Give three members of cycloalkanes (n = 3, 4, 5) and alkenes (n = 3, 4, 5)

101 mmHg is the total pressure in the tank.

Thus, Dalton's Law of Partial Pressures states that while the volume and temperature of a gaseous mixture are held constant, the total pressure of the mixture is equal to the sum of the partial pressures of its gaseous components.

Nitrogen, oxygen, argon, carbon dioxide, water vapor, and a trace amount of other gases are all present in atmospheric air and pressure.

The increased oxygen content in the chamber can displace the CO bound to hemoglobin faster than air oxygen, hence the hyperbaric chambers are also used to treat carbon monoxide (CO) poisoning. The treatment of scuba divers with the bends is another application for hyperbaric chambers.

Thus, 101 mmHg is the total pressure in the tank.

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Answer:

To convert joules to calories, you can use the conversion factor:

1 calorie = 4.184 joules

To find out how many calories are in 4,180 joules, divide the given value by the conversion factor:

4,180 joules / 4.184 joules per calorie = 0.9 calories (approximately)

Therefore, there are approximately 0.9 calories in 4,180 joules.

Answer:

12

Explanation:

12

According to the chemical equation, when 6 mol of KBr are produced 1 mol of Al(SO3) is produced aswel. This means we have to divide the number of mols of KBr produced (2.44) by 6, and then multiply the result for 1. This gives 0.4067 moles

Answer:

its a gas

Explanation:

Hydrogen  is the chemical element in the periodic table that has the symbol H and atomic number 1. At standard temperature and pressure it is a colorless, odorless, non-metallic, univalent, highly flammable diatomic gas. Hydrogen is the lightest and most abundant element in the universe.

In the given question, the state of matter of Hydrogen is gas in nature.

A state of matter is one of the four distinct forms in which matter can exist as solid, liquid, gas, and plasma.

Hydrogen is a chemical element that occurs naturally as a gas at standard temperature and pressure (STP). It is the lightest and most abundant element in the universe and is found in stars, gas giants, and other celestial bodies.

It is also used in various industrial processes, such as the production of ammonia and methanol, and as a fuel source in fuel cells.

Therefore, hydrogen is in the gaseous state at room temperature and normal atmospheric pressure.

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Answer:

20 atoms

Explanation:

n=3

H =12

p=1

O=4

3+12+1+4=20

Answer:

1g/mL is the correct answer

Image 1

1) There is more proton repulsion in Uranium than in Barium

2) Barium experiences a stronger force holding the nucleons together

3) The repulsion of the neutrons in Uranium makes the nuclide unstable

4) The higher the atomic number, the more likely that the nucleus is radioactive.

5) U-238 has 146 neutrons

6) U - 235 has 143 neutrons

Image 2;

1) You can minimize background radiation by limiting your outdoor exposure.

2) Cosmic radiation is the most difficult to avoid.

The natural radiation that is constantly present in the environment is known as background radiation.

It includes internal radiation found in all living things as well as cosmic radiation, which originates from the sun and stars and terrestrial radiation, which originates from the Earth.

We know that the repulsion of the protons in the Uranium nucleus is more than that of the barium nucleus because there are more neutrons in the Uranium nucleus. It is this repulsion that makes Uranium unstable.

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There are 8.16 × 10-³ moles of CO2 gas at 100°C with a volume of 250 mL at 760 mm Hg.

HOW TO CALCULATE NUMBER OF MOLES:

The number of moles of a sample of gas can be calculated using the following formula:

PV = nRT

Where;

According to this question;

1 × 0.250 = n × 0.0821 × 373

0.250 = 30.62n

n = 0.250 ÷ 30.62

n = 8.16 × 10-³mol

Therefore, there are 8.16 × 10-³ moles of CO2 gas at 100°C with a volume of 250 mL at 760 mm Hg.

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166 milligrams is equal to 0.166 grams.

If 2.28x10^-22 grams is the mass of 1 atom, then 0.166 grams would constitute how many atoms?

The equation we would make is as follows:

2.28x10^-22/1 = 0.166/x

- If we cross multiply and solve for x, we get the answer which is 7.28x10^20 atoms.

