LeChatlier's Principle
1. For the following reaction
5 CO(g) + 1205(s) 12(g) + 5 CO2(g)
DA
Direction
of Shift
Change
(right; left; or no shift)
(a) decrease in volume
(b) raise temperature
(c) addition of 1205(s)
(d) addition of CO2(g)
© removal of 12(g)
Blandt
AAHo--1175 kJ
Super
Effect on
Quantity
Kc
amount of CO(g)
amount of CO(g)
amount of 1205(s)
amount of CO2(g)
Effect
(increase, decrease,
or no change)

Answer:

The mass of O₂ that will be needed to burn 36.1 g B₂H₆ is 125.29 g.

Grignard synthesis of the alcohol shown involves the following reaction: CH2CH2Br + Mg + 2(C2H5)2O → CH2CH2MgBr + 2C2H5OHWhen we compare the equation with the reagents available, we can see that it requires CH2CH2Br and two molecules of C2H5OH.

From these, CH2CH2OH is synthesized. As the equation suggests that CH2CH2Br is the alkyl halide used, we can add CH2CH2Br and an aldehyde or ketone as a reactant. To draw the structural formulas for the reaction, follow the below guidelines: Step 1: Add an aldehyde or ketone Aldehydes and ketones are organic compounds containing carbonyl groups. They have the following formula: RCHO (aldehyde) and R2CO (ketone), respectively. An example of an aldehyde is formaldehyde, which has a structural formula HCHO. When we add HCHO to the reaction, the structural formula for the reactant becomes: CH2O.Step 2: Add an alkyl or aryl bromide The next step is to add an alkyl or aryl bromide to the reactant. An alkyl bromide is an organic compound containing a carbon-bromine bond, while an aryl bromide contains a bromine atom attached to an aromatic ring. The simplest example of an alkyl bromide is CH3Br, while the simplest aryl bromide is bromobenzene (C6H5Br). For this reaction, we will add CH2CH2Br as the alkyl bromide. The structural formula for the reactant becomes: CH2CH2Br + CH2OHere is the required structural formula in 100 words. The Grignard synthesis of the alcohol shown in the equation CH2CH2Br + Mg + 2(C2H5)2O → CH2CH2MgBr + 2C2H5OH requires CH2CH2Br and two molecules of C2H5OH. Therefore, we can add CH2CH2Br and an aldehyde or ketone to form the desired alcohol. For this purpose, we will use HCHO as an aldehyde and CH2CH2Br as an alkyl bromide. The structural formula for the reactant will be CH2CH2Br + CH2O.

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Answer:

Fe(s) + Cu2+(aq) ===> Fe2+(aq) + Cu(s)

Answer:

2CuFeS2+2SiO2+4O2→Cu2S+2FeSiO3+3SO2(1)

Explanation:

2CuFeS2+2SiO2+4O2→Cu2S+2FeSiO3+3SO2(1)

Yes, an electron cause an electromagnetic wave to vibrate.

One of the waves is propagated by simultaneous periodic variations of electric and magnetic field intensity and that includes radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Electromagnetic waves are produced when something vibrates—an electric charge that moves back and forth.

When an electric charge vibrates, the electric field around it changes. Because the electric charge is in motion, it also has a magnetic field around it.

This magnetic field also changes as the charge vibrates.

Therefore, an electron causes an electromagnetic wave to vibrate.

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Nuclear chemist is most concerned with the study of radioactive isotopes.

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Answer:

Number of protons = 82

Explanation:

Given data:

Atomic number of Pb = 82

Mass number of Pb-207 = 207

Number of protons = ?

Solution:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.

Atomic number of Pb = number of protons or electrons

82 = number of protons or electrons

Mass number = Number of protons + number of neutron

207 = 82 + number of neutron

Number of neutrons = 207 - 82

Number of neutrons = 125

55.845 g/mol of the mass of cans in the box we brought had a mass of 23kg. 411.74 mol moles we have.

To determine the number of moles of tin cans you have, we need to know the molar mass of the metal that the cans are made of. Tin cans are usually made of steel, which is an alloy made primarily of iron and carbon, with small amounts of other elements.

