a student started with 1.453 grams of copper (ii) oxide and produced 3.500 g of copper (ii) sulfate. what is the percent yield? the product is a hydrate. use appropriate significant figures. do not put a percent sign in the answer box. please ignore extra zeros that will be automatically added to your answer by the system.

It is 194.88 moles of oxygen that the chemical engineer determined in the sample of methyl tert-butyl ether if there are 81.2 moles of carbon

If C5H12O the formula of methyl tert-butyl ether, it is observed that there are 5 hydrogen atoms for every 12 oxygen atoms

And if each mole contains exactly 6.022 × 10∧23 atoms, according to Avogadro's number, then a simple rule of thumb can determine how many hydrogen atoms are present.

1 mole ------------- 6.022 ×10∧23

81.2 moles ----------- x

X = 81.2 x 6.022 140 76×10∧23

x = 488,986 x 10∧23

Once again, by the rule of three, the amount of elementary oxygen particles is determined.

 5 H atoms ---------- 12 O atoms

488.986 x ×1023 H ------ x O

X = 488,986 x ×10∧23 x 12 /5

X = 1173.567 x 10∧23

And with the rule of three and Avogadro's number, the number of moles of oxygen is also determined.

6.022 ×1023 ------------- 1 mol

1173.567 x 1023----------- x mol

X moles = 1173.567 x 10∧23 x 1 / 6.022 x 10∧23

X = 194.88 moles

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The amount of CuCl copper(I) chloride that can be produced from 34.4 grams of Cl2 is 129.98 grams.

In the reaction 2Cu + Cl_{2} → 2CuCl, the balanced equation tells us that 2 moles of copper react with 1 mole of chlorine gas to give 2 moles of copper(I) chloride. In order to find the grams of copper(I) chloride produced from 34.4 grams of chlorine gas, we need to use stoichiometry.Stoichiometry is a branch of chemistry that involves using relationships between reactants and/or products in a chemical reaction to determine desired quantitative data.The first step in stoichiometry is to write the balanced chemical equation:2Cu + Cl_{2} → 2CuCl From this equation, we see that 2 moles of copper(I) chloride is produced for every 1 mole of chlorine gas. We can use this information to find how many moles of chlorine gas is required to produce 2 moles of copper(I) chloride:1 mole 2Cu + Cl_{2} → 2CuCl.

Hence, it follows that:\frac{2 moles CuCl2 }{1 mole Cl2} We can use this ratio to find how many moles of chlorine gas is required to produce 2 moles of copper(I) chloride. We know that 34.4 grams of chlorine gas was used in the reaction, so we can use its molar mass to convert grams to moles:

Molar mass of Cl2 = 2* 35.45 g/mol = 70.90 g/mol

Moles of Cl2 = \frac{34.4 g }{ 70.90 g/mol} = 0.485 mol

Now that we know the number of moles of Cl2, we can use the stoichiometry ratio to find the number of moles of CuCl2 produced:0.485 mol Cl2 * (\frac{2 mol CuCl2 }{ 1 mol Cl2}) = 0.970 mol CuCl2

Finally, we can convert the number of moles of CuCl2 produced to grams using the molar mass of CuCl2:Molar mass of CuCl2 = 2 * 63.55 g/mol + 2 * 35.45 g/mol = 134.00 g/mol Grams of CuCl2 produced = 0.970 mol CuCl2 * 134.00 g/mol = 129.98 g

Therefore, the amount of CuCl that can be produced from 34.4 grams of Cl2 is 129.98 grams.

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Air would be the most likely candidate for the can with the greatest change in temperature

Recall that the change in the heat capacity would be related to the heat capacity.

Since it has a relatively low specific heat capacity compared to the other options listed (iron filings, water, and sand). However, it's important to note that this is a simplified explanation and there may be other factors at play depending on the specific conditions of the experiment.

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Answer:

It is the bottom left one

Explanation:

Just did it in OW

The nitrogen balance of an active, healthy adult body where body weight and lean body mass are not changing would be B. Nitrogen equilibrium.

Nitrogen balance refers to the difference between nitrogen intake and nitrogen excretion in the body. When an individual is in nitrogen equilibrium, it means that the nitrogen intake from dietary protein and other sources is equal to the nitrogen excretion through various routes, such as urine, feces, and sweat.

In an active, healthy adult body where body weight and lean body mass are stable, the nitrogen intake would be sufficient to meet the body's nitrogen needs, which include protein synthesis for tissue repair and maintenance. The nitrogen excretion would also be balanced, with the amount of nitrogen excreted being equal to the amount of nitrogen taken in.

