4NH3 +5O2→4NO+6H2O (Run at constant temperature and pressure)

If 3.20 liters of ammonia gas are reacted, how many liters of oxygen gas are consumed?

a
3.20 L O2

b
4.00 L O2

c
2.56 L O2

During the reaction, two moles of potassium chlorate are converted into two moles of potassium chloride and three moles of oxygen.

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One mole or 180 g of C₆H₁₂O₆ produces 6 moles or 264 g of CO₂. Then.,  88.62 g of the reactant will produce 129 g of CO₂ corresponds to 2.9 moles.

In cellular respiration process of plants plants consume oxygen to convert glucose into carbon dioxide and water as written in the reaction below:

[tex]\rm C_{6}H_{12}O_{16} + 6O_{2} \rightarrow 6CO_{2} + 6H_{2}O[/tex]

As per this balanced chemical equation, one mole of C₆H₁₂O₆ produces 6 moles of carbon dioxide.

Molar mass of  C₆H₁₂O₆ = 180 g/mol

molar mass of CO₂ = 44 g.

mass of 6 CO₂ = 264 g.

Then, mass of CO₂ produced by 88.62 g of glucose is calculated as follows:

(88.62 ×264)/180 = 129.9 g.

No.of moles in 129 g  = 129 /44 = 2.9 moles.

Therefore, the number of moles of CO₂ produced is 2.9 moles.

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the maximum amount of Fe that could be produced is 2 moles for the product if reactants Fe2O3 Al2O3

The maximum amount of Fe that was produced during the experiment can be determined by using the balanced equation of the reaction.

Fe2O3 + 2Al -> 2Fe + Al2O3

From the information given, we know that 3 moles of Fe2O3 and 5 moles of Al were used in the reaction. By using the stoichiometry of the reaction, we can determine the maximum amount of Fe that could be produced.

For every 3 moles of Fe2O3 that reacts, 2 moles of Fe are produced.

So the maximum amount of Fe that could be produced is 2 moles.

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The complete question is:

When a reaction was performed experimentally in the laboratory, the following data was collected.

Products of Reactants

Fe2O3 Al2O3 Fe 3 moles 5 moles?

Calculate the maximum amount of Fe produced during the experiment. Explain how you arrived at this figure.

If the actual yield of the reaction was 25 % rather than 100 % , then the number of molecules of O2 present after the reaction was over would be 1 molecules.

The limiting reactant is the reactant that runs out first and determines the theoretical yield of the reaction. In this case, NO is the limiting reactant.

To calculate the theoretical yield of O2, we need to know the molar ratio of O2 to NO2 in the balanced chemical equation. If 8 molecules of NO2 are produced, we can use the balanced equation to determine the number of molecules of O2 that should be produced.

2NO + O2 -> 2NO2

We know that for every 2 molecules of NO, 1 molecule of O2 is consumed and 2 molecules of NO2 are produced.

Therefore, if 8 molecules of NO2 are produced, the number of O2 that should be produced is:

8 molecules NO2 / 2 = 4 molecules O2

If the actual yield of the reaction is 25% instead of 100%, we can calculate the actual yield of O2 by multiplying the theoretical yield by the percentage yield:

4 molecules O2 * 25% = 1 molecule O2

So, if the actual yield of the reaction is 25% instead of 100%, then 1 molecule of O2 would be present after the reaction is over.

"

Complete question

If the actual yield of the reaction was 75% instead of 100%, how many molecules of O2 would be present after the reaction is over? The# of No2 molecules is 8 if it goes through completion and NO is the limiting reactant.

"

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The methyl carbon from acetyl-CoA and the carbonyl carbon from oxaloacetate become chemically equivalent at the point of the citric acid cycle where the enzyme citrate synthase catalyzes the condensation of acetyl-CoA and oxaloacetate to form citrate.

The citric acid cycle, also known as the Krebs cycle, is a series of chemical reactions that occurs in the mitochondria of cells. One of the key steps in this cycle is the condensation of acetyl-CoA and oxaloacetate to form citrate. This reaction is catalyzed by the enzyme citrate synthase. During this reaction, the carbonyl carbon of oxaloacetate and the methyl carbon of acetyl-CoA are chemically equivalent in the molecule of citrate. This reaction marks the starting point of citric acid cycle and forms the first intermediate of the citric acid cycle.

