Calculate the reaction n2 3h2 ⇌ 2nh3 reaches equilibrium with concentrations of [n2] = 0.04, [h2] = 0.07, and [nh3] = 0.02.what is the equilibrium constant for this reaction at this temperature?

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The balanced reaction that shows incomplete combustion is  2C4H10 + 5O2 → 4CO + 6H2O.

option D.

The balanced equation for incomplete combustion involves a reactant, usually a hydrocarbon fuel, reacting with a limited supply of oxygen to produce carbon monoxide (CO) instead of carbon dioxide (CO2) and water (H2O).

Out of the options given, the balanced equation that shows incomplete combustion is:

D. 2C4H10 + 5O2 → 4CO + 6H2O

This equation shows incomplete combustion because it produces carbon monoxide (CO) instead of carbon dioxide (CO2). The equation is balanced because there are equal numbers of atoms of each element on both the reactant and product sides of the equation.

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Answer:

Because both the zones have different compositions.

Explanation:

The continental crust is composed of mainly graphite whereas the oceanic crust is made up of basalt. The oceanic plates are thinner than the continental plates. Also the oceanic plates are much denser as compared to the continental plates. Now the continental plates at the convergent boundary gained thickness as they are pushed upward. These plates or zones are of different composition an densities and so when they collide different features can be seen at the two conversion zones.

Answer:

Chemical because water + metal = rust.

Explanation:

A new substance was formed.

Answer:

A is the correct answer

Answer:

A. The electrons farthest from the nucleus of the atom

Explanation:

Answer

The formula form of Manganese (IV) perbromate is

Explanation

The formula of Manganese is Mn

The formula for perbromate is BrO₄⁻

Oxidation number of Manganese (IV) = +4, That is Manganese (IV) is Mn⁺⁴

Therefore, multiply the charge of manganese by 1 and perchlorate by 4 t

A. The number of moles of water that were absorbed is 0.094 mole

B. The percentage of water in the hydrate is 25.4%

The number of mole water absorbed can be obtain as follow:

Mole = mass / molar mass

Mole of water = 1.70 / 18

Mole of water = 0.094 mole

We can obtain the percentage of water as follow:

Percentage of water = (mass of of water / mass of hydrate) × 100

Percentage of water = (1.7 / 6.7) × 100

Percentage of water = 25.4%

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Answer:

Option A.

Explanation:

Balanced equation is:

2SO₂ (g) + O₂(g)  →  2SO₃(g)

First of all, we need to determine the limiting reagent. We convert mass to moles:

544.5 g . 1 mol / 64.06g = 8.5 moles of sulfur dioxide

160 g . 1mol / 32g = 5 moles of oxygen

Ratio is 1:2. 1 mol of oxygen needs 2 moles of sulfur dioxide

5 moles of oxygen may react to (5 . 2) /1 = 10 moles of SO₂

We only have 8.5 moles of SO₂ but we need 10 moles. In conclussion limiting reagent is SO₂.

Ratio is 2:2. 2 moles of SO₂ can prdouce 2 moles of SO₃

Then 8.5 moles of SO₂  must produce 3 moles of SO₃

We convert mass to moles, to determine the theoretical yield (100 % yield reaction) → 8.5 mol . 80.06 g /mol = 680.51 g

Formula for percent yield is: (Produced yield / Theoretical yield) . 100

(382 g / 680.51g) . 100 = 56.1 %

Answer:

thermal energy is used to heat water, which is pumped through a system of pipes and radiators. a warm-air heating system burns fuel in a furnace to produce thermal energy.

Option b, which is 0.50 m glucose.  Solution with the lowest freezing point is the one with the lowest molality, which is the non-electrolyte glucose in option b. The explanation is that non-electrolytes dissociate less in water, resulting in a lower freezing point than electrolytes.

A solution's freezing point depression is directly proportional to its molality, which is the number of moles of solute per kilogram of solvent.

