0. 34 ll of hno3hno3 is titrated to equivalence using 0. 14 ll of 0. 1 mnaohmnaoh. what is the concentration of the hno3hno3 ?

The energy needed to decompose 10.8 grams of N₂O5 is 110 kJ.

It takes 110 kJ of energy to decompose 2 moles of N₂O5 (the molecular weight of N₂O5 is 108 g/mol). Since 10.8 grams of N₂O5 is equal to 0.1 moles, it takes 110 kJ of energy to decompose 0.1 moles of N₂O5, which is the same as decomposing 10.8 grams of N₂O5.

Answer:

0.00726mol

Explanation:

Using general gas equation,

PV = nRT

Where;

P = pressure

V = volume

n = number of moles

R = gas constant (0.0821 L atm mol/K)

T = temperature

First, we need to convert the units of each variable

Volume = 185mL = 0.185L

Pressure = 760.0 torr = 1 atm

Temperature = 98.6°F = 310.15K

PV = nRT

1 × 0.185 = n × 0.0821 × 310.15

0.185 = 25.46n

n = 0.185/25.46

n = 0.00726mol

The balanced chemical equation for the reaction of calcium and sodium chloride is given as follows: Ca + 2 NaCl → CaCl2 + 2 Na.

This reaction results in the formation of calcium chloride and sodium. When solid calcium reacts with aqueous sodium chloride, it forms solid calcium chloride and aqueous sodium as a result of a single-displacement reaction. The chemical reaction can be written as; Ca (s) + 2 NaCl (aq) → CaCl2 (aq) + 2 Na (s) Where, s = solid, aq = aqueous In this chemical equation, one atom of calcium combines with two molecules of sodium chloride, which gives calcium chloride and two atoms of sodium as a product.

The equation is balanced because it shows the conservation of matter. The same number of atoms of each element is on the reactant and product side of the equation. In this reaction, Ca acts as a reducing agent, and NaCl acts as an oxidizing agent, as one electron is lost by the reducing agent, and another is gained by the oxidizing agent. Therefore, the correct balanced equation for the reaction of calcium and sodium chloride is given as above.

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Answer:

Dipole moment of HNO3 is 2.17 ± 0.02 D

ANSWER

EXPLANATION

Given that;

Follow the steps below to find the grams of H2SO4

Step 1; Find the number of moles of H2SO4 using the below formula

Recall, that Avogadro's number is 6.02 x 10^23

Step 2; Find the mass of H2SO4 using the formula below

Recall, that the molar mass of 98.079 g/mol

Answer and Explanation:

Explosion of a star releases what into the atmosphere?

This would be many basic elements; Calcium, Oxygen, and Carbon for the most known. These get flung out into space at light speed, which through time evolves into other stars and planets. Though this is not promised always.

Answer:

"Like dissolves like" is an expression used by chemists to remember how some solvents work. It refers to "polar" and "nonpolar" solvents and solutes. Like dissolves like, that means polar dissolves polar, so water dissolves salt.

Explanation:

Answer:

do you mean DeF?

Explanation:

In bonding, main group elements gain or lose electrons to attain the electronic configuration of the noble gas closest to them in the periodic table.

A noble gas is a type of chemical element that is highly unreactive and does not readily form compounds with other elements. The noble gases are located in Group 8 of the periodic table and include helium, neon, argon, krypton, xenon, and radon.

This process loosing or gaining electron, is an attempt to achieve a full valence shell of electrons, which is considered to be a stable electron configuration. By gaining or losing electrons, the main group elements can achieve the electron configuration of a noble gas and thus form stable compounds.

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Answer:

C9H13O3N

Explanation:

Take the atomic mass of C=12.0, H=1.0, O=16.0 and N=14.0.

We can draw a chart (please view this on desktop so to avoid spacing errors):

Let the mass of Epinephrine be 100g.

                             C                       H                          O                              N

mass(g) :              59                      7.15                    26.2                         7.65

no. of moles : 59/12 =4.9167     7.15/1 = 7.15     26.2/16=1.6375 7.65/14=0.5464

(n.o.m. = mass/molar mass)

Ratio:   4.9167/0.5464 =9    7.15/0.5464=13      1.6375= 3      0.5464/0.5464 =1

(divide the n.o.m. by the smallest n.o.m., which is 0.5464 in this case, take the whole numbers)

So, the empirical formula will be: C9H13O3N

But this is still not yet the molecular formula. We have to ensure the molar mass is 183g/mol. Multiply the empirical formula by n.

So, let the molecular formula of Epinephrine be (C9H13O3N)n.