Answer:

V₂ = 520.42 mL

Explanation:

Given data:

Initial volume = 350.0 mL

Initial pressure = 840 mmHg

Initial temperature = 33°C (33 +273 = 306 K)

Final temperature = 52°C (52+273 = 325 K)

Final volume = ?

Final pressure = 600 mmHg

Formula:  

P₁V₁/T₁ = P₂V₂/T₂  

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Solution:

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 840 mmHg × 350.0 mL × 325 K / 306 K × 600 mmHg

V₂ = 95550000 mmHg.mL.K /183600 K.mmHg

V₂ = 520.42 mL

The cell potential should be greater than the reduction potential for Cu.

It is given that,

The cell potential should be zero.

Because here we are considering the Cu-Cu cell so there would not be any potential difference and hence 0 E° cell value.

As we know that the reduction potential of copper is 0.34 V and the reduction potential of Mg is -2.37V

If we calculate the E°cell then,

E°cell= E(cathode)- E(anode)

Here copper is acting as the cathode and Mg as the anode

So, E°cell= 2.71V

So, the cell potential should be greater than the reduction potential for Cu.

Hence, option (c) is the correct choice.

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Answer:

A. Producing a fire gram fuel

Explanation:

None of the other actions create light. Fire gives off light and heat.

The total gaseous mixture is 4.48 g.

The total gaseous mixture can be calculated using the ideal gas law: PV = nRT.

First, we need to convert the temperature to Kelvin: 27.0°C + 273.15 = 300.15 K.

Next, we can use the ideal gas law to calculate the number of moles of each gas:

For He: n = (1.12 atm) (2.00 L) / (0.08206 L·atm/mol·K) (300.15 K) = 0.0906 mol

For Ar: n = (4.53 g) / (39.95 g/mol) = 0.113 mol

The total number of moles of gas in the mixture is then:

n(total) = n(He) + n(Ar) = 0.0906 mol + 0.113 mol = 0.204 mol

Finally, we can calculate the total mass of the mixture:

m(total) = n(total) × M(avg)

where M(avg) is the average molar mass of the mixture, which can be calculated as:

M(avg) = (M(He) + M(Ar)) / 2 = (4.003 g/mol + 39.95 g/mol) / 2 = 21.98 g/mol

Thus,

m(total) = 0.204 mol × 21.98 g/mol = 4.48 g

Therefore, The total weight of the gaseous mixture is 4.48 g.

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Answer:

4.62 atm

Explanation:

To find the missing pressure, you need to use the Combined Gas Law equation:

P₁V₁ / T₁ = P₂V₂ / T₂

In this equation, "P₁", "V₁", and "T₁" represent the initial pressure, volume, and temperature. "P₂", "V₂", and "T₂" represent the final pressure, volume, and temperature.

P₁ = 8.01 atm                      P₁ = ? atm

V₁ = 715 mL                        V₁ = 963 mL

T₁ = 67 °C                           T₁ = 52 °C

P₁V₁ / T₁ = P₂V₂ / T₂

(8.01 atm)(715 mL) / 67 °C = P₂(963 mL) / 52 °C

85.47985 = P₂(963 mL) / 52 °C

4444.952 = P₂(936 mL)

4.62 atm = P₂

Answer:

The chemical reaction identified is:

2Al + 3CuCl2 → 2AlCl3 + 3Cu

In this reaction, aluminum (Al) reacts with copper chloride (CuCl2) to form aluminum chloride (AlCl3) and copper (Cu). The coefficients in front of the chemical formulas indicate the stoichiometric ratio of the reactants and products, which means that two moles of Al react with three moles of CuCl2 to produce two moles of AlCl3 and three moles of Cu.

Reaction b,c and d could be written as net ionic equations.

The electrolyte in the solution produces ions.  

