS

Chemical reactions are expressed in moles of each constituent element. The mole is one of the fundamental quantities of physics and is defined as the amount of matter in 0. 012 kg of carbon 12, in practical form the moles of a given element in a chemical reaction is found with the expression

            n = m / Pm

where n is the number of moles, m the mass of the element and PM the molecular weight (taken from the periodic table) of the element.

Let's apply to our compounds as the chemical formula is CX, there is an atom of each element, let's look for the moles of carbon.

compound 1

mass of coal 4.2

carbon mole

             n_C = 4.2 / 12

             n_C = 0.35 mol

as in the chemical reaction there is an atom of each element, there are also 0.35 moles of the unknown element, let's find its molecular weight (PM)

            PM = m / n

            PM = 4.9 / 0.35

            PM = 14 gr / mol

When reviewing the periodic table this weight corresponds to Nitrogen(N)  

The elect is Nitrogen

compound 2

carbon mass 3.5

carbon moles

            n_C = 3.5 / 12

            n_C = 0.29167

moles of unknown element n = 0.29167

mass of unknown element m = 4.67

molecular weight

          PM = 4.67 / 0.29167

          PM = 16 gr / mol

Checking the periodic table corresponds to the element Oxygen (O)

Compound 3

carbon mass 1.3

carbon moles

             n_C = 1.3 / 12

             n_C = 0.1083

moles unknown element n = 0.10833

mass unknown element m = 3.47

            PM = 3.47 / 0.10833

            PM = 32 gr / mol

In the periodic table the element Sulfur (S) has this molecular weight

Using the concepts of mole and chemical reactions, the elements of the three compounds can be found.

compound 1          carbon - Nitrogen      CN

compound 2         carbon - Oxygen       CO

compound 3         carbon - Sulfur           CS

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The volume of the weather balloon at 75 cmHg is  (n₁ * R * T₂) / P₂ = (n₁ * 0.0821 L·atm/(mol·K) * 308.15 K) / 0.9868 atm.

The volume of the weather balloon at 75 cmHg when it is heated to 35 degrees Celsius, we can use the ideal gas law, which states that the product of pressure (P) and volume (V) of a gas is proportional to the product of the number of moles (n) and the temperature (T) in Kelvin.

PV = nRT

Where R is the ideal gas constant.

First, let's convert the initial volume from dm³ to liters:

Initial volume = 605 dm³ = 605 L

At STP (Standard Temperature and Pressure), the temperature is 273.15 K and the pressure is 1 atmosphere (atm).

Using the initial conditions:

P₁ = 1 atm

V₁ = 605 L

T₁ = 273.15 K

We can calculate the number of moles (n₁) of gas using the ideal gas law:

n₁ = (P₁ * V₁) / (R * T₁)

Now, we need to find the final volume (V₂) at 75 cmHg and 35 degrees Celsius.

Converting 75 cmHg to atmospheres:

P₂ = 75 cmHg * (1 atm / 76 cmHg) ≈ 0.9868 atm

so,

P2 = 75 cmHg / 76 cmHg/atm = 0.9868 atm.

Now we can substitute the values into the equation and calculate V2:

V2 = (1 atm / 0.9868 atm) * (T2 / 308.15 K) * (605 liters).

Please provide the new temperature (T2) in Celsius, and I will calculate the volume for you.\((n₁ * R * T₂) / P₂ = (n₁ * 0.0821 L·atm/(mol·K) * 308.15 K) / 0.9868 atm\)

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The oxidation state of nitrogen (N) in NaNO3 is +5. option B

To determine the oxidation state of nitrogen (N) in sodium nitrate (NaNO3), we need to assign oxidation numbers to each element in the compound.

In NaNO3, we know that the sodium ion (Na+) has a +1 oxidation state because it is an alkali metal. Oxygen (O) typically has an oxidation state of -2 in compounds, and there are three oxygen atoms in NaNO3. Since the compound is neutral, the sum of the oxidation states must be zero.

Let's assume that the oxidation state of nitrogen is x. Therefore, we can set up the equation:

(+1) + x + (-2) * 3 = 0

Simplifying the equation:

+1 + x - 6 = 0

x - 5 = 0

x = +5

Therefore, the oxidation state of nitrogen (N) in NaNO3 is +5.

The oxidation state of an element indicates the number of electrons it has gained or lost in a compound. In this case, the nitrogen atom in NaNO3 has gained five electrons to achieve a stable oxidation state of +5.

It is important to note that oxidation states are formal charges and do not necessarily represent the actual distribution of electrons in a compound. They are assigned based on a set of rules and can be useful in understanding the reactivity and behavior of elements in chemical reactions.

Option B

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Answer:

the adjective is the word "famous" because an adjective describes a noun. and ben franklin is the noun here. (or subject.)

Answer:

famous is the adjective, since it is describing Ben Franklin

Hope this helps.