12x9n + 1x13n + 16x3n + 14n = 183

108n + 13n + 48n + 14n = 183

183 n = 183.

n = 1

Hence, the molecular formula is C9H13O3N.

As the reaction between the two gases proceeds, the volume of the container will decrease due to the formation of a new gas, XY, which takes up less space than the two gases combined.

In a closed system, the decrease in volume is accompanied by an increase in pressure, as the molecules of XY have less space to move around in than the molecules of X and Y.

This is because the increased pressure will cause the molecules to move faster, thereby increasing the kinetic energy of the system. This increase in temperature will cause the reaction to speed up, leading to more molecules of XY being formed. As the reaction continues, the pressure, temperature, and volume will continue to change in a dynamic equilibrium until all the reactants are used up.

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Answer:

A

Explanation:

Curly Hair

Explanation:

20984Po→20582Pb+42α

4520Ca→4521Sc+0-1e+00ν

Explanation:

The alpha decay of polonum-209, which consists of the emission of an alpha particle, will leave behind the atom of a different element.

Notice that the identity of the element changes after the decay. This means that you're dealing with a nuclear transmutation, a process that converts an atom of a given element into an atom of a different element.

For a current of 15.0 A is passed through molten magnesium chloride for 15.0 hours, the amount of moles of magnesium metal   is mathematically given as

M=4.2mole

Generally, the equation for the Chemical reaction  is mathematically given as

Mg+2e---->Mg

Therefore

Charge=Currect*time

Q=15*5*4.0*10^4

Q=8.10*10^5C

In conclusion, the number of moles

8.10*10^5C*1M/(2*96500)

M=4.2mole

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Answer:

B

Explanation:

I am not sure but I think it is B. Out of all the answers that one makes sense.

Answer:

should be B

Explanation:

If the position of the electrodes were switched but not the solutions for any of the electrochemical cells, the observed voltage would be the negative of the original voltage.



This is because the voltage of an electrochemical cell is determined by the difference in reduction potentials between the two half-cells. When the position of the electrodes is switched, the half-cell potentials are reversed, which changes the overall voltage of the cell.

For example, the original cell with copper as the cathode and zinc as the anode has a voltage of:

Ecell = Ecathode - Eanode
Ecell = 0.34 V - (-0.76 V)
Ecell = 1.10 V

If the position of the electrodes is switched, the new cell would have zinc as the cathode and copper as the anode. The voltage of this cell would be:

Ecell = Ecathode - Eanode
Ecell = (-0.76 V) - 0.34 V
Ecell = -1.10 V

Therefore, the observed voltage would be the negative of the original voltage.

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Answer: 0.24 dm

Explanation:

Answer:

\(\boxed {\boxed {\sf 4.8 \ M \ KCl}}\)

Explanation:

The molarity of a solution is found by dividing the moles of solute by the liters. of solvent.

\(molarity=\frac{moles}{liters}\)

We know the solution has 3.6 moles of potassium chlorine. We know there are 750 milliliters of solvent, but we need to convert this to liters.

Now we know the moles and liters, so we can calculate molarity.

Substitute these values into the formula.

\(molarity= \frac{3.6 \ mol \ KCl}{0.75 \ L}\)

Divide.

\(molarity= 4.8 \ mol \ KCl/ L\)

\(molarity= 4.8 \ M \ KCl\)

The molarity of the solution is 4.8 M KCl.

Answer:

Hope it helps!!!

............

In the Lewis structure, the Ca atom donates its two valence electrons to two F atoms.

The bonding in calcium fluoride (CaF₂) involves the transfer of electrons from calcium (Ca) to fluorine (F), resulting in the formation of ionic bonds.

Each F atom gains one electron to achieve a stable electron configuration of eight electrons in its outermost energy level. The electrostatic attraction between the positively charged Ca ion (Ca²⁺) and the negatively charged F ions (F⁻) holds the compound together.

It's important to note that the diagram represents a simplified 2-dimensional representation of the compound's structure. In reality, the compound adopts a three-dimensional crystal lattice structure, with each Ca ion surrounded by eight F ions and each F ion surrounded by four Ca ions.

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Answer:

Li3N

Explanation:

Li+N2=Li3N.........................

Answer:

4 Li(s)+O2(g) → 2 Li2O(s)

Explanation:

its right

The ion that has 26 protons, 28 neutrons, and 24 electrons is Iron (Fe) (option c).

An element can be determined by the number of protons in the nucleus of its atom. The number of protons present in an atom is referred to as the atomic number of the element.

This means that the number of protons in an atom is unique to a specific element.

Iron (Fe) has 26 protons in the nucleus of its atom.