The equation of a chemical reaction can be expressed in the equation of the ions  

For strong electrolytes (the ionization rate = 1) is written in the form of separate ions, while the weak electrolyte (degree of ionization <1) is still written as an un-ionized molecule  

In the ion equation, there is a spectator ions that is the ion which does not react because it is present before and after the reaction  

When these ions are removed, the ionic equation is called the net ionic equation  

For gases and solids including water (H₂O(l)) can be written as an ionized molecule  

So only the dissolved compound is ionized ((expressed in symbol aq)  

To see the reaction can be expressed in terms of the net ionic equation, we must see that there are two or more ions that are the same from both sides of the reactant and the product in the form of aquoeus (because the form of compounds in the form of gases, solids and liquids will remain molecular and non-ionized)

CH4 (g) + 2 O2 (g) = CO2 (g) + 2 H2 O(g)

No⇒no compounds in the aqueous form

Cu(s) + 2 AgNO3 (aq) = 2 Ag(s) + Cu(NO3 )2 (aq)

Cu(s) + 2 Ag⁺+ 2NO3⁻ (aq) = 2 Ag(s) + Cu²⁺ +2NO3⁻ (aq)

Cu(s) + 2 Ag⁺(aq) = 2 Ag(s) + Cu²⁺(aq)

yes, because there are NO3 (spectators ion) on both sides

MgCl2 (aq) + 2 KOH(aq) = Mg(OH)2 (s) + 2 KCl(aq)

Mg²⁺(aq)+2Cl⁻ (aq) + 2K⁺(aq)+2OH⁻(aq) =  Mg(OH)2 (s)+ 2K⁺(aq)+2Cl⁻(aq)

Mg²⁺(aq)+2OH⁻(aq) =  Mg(OH)2 (s)

yes, because there are 2Cl⁻ (aq) and 2K⁺(aq (spectators ion) on both sides

CaCO3 (s) + 2 HCl(aq) = CaCl2 (aq) + CO2 (g) + H2 O(l)

CaCO3 (s) + 2 H⁺(aq)+2Cl⁻(aq) = Ca²⁺(aq)+2Cl⁻ (aq) + CO2 (g) + H2 O(l)

CaCO3 (s) + 2 H⁺(aq) = Ca²⁺(aq) + CO2 (g) + H2 O(l)

yes, because there are Cl⁻ (spectators ion) on both sides

Answer:

Because the same amount of sugar is still there. The solid sugar crystals break apart in water as the sugar dissolves, but the individual sugar particles or molecules are still present and do not change as a result of dissolving in the water. The combined mass of the sugar and water shouldn't change.

Answer:

True

Explanation:

Earth is a single interconnected system but it can be subdivided into smaller systems.

The percentage yield of AgBr is 63.14%

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

Molar mass of Ag₂CO₃ = (2×108 ) + 12 + (3×16) = 276 g/mol

Mass of Ag₂CO₃ from the balanced equation = 1 × 276 = 276 g

Molar mass of AgBr = 108 + 80 = 188 g/mol

Mass of AgBr from the balanced equation = 2 × 188 = 376 g

From the balanced equation above,

276 g of Ag₂CO₃ reacted to produce 376 g of AgBr

From the balanced equation above,

276 g of Ag₂CO₃ reacted to produce 376 g of AgBr

Therefore,

5 g of Ag₂CO₃ will react to produce = (5 × 376) / 276 = 6.81 g of AgBr

Thus, the theoretical yield of AgBr is 6.81 g

Actual yield of AgBr = 4.3 g

Theoretical yield of AgBr = 6.81 g

\(percentage \: yield \: = \frac{actual}{theoretical} \times 100 \\ \\ percentage \: yield \: = \frac{4.3}{6.81} \times 100 \\ \\ percentage \: yield \: = 63.14\%\)

Thus, the percentage yield of AgBr is 63.14%

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The highest boiling point based on the data is option 4

Compared to alcohols of comparable molecular weight, carboxylic acids often have higher boiling temperatures. Between the hydrogen atoms of adjacent molecules and the oxygen in the carboxyl group of carboxylic acids, strong intermolecular hydrogen bonds can develop. Because it takes more energy to break the intermolecular interactions and change the substance from a liquid to a gas during boiling, these hydrogen bonds help materials have higher boiling temperatures.

Although carboxylic acids and alcohols are both capable of forming hydrogen bonds, carboxylic acids have higher boiling temperatures due to the extra carboxyl group that they contain.

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The elements are the simplest chemical forms and they cannot be broken down through chemical reactions. There are many elements in the given formulas.

What are elements?

The elements are defined as those substances whose atoms all have the same number of protons. The elements are considered as the building blocks of matter. Each element has an atomic number and a symbol.