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Answer: B a heterogeneous mixture

Explanation:

Give names to equations 1, 2, and 3.Equation 3.2 N2O (g) N2 (g) + 0.5 O2 (g) H = -81.6 kJEquation 2: NO (g) + 1/2 O2 (g) + (1/2) NO2 (g) = +56.55 kJ

Equation 1 states that N2 (g), O2 (g), 2NO (g), and H = +180.7 kJ.

See Equation of state for cosmological applications of this (cosmology). See Optimum control General technique for further information on how this idea is used in optimal control theory.An equation of state is a thermodynamic formula used in physics, chemistry, andthermodynamics to describe the state of matter under a particular set of physical parameters, such as pressure, volume, temperature, or internal energy.[1] The Helmholtz free energy is used to formulate the majority of current equations of state. The characteristics of pure substances and mixtures in their liquid, gaseous, and solid forms as well as the state of matter

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To calculate the number of moles- n = 8.33 g NH3 / 17.03 g/mol = 0.49 mol

Now, we can calculate the heat energy absorbed-

q = n * ΔH

q = 0.49 mol * (-46.19 kJ/mol) = -22.5 kJ.

The heat energy absorbed or released by the reaction of 8.33 g of NH3 is -22.5 kJ.

Heat energy is the result of the motion of tiny particles called atoms, molecules or ions. Heat energy can be repositioned from one object to another. The transfer or flow due to the disparity in temperature between the two objects is called heat.

The different types of Heat Energy are- radiation, conduction and convection.

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The superalloys divide into three basic groups, according to the base metal used in the alloy. Name the three groups: (1) iron-based alloys, (2) nickel-based alloys,and (3) cobalt-based alloys.

Superalloy materials are materials that have been developed to have the ability to maintain their strength at high temperatures (> 650oC) for a long time. A good combination of high strength and good ductility at low temperatures as well as good surface stability, surface stability means corrosion resistance, the formation of Cr2O3 and Al2O3 will improve surface stability. Superalloys originate from group VIIIB elements and generally consist of various combinations of Fe, Ni, Co, and Cr.

There are also alloying elements in smaller amounts, including W, Mo, Ta, Nb, Ti, Al, and V. Alloys in small amounts play a role in increasing strength by:

1.     Mechanism of solid solution strengthening (W, Mo, Ti),

2.      Forming carbides (W, Mo, Nb, Ta, Ti, V),

3. Precipitation strengthening (Al and Ti).

The reinforcement mechanism in superalloys is also controlled by means of:

1. Minimizing the formation of brittle phases: sigma phases, chi phases,

2. Controlling the carbide that is formed (so that it is not too brittle),

3. Controlling the grain size (so that the strength does not decrease).

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Based on the observed properties of water and rubbing alcohol, the properties of the unknown substance are as follows;

The properties of water are as follows:

The properties of rubbing alcohol are as follows:

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Complete question:

Part A

Water and rubbing alcohol have distinct properties and will react differently with the same substance. Observe these properties of water and rubbing alcohol: color, smell, and ability to dissolve the salt. Record your observations in the table. To observe the solubility of salt in the liquid, put a one-quarter teaspoon of salt into each container and stir. You may weigh out 1.5 g of salt on the electronic balance if you don’t have a one-quarter teaspoon measure.

Part B

Now observe the properties of the liquid in the container labeled unknown. Record the properties of the unknown substance in the table.

The number of moles of CO2 formed from the reaction would be 50 moles.

The reaction has to do with the combustion reaction of ethyne in oxygen to form carbon dioxide and water. From the balanced equation of the reaction below:

2C2H2(g) + 5O2(g) ==> 4CO2(g) + 2H2O(g)

The mole ratio of C2H2 to CO2 is 1:2. This means for every 1 mole of C2H2 that burns in adequate oxygen, 2 moles of CO2 will be produced.

Using this established mole ratio, the number of moles of CO2 that will be formed from 25.0 moles of C2H2 would be:

1 mole C2H2 = 2 moles CO2

25 moles C2H2 = 25x2/1

                          = 50 moles CO2

In other words, the number of moles of CO2 that will be formed from 25.0 moles of C2H2 is 50 moles.

