co2 gas in a closed container has a partial pressure of 0.400 atm. if all the co2 is consumed in the reaction below, what is the partial pressure of the o2 formed? (assume constant volume and temperature.)

371.25 joules of heat energy are needed to raise the temperature of 15.0 g of iron from 11°C to 66°C.

The following formula can be used to determine the amount of heat energy needed to raise a substance's temperature:

Q = m * c * ΔT

Where

Given the following values:

m = 15.0 g (mass of iron)

c = 0.45 J/g°C (specific heat of iron)

ΔT = 66°C - 11°C = 55°C (change in temperature)

Plugging these values into the formula, we can calculate the heat energy (Q):

Q = 15.0 g * 0.45 J/g°C * 55°C

Q = 371.25 J

Therefore, 371.25 joules of heat energy are needed to raise the temperature of 15.0 g of iron from 11°C to 66°C.

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The intermembrane space has the lowest pH in the mitochondria.

Describe mitochondria.

A proton gradient is necessary for ATP synthase, which is found on the inner mitochondrial membrane, to produce ATP. Accordingly, protons must be pushed through the inner mitochondrial membrane and into the intermembrane space. As a result of the high proton concentration, the intermembrane space in the mitochondria has the lowest pH.

While the cytosol is not a component of the mitochondria, the inner mitochondrial membrane is where the mitochondrial matrix is located. Neither of these have pH values that are unusually low.

The inner mitochondrial membrane has folds called christae that increase its surface area for the activities involved in the electron transport chain. Despite being structurally important in promoting respiration, the pH of christae is similar to that of the mitochondrial matrix.

Hence, The intermembrane space has the lowest pH in the mitochondria.

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Answer: Fe is the element that is being oxidized (oxidation number changes from +2 to +3) while Cl is the element that is reduced (oxidation number changes from +5 to -1) in the given reaction.

Explanation:

The question requires us to find the element that is oxidized and the one reduced in the following chemical reaction:

To solve this problem, we need to determine the oxidation number of all elements in the reactants and products sides, and then identify the elements that had their oxidation number increased (oxidized species) and decreased (reduced species).

To identify the oxidation numbers, we'll need to remember a few points:

- K is an alkali metal (part of group 1 in the periodic table), and it usually assumes the oxidation number +1;

- O usually presents oxidation number -2, except in a few specific cases;

- the anion (SO4) presents total charge -2 (in this anion, S presents oxidation number +6 and O, -2);

- H usually presents oxidation number +1.

Next, let's identify the oxidation number of all elements involved in the reaction, on both sides of the chemical equation. Since all compounds are neutral (i.e., they do not present charge), the sum of all oxidation numbers must be 0:

(note that the oxidation number of each element is indicated in red, above the respective element, while the contribution of this element to the molecule charge, considering the number of atoms, is represented in blue below the element).

In the image above, we can see that Cl has its oxidation number changing from +5 in KClO3 to -1 in KCl (highlighted in purple), while Fe has its oxidation number changing from +2 in FeSO4 to +3 in Fe2(SO4)3 (highlighted in green).

Therefore, we can say that Fe is the element that is being oxidized while Cl is the element that is reduced in the given reaction.

Answer:

increase

Explanation:

dont known reason burr answer is correct

Answer:

When temperature increases ,gas increases ,because of the rise in temperature evaporation will take place.

Explanation:

When you boil water to make coffee/tea the kettle/boiler releases the evaporation caused by the rise in temperature.

Complete Question

A guest orders a drink that contains 4 1/2 ounces of 80-proof liquor. Approximately how many drinks does this beverage contain?

Answer:

\(No\ of\ drinks =3\)

Explanation:

From the question we are told that:

Ordered drink 4 1/2 ounces of 80-proof liquor

Generally

80-proof liquor contains 40\% alcohol

Giving the drink a standard 1.5 ounce of distilled spirit

Therefore

\(No\ of\ drinks =\frac{4.5}{1.5}\)

\(No\ of\ drinks =3\)

The solutes in Luis's carbonated beverage are solid sugar (C12H22O11) and CO2 gas.

In the context of a solution, solutes are substances that are dissolved in a solvent. In this case, the solvent is liquid water, which is the main component of the carbonated beverage. The solutes in the beverage are solid sugar (C12H22O11) and CO2 gas.

Solid sugar (C12H22O11) dissolves in water to form a solution. The sugar molecules break apart and disperse throughout the water, becoming evenly distributed. This dissolved sugar contributes to the sweetness of the beverage.