To convert the mass of the cans (23 kg) to moles, we need to use the following formula:

moles = mass / molar mass

moles = 23,000 g / 55.845 g/mol = 411.74 mol

Therefore, the number of moles of iron in the 23 kg of tin cans is approximately 411.74 mol.

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Answer:

sorry i can't figure out the exact answer but i think it is 2amu if it is wrong again i'm so sorry

Explanation:

Hydrogen has three isotopes, which include hydrogen, deuterium, and tritium with atomic masses of about 1 amu, 2 amu, and 3 amu. Then the average atomic mass will be 2 amu. Thus option b is correct.

Isotopes are defined as a variation of an element that posses same atomic number but different atomic mass.

Isotopes has nearly same chemical behavior by different physical properties.
It can also be defined as the variant of chemical elements that posses same number of protons and electrons but different number of neutrons.

Radioactive isotopes are used in agriculture, food processing, pest control, archaeology and medicines.

Thus, Hydrogen has three isotopes, which include hydrogen, deuterium, and tritium with atomic masses of about 1 amu, 2 amu, and 3 amu. Then the average atomic mass will be 2 amu. Thus option b is correct.

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Your question is incomplete but probably your fell question was

Hydrogen has three isotopes, which include hydrogen, deuterium, and tritium with atomic masses of about 1 amu, 2 amu, and 3 amu, respectively. Considering the average atomic mass of hydrogen that appears on the Periodic Table, which statement is correct?

a. 1.5 amu

b. 2 amu

c. 3 amu

d. 1.01 amu

Answer:

Increasing the temperature

Increasing particle size

Explanation:

Increasing the temperature allows for particles and molecules to move faster (because there is an increase in energy) and allows for more collisions.

∴ Increasing the temperature would be an answer.

Increasing the particle size allows for more surface area and a greater chance for particles to collide with each other.

∴ Increasing particle size would be an answer.

Topic: AP Chemistry

Unit: Kinetics

The statement is accurate about dominant alleles is they are expressed whenever present.

The relation between two versions of a gene are called as dominant. when the individual receive the two version of gene of each parent of gene known as alleles. if gene of alleles are different , one allele will be expressed as the dominant gene. Dominant alleles are expressed as phenotypic cell. Dominant alleles are indicated by the uppercase of a letter. so the dominant allele is that will be more powerful than the another allele.

Thus, The statement is accurate about dominant alleles is they are expressed whenever present.

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Answer:

they are very dangerous.

Explanation:

they cause disease in humans, animals, crops, and can cause permanent damage to immune systems.

Answer:

viruses can shut your immune system and infect blood cells thus killing you. vaccines will provent this by prepering your immune system so when you get said virus, it will reduce your chance of death

Explanation:

im not smart with health but i hope this is correct!

Un elemento químico, o un elemento, se define como un material que no puede descomponerse ni transformarse en otra sustancia por medios químicos. Cada elemento se identifica según la cantidad de protones que tiene en su núcleo atómico. Se puede crear un nuevo elemento agregando más protones a un átomo.

_________

Espero eso ayude ⚜

ITZY :)

The student's percent error is 0.25% when they accidentally go one drop past the endpoint in a titration where the net volume should be 20.00 mL. This means that the measured value exceeds the desired value by approximately 0.05 mL, resulting in a small but measurable percent deviation from the expected volume.

To calculate the percent error, we need to compare the difference between the measured volume and the expected volume (20.00 ml) to the expected volume and express it as a percentage. In this case, the student went one drop past the endpoint, which is approximately 0.05 ml. Therefore, the measured volume is 20.05 ml.

The percent error formula is given by:

Percent Error = (|Measured Value - Expected Value| / Expected Value) × 100%

Substituting the values:

Percent Error = (|20.05 ml - 20.00 ml| / 20.00 ml) × 100%

Percent Error = (0.05 ml / 20.00 ml) × 100%

Percent Error = 0.0025 × 100%

Percent Error ≈ 0.25%

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Answer:

ionic covalent

Explanation:

7.92g of FeSO4 • 6H2O is equal to 1.55 x 10^23 molecules.

Molecules are the smallest units of matter that can exist by themselves. They are composed of two or more atoms that are held together by chemical bonds. Molecules can be found in the air we breathe, the water we drink, and the food we eat. They can also be found in living organisms, like plants and animals. Molecules can be made of a variety of different atoms, such as oxygen, carbon, nitrogen, and hydrogen. They also come in different shapes and sizes, depending on the types of atoms they are composed of.