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how many moles of CO2 are formed from 25.0 moles C2H2

2C2H2(g) + 5O2(g) ==> 4CO2(g) + 2H2O(g)

The 5 pairs of the elements that have the similar chemical reactivity are :F and Br, Sr and Ca, P and Sb, O and S, Li and Rb.

1) The Fluorine F and Bromine Br are elements are from the halogen family. They are highly electronegative and exhibit similar reactivity.

2) Sr and Ca are belongs to alkaline earth metals. They are found in group II. Their oxidation state is +2.

3) P and Sb are belongs to the group 5 of the periodic table and they have the some similar chemical reactivity.

4) O and S are both nonmetals and they can be found in the group 6 with -2 oxidation state.

5) Li and Rb are belongs to the alkali metals, they form ionic bonds with the halogen family.

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One sodium ion is required to form an ionic compound with one chromate ion, the chemical formula is NaCrO4 .

Ionic compounds are formed when positively charged ions (cations) and negatively charged ions (anions) come together in a ratio that results in a neutral overall charge.

In this case, the chromate ion (CrO4²⁻) has a 2- charge, meaning it needs two positive charges to balance it out and form a neutral compound. Sodium (Na+) is a monatomic cation with a 1+ charge, so one sodium ion is required to balance the charge of one chromate ion.

The chemical formula for this ionic compound is NaCrO4. It's important to note that the ratio of cations to anions in an ionic compound is not always a 1:1 ratio, it can also be 2:1, 3:2 and so on.

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The percent yield of carbon dioxide if 126.1 g is collected when 372.7 g of marble reacts is 76.9 %

The reaction is given as :

CaCO₃  +   2HCl   ----->   CaCl₂  +  H₂O  +   CO₂

The mass of carbon dioxide = 126.1 g

The mass of the calcium carbonate = 372.7 g

The moles of calcium carbonate  = mass / molar mass

                                                 = 372.7 / 100

                                                 = 3.727 mol

1 mole of CaCO₃ produces 1 mole CO₂

Moles CO₂ = 3.727 mol

The mass of CO₂ = moles × molar mass

                             =  3.727 × 44

                             = 163.98 g

The percent yield of carbon dioxide = ( 126.1 / 163.98 ) × 100 %

                                                             = 76.9 %

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At 303 K, 56% of the SO2Cl2 in a 2.00 mol flask of SO2Cl2 dissolves into SO2 and Cl2. At this temperature of 303 K, the Kc for this reaction is 1.58.

The decomposition of SO2Cl2 to SO2 and Cl2 is a reversible reaction. The equation for the reaction is:

SO2Cl2(g) <==> SO2(g) + Cl2(g)

We know that 56% of the SO2Cl2 has decomposed, so we can assume that the equilibrium constant, Kc, is less than 1. To calculate Kc, we will use the equilibrium concentrations of the reactants and products.

We know that the initial concentration of SO2Cl2 is 2.00 mol/2.00 L = 1.00 M, and that 56% of the SO2Cl2 has decomposed, so the equilibrium concentration of SO2Cl2 is 1.00 M * 0.44 = 0.44 M

The equilibrium concentrations of SO2 and Cl2 can be calculated by assuming that they are produced in equal amounts, so the equilibrium concentration of each will be 0.56 M (0.56 mol/L)

Kc is defined as the concentration of products raised to the power of their stoichiometric coefficients, divided by the concentration of reactants raised to the power of their stoichiometric coefficients.

Kc = [SO2][Cl2] / [SO2Cl2]^2

Kc = (0.56 M)^2 / (0.44 M) = 1.58

So the Kc for this reaction at 303 K is 1.58

It's worth noting that equilibrium constant, Kc, is not a constant but a function of temperature, concentration and pressure. The value of Kc for a reaction is different at different temperatures, pressures, etc.

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If purple flowers are dominant in a plant and white flowers are recessive in that plant, then when purple-flowered plants with two dominant genes are mated with white-flowered plants with two recessive genes, the first generation of offspring should have 100% purple flowers. Therefore, option D is correct.

In genetics, dominance occurs when one variant of a gene on a chromosome masks or overrides the effect of another variant of the same gene on the opposite copy of the chromosome.

