Balance the following reaction. A coefficient of "1" is understood. Choose the option "blank" for the correct answer if the coefficient is "1."
C3H8 + O2 → CO2 + H2O

Chemolithotrophy refers to the ability of microorganisms to use inorganic compounds like sulfur, nitrogen, and iron as an energy source. Inorganic chemicals that are energy-rich and can be used as energy sources by chemolithotrophs are Sulfur Compounds, Iron Compounds, Nitrogen Compounds and Manganese Compounds

Chemolithotrophs are often found in extreme environments, like volcanic vents or deep-sea hydrothermal vents, and they play a critical role in the earth’s biogeochemical cycles.

Inorganic chemicals that are energy-rich and can be used as energy sources by chemolithotrophs are as follows:

Sulfur Compounds: Hydrogen sulfide (H2S), sulfur dioxide (SO2), and elemental sulfur (S) are all examples of sulfur compounds that can serve as energy sources for certain chemolithotrophic bacteria.

Iron Compounds: Ferrous iron (Fe2+), ferric iron (Fe3+), and other iron-containing minerals can be used as energy sources by some chemolithotrophic bacteria.

Nitrogen Compounds: Nitrate (NO3-), ammonium (NH4+), and other nitrogen-containing compounds can be used as energy sources by certain chemolithotrophic bacteria.

Manganese Compounds: Manganese (IV) oxide (MnO2) and other manganese compounds can be used as energy sources by some chemolithotrophic bacteria.

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Answer:

A. its reactivity

Explanation:

It's reactivity because copper was exposed to air and if it is reactivity it must be exposed to air

Answer:

A.  reactivity

Explanation:

Answer:

There are five types of kinetic energy: radiant, thermal, sound, electrical and mechanical. Let us look at some of the kinetic energy examples and learn more about the different types of kinetic

hope it is helpful to you

While passing a current through an aqueous (water) solution of ZnCl₂, zinc (Zn²⁺) ions are reduced, and chlorine (Cl⁻) ions are oxidized.

The reaction of ZnCl₂ goes as shown below:

Zn²⁺   +  2Cl⁻   →    Zn   +    Cl₂

At the anode (oxidation occurs):

2Cl⁻     →    Cl₂  +   2 e-

Here, Cl⁻ ions are oxidized.

Oxidation is the release of electron from one element to the other getting reduced. The agent that releases the electron is known as reducing agent.

At the cathode (reduction occurs):

Zn²⁺    +   2 e-     →     Zn

Here, Zn²⁺ ions are reduced.

Reduction is the acceptance of electron by one element from the other getting oxidized. The agent that accepts  the electron is known as oxidizing agent.

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Answer:

the answers are given in the photo

Answer:

Reagent O₂ will be consumed first.

Explanation:

The balanced reaction between O₂ and C₄H₁₀ is:

2 C₄H₁₀ + 13 O₂ → 8 CO₂ + 10 H₂O

Then, by reaction stoichiometry, the following amounts of reactants and products participate in the reaction:

Being:

The molar mass of the compounds that participate in the reaction is:

Then, by reaction stoichiometry, the following mass quantities of reactants and products participate in the reaction:

If 78.1 g of O₂ react, it is possible to apply the following rule of three: if by stoichiometry 416 g of O₂ react with 116 g of C₄H₁₀, 62.4 g of C₄H₁₀ with how much mass of O₂ do they react?

\(mass of O_{2} =\frac{416grams of O_{2}*62.4 grams ofC_{4}H_{10} }{116 grams of C_{4}H_{10}}\)

mass of O₂= 223.78 grams

But 21.78 grams of O₂ are not available, 78.1 grams are available. Since you have less mass than you need to react with 62.4 g of C₄H₁₀, reagent O₂ will be consumed first.

Answer:Hi! I hope this will help you with your question, whether this is an assignment or not. The answer that I get is 0.033 concentration.

If 0.0025 mol NaNo3 forms during the reaction, the concentration of NaNO3 in the final solution should be 0.033.