CO2 gas dissolves in water to form carbonic acid (H2CO3), which gives the beverage its characteristic carbonation. When CO2 gas is dissolved in water, it reacts with the water molecules to form carbonic acid. This reaction produces carbon dioxide ions (CO3^2-) and hydrogen ions (H+), which contribute to the carbonation and acidity of the beverage.

Therefore, the solutes in Luis's carbonated beverage are solid sugar (C12H22O11) and CO2 gas.

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Answer:

\(volume = \frac{mass}{density} \\ \)

The balanced equation for the reaction between sodium and chlorine gas is:2 Na(s) + Cl2(g) → 2 NaCl(s)Given, mass of Na = 50.2 gMass of Cl2 = 63.0 gTo find out the theoretical yield of sodium chloride, we need to first find out the limiting reagent. The t limiting reagen is the reactant that gets completely consumed and limits the amount of product formed.

The other reactant that is not the limiting reagent is called the excess reagent.Let's calculate the amount of NaCl formed if Na is the limiting reagent:From the balanced equation,2 moles of Na reacts with 1 mole of Cl2 to give 2 moles of NaCl.The molar mass of Na is 23 g/mol.The molar mass of Cl2 is 71 g/mol.So, 50.2 g of Na is equal to 50.2 g / 23 g/mol = 2.18 moles of Na.63.0 g of Cl2 is equal to 63.0 g / 71 g/mol = 0.887 moles of Cl2. From the balanced equation,2 moles of Na requires 1 mole of Cl2. So, the reaction will consume 2 × 0.887 = 1.77 moles of Na.So, Na is the limiting reagent and Cl2 is the excess reagent.Now, let's find out the amount of NaCl formed if Na is the limiting reagent. From the balanced equation,2 moles of Na reacts with 1 mole of Cl2 to give 2 moles of NaCl.So, 1.77 moles of Na will react with 0.885 moles of Cl2 to give 1.77 moles of NaCl.The molar mass of NaCl is 58.5 g/mol.So, the mass of NaCl formed = 1.77 mol × 58.5 g/mol = 103.45 gNaClHence, the theoretical yield of NaCl for the reaction of 50.2 g Na with 63.0 g Cl2 is 103.45 g NaCl (main answer).

Option D (104 g NaCl) is close to the theoretical yield but not correct as the calculations done above show that the theoretical yield is 103.45 g NaCl.

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Answer:

158 grams

Explanation:

Oxygen and silicon are found in silicate minerals. Minerals that lack silicate do not. Their make-up and prevalence in the crust of the earth.

What materials are silicate and which are non-silicate among the following?

Quartz, olivines, and garnet minerals are typical examples of silicate minerals. Sand, for instance, is mostly made of quartz, which is particularly widespread. Pyrite, also known as "fool's gold," is a common non-silicate mineral that is composed of iron and sulfur and is well-known for its misleading metallic brilliance.

What do you mean by non-silicate minerals?

Minerals that don't contain oxygen or silicon (Si) in a tetrahedral form. Calcite, gypsum, flourite, hailte, and pyrite are some of them. The mineral groups Oxides, Sulfides, Halides, and Phosphates are typical non-silicate mineral groups.

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Answer:

the neutral formula for magnesium chlorite is Mgcl2

\(\rm Mg(ClO_2)_2\) is the neutral formula for magnesium chlorite. The chlorite ion, also referred to as the \(\rm ClO_2^-\) ion.

The \(\rm ClO_2^-\) ion, also known as the chlorite ion, is what is commonly meant when the word "chlorite" is used. The positive and negative charges in a compound must be equal in order for it to be neutral. Since the magnesium ion (\(\rm Mg^{2+}\)) is a cation and has a +2 charge, it must shed two electrons in order to become stable. Because oxygen (O) generally has a -2 charge and in this instance there are two oxygens, the total charge is -2, the chlorite ion (\(\rm ClO_2^-\)) has a -1 charge. It has a -1 charge since the molecule only contains one chlorite ion.

Balance the charges in order to make the compound electrically neutral. We require two chlorite ions to balance the charge because the chlorite ion has a -1 charge and the magnesium ion has a +2 charge. As a result, \(\rm Mg(ClO_2)_2\) is the proper formula for magnesium chlorite.

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Answer:

Chemical reactions that absorb (or use) energy overall are called endothermic. In endothermic reactions, more energy is absorbed when the bonds in the reactants are broken than is released when new bonds are formed in the products.

Explanation:

I hope it's useful for u...

Thank you

Answer:

True

Explanation:

Hope this helps you complete the quiz :)

Answer:

The process of forming the iron - rich core, the low density crust which is also rich in silicon, oxygen, aluminum, and the intermediate density mantle rich in silicon, oxygen, and magnesium is called the differentiation. Thus, the answer to this item is letter A.