The first variant is called dominant, while the second is called recessive. When there is dominance, it is always expressed. When no dominant genes are present, recessive genes are expressed.

Purple-flowered plants with two dominant genes should produce 100% purple flowers in the first generation when mated with white-flowered plants with two recessive genes.

The attached Punnett square shows the above combination.

Thus, option D is correct.

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Answer:

Temperature: 0 degrees Celsius (273.15 degrees Kelvin or 32 degrees Fahrenheit) Pressure: 1 atm (101.325 kilopascal or 760 Torr).

Explanation:

Sea Arches are formed when a cave continues to be eroded and expanded until it cuts through a headland.

A sea cave forms when a sea arch pursues to be eroded and widened until the rock becomes too weak to carry the roof of the sea cave and collapses into the sea. Caves are devised by the dissolution of limestone. Rainwater collects carbon dioxide from the air and as it percolates through the soil, which rotates into a weak acid.

Sea caves occur on almost every precipice headland or coast where the waves break straight on a rock cliff and are formed Sea caves by mechanical erosion rather than the chemical solution procedure that is responsible for the majority of inland caves.

So we can conclude that Sea caves or littoral caves are formed fundamentally from erosion caused by waves

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The Kastle-Meyer test is a presumptive test for blood, which uses the enzyme peroxidase to catalyze a reaction between hydrogen peroxide and a substrate called phenolphthalein, producing a pink colour.

The Kastle-Meyer test is based on the presence of peroxidase enzymes found in many plants, including potatoes, beets, and horseradish. These enzymes catalyze the oxidation of phenolphthalein, the indicator used in the Kastle-Meyer test, producing pink colour.

This is why these vegetables can produce a positive reaction even though no blood is present. It is important to note that this test is not specific for blood and should not be used as the sole evidence for the presence of blood in a sample.

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The fundamental frequency of sound in helium if the pipe is filled with it at the same temperature will be 766.13 Hertz.

A certain organ pipe which is open at both the ends, produces a fundamental frequency equal to 285 Hz in air. It can be considered that the length of the pipe is L. Its wavelength will be represented as:

λ = 2L -- (eq 1)

The frequency of sound will be given as

f = v / λ, where f is the frequency, v is the velocity of sound in air and λ is the wavelength. Replacing the value of λ from equation 1.

285 = 331.29/ 2L

L = 0.5812 m

Let us assume that v' is the velocity of sound in helium. Then,

v/v' = [tex]\sqrt{m'}[/tex]/[tex]\sqrt{m}[/tex] , where, m is the molar mass of air and m' is the molar mass of helium.

v' = 331.29/ 0.372

v' = 890.56 m/s

To calculate the fundamental frequency of sound is helium,

f' = v' / λ

f' = 890.56 / 2 × 0.5812

f' = 766.13 hertz

So, the fundamental frequency of sound is helium is 766.13 hertz.

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The BOF method can also get rid of other pollutants in addition to carbon.

The open-hearth furnace (OHF) transforms a charge of scrap and liquid blast-furnace iron into liquid steel using the heat produced by the combustion of gaseous or liquid fuels. By blowing pure oxygen into a bath of molten blast-furnace iron and scrap, the basic oxygen process (BOP) creates steel.

Oxygen and a metal react to generate metallic oxide. Oxygen and several metals interact to generate metal oxides. Sodium and potassium are soft metals that are simple to cut, exposing a surface that is initially shiny but quickly becomes dull.

In addition to carbon, additional contaminants can also be eliminated using the BOF technique. Sulfur (S) and phosphorus (P) are two components with significant roles in the production and refinement of steel (P).

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Calcium nitrate tetrahydrate is written as Ca(NO3)2.4H2O, which means that it contains one mole of calcium nitrate (Ca(NO3)2) and four moles of water (4H2O).

Since we know that the compound contains 0.44 moles of calcium nitrate, we can use the coefficient of the water in the chemical formula to find out how many moles of water the compound contains. The coefficient of water in the chemical formula is 4, so we can use it to calculate the number of moles of water in the compound:

0.44 moles of calcium nitrate x 4 moles of water/1 mole of calcium nitrate = 1.76 moles of water.

So the compound contains 1.76 moles of water.

Answer:

Explanation:

Dipole-dipole forces or interactions exist between polar molecules. Some regions on a molecule have more electrons in a certain region, while others have fewer electrons in certain regions.