Therefore, an ion with 26 protons is an ion of the element iron (Fe).

Magnesium (Mg) has 12 protons, Chromium (Cr) has 24 protons, Xenon (Xe) has 54 protons and Nickel (Ni) has 28 protons.

Thus, an ion which has 26 protons, 28 neutrons, and 24 electrons  is Fe (option c)

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The electrophile that is used to make the acetophenone from the benzene is the CH₃CO⁺.

The Acetophenone is the carbonyl compound in which the the group called as the ketone group is attached directly to  the benzene ring. The catalyst that is used in the production of the acetophenone is the anhydrous aluminum chloride. This type of the reaction is a type of the electrophilic substitution reaction. The Electrophiles are the electron-deficient species and that are attracted to the electron - rich center. The electrophiles will accepts the electron pair.

The electrophile is CH₃CO⁺ that is used in the production of the acetophenone from benzene.

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The given statement "organic chemistry is study of chemistry of compounds which contain primarily carbon and hydrogen" is true. Because, Organic chemistry is the study of compounds which contain primarily carbon and hydrogen due to the unique properties and bonding behavior of carbon.

Carbon has the ability to form stable covalent bonds with itself and other elements, allowing for the formation of a vast number of organic compounds. These compounds can vary greatly in their structures and properties, providing a rich and diverse field of study.

Carbon atoms have four valence electrons, which allows them to form strong covalent bonds with other atoms, including other carbon atoms, hydrogen, and a variety of other elements. Carbon can form single, double, and triple bonds, as well as branched and cyclic structures, resulting in a wide range of organic compounds with different functional groups and properties.

Furthermore, carbon-based compounds are fundamental to life as they are the building blocks of biological molecules, such as carbohydrates, lipids, proteins, and nucleic acids. Organic chemistry plays a crucial role in understanding the structure, properties, and reactions of these biomolecules, as well as the development of drugs, materials, and technologies.

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Answer:

nu

Explanation:

It has five naturally occurring stable isotopes. The most common stable isotope of zinc is Zn-64. Zn-64 has such a long half-life that it radioactive properties are virtually non-existant. ... Zinc is a hard metal, but becomes very malleable above 100 degrees Celsius.

The correct answer to this question is ricin, a highly toxic protein with catalytic activity that has potential as an anticancer therapeutic agent.

Ricin is a toxin derived from the castor bean plant that has been studied for its potential to target cancer cells. The catalytic activity of ricin refers to its ability to break down specific molecules in cells, including those involved in cell growth and division. This makes it a promising candidate for cancer treatment, as it can potentially disrupt the growth of cancer cells. However, ricin is also highly toxic to normal cells and can cause serious harm, so further research is needed to determine its safety and effectiveness as an anticancer therapy.
The correct answer is e) ricin. Ricin is a highly toxic protein with catalytic activity, which gives it potential as an anticancer therapeutic agent. This protein, derived from the seeds of the castor oil plant, inhibits protein synthesis by inactivating ribosomes, which ultimately leads to cell death. Its high toxicity and targeted mechanism make it a potential candidate for developing anticancer treatments. However, it is essential to modify ricin or develop delivery systems that specifically target cancer cells to minimize side effects and harm to healthy cells. Researchers are working on this challenge, and there is ongoing interest in exploring the potential of ricin as an anticancer agent.

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To separate components using distillation, the substance with the higher vapor pressure is vaporized first, and then it is condensed.

Distillation is a separation technique used to purify liquids or to separate different components in a mixture based on their boiling points.

The process involves heating the mixture to convert the liquid with the lower boiling point into vapor, and then cooling and condensing the vapor to obtain the purified liquid.

Here's a step-by-step explanation of how components are separated using distillation:
1. The mixture is heated in a distillation flask. As the temperature rises, the substance with the lower boiling point begins to vaporize first.
2. The vapor rises and enters a condenser, which is a long tube cooled by running water. The condenser cools down the vapor, causing it to condense back into a liquid.
3. The condensed liquid, which is enriched with the substance with the lower boiling point, is collected in a separate container called the receiver.

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Earthquakes are created when tectonic plates rub, push, or pass each other. Tsunamis are made by earthquakes on the sea floor.

The increase or decrease in pressure will cause a shift in the equilibrium position of a chemical reaction.

The effect of pressure on equilibrium position of a chemical reaction can be explained using Le Chαtelier's principle.

According to Le Chαtelier's principle, as the pressure increases, the equilibrium position will shift to the side of the reaction with the fewer number of moles of gas, while a decrease in pressure shifts an equilibrium position to the side of the reaction with the greater number of moles of gas.

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