Explanation:

The mass defect of an atomic nucleus is the difference between the actual mass of the nucleus and the sum of the masses of its individual protons and neutrons. The mass defect of the oxygen nucleus 16 8O is approximately 0.133926 atomic mass units.

To calculate the mass defect of the oxygen nucleus 16 8O, we need to subtract the actual mass of the nucleus from the sum of the masses of its individual protons and neutrons.

The atomic mass of neutral 16 8O is given as 15.994914 atomic mass units.

The mass of a proton is approximately 1.007276 atomic mass units, and the mass of a neutron is approximately 1.008665 atomic mass units.

To calculate the mass defect:

Mass defect = (Number of protons × mass of a proton) + (Number of neutrons × mass of a neutron) - Atomic mass

For oxygen-16, which has 8 protons and 8 neutrons:

\((8 * 1.007276) + (8 * 1.008665) - 15.994914\)

= 0.133926 atomic mass units

Therefore, the mass defect of the oxygen nucleus 16 8O is approximately 0.133926 atomic mass units.

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The pH of a 9.00 x 10^-6 M solution of HCN ignoring the effects of the autoprotolysis of water is 5.17.

The pH of a 9.00 x 10^-6 M solution of HCN ignoring the effects of the autoprotolysis of water is 5.17.

Explanation

The pH of a 9.00 x 10^-6 M solution of HCN is 5.17, ignoring the effects of the autoprotolysis of water. When taking into account the effects of the autoprotolysis of water, the pH of the same acid at the same concentration is 5.14.

To calculate the pH of a 9.00 x 10^-6 M solution of HCN ignoring the effects of the autoprotolysis of water

The dissociation reaction for HCN is:

HCN + H2O ⇌ H3O+ + CN-

According to the question, K value of the HCN is 4.90 x 10^-10. For weak acids, we can use the following expression to calculate the pH of the acid:

[H3O+] = √(Ka[C])

Here, Ka = K of the acid, C = concentration of the acid. We can substitute the given values of K and C in the equation above to calculate the [H3O+] concentration as:

[H3O+] = √((4.90 x 10^-10)(9.00 x 10^-6))= 2.07 x 10^-8M

We can now calculate the pH of the solution as:

pH = -log[H3O+]= -log (2.07 x 10^-8)= 5.17

Therefore, the pH of a 9.00 x 10^-6 M solution of HCN ignoring the effects of the autoprotolysis of water is 5.17.

How to calculate the pH of the same acid at the same concentration taking into account the effects of the autoprotolysis of water?

The auto-ionization of water can be written as:

2H2O ⇌ H3O+ + OH-

Since, [H3O+] concentration is due to the dissociation of HCN only, we can use the same expression we used above to calculate the [H3O+] concentration.

[H3O+] = √((4.90 x 10^-10)(9.00 x 10^-6))= 2.07 x 10^-8M

We can now calculate the pOH of the solution as:

pOH = -log[OH-]

        = -log(Kw/[H3O+])

        = -log(1.0 x 10^-14/[2.07 x 10^-8])

        = 8.14pH

  pH = 14.00 - pOH

        = 14.00 - 8.14

        = 5.86

Therefore, the pH of a 9.00 x 10^-6 M solution of HCN ignoring the effects of the autoprotolysis of water is 5.17.

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what do you need answers too ?

The first location of chemical and mechanical digestion is the stomach. This statement is false.

Digestion is the breaking down of large insoluble food molecules into smaller water-soluble food molecules so that they can be absorbed into the aqueous plasma. In certain organisms, these small substances are absorbed from the small intestine into the bloodstream. Digestion is important for breaking down food into nutrients that the body uses for energy, growth, and cell repair that it needs to survive.

The digestive system has many forms. A basic distinction is made between internal and external digestion. External digestion evolved early in evolutionary history, and most fungi still rely on it. During this process, enzymes are secreted into the organism's environment, where organic substances are decomposed and some of the products diffuse back into the organism. Animals have a tube (alimentary canal) where internal digestion takes place. This is more efficient as more decomposition products can be trapped and the internal chemical environment can be more effectively controlled.

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Answer:

Mannitol is a medication that is used to reduce brain swelling, but its use has been limited by the possibility of crystallization when it is administered intravenously. The concentration of intravenous mannitol solution should not be greater than 15% to avoid crystallization.