Atoms that are more electronegative than the rest of the molecule pull electrons closer. This creates a partial positive charge where electrons are not as close to one atom, and a partial negative charge where the electrons are closer to the other atom in the molecule. Water is a classic example of a polar molecule. Oxygen is quite electronegative so it pulls the shared electrons closer to itself--this creates a partial negative charge on oxygen. Hydrogen is not that electronegative so it does not pull the electrons close to itself--this creates a partial positive charge.

A dipole is created. The positive end of the dipole attracts the negative end of another molecule with a dipole.

The type of moon that Chelsea was seeing is full moon (option A).

The moon is any natural satellite of a planet. It is defined to be a celestial body that makes an orbit around a planet, including the eight major planets, dwarf planets, and minor planets.

The eight phases of the moon are as follows;

According to this question, Chelsea went camping for one week. Each night she saw the moon and noticed that the moon seemed to be getting larger.

It can be said that Chelsea is seeing the full moon.

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The empirical formula of bismuth chloride is Bi1 Cl8.9.The empirical formula of a compound is the simplest ratio of the atoms in the compound.

To determine the empirical formula of bismuth chloride, we need to determine the number of moles of each element present in the compound. First, we can find the number of moles of bismuth present in the sample by dividing the mass of the sample (0.687 g) by the molar mass of bismuth (208.98 g/mol): 0.687 g / 208.98 g/mol = 0.00327 mol .Next, we can find the number of moles of chlorine present in the compound by dividing the mass of the bismuth chloride obtained (1.032 g) by the molar mass of chlorine (35.45 g/mol): 1.032 g / 35.45 g/mol = 0.029 mol. To find the ratio of the atoms in the compound, we divide the number of moles of each element by the smallest number of moles calculated:0.00327 mol / 0.00327 mol = 1 (Bismuth) 0.029 mol / 0.00327 mol = 8.9 (Chlorine)Therefore, the empirical formula of bismuth chloride is Bi1 Cl8.9.

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Articles published by universities or  government agencies. 3. Article published in 2015 and updated a research week ago.

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A chemical compound is a substance formed by the union of two or more chemical elements in a fixed ratio, the union being a chemical bond.

A pure substance is a substance that are made up of only one kind of particle and have a fixed or constant structure. Pure substances are further classified as elements and compounds.

A molecule is the smallest particle of a specific element or compound that retains the chemical properties of that element or compound; two or more atoms held together by chemical bonds.

A mixture is a compound made up of two or more chemical components that are not chemically linked together. This means that a mixture can be made of elements, compounds etc. but not the other way round.

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Resulting pH = 7.4

Using Henderson Hasselbalch equation,

Since pH = pKa + log([A]/[HA])

8 = 7.4 + log([A]/[HA]), hence [A]/[HA] = 4   .....(i)

0.1 L = 0.1 mole (moles/L), hence [A] +[HA] = 0.1   .......(ii)

using eqn (i) and (ii), [A] = 0.08 moles and [HA] = 0.02 moles

After adding 30 ml of HCL, 0.03 L = 0.03 moles (mole/L)

Since [A] reduces and [HA] increases,

[A] = 0.08 - 0.03 = 0.05 and [HA] = 0.02 + 0.03 = 0.05

So new pH of solution becomes,

pH = 7.4 + log(0.05/0.05) = 7.4

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We must take into account the quantity of electrons exchanged in order to balance this redox reaction. Manganese (Mn) undergoes a shift in oxidation state from 0 (in the solid form) to +2.

(in the aqueous state). This indicates that during the process, Mn loses two electrons. Chromium (Cr) goes from +3 (in the aqueous state) to 0 in terms of oxidation state (in the solid state). This indicates that throughout the process, Cr gains 3 electrons. Equal to the amount of electrons that Cr obtains, Mn loses the same number of electrons. Consequently, the following is the balanced equation for this reaction: 2Mn2+(aq) + 3Cr = 2Mn(s) + 3Cr3+(aq) (s) In this balanced equation, this reaction involves the exchange of two electrons.We must take into account the quantity of electrons exchanged in order to balance this redox reaction. Manganese (Mn) undergoes a shift in oxidation state from 0 (in the solid form) to +2.

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