Each atom is regarded as an element. The elements create bonds to form molecules. The isotopes are the elements with the same atomic number but different mass numbers.

NaC₂HO₄ - 'N' , 'C', 'H','O'

H₂F₅BLi - 'H','F','B','Li'

He₂PSO₄ - 'He', 'P','S','O'

He₂O₄PH - 'He', 'O','P','H'

Answer:

so i got 34.5

Explanation:

Approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

To determine the number of molecules of HCl required to form 34.52 g of MgCl₂, we need to use the molar mass and stoichiometry of the balanced equation:

Mg(OH)₂(s) + 2 HCl(aq) → 2 H₂O(l) + MgCl₂(aq)

The molar mass of MgCl₂ is 95.21 g/mol.

First, we need to calculate the number of moles of MgCl₂ formed:

Moles of MgCl₂ = mass of MgCl₂ / molar mass of MgCl₂

Moles of MgCl₂ = 34.52 g / 95.21 g/mol

Moles of MgCl₂ = 0.363 mol

According to the balanced equation, the stoichiometric ratio between HCl and MgCl₂ is 2:1. Therefore, the moles of HCl required can be calculated as follows:

Moles of HCl = 2 * Moles of MgCl₂

Moles of HCl = 2 * 0.363 mol

Moles of HCl = 0.726 mol

To calculate the number of molecules, we need to use Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.

Number of molecules of HCl = Moles of HCl * Avogadro's number

Number of molecules of HCl = 0.726 mol * 6.022 x 10^23 molecules/mol

Number of molecules of HCl = 4.37 x 10^23 molecules

Therefore, approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

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Nitrous acid is a weak acid dissociation reaction, written using the H30 convention, is: HNO2 + H30 (where is used as the equilibrium symbol).

nitrous acid is an inorganic compound having the formula HNO3. It is a powerfully corrosive mineral acid. Although the material is colorless, older samples could have a yellow tint from nitrogen oxide decomposition. Most commercially available nitric acid has a 68% concentration in water. When the solution contains more than 86% HNO3, nitric acid flares. Depending on how much nitrogen dioxide is present, fuming nitric acid can also be categorized as red fuming nitric acid at concentrations above 86% or white fuming nitric acid at concentrations above 95%.

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Answer:

To prepare vegetables for finishing by grilling, sautéing, pan frying, deep frying, or stewing, you should parboil them to cook them to partial doneness.

Answer:

83.7% oxygen, 16.3% hydrogen

Explanation:

Mass of compound = 16.75 g

Mass of Oxygen = 14.02 g

Mass of Hydrogen =  2.73 g

Percentage composition = Mass of element /  Mass of compound    100%

Percentage composition of Oxygen = 14.02 g / 16.75 g    * 100%

Percentage composition of Oxygen = 0.837 * 100 = 83.7%

Percentage composition of Hydrogen = 2.73 g / 16.75 g    * 100%

Percentage composition of Hydrogen = 0.163 * 100 = 16.3%

The correct option is;

83.7% oxygen, 16.3% hydrogen

Answer:

83.7% oxygen, 16.3% hydrogen

Explanation:

To determine the percent composition we can divide, our mass by total mass and afterwards, multiply by 100.

(Mass of O / Total mass) . 100 = % O

(Mass of H / Total mass) . 100 = % H

Remember that:

% O + % H = 100

Mass of O / Total mass + Mass of H / Total mass = 1

(14.02 g / 16.75g) . 100 = 83.7 %

(2.73 g /16.75g) . 100 = 16.3 %

The properties of a natural resource that make it useful for humans as a material or energy source is the ability to convert mass into energy and vice versa.

The expression natural resources make reference to all types of matter and energy extracted from nature that can be used to produce goods and services.

Some examples of natural resources include for example irreversible resources such as fossil fuels (i.e., oil, or coal, gas, minerals such as metals, rocks, etc) as well as those based on the use of reversible energy such as eolic air energy, solar radiation or sunlight, soil and hydric resources or water.

Therefore, with this data, we can see that natural resources can be defined as any material and or energy obtained from nature that may be irreversible or reversibly used to produce goods and services.

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