Explanation:

The cylinder can supply approximately 28.8 liters of oxygen at a pressure of 3.0 atm.

To find the volume of oxygen that the cylinder can supply at the given pressure, we can use Boyle's Law, which states that the volume of a gas is inversely proportional to its pressure when temperature is constant. The formula is:

P₁V₁ = P₂V₂

Where:

P₁ = Initial pressure of the gas (160.0 atm)

V₁ = Initial volume of the gas (600.0 L)

P₂ = Final pressure of the gas (3.0 atm)

V₂ = Final volume of the gas (unknown)

Rearranging the formula to solve for V₂, we have:

V₂ = (P₁ * V₁) / P₂

Substituting the given values:

V₂ = (160.0 atm * 600.0 L) / 3.0 atm

V₂ = 32,000 L / 3.0 atm

V₂ ≈ 10,666.7 L

Therefore, the cylinder can supply approximately 28.8 liters (rounded to one decimal place) of oxygen at a pressure of 3.0 atm.

The cylinder can provide approximately 28.8 liters of oxygen at a pressure of 3.0 atm. It is important to note that this calculation assumes ideal gas behavior and constant temperature.

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Answer:

mass cannot be created nor destroyed just moved around

Explanation:

The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed so it can only be moved around during a chemical reaction

Answer:i dont know

Explanation:

I D

K

Answer:

Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence. Scientific methodology includes the following: Objective observation: Measurement and data (possibly although not necessarily using mathematics as a tool)

Explanation:

Answer:

Modern science is typically divided into three major branches that consist of the natural sciences (e.g., biology, chemistry, and physics), which study nature in the broadest sense; the social sciences (e.g., economics, psychology, and sociology), which study individuals and societies; and the formal sciences

Answer:

A

Explanation:

A solid that dissolves in water produce alkaline solutions

ex. sodium reacts with water to form sodium hydroxide – caustic soda

Answer: Basilosaurus is a prehistoric whale which lived approximately 40 million to 34 million years ago during the Late Eocene Period.

Explanation:

Answer:

11. I think the answer is, Both humans and whale embryos have a tail and a backbone (I'm not sure).

12. Basilosaurid, any member of the family Basilosauridae, an early group of whales that lived from the middle Eocene to the late Oligocene Epoch (about 41 million to 23 million years ago).

13.  Protocetids had long snouts, large eyes, and their nasal opening was farther caudally than in earlier archaeocetes.

Hope this helps! :D

Answer:

C. 3.2 cm

Explanation:

We need to compare the values given in different units and convert them to a common unit for comparison. The smallest unit of measurement among the given options is nanometers (nm). Therefore, we need to convert all the values to nanometers and compare them.

1 cm = 10 mm

1 mm = 1,000,000 nm

Converting the given values to nanometers:

A. 320 cm = 320 x 10 mm = 3200 mm = 3,200,000,000 nm

B. 3.2 m = 3.2 x 100 cm = 320 cm = 3,200,000,000 nm

C. 3.2 cm = 3.2 x 10 mm = 32 mm = 32,000,000 nm

D. 3.2 x 102 mm = 3.2 x 102 x 1,000,000 nm = 3,200,000,000 nm

E. 3.2 x 106 nm = 3,200,000,000 nm

Comparing the values in nanometers, we see that options C is the smallest and has the same value of 32,000,000 nm. Therefore, the answer is (C) 3.2 cm

The general trend in the solubility of a solid solute as temperature is increased is that the solubility typically increases. This is because, as temperature increases, the kinetic energy of the solvent molecules also increases. This increase in kinetic energy allows the solvent molecules to break apart the intermolecular forces holding the solute together and surround the solute molecules, thereby increasing the solubility.

However, there are some exceptions to this general trend. For example, the solubility of gases in liquids generally decreases as temperature increases due to the decrease in solubility resulting from the decrease in gas solubility with increasing temperature. Additionally, there are certain solutes that have solubility curves that are not linear with temperature, such as those that have a solubility maximum at a certain temperature.