Glucose, being a non-electrolyte, dissociates less in water, resulting in a lower freezing point than electrolytes. In comparison to glucose, all of the other options are electrolytes, which split into ions and increase the solution's molality, causing a greater decrease in the freezing point.

Hence, the solution with the lowest freezing point is the one with the lowest molality, which is the non-electrolyte glucose in option b. The explanation is that non-electrolytes dissociate less in water, resulting in a lower freezing point than electrolytes.

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Answer:

Explained below

Explanation:

In a decomposition reaction, a substance (commonly a molecule) descomposes in the elements that originally formed it.

The standard formula is:

AB > A + B

In fact, is the opposite of a synthesis reaction.

An example of decomposition reaction is:

H2O > 2H + O

Answer: Ionic attractions

Explanation:

Ionic bonding is a type of chemical bond that involves the electrostatic attraction between oppositely charged ions.

d. The electron-pair arrangement is tetrahedral, the molecular geometry is trigonal-pyramidal.

VSEPR theory (Valence Shell Electron Pair Repulsion theory) is a model used to predict the shapes of molecules based on the arrangement of valence electrons around the central atom. The theory assumes that electron pairs (both bonding and non-bonding) in the valence shell of the central atom repel each other and that the shape of the molecule is determined by the arrangement of the electron pairs that minimize repulsions.

In the case of tetrahydroborate ion (BH4-), the central boron atom has four valence electrons and is surrounded by four hydrogen atoms. The electron-pair arrangement is tetrahedral because there are four electron pairs around the central atom. However, one of the electron pairs is a lone pair, while the other three are bonding pairs.

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The work done by the gas is -0.0124 L·atm and the heat absorbed from the thermostat is also -0.0124 L·atm.

To find the work done by the gas and the heat absorbed from the thermostat, we can use the first law of thermodynamics, which states that the change in internal energy of a system is equal to the heat absorbed by the system minus the work done by the system.

First, let's calculate the change in volume. The gas is allowed to double in volume, so the final volume will be 2 times the initial volume. The initial volume is 0.0124 dm^3, so the final volume will be 2 * 0.0124 dm^3 = 0.0248 dm^3.

Next, we need to calculate the work done by the gas. The work done by a gas expanding or contracting against a constant external pressure can be calculated using the equation: work = -P * ΔV, where P is the constant external pressure and ΔV is the change in volume.

In this case, the external pressure is 1.0 atm and the change in volume is (0.0248 dm^3 - 0.0124 dm^3) = 0.0124 dm^3. So, the work done by the gas is: work = -1.0 atm * 0.0124 dm^3 = -0.0124 L·atm.

To find the heat absorbed from the thermostat, we can rearrange the first law of thermodynamics equation: heat = change in internal energy + work. Since the problem states that the gas is an ideal gas, we can assume that the internal energy change is only due to changes in temperature, which means the change in internal energy is zero.

Therefore, the heat absorbed from the thermostat is equal to the work done by the gas: heat = -0.0124 L·atm.


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Explanation:

Because the panthers live in the southeastern region of the United states they have increased in population in that region. They have been able to gain more food and have adapted more to there environments. Which allows to increase and reproduce more. That is why the Panthers in the southeastern United states have increased In population.     I hope this works for you and that it helps. I don't mind helping someone who has a question! From, me.

A population of panthers lives in the southeastern United States. Over 50 years, the size of the panther population in the region increased. More panthers were born than died explains the increase in the size of the panther population.

The jaguar, also known as the panther, tigre, or onza, is the world's largest and most powerful cat. Human activities endanger this cat, as they do the Florida panther (Puma concolor).

Because the anteater population will have fewer energy storage molecules available due to the smaller ant population, the anteater population will reproduce less.

Panthers can be found in the southeastern United States. The region's panther population has grown over the last 50 years. Because no animal eats panthers, the panther population is always growing.

Thus, More panthers were born than died explains the increase in the size of the panther population.

