When the methanol is ignited, what other reactant is involved in the reaction?.

Answer:

I believe the correct answer is c but I'm not a 100% positive

Oxygen and nitrogen from the atmosphere can be used as feedstock to produce chemicals such as ammonia, nitric acid, and sulfuric acid.

The components of the atmosphere, such as nitrogen and oxygen, can be used to produce important chemicals through industrial processes such as the Haber-Bosch process for ammonia synthesis and the production of nitric acid. Nitrogen and oxygen can also be used as oxidizers in combustion processes to produce energy and heat, such as in the burning of fossil fuels.

Additionally, carbon dioxide from the atmosphere can be used as a feedstock for the production of chemicals such as methanol and formic acid through processes like carbon capture and utilization. The use of atmospheric components in chemical production can help to reduce reliance on non-renewable resources and support the development of sustainable manufacturing processes.

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1) p=52

2)p=e=52

52-4=48

128

Answer:

To find the pressure of the dry hydrogen gas alone, we need to subtract the pressure exerted by the water vapor from the total pressure of the mixture.

First, we need to convert the vapor pressure of water from mmHg to kPa:

11.9 mmHg x (1 kPa / 7.5006 mmHg) = 0.0159 kPa

Next, we need to subtract this value from the total pressure of the mixture:

113.0 kPa - 0.0159 kPa = 112.9841 kPa

Therefore, the pressure exerted by the dry hydrogen gas alone is 112.9841 kPa.

Explanation:

Among the elements listed, the one with the smallest first ionization energy is Se (selenium). The correct answer is E.

Ionization energy refers to the amount of energy required to remove an electron from a neutral atom in its gaseous state, thereby forming a positively charged ion. The ionization energy generally increases across a period from left to right in the periodic table due to increased effective nuclear charge.

Selenium, located in Group 16 (also known as the oxygen group), has six valence electrons. It is in the same group as oxygen and sulfur. Oxygen has a higher ionization energy due to its smaller atomic radius and stronger electron-electron repulsion, while sulfur has a higher ionization energy due to its higher effective nuclear charge.

Selenium, being further down the group, has a larger atomic radius and experiences weaker electron-electron repulsion and lower effective nuclear charge. Consequently, it requires less energy to remove an electron, making it the element with the smallest first ionization energy among the options provided.

Therefore, selenium (Se) has the smallest first ionization energy among the elements listed.

Therefore, the correct answer is E.

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All you have to do is multiply 68 miles and 3.2 hours. It will give you the answer, 217.6 mph.

68x3.2=217.6 miles per hour.

Answer:

D) the high specific heat of water caused by hydrogen bonding

Explanation:

The balanced equation is \(\text{CH}_{4}+2\text{O}_{2} \longrightarrow \text{CO}_{2}+2\text{H}_{2}\text{O}\).

The correct balanced chemical equation is CH₄ +  2 O₂\(\rightarrow\) CO₂ + 2 H₂O.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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Answer:

Structur formulas are good for depicting polymers because they explain the properties and structure of the compound which empirical and molecular formulas cannot always represent.

Structural formulas describe the bonds shared by the elemental atom. They are good for depicting polymers as they describe the structure and the properties.

Polymers are said to be substances that are either natural or synthetic and are macromolecules made of various chains of monomers joined together.

The actual structure and arrangement of the atoms in the polymers are depicted by the structural formula. These were not explainable by the empirical, or molecular formulas.

The atoms involved and the linkage between them are described through the structures and allow us to know the certain properties of the monomers involved. It gives the idea of the chemical and physical properties.

Therefore, the structural formulas depict the polymer.

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Answer:

Kingdom

Explanation:

Out of all the choices, Kingdom is the most inclusive and least specific.

When the question asks for the most inclusive and least specific group, it is asking for the most broad group.

Also, you can just look at the left of the image. It basically shows you the answer.

Answer:

Atoms of sulfur = 9.60⋅g32.06⋅g⋅mol−1×6.022×1023⋅mol−1

Explanation:

because the units all cancel out, the answer is clearly a number, ≅2×1023 as required.

Answer:

volume= 3

Explanation:

D=m/v

2.7=8.1/v

2.7v=8.1

8.1/2.7= 3

8.1/3= 2.7 which is the density!