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Answer: it should be c or b

Explanation:

The statement that best explains this observation is that some of the energy in coal is destroyed by the intense heat required to release its potential energy. The correct option is B.

Electricity is light energy that is produced when charged atoms move through a closed wire made up of a substance. The motion of the charged particle produces electricity.

Here, when coal is burned to produce electricity it is less than potential energy because in making energy some amount of energy is lost in the form of heat and is released. The amount of electrical energy generated from burning coal is less than the coal's potential energy.

Thus, the correct option is B. Some energy in coal is destroyed by the intense heat required to release its potential energy.

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Answer:

Warmer, colder

Explanation:

Explanation:

Concentrated solution Dilute solution

A concentrated solution is a liquid with a high solute concentration. A dilute solution is a liquid having a lower solute content.

As more solute is added to a solution, the solution becomes more concentrated. The dissolved salt in drinking water from a well is a dilute solution.

A concentrated solution contains a substantial volume of water. The concentration of a solution can be further reduced and diluted by adding more water.

I predict that liquid C2Cl6 would exhibit higher surface tension than liquid CCl4.

The surface tension of a liquid depends on the strength of intermolecular forces between its molecules. The greater the strength of these forces, the higher the surface tension. In this case, C2Cl6 has more molecules and a larger molecular weight compared to CCl4. Therefore, C2Cl6 will have stronger intermolecular forces and higher surface tension than CCl4. the carbon atom is bonded to four chlorine atoms, resulting in a symmetrical, tetrahedral shape. This shape and the electronegativity difference between carbon and chlorine atoms create a polar molecule, which leads to stronger intermolecular forces, specifically London dispersion forces and dipole-dipole interactions. These stronger forces contribute to a higher surface tension in CCl4 compared to C2Cl6, which has a more complex molecular structure and less polar nature.

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Magnesium Oxide is a compound of Magnesium and Oxygen. As a result, it is important to determine the percentage by mass of oxygen in Magnesium Oxide (MgO). Hence, the percentage by mass of oxygen in Magnesium Oxide (MgO) is 40%.

The mass of a compound is determined by adding the mass of its constituent elements. Magnesium has a mass of 24, while Oxygen has a mass of 16. Thus, the mass of Magnesium Oxide (MgO) is 24+16= 40.00 g/mol. Therefore, the mass of oxygen in 1 mole of MgO is 16.00 g.The percentage by mass of oxygen in Magnesium Oxide can be calculated as follows:% by mass of Oxygen = mass of Oxygen / mass of Magnesium oxide × 100The mass of oxygen in 1 mole of MgO is 16.00 g. Thus,% by mass of Oxygen = (16.00/40.00) × 100% by mass of Oxygen = 40%Hence, the percentage by mass of oxygen in Magnesium Oxide (MgO) is 40%.

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Answer:

B.

Explanation:

Convection is the transfer of heat energy, I'm REALLY sure. Please tell me if its wrong in the comments!

The final temperature in kelvins is 37.7 K. To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas.

According to the ideal gas law:

P1/T1 = P2/T2

where P1 and T1 are the initial pressure and temperature, respectively, and P2 and T2 are the final pressure and temperature, respectively.

We can rearrange this equation to solve for T2:

T2 = (P2 * T1) / P1

Plugging in the given values, we get:

T2 = (2.7328 atm * 121.4 K) / 8.7551 atm

T2 = 37.7 K

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The mass percent of a molecule shows the amount each element contributes to the total molecular mass. So, acetamide is 40.7% Carbon, 23.7% Nitrogen, 27.1% Oxygen, and 8.5% Hydrogen.

Answer:

i think it is letter b. rustability but not so sureeee

The pressure of \(N_{2}\) will rise under the given conditions. And, Yes, it is possible to reverse this tendency by adding \(H_{2}\). The minimum pressure of H2 required to reverse the tendency is 0.01 atm.