According to Newton's second law, force equals mass multiplied by acceleration. As a result, in a car accident, the force exerted by the vehicle and its occupants decreases as the time required for the vehicle to stop increases.

We clearly observed in the Exploration that when two cars collide, each feels a force from the other.

According to Newton's third law, when one object exerts a force on another, the second object feels an equal and opposite force exerted by the first object. This is very clear in the two-object collision.

The force with which your body is struck in a collision is referred to as crash force. Crash force is equal to your body weight multiplied by the vehicle's speed.

Newton's second law states that force equals mass multiplied by acceleration. As a result, the force exerted by the vehicle and its occupants in a car accident decreases as the time required for the vehicle to stop increases.

Thus, this way it hits the car.

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The number of electrons that enter the 3d subshell of an atom whose atomic number is 22​ is 2.

An atom with an atomic number of 22 is Titanium. It is a strong, lightweight metal that is resistant to corrosion and is used in a variety of applications, including aircraft, spacecraft, medical implants, and jewelry.

The 3d subshell can hold up to 10 electrons, but Titanium only has 2 electrons in the 3d subshell. This is because the 4s subshell is lower in energy than the 3d subshell, so the electrons are filled in the 4s subshell before they are filled in the 3d subshell.

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Answer:

Explanation:

When 2-methyl butane (also known as isopentane) is monochlorinated, the chlorine atom can substitute for the hydrogen atom at various places along the carbon chain, resulting in the generation of several isomers.

There are four distinct hydrogen atoms accessible for replacement in 2-methyl butane: one at the methyl group (C2) and three at the carbon chain (C3, C4, and C5).

Each of these hydrogen atoms can be replaced by a chlorine atom, yielding four distinct monochlorinated isomers.

As a result, the total number of isomers generated when 2-methyl butane is monochlorinated is four.

Taking into account the reaction stoichiometry, 1 mole of H₂ can be produced by reacting 2 moles of HCI.

In first place, the balanced reaction is:

Mg + 2 HCl  → MgCl₂ + H₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

By reaction stoichiometry 2 moles of HCl form 1 mole of H₂.

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Answer:

The answer to your question is given below

Explanation:

1. 2,4-dimethylhexane can be drawn as follow:

a. The parent name: Hexane i.e it contains 6 carbon atom.

b. The substitute group attached: Methyl i.e CH3 and it is at carbon 2 and 4.

c. Draw 6 carbon atom in a straight line and put CH3 at carbon 2 and 4. As shown in attach photo.

2. 4-methyl-2-pentene can be drawn as follow:

a. The parent name: pentene i.e it contains 5 carbon atom and the double bond is at carbon 2.

b. The substitute group attached: Methyl i.e CH3 and it is at carbon 4.

c. Draw 5 carbon atom in a straight line and put a double bond at carbon 2 and CH3 at carbon 4 as shown in attach photo.

3. 4-chloro-7-methyl-2-nonyne can be drawn as follow:

a. The parent name: nonyne i.e it contains 9 carbon atom and the triple bond is at carbon 2.

b. The substitute group attached:

i. Chlorine (Chloro) i.e Cl and it is at carbon 4.

ii. Methyl i.e CH3 and it is at carbon 7.

c. Draw 9 carbon atom in a straight line and put a triple bond at carbon 2, Cl at carbon 4 and CH3 at carbon and 7 as shown in attach photo.

The partial charges on each fluorine atom are negative. Option B) The central O atom is the correct answer. Option B

The partial charges in a molecule are determined by the electronegativity values of the atoms involved. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond. In the case of \(F_2O\), fluorine (F) is more electronegative than oxygen.

Fluorine is the most electronegative element on the periodic table, meaning it has a high ability to attract electrons. Oxygen is also relatively electronegative but less so than fluorine. When fluorine atoms bond with oxygen, the shared electrons will be pulled more towards the fluorine atoms, creating a polar covalent bond.

In \(F_2O\), each fluorine atom will pull the shared electrons towards itself, resulting in a higher electron density around the fluorine atoms. This creates a region of partial negative charge around the fluorine atoms.

Conversely, the oxygen atom will have a region of lower electron density and, therefore, a partial positive charge. This is because the shared electrons spend more time around the fluorine atoms due to their higher electronegativity.

Option B

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The percent ionization of the unknown monoprotic acid is 7.51%.

What is Room Temperature?

Room temperature is a range of temperatures that is comfortable for humans to be in for extended periods of time, typically between 20-25 degrees Celsius (68-77 degrees Fahrenheit). However, the definition of room temperature can vary depending on cultural and regional norms, as well as the specific application. In scientific contexts, room temperature is often defined more precisely, for example as 20-22 degrees Celsius (68-72 degrees Fahrenheit) in laboratory settings.

The percent ionization of an acid is defined as the ratio of the concentration of ionized acid (H+) to the initial concentration of the acid (HA) multiplied by 100%.