Answer:

3 mL

Explanation:

\(V = \frac{8.1 g}{3 mL} = 2.7 g/mL\)

A physical change will occur when boiling water, tea, sugar, and ice are combined to form sweet iced tea.

A physical change is a change affecting the form of a chemical substance, but not its chemical composition.

The characteristics of some physical changes are as follows:

According to this question, one makes a glass of refreshing sweet iced tea by combining boiling water, tea, sugar, and ice on a hot summer day. The resulting solution is an example of a mixture, which contains constituents that retain their individual identity.

This suggests that the change is a physical change because there is no formation of a new substance.

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Prediction is to nearness as non-contingent is to contingent.

Prediction refers to forecasting or estimating future events or outcomes. Nearness, in this context, may refer to the proximity or closeness of the prediction to the actual outcome. Non-contingent refers to something that is not dependent or conditional on other factors. Contingent, on the other hand, refers to something that is dependent or conditional on other factors.

So, in this comparison, it could be said that a prediction that is near or accurate would be considered non-contingent, while a prediction that is not accurate or is dependent on other factors would be considered contingent. It's important to note that this comparison is not absolute, as both prediction and non-contingent/contingent are broad concepts with many different contexts and nuances.

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Answer:

False

Explanation:

Water melting from ice into a liquid is not a chemical reaction or chemical change. It is merely a phase change from solid to liquid.

The melting of water from ice to liquid is never a chemical reaction.

Chemical reactions are reactions that involve the formation of new products from the reactants.

It is as opposed to physical changes in which substances just change their states and can be returned back to the original state with time.

The melting of ice to liquid water is a physical change. The water can be returned back to ice by a process known as freezing.

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By taking hydrogen ions, certain bases directly lower the H+ than OH- concentration. Other bases break down to create hydroxide ions, which indirectly lowers the H+ concentration.

H+ ion concentration is raised by an acid. A base is a chemical that, in an aqueous solution, produces hydroxide (OH-) ions, gives electrons, and receives protons. A donor of protons is an acid. A proton can enter a base. When dissolved in water, an acidic chemical compound produces a solution that has more H+ ion activity than clean water. A base is an aqueous material that releases hydroxide (OH-) ions, receives protons, or contributes electrons. A donor of protons is an acid. A base is a proton acceptor.

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Explanation:

A B C D isme koyi ans hain doond lo

We will follow the following formula in order to calculate percentage composition of x element :

Percentage coposition of X = (Molar Mass of X) /(Molar Mass of whole molecule )* 100

1.Percentage composition of hydrogen in HI ( M.mass HI = 1 + 126. = 127g/mol)

% of H in HI = Molar Mass of H / Molar Mass of whole molecule *100

= (1.008g/mol /127.99g/mol ) *100

= 0.78 %

2. Percentage composition of hydrogen in NH3 ( M.mass NH3= 14+3 = 17 g/mol)

% of H in NH3 = M.mass of hydrogen / M.mass of NH3*100

= (1.008g/mol )/17.031g/mol *100

= 0.059*100

=5.9 %

3. Percentage composition of hydrogen in COOH

% of H in COOH = M.mass of hydrogen / M.mass of COOH *100

= 1.008g/mol /45g/mol *100

= 0.024*100

= 2.24 %

Approximately 1.01 g of CsOH would need to be dissolved in 500.0 mL of water to produce a solution with a pH of 12.40.

To determine the mass of CsOH needed to produce a solution with a pH of 12.40, we need to use the relationship between pH, pOH, and concentration of hydroxide ions (OH-) in a solution.

First, we can calculate the pOH of the solution using the formula:
pOH = 14 - pH
pOH = 14 - 12.40
pOH = 1.60
Next, we can calculate the concentration of OH- ions using the formula:
pOH = -log[OH-]
1.60 = -log[OH-]
[OH-] = 0.0251 M
Since CsOH dissociates in water to produce one mole of OH- ions for every mole of CsOH, we can use the concentration of OH- ions to calculate the amount of CsOH needed:
0.0251 M CsOH x 0.5000 L = 0.0126 moles CsOH
Finally, we can calculate the mass of CsOH needed using its molar mass:
0.0126 moles CsOH x 80.10 g/mol = 1.01 g CsOH
Therefore, approximately 1.01 g of CsOH would need to be dissolved in 500.0 mL of water to produce a solution with a pH of 12.40.