The reaction involved is: \(N_{2}\)(g) + 3\(H_{2}\)(g) ⇌ 2\(NH_{3}\)(g)  Hence, when \(H_{2}\) is added to the above system, the \(N_{2}\) and  \(H_{2}\)  will react to produce \(NH_{3}\). This reaction will reduce the amount of \(N_{2}\) present in the system, causing the pressure of \(N_{2}\) to decrease. Therefore, by adding \(H_{2}\)  , we can change the tendency of \(N_{2}\) pressure from rise to fall.To calculate the minimum pressure of  \(H_{2}\)  required to reverse the tendency, we have to use the equilibrium constant, Kp. The expression for Kp for the above reaction is: Kp =( \(NH_{3}\)) / p(\(N_{2}\)) p3( \(H_{2}\) )

At equilibrium, Kp = 1.7 × 104 at 1126 °C.Now, we will solve for the minimum pressure of \(H_{2}\)   needed to reverse the tendency. Let's assume that the pressure of \(N_{2}\) has increased by x atm. Therefore, the new pressure of \(N_{2}\) will be (0.0406 + x) atm. At equilibrium, we have:

p2(\(NH_{3}\) ) / p(\(N_{2}\)) p3( \(H_{2}\) ) = 1.7 × 104

On substituting the given values and simplifying, we get:

p2(\(NH_{3}\)) / p(N2) = 6.39 × 10-5

Now, p2(\(NH_{3}\)) = 5.97 atm, and p(\(N_{2}\)) = (0.0406 + x) atm.

On substituting these values, we get:5.97 / (0.0406 + x) = 6.39 × 10-5

Solving for x, we get:x = 0.00579 atm ≈ 0.01 atm (rounded to 2 significant digits)Therefore, the minimum pressure of \(H_{2}\)   required to reverse the tendency is 0.01 atm.

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Can you please add a picture of the case??

KI - Ionic compound, KCl -Ionic compound,

C₆H₁₂O₆ - Covalent compound, C₆H₄Cl₂ - Covalent compound,  

KNO₃ - Ionic compound, C₆H₅COOH - Covalent compound

CH₃COOH - Covalent compound, Paraffin wax - Covalent compound

HCl - Covalent compound

Ionic compounds are formed from the interaction between cation ions and anions. A cation of an atom can be described as an electropositive ion and can donate valence electrons. Similarly, anions of an atom are electronegative ions and can accept electrons.

In an ionic compound, there is a complete transfer of electrons in the formation of an ionic bond, therefore, there exists an electrostatic force of attraction between the ions that forms a strong bond.

In a covalent compound, there is the mutual sharing of electrons in the covalent bonds. The shared electrons are hard to give away as nuclei of two atoms together share the electrons and create a bond stronger.

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Option B: In most pantomographic units, the central ray of the X-ray beam is directed horizontally.

By aiming the central ray horizontally, the X-ray machine can rotate around the patient's head in a semi-circular motion. During this rotation, the X-ray detector and the X-ray source move simultaneously in opposite directions. This synchronized movement allows for a continuous exposure of the X-ray film or sensor, creating a panoramic image.

The horizontal positioning of the central ray enables the panoramic X-ray machine to capture a wide field of view that includes both the upper and lower jaws, teeth, surrounding bone structures, and other important anatomical features. This comprehensive image assists dental professionals in evaluating the overall dental and skeletal structures, identifying dental abnormalities, assessing impacted teeth, examining the temporomandibular joint, and detecting potential pathology.

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Answer:

New volume v2 = 300.8 ml

Explanation:

Given:

Old volume v1 = 752 ml

Old temperature T1 = 25°C

New temperature T2 = -10°C

Find:

New volume v2

Computation:

Using Ideal gas law formula

V1T2 = V2T1

(752)(-10) = (V2)(25)

New volume v2 = 300.8 ml

Answer:

The oxidation number for sulfur in SO2 is +4.

Explanation:

To find the oxidation number of sulfur, it is simply a matter of using the formula SO2 and writing the oxidation numbers as S = (x) and O2 = 2(-2) = -4. Using the rule and adding the oxidation numbers in the compound, the equation becomes x +(-4 ) = 0. Solving for x, it is evident that the oxidation number for sulfur is +4.