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Answer: a solution where the solvent is water

Explanation: solute ions which are known as the dissolvable ions and molecules are surrounded by water molecules and then get incorporated into the bonding network of water

The Ca(OH)2 solution's Ksp value is 2.14 10^-5. when 1.3 g of calcium hydroxide (Ca(OH)2) per litre of water dissolves in the solution. An inorganic substance is calcium hydroxide, often known as slaked lime.

Has the chemical composition Ca(OH)2 called as  calcium hydroxide. When quicklime (calcium oxide) and water are combined or slaked, a colourless crystal or white powder is created. It goes by a variety of names, such as hydrated lime, caustic lime, and builders' lime. With the chemical formula B3H6N3, borazine is a polar inorganic molecule. This cyclic compound alternates between three BH units and three NH units. The chemical is similar structurally and isoelectronically to benzene. Due to this, borazine is frequently called "inorganic benzene".

Ksp = (ca+2) (oh-)

Ksp = (5) (25^2)

Ksp equals 4*(0.0175)3 Ksp equals 2.14 10-5

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Answer:

The water tastes sweet, and it usually appears to be cloudy or not clear.

Explanation:

If nothing dissolves into the water, then it should be clear.

Answer:You can tell if the sugar is still there by boiling off the water and leaving the sugar behind in the container. Sugar is a solid, and therefore cannot evaporate, so when the water reaches boiling point, it will evaporate at a quicker rate than before (water evaporates at any temperature in liquid form; just not enough to be noticeable) and leave the container to become water vapour

Explanation: If you stir a spoonful of sugar into hot water, the sugar will dissolve in the hot water. When sugar or another substance is dissolved in water, it disappears from view and forms a homogeneous mixture with the water, also called a solution.

The equilibrium constant of the reaction from the calculation that has been done is 0.154

The concentrations (or partial pressures) of reactants and products in chemical equilibrium for a specific chemical reaction are related by the equilibrium constant (K), a mathematical equation. It quantifies the degree to which an equilibrium has been reached in a reaction.

We have the equation of the reaction as;

A(g) + B(g) ⇔C(g)

Thus;

Keq = 45.83/11.23 * 26.50

Keq = 0.154

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It's important to know that the reaction must have the total mass involved before and after due to the law of conservation of mass. This means that the total mass number of the left side of the reaction must be equal to the right side. So, we have the following

Notice that 235 is the mass number of U, 1 is the mass number of the neutron, X represents the mass number of the unknown element, 141 represents the mass number of Ba, and 3 represents the mass number of three neutrons. This means X should have a mass number of 92, which is the element Kr.

Therefore, the mass number is 92 and the chemical symbol is Kr.

The correct answer is Carbon Monoxide (CO). When organic matter is burned with insufficient oxygen, it leads to incomplete combustion and the production of various gases, including carbon monoxide. Carbon monoxide is a colorless, odorless gas that is extremely poisonous and can be fatal in high concentrations.Carbon dioxide (CO2) is a product of complete combustion and is not produced when there is insufficient oxygen.Benzene is a hydrocarbon compound composed of six carbon atoms and six hydrogen atoms, and it is not produced from combustion.Methane (CH4) is a hydrocarbon compound composed of one carbon atom and four hydrogen atoms, and it is not produced from combustion.Mercury is a metallic element and is not related to combustion.

The balanced chemical equations for the given reactions are:

16Ag + S₈  →  8Ag₂S

2 Al + 3 Br₂  →  2 AlBr₃

2 KClO₃  →  2KCl  + 3 O₂

CH₄  + O₂  →  CO₂   + 2 H₂O

2Al  + 3 O₂  → Al₂O₃

2 H₂O₂  → 2 H₂O   + 2 O₂

A balanced equation can be defined as an equation in which the number of atoms of every element involved in the reaction is equal on either side of the chemical equation.

The law of conservation of matter has to be obeyed by a balancing of a chemical equation.

By following the law of conservation of matter, the total mass of the elements of reactants will be equal to the total mass of products in a balanced chemical equation.