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Answer:

Metallic bond, force that holds atoms together in a metallic substance. ... The atoms that the electrons leave behind become positive ions, and the interaction between such ions and valence electrons gives rise to the cohesive or binding force that holds the metallic crystal together.

Explanation:

Answer:

iron gets rusted as it is more reactive then aluminium and reacts faster with moisture in the air

Explanation:

Sodium chloride is white, crystalline solid at room temperature.

It is a compound whose components atoms are sodium and chlorine.

The atoms of the two elements combine chemically through an ionic bond. The sodium donates it valence electron to the chlorine atom.

Thus, sodium chloride is an ionic compound. It has a characteristic white appearance and crystalline structure.

The compound is a solid at room temperature. It has a melting point of 801 °C.

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The maximum safe operating temperature the engineer should recommend for this reaction is approximately 1063.77 degrees Celsius.

To calculate the maximum safe operating temperature, we need to consider the dimensions of the vessel, the maximum safe pressure, and the amount of gas inside.

First, let's convert the dimensions of the vessel from centimeters to meters:

Width = 48.0 cm = 0.48 m

Height = 57.6 cm = 0.576 m

Next, we need to calculate the volume of the vessel:

Volume = π * (radius)^2 * height

The radius of the vessel can be calculated as half of the width:

Radius = 0.48 m / 2 = 0.24 m

Volume = π * (0.24 m)^2 * 0.576 m

Volume ≈ 0.099 m^3

Now, we can use the ideal gas law to determine the maximum safe operating temperature. The ideal gas law is given by:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

Rearranging the equation to solve for T:

T = (PV) / (nR)

To calculate the number of moles, we can use the molar mass of carbon dioxide (CO2):

Molar mass of CO2 = 12.01 g/mol (for carbon) + 2 * 16.00 g/mol (for oxygen)

Molar mass of CO2 ≈ 44.01 g/mol

Converting the mass of carbon dioxide from kilograms to grams:

Mass of CO2 = 2.45 kg * 1000 g/kg

Mass of CO2 = 2450 g

Now, we can calculate the number of moles:

Number of moles = Mass of CO2 / Molar mass of CO2

Number of moles = 2450 g / 44.01 g/mol

Number of moles ≈ 55.67 mol

The gas constant R is approximately 8.314 J/(mol·K).

Now, we can substitute the values into the equation:

T = (3.40 MPa * 0.099 m^3) / (55.67 mol * 8.314 J/(mol·K))

T ≈ 1063.77 K

Converting from Kelvin to Celsius:

T ≈ 1063.77 °C

The maximum safe operating temperature that the engineer should recommend for this reaction is approximately 1063.77 degrees Celsius.

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Photosynthesis removes CO2 and animal activities, burning fossil fuels and burning wood add CO2.

Why is CO2 needed?

The main greenhouse gas that helps keep our atmosphere warm is carbon dioxide. Without them, our earth would be uninhabitable. However, the rise in average global temperature due to rising levels of CO2 in our atmosphere is affecting other aspects of Earth's climate. Carbon dioxide is required for the internal respiration of the human body. Internal respiration is the process of removing carbon dioxide and delivering oxygen to body tissues.

The pH value of the blood is protected by the vital carbon dioxide. Therefore, only plants excrete CO2.

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The type of fron created is a "warm" front.

Answer:Newton’s first law

Explanation:

Answer:

1. Latitude

2. Ocean currents

Explanation:

From the question we know that 12 - 11.70 = 0.3  so 0.3 / 12 = 0.025 therefore Simon's percent error is 2.5%.

Percent error compares an estimate to an accurate value and expresses the difference among them as a percent. This statistic lets analysts recognize the scale of the mistake relative to the true cost. it's also referred to as percentage error as well as % mistakes.

Percentage errors Calculation Steps :

Percentage error tells you the way huge your mistakes are when you degree something in an experiment. Smaller values suggest that you are close to the accepted or actual value. for instance, a 1% blunder means that you obtain very near the accepted value, whilst 45% means that you were pretty a long way off from the real value.

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Answer:

3.0grams/ml

density is a ratio of mass to volume

that implies 30grams/10ml

you can get a different answer depending on the unit