Therefore, when the nitrogen intake and excretion are in equilibrium, it indicates a state of nitrogen balance in the body. This means that the body is neither gaining nor losing nitrogen, and the individual is maintaining their current body weight and lean body mass.

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In an active, healthy adult body where body weight and lean body mass are not changing, the nitrogen balance would be in a state of (B) nitrogen equilibrium.

Nitrogen balance refers to the balance between nitrogen intake and nitrogen excretion in the body. Nitrogen is primarily obtained through dietary protein intake and is excreted through urine, feces, and sweat.

In a state of nitrogen equilibrium, the amount of nitrogen intake from dietary protein matches the amount of nitrogen excretion, resulting in a stable balance. This indicates that the body is neither gaining nor losing nitrogen over time.

A balanced nitrogen state is generally considered favorable for overall health and maintenance of lean body mass. It suggests that the body's protein needs are being adequately met to support various physiological processes, including tissue repair, muscle synthesis, and immune function.

Therefore, in the given scenario, the nitrogen balance would be categorized as nitrogen equilibrium.

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For getting an indication whether a chemical reaction or chemical change has taken place, if  B)Heat is given off then chemical reactions occur. So,correct option is B.

Chemical reactions are surrounding us, from the digestion of food in our body to how the light we get from the sun is the consequence of compound responses. Prior to starting with compound responses, realizing about physical and synthetic changes is significant

Option A can't be the response is dissolving is an actual change. No substance response occurred.

Option B is the response as it is an EXOTHERMIC reaction so intensity will be emitted.

Option C can't be the response as dissolving is essentially ions becoming particles, not a synthetic response by which a reactant responds with one more reactant to shape an item.

Option D can't be the response. Same explanation with respect to why An isn't the response.

Hence, correct option is B.

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(Complete question) is:

When determining whether a chemical reaction has taken place, you observe and look for several indicators. Which would be considered an indication that a chemical reaction or chemical change has taken place? A) Solid melts. B) Heat is given off. C) Substance dissolves D) Substance changes shape.

Water 3.0 deals mainly with sewage treatment. The primary aim of this project is to reduce the harmful impacts of chemical pollutants from industrial and agricultural activities on natural water resources.

Currently, used wastewater treatment technologies can break down some of the chemicals in wastewater but not all of them. Chemicals that are not broken down are referred to as persistent organic pollutants. These chemicals persist in the environment for long periods, and they can cause severe damage to aquatic life and human health.
Currently, the primary challenge facing water treatment technologies is the removal of persistent organic pollutants such as pesticides, pharmaceuticals, and endocrine-disrupting chemicals from wastewater.

These pollutants are generally water-soluble and resist microbial degradation, making them hard to remove from wastewater using current water treatment technologies. For example, conventional activated sludge treatment used in wastewater treatment plants does not remove some persistent organic pollutants from wastewater.
Failure to remove these pollutants from wastewater can have significant environmental and health impacts.

For example, pharmaceutical chemicals can cause antibiotic resistance, while endocrine-disrupting chemicals can cause birth defects, cancer, and other health problems.

Therefore, there is a need to improve wastewater treatment technologies to remove persistent organic pollutants from wastewater.
In conclusion, wastewater treatment technologies can break down some chemicals but not all. Chemicals that are not broken down are persistent organic pollutants and pose a significant risk to the environment and human health. Therefore, it is important to develop wastewater treatment technologies that can remove these pollutants from wastewater.

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Answer:

c because this is the one hundred all the time

Explanation:

Answer:

Not quite, they are different catagories.

Explanation:

A molecule is two or more atoms connected to each other. An element is an atom with a name. Think of water, a single water molecule is called H2O because it has two hydrogen atoms and one oxygen atom. Hydrogen and oxygen are both elements. Another way to see it is like, there are many kinds of animals(atoms). A specific animal would be a cat or a bird or something(the elements).

TLDR: An element can be part of a molecule, but is not one on its own.

Answer:

The answer isn’t

[Ne] 3s² 3p²

Answer:To calculate the concentration of the Fe(NO3)3 solution after dilution, we can use the formula:

Explanation:

C1V1 = C2V2

C1 = Initial concentration of the solution

V1 = Initial volume of the solution

C2 = Final concentration of the solution

V2 = Final volume of the solution

Initial concentration (C1) = 3.0 M

Initial volume (V1) = 80 mL

Final volume (V2) = 1500 mL

Using the formula, we can solve for C2:

C1V1 = C2V2

(3.0 M)(80 mL) = C2(1500 mL)

Rearranging the equation to solve for C2:

C2 = (C1V1) / V2

C2 = (3.0 M)(80 mL) / 1500 mL

C2 ≈ 0.16 M

Therefore, the concentration of the Fe(NO3)3 solution after dilution is approximately 0.16 M.

we have an initial solution of Fe(NO3)3 with a concentration of 3.0 M and a volume of 80 mL. The goal is to dilute this solution to a final volume of 1500 mL and determine the concentration of the diluted solution.