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If the student measures the density of the aluminum as 2. 87 g/mL and the actual value is the 2.69 g/mL,  the student's % error is 6.6 %.

The measures density of the aluminum  = 2.87 g/mL

The actual density of the aluminum = 2.69 g/mL

The expression of the percent error is as follows :

% error = (|actual value - measured value | / actual value ) × 100 %

% error = (|2.87 - 2.69 | / 2.69 ) × 100 %

% error = 0.066 × 100 %

% error  = 6.6 %

Thus, the percent error is 6.6 %.

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Answer:

A

Explanation:

RMM of ca(c2h302)2=158

%Ca= 40/158×100=25.3

%C=48/158×100=30.3

%H=6/158×100=3.7

%O=64/158×100=40.5

Answer:

a) 25.3% Ca, 30.4% C, 3.8% H, 40.5% O

Explanation:

Molar mass of Ca(C₂H₃O₂)₂  = 158.160 g/mol

percent composition:

Ca = (40 /158.160 ) × 100

Ca = 25.3%

C = (48 /158.160 ) × 100

C = 30.4%

H = (6 /158.160 ) × 100

H = 3.8%

O = (64 /158.160 ) × 100

O = 40.5%

40.5% + 3.8% + 30.4% + 25.3% = 100%

It means 1st option is correct.

When a beam of light is exposed into a dark room at 80 degrees Celsius, no significant physical changes are observed in the beam of light itself as Heat causes the atoms in a material to vibrate and emit light.

However, the temperature of the air in the room will increase due to the thermal energy carried by the light beam, which will cause the air molecules to vibrate more rapidly and thus increase their temperature. The color of the light may appear different due to the temperature of the air in the room. As the air gets hotter, the density of the air decreases, and the refractive index of air changes. This will cause the light to bend and make objects appear slightly different than they would in cooler air. Additionally, at higher temperatures, some materials may start to emit light due to incandescence, where heat causes the atoms in a material to vibrate and emit light.

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Helium noble gas electron structures do the atoms in a molecule of hydrogen chloride attain

Noble gas any of a group of rare gases that include helium, neon, argon, krypton, xenon, and usually radon and that exhibit great stability and extremely low reaction rates

The reason that the two chlorine atoms stick together is that the shared pair of electrons is attracted to the nucleus of both chlorine atoms and hydrogen atoms only need two electrons in their outer level to reach the noble gas structure of helium

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500 g of fluorine gas at 5.00 atm and 735 torr occupies a volume of approximately 4.97 liters.

To solve this problem, we can use the Ideal Gas Law, which states:

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.

To find the volume of fluorine gas, we need to rearrange the Ideal Gas Law equation to solve for V:

V = (nRT)/P

We are given the pressure (P = 735 torr), the mass (m = 500 g), and the temperature (T = 5.00 atm). However, we need to find the number of moles of fluorine gas in order to use the Ideal Gas Law.

We can use the molar mass of fluorine (F2) to convert from grams to moles:

molar mass of F2 = 2 x 19.00 g/mol = 38.00 g/mol

moles of F2 = mass/molar mass = 500 g/38.00 g/mol = 13.16 mol

Now we can plug in the values into the Ideal Gas Law equation:

V = (nRT)/P = (13.16 mol x 0.0821 L·atm/mol·K x 278.15 K)/735 torr

V = 4.97 L

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Answer:

hola no ablo inglés porfavor

According to the ideal gas equation and mole concept, there is 0.721 grams of HF present in the sample.

The ideal gas law is a equation which is applicable in a hypothetical state of an ideal gas.It is a combination of Boyle's law, Charle's law,Avogadro's law and Gay-Lussac's law . It is given as, PV=nRT where R= gas constant whose value is 8.314.The law has several limitations.

Substitution in above equation gives n=2×4.50/8.314×300=0.036 which is mass= 0.036×20=0.721 g.

Thus, there is 0.721 grams of HF present in the sample.

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