Mannitol is most likely to crystallize during intravenous  injection when the concentration of the solution is greater than 15%. According to research, mannitol solutions with concentrations of 15% to 25% have a high risk of crystallization during intravenous injection. This crystallization could lead to blockages in small blood vessels, which could cause tissue damage or even death in severe cases. The likelihood of crystallization increases as the concentration of the solution increases. When mannitol is used intravenously, it is important to monitor patients for signs of crystallization, such as blood clots or changes in urine color and volume.

The most common concentration of mannitol used in intravenous injections is 20%. Although the risk of crystallization is still present at this concentration, it is less likely to occur than at higher concentrations. To reduce the risk of crystallization, it is recommended that the mannitol solution be warmed to body temperature before administration and that the injection site be monitored for signs of crystallization during the injection and afterwards. In conclusion, the concentration of intravenous mannitol solution should not be greater than 15% to avoid crystallization.

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Answer:

i think 50%

Explanation:

Answer:

Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability.

Answer:

11.5 or 11.52, depending on however many decimal places you round it to

Explanation:

the equation for mass ( using the specific heat capacity equation) is energy transferred divided by temperature change x the specific heat capacity.

so, we do 725 ÷ 32° (the temp change) x 2.03 = 11.52 or 11.5, depending on how many decimal places you round to

i would round to 2 decimal places, so the answer would be 11.52kg.

mass is measured in kg :) hope this helped.

The solubility of calcite decreases with increasing water temperature, this can help in washing clothes as the calcite will get deposited at the bottom because of its less solubility and clothes can be washed easily.

Calcite also known as calcium carbonate is nearly insoluble in water because of the strong electrostatic force of attraction that exists in the calcium carbonate molecules. Thus, when a system's water temperature rises, less carbon dioxide (CO₂) dissolves in the water, which leads to calcite precipitating. The degree of solubility of calcium carbonate falls as the water temperature rises.

Hence, when the temperature rises the calcite precipitates and thus gets deposits at the bottom, and hence for hard water circumstances, which have an acidic environment, calcium carbonate soaps are excellent. To eliminate undesirable, intractable stains, calcium carbonate generates an alkaline medium that is perfect for detergents. Thus clothes are washed easily.

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The final pressure of the ideal gas that contained in a 2. 5 L container at a pressure of 4.0 atm = 4.33 atm.

To determine the final pressure of the ideal gas can be calculated using the Ideal Gas Law, which states that:

PV = nRT

Where:

P is the pressure

V is the volume (L)

n is the amount of gas in moles

R is the universal gas constant, and

T is the temperature in Kelvin.

The formula can be rearranged to solve for the final pressure (P₂):

P₁V₁/T₁ = P₂V₂/T₂

Since the volume and the amount of gas are constant, the equation can be simplified to:
P₁/T₁ = P₂/T₂
Hence,
P₂ = (P₁/T₁) × T₂
P₂ = (4.0 atm / 298.15 K) × 323.15 K
P₂ = 4.33 atm
Therefore, the final pressure of the ideal gas is 4.33 atm.

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Answer:

The weight of 3.45 moles of carbon dioxide has been 151.8 grams.

Moles can be calculated as the mass of solute present with respect to the molecular mass of the solute.

Moles can be expressed as:

Moles = \rm \dfrac{weight}{molecular\;weight}

molecularweight

weight

The molecular weight of carbon dioxide has been 44 grams/mol.

The given moles of carbon dioxide = 3.45 moles.

3.45 mol = \rm \dfrac{weight}{44\;g/mol}

44g/mol

weight

Weight of carbon dioxide = 3.45 \times× 44 grams

Weight of carbon dioxide = 151.8 grams.

The weight of 3.45 moles of carbon dioxide has been 151.8 grams.

A. because he might be in trouble in a play

The amount of energy absorbed by 2.00 L of gasoline as it is converted to the vapor phase at its boiling point is 22606 J.

We know that;

1 mole of gasoline occupies 22.4 L

x moles of gasoline occupies 2 L

x = 0.089 moles

Then we have that the mass of the gasoline = 0.089 moles * 100 g/mol

= 8.9 g

Then;

H = mL

L = 2540 J/g for gasoline

Thus the energy that is absorbed  is;

H =  8.9 g * 2540 J/g

H = 22606 J

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A. Fe3+. This is because Fe3+ has a higher charge than Ca2+ and Na+, which means it has a stronger attraction to the water molecules and therefore causes more disruption to the water's ability to vaporize.

Additionally, the concentration of Fe3+ ions would need to be much lower than Ca2+ and Na+ ions to have the same effect on the boiling point of water due to its higher charge.
The boiling point elevation depends on the number of ions present in the solution. In this case, if all ions have equal concentration, Fe3+ (A) will contribute most to elevating the boiling point of H₂O, because it has the highest charge and will produce more ions when dissolved in water.

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