To do this, we can use the dilution formula: C1V1 = C2V2, where C1 and V1 represent the initial concentration and volume, and C2 and V2 represent the final concentration and volume.

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Answer:

it will move

Explanation:

The concentration of barium ions in the given solution is 0.1999 mol/L.

The balanced chemical equation for the reaction is:

\(Ba^2^+ + SO_4^{2-} - BaSO_4 (precipitate)\)

From the equation, we can see that one mole of \(BaSO_4\) is formed for each mole of \(Ba^2^+\). Therefore, the moles of \(Ba^2^+\) can be calculated as follows:

\(moles of Ba^2^+ = moles of BaSO_4\)

To determine the concentration of \(Ba^2^+\) in the solution, we need to convert the mass of the precipitate to moles of \(BaSO_4\). The molar mass of \(BaSO_4\) is 233.38 g/mol.

Using the given mass of the precipitate:

moles of \(BaSO_4\) = mass of precipitate / molar mass of \(BaSO_4\)

moles of \(BaSO_4\) = 1.167 g / 233.38 g/mol

moles of \(BaSO_4\) = 0.004998 mol

Since one mole of \(BaSO_4\) is formed for each mole of \(Ba^2^+\), the moles of Ba2+ in the original solution is also 0.004998 mol.

The volume of the solution used was 25.00 cm cube, which is equivalent to 0.02500 L. Therefore, the concentration of \(Ba^2^+\) in the solution can be calculated as follows:

concentration of \(Ba^2^+\) = moles of \(Ba^2^+\) / volume of solution

concentration of \(Ba^2^+\) = 0.004998 mol / 0.02500 L

concentration of \(Ba^2^+\) = 0.1999 mol/L

Therefore, the concentration of barium ions in the given solution is 0.1999 mol/L.

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The delta h in kJ of heat released per mole of NH3(g) formed in C)50.2kJ

To determine the delta H (ΔH) in kJ of heat released per mole of NH3(g) formed, we need to use the information provided and apply the concept of enthalpy change.

The given balanced equation for the Haber process is:

\(N_{2}(g) + 3H_{2}g → 2 NH_{3}(g) + 100.4KJ\)

From the equation, we can see that 2 moles of \(NH_{3}\) are formed per reaction, and 100.4 kJ of heat is released.

However, the yield of \(NH_{3}\) is stated to be approximately 98%. This means that for every 100 moles of N2 and H2 that react, approximately 98 moles of \(NH_{3}\) are formed.

So, for the formation of 98 moles of \(NH_{3}\), the amount of heat released would be:

(98 moles \(NH_{3}\) / 2 moles \(NH_{3}\)) * 100.4 kJ = 49.2 kJ

Therefore, the delta H of heat released per mole of \(NH_{3}\)(g) formed is approximately 49.2 kJ. Among the given options, the closest value is 50.2 kJ (option c), which represents the delta H value rounded to one decimal place. Therefore, Option C is correct.

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In 2CaCO3 there are 3 elements

I hope that helped you! If you have any further questions comment down below or message me! Good luck!

La fuerza de la gravedad depende de la masa (el peso) de cada objeto. La fuerza con que se atraen dos objetos es proporcional a su masa y disminuye rápidamente en el momento en que los separamos. De hecho, nosotros también atraemos objetos con ‘nuestra’ fuerza gravitatoria, pero pesamos tan poco que no podemos percibirlo. En cambio, el Sol es tan grande que es capaz de mantenernos girando a su alrededor a pesar de estar muy lejos. La Luna también ejerce su propia fuerza gravitatoria, pero, como es más pequeña y ligera que la Tierra, si nos pesásemos sobre su superficie veríamos que pesamos unas seis veces menos que en la Tierra.

Podríamos preguntarnos por qué la Luna no cae sobre la Tierra al igual que una manzana cae del árbol. La razón es que nuestro satélite nunca está quieto. Se mueve constantemente a nuestro alrededor. Sin la fuerza de atracción terrestre, se alejaría flotando en el espacio. Gracias a esta combinación de velocidad y distancia de nuestro planeta, la Luna siempre está en equilibrio, ni cae ni se aleja. Si se moviera más rápido, se alejaría, si se moviera con más lentitud, ¡caería!