% Ionization = [H+]/[HA] x 100%

The concentration of H+ in a solution can be calculated from the pH using the formula:

pH = -log[H+]

Rearranging this equation gives:

[H+] = 10^(-pH)

Substituting the given values of pH = 1.862 and the initial concentration of the acid [HA] = 0.213 M into these equations, we get:

[H+] = 10^(-1.862) = 0.016 M

% Ionization = [H+]/[HA] x 100% = (0.016 M/0.213 M) x 100% = 7.51%

Therefore, the percent ionization of the unknown monoprotic acid is 7.51%.

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Answer:noble gases

Explanation:

The reaction of -COOH and -NH₂ creates a peptide bond.

Peptide bond is defined as a type of amide type covalent chemical bond which is formed between the two simultaneous molecules of amino acid in such a way that carboxyl group of one molecule of amino acid get attached to the NH₂ group of another molecules of Amino acid.

Peptide bond is formed by the elimination of water molecules.

The hydroxyl group from the carboxyl and proton hydrogen cation from NH₂ group.

Thus, we concluded that the reaction of -COOH and -NH₂ creates a peptide bond by losing—OH from the -COOH and H+ from the -NH₂.

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Answer:

compounds ok I think I can't anderstand good

As the atom has 7 protons and 7 electrons, it can be referred to as neutral atom, the correct option is B.

When an atom has an equivalent number of electrons as well as protons, it has an equal number of electrons with negative electric charges and protons with positive electric charges.

As a result, the total electric charge of the atom is zero, and it is said to be neutral. As a result, all elements in the periodic table have neutral atoms.

Because the atom has 7 protons and 7 electrons, it is known as a neutral atom.

Thus, the correct option is B.

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Answer:

D.) State the question, form a hypothesis, conduct an experiment

Explanation:

https://www.colorincolorado.org/article/steps-scientific-process

Answer:

Cattail

Explanation:

Cattail is the plant which have aquatic habitat​.

An area with water that directly supports a particular species, population, as well as the community is referred to as an aquatic habitat.

Cattails were also perennial upright plants that grow from rhizomes which creep. The long, tapering petals seem to be slightly spongy and even have smooth borders.

Cattail is a plant which has aquatic habitat​.

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This equation shows that n moles of CO₂ are created for every 1 mole of oxygen that is consumed. To convert to grams, we must first compute how many moles of O₂ are produced from 8.5 g of O2, then use that amount to establish how many moles of CO₂ are generated.

One carbon atom contributes 12.01 g/mol to carbon dioxide (CO₂), while the two oxygen atoms together contribute (2)(16.00) = 32.00 g/mol.

022 10 23 molecular units 8 grams of oxygen gas have = 8 32 6. 022 10 23 = 1. 5 10 23 molecules in it. Thus, 1 will be the appropriate response to be entered in the blank.

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Answer:

E°(Ag⁺/Fe°) = 0.836 volt

Explanation:

3Ag⁺ + 3e⁻ => Ag°;            E° = +0.800 volt

Fe° => Fe⁺³ + 3e⁻ ;             E° = -0.036 volt

_________________________________

Fe°(s) + 3Ag⁺(aq) => Fe⁺³(aq) + 3Ag°(s) ...    

E°(Ag⁺/Fe°) = E°(Ag⁺) - E°(Fe°) = 0.800v - ( -0.036v) = 0.836 volt

Answer:

43 protons

36 electrons

56 neutron

Explanation:

neutron is mass number minus proton number.

in a non neutral atom the electron is determined after minusing the charges or electron lost.

the number of proton obviously is 43

Answer:

1.96 ×10²⁴ formula units AgNO3

Explanation:

3.25mol AgNO3 × (6.02 × 10²³ formula units) = 1.96 ×10²⁴ formula units AgNO3

There are 1.957 × 10²⁴ formula units of AgNO3 in 3.25 mol of AgNO3. Details about formula units is found below.

Formula units of a substance can be calculated by multiplying the number of moles of the substance by Avogadro's number. That is;

Formula units = 6.02 × 10²³ × no of moles

According to this question, there are 3.25mol of AgNO3. The formula unit of AgNO3 is calculated as follows:

Formula units = 3.25 × 6.02 × 10²³

Formula units = 19.57 × 10²³

Formula units = 1.957 × 10²⁴

Therefore, there are 1.957 × 10²⁴ formula units of AgNO3 in 3.25 mol of AgNO3.

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Answer:

With the use of same chemicals, same gas will be produced while the use of different chemicals, different gases will be produced.

Explanation:

The same gas was produced in each assignment if the same chemicals are mixed with each other while different gases were produced in each assignment when different chemicals are allowed to mix. If every time, same chemicals and same concentration of chemicals are mixed together, the result will be the same means production of same gas but if different chemicals are allowed to mix, then the product will be the production of different gases.