Hemos dicho que la fuerza de la gravedad también depende de la distancia. Si nos alejásemos lo suficiente de la Tierra, escaparíamos a su fuerza de atracción. Y eso es lo que tratamos de hacer con las naves espaciales. Necesitamos superar la llamada ‘velocidad de escape’, que es aproximadamente 11,2 km/s (a esa velocidad, podríamos viajar de Londres a Nueva York ¡en tan solo 10 minutos!). Cuando un cohete alcanza esa velocidad, ya es libre para viajar por el sistema solar.

Dentro de una nave en órbita, no sentimos la fuerza de la gravedad terrestre. Los objetos no caen, sino que flotan, así que si saltas, no regresas al suelo. Es lo que les ocurre a los astronautas cuando están a bordo de una estación espacial que orbita alrededor de la Tierra.

The opposition offered to the flow of current by the reaction of a capacitor is known as capacitance. Capacitance is the property of a capacitor that allows it to store electrical energy in an electric field.

Capacitance is measured in units called farads, and is dependent on the geometry of the capacitor, the dielectric material between the plates, and the distance between the plates. The greater the capacitance of a capacitor, the more energy it can store. Capacitors are widely used in electronic circuits for storing energy, filtering signals, and for timing applications.


Capacitive reactance is represented by the symbol "Xc."
2. It can be calculated using the formula: Xc = 1 / (2πfC), where Xc is the capacitive reactance, f is the frequency of the AC signal, and C is the capacitance of the capacitor.
3. As the frequency or capacitance increases, the capacitive reactance decreases, allowing more current to flow through the capacitor. Conversely, as the frequency or capacitance decreases, the capacitive reactance increases, limiting the current flow.

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To estimate the total volume of the solution formed by mixing 50.0 cm³ of pure ethanol with 50.0 cm³ of pure water, you need to calculate the masses of ethanol and water, find the density of the solution using the provided figure, and then divide the total mass by the density of the solution.

To estimate the total volume of the solution formed by mixing 50.0 cm3 of pure ethanol with 50.0 cm3 of pure water using Fig. 1 in Topic 4C of Atkins and dePaulo, we need to first locate the point on the graph where the two densities intersect.
From the graph, we can see that the intersection point is at approximately 0.93 g cm-3. This means that the density of the resulting solution will be around 0.93 g cm-3.
To find the total volume of the solution, we can use the equation:
density = mass / volume
Rearranging the equation, we can solve for the volume:
volume = mass / density
Since we are mixing equal volumes of ethanol and water, we can assume that the mass of each liquid will be equal to its volume (since the density is given in g cm-3). Therefore, the total mass of the solution will be:
mass = 50.0 g (ethanol) + 50.0 g (water) = 100.0 g
Substituting this mass and the density of the solution into the equation, we get:
volume = 100.0 g / 0.93 g cm-3 = 107.5 cm3
Therefore, the total volume of the solution formed by mixing 50.0 cm3 of pure ethanol with 50.0 cm3 of pure water is approximately 107.5 cm3.
Since I cannot view the attached figure, I will provide a general explanation using the given information. To estimate the total volume of the solution formed by mixing 50.0 cm³ of pure ethanol with 50.0 cm³ of pure water, you can follow these steps:
1. Calculate the mass of ethanol and water using their respective densities and volumes:
- Mass of ethanol = density of ethanol x volume of ethanol = 0.789 g/cm³ x 50.0 cm³ = 39.45 g
- Mass of water = density of water x volume of water = 1.000 g/cm³ x 50.0 cm³ = 50.0 g
2. Calculate the total mass of the solution:
- Total mass = mass of ethanol + mass of water = 39.45 g + 50.0 g = 89.45 g
3. Refer to the figure in Topic 4C of Atkins and dePaulo, find the density of the solution with the given masses of ethanol and water.
4. Calculate the total volume of the solution using the density from the figure:
- Total volume = total mass / density of the solution
In summary, to estimate the total volume of the solution formed by mixing 50.0 cm³ of pure ethanol with 50.0 cm³ of pure water, you need to calculate the masses of ethanol and water, find the density of the solution using the provided figure, and then divide the total mass by the density of the solution.

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Answer:

1)RADICLE ->It is the embryonic root of the plant.

PLUMULE ->It is the embryonic shoot of the plant.

2)RADICLE ->It grows downwards into the soil.

PLUMULE ->It grows upwards into the air.

3)RADICLE ->Radicle is the first part of the seedling.

PLUMULE -> Plumule grows after the radicle.

4)Radicles are negatively phototropic. Plumule is positively phototropic.

i am glad i helped

Answer:

It is broken down into water and oxygen

Explanation:

2H2O2 -----> 2H2O +O2

Answer:

it's volume also decrease

The given chemical equations are balanced as per law of conservation of mass.

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 .

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Answer: i got no idea but good luck yo

Explanation:

The number of moles in container 2 is 33.3moles when the container has 27.32L of gas inside it

The number of moles of gas in container 2 can be calculated using the Ideal Gas Law:  

n = PV/RT  

where n is the number of moles of the gas with known volume,

P is the pressure (assumed to be 1 atm for ideal gases),

V is the volume (27.32 liters),

R is the ideal gas constant (0.0821 L·atm/mol·K) and

T is the temperature (assumed to be 273.15 K).  

Plugging in the values, we get:  

n = (1 atm)(27.32 L)/(0.0821 L·atm/mol·K)(273.15 K)

n = 33.3 mol  

Therefore, there are 33.3 moles of gas in container 2.

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Answer:

1. the reaction rates can not decrease

2. correct!

3. correct!

4. decreasing the amount of reactants

5. correct!

Explanation:

good luck!

Martin's statement is testable because it can be answered using an experiment. Option C.

Research questions are questions raised during observations. These questions are meant to be answered during the course of the research.

Thus, the experiment must be designed in such a way that all the questions raised during observations are answered by the results of the experiment.

Martin is asking how fast water and nutrients move up the stem of a carnation. A carnation is a plant.

The rate at which water and nutrients move up the stem of a plant is something that can be determined by performing a relevant experiment using the plant in question. This has actually been done in several experiments in the past.

Thus, the question asked by Martin is testable using an experiment.

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Answer: C

Explanation:

Answer:

It is critical to understand how the numbers allocated to entities, objects, and events are to be interpreted. Data collection, analysis, and presentation all need the use of a measurement scale. We should utilize the correct diagram for the data collection, which is highly important for expressing summaries and conclusions to the audience quickly and simply.

The number of moles in the room depends on the temperature.

Assuming that the temperature and volume in the room are the same as those outside, we can use the ideal gas law to calculate the number of moles of gas in the room.

Ideal gas law is given by:

PV = nRT

Number of moles:

n = PV/RT

Since the temperature and pressure are the same in both cases, we can write:

n(room) = (P × V(room)) / RT

n(bulb) = (P × V(bulb)) / RT

We are given that the bulb contains 9.00 moles of gas at the same temperature and pressure as the room. Therefore, we can use the number of moles in the bulb to find the pressure and temperature:

n(bulb) = (P × V(bulb)) / RT

9.00 mol = (P × 61.0 L) / (R × T)

Similarly, for the room, we can write:

n(room) = (P × V(room)) / RT

n(room) = (P × 85.0 L) / (R × T)

P = (n × RT) / V

P = (PV / RT) × RT / V

P = nRT / V

We can use the value of n from the bulb to find the pressure and temperature:

9.00 mol × R × T / 61.0 L = P

P = 3.17 atm

Now we can use this value of pressure to find the number of moles in the room:

n(room) = (P × V(room)) / RT

n(room) = (3.17 atm × 85.0 L) / (R × T)

n(room) = (3.17 atm × 85.0 L) / (0.08206 L atm/mol K × T)

n(room) = 129.3 L atm / (R × T)

Therefore, the number of moles in the room depends on the temperature.

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The correct name for the compound \(FeSO_{4}-6H_{2}O\) is Iron II Sulfate hexahydrate. This is because the compound contains iron in its +2 oxidation state (hence the "II" in the name), and the sulfate ion (\(SO_{4}\)) has a -2 charge.

The "hexahydrate" part of the name indicates that there are six water molecules associated with each formula unit of the compound.

Therefore, the correct name for this compound is Iron II Sulfate hexahydrate, and this name accurately reflects its chemical composition.

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Answer:

C) -3063J

Explanation:

multiply m, c, and change in T

Fracture resistance during compression is an important property for materials used in various applications such as construction, aerospace, and automotive industries.

The ability to withstand compressive forces without breaking or cracking is determined by several factors such as the material's strength, stiffness, and toughness. When a material is subjected to compressive forces, it undergoes deformation, which can lead to failure if the material cannot withstand the applied load. The material's ability to resist fracture during compression is dependent on its compressive strength, which is the maximum compressive stress that the material can withstand before it fractures. To improve fracture resistance during compression, manufacturers can use materials that have high compressive strength and toughness, such as metals and composites.

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