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Answer:

sunscreens helps of nut burning and the weakness it has polymen so it's bas

Answer:

I think B sorry if wrong

Explanation:

have a good day

387.27 K temperature will the reaction proceed 6.00 times faster than it did at 337 K.

k2 is 6 times k1 and hence k2/k1 = 6

we have ln(k2/k1) = Ea/R (1/T1- 1/T2)

ln(6) = 38670/8.314 x( 1/337 -1/T2)

0.00038522 = (1/337 -1/T2)

1/T2 = 0.0033525

T2 = 387.27 K

In chemistry and physics, activation electricity is the minimal amount of electricity that has to be supplied for compounds to result in a chemical reaction. The activation energy of a reaction is measured in joules per mole, kilojoules in keeping with mole, or kilocalories consistent with mole.

Activation strength is described as the minimum quantity of strength required via a reacting molecule to get transformed into a product. it may additionally be defined because the minimal amount of energy had to prompt or energize molecules or atoms in an effort to go through a chemical reaction or transformation. In transition-state theory, activation electricity is the distinction in electricity content material between atoms or molecules in an activated or transition-country configuration and the corresponding atoms and molecules in their initial configuration.

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Complete Question:

A certain reaction has an activation energy of 38.67 kJ/mol. At what Kelvin temperature will the reaction proceed 6.00 times faster than it did at 337 K?

The correct answer is actually

D. requires a lot of energy to become hot.

As the definition of specific heat is "the heat required to raise the temperature of the unit mass of a given substance by a given amount."

The final volume of the gas at a temperature of 227°C and a pressure of 1013 kPa is 10.44 L.

The final volume of gas, V2, can be determined using the ideal gas law equation \(PV = nRT\).

Given the initial volume, temperature, and pressure, we can calculate the number of moles of gas, n, and then use it to find the final volume.

First, we need to find the number of moles of gas using the equation \(n = PV/RT\).

Substituting the given values, we get \(n = (557.15 \, \text{kPa} \times 1.5 \, \text{L}) / (8.314 \, \text{kPa} \cdot \text{L/mol} \cdot \text{K} \times 300 \, \text{K}) = 0.2535 \, \text{mol}\).

Now that we have the value of n, we can use it to find the final volume of gas using the equation \(V2 = (n \times R \times T2) / P2\).

Substituting the given values, we get \(V2 = (0.2535 \, \text{mol} \times 8.314 \, \text{kPa} \cdot \text{L/mol} \cdot \text{K} \times 500 \, \text{K}) / 1013 \, \text{kPa} = 10.44 \, \text{L}\).

Final volume of the gas at a temperature of 227°C with the pressure of 1013 kPa is 10.44 L.

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Answer:

B:Selective breeding

Explanation:

Selective breeding is when someone picks animals with desired traits. A example would be cows, if you want cows offspring to produce more milk than you would select cows that are producing the greatest amount of milk at the moment.

Given data:H2O vapor content: 13 gramsH2O vapor capacity: 52 grams at 25 degrees Celsius 13 grams at 10∘C52 grams at 30∘CFormula used to find the dew point:$$\dfrac{13}{52}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$\frac{1}{4}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$

Where A is the constantDew Point:It is the temperature at which air becomes saturated with water vapor when the temperature drops to a point where dew, frost or ice forms. To solve this question, substitute the given data into the formula.$$13/52=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$13(17.27-A)=3\pi A(ln100)$$By simplifying the above expression, we get$$A^2-17.27A+64.78=0$$Using the quadratic formula, we get$$A=9.9,7.4$$

The dew point is 7.4 since it is less than 10°C.More than 100:The term "More than 100" has not been used in the question provided.

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Explanation:

Donate to their twitch and become a tier 5 sub.

Answer:

15oC to K

oC +273

15+273

288K

Generally, the quantum mechanical approach to atomic structure permits the calculation of a region about the nucleus in which an electron of specified energy will probably be found.

By the help of quantum mechanics we can easily find the wave function that describes the movement of the particles, the interpretation of this wave function is done through the probability density (φ* φ).

This probabilistic interpretation of the energies, position and amounts of motion electrons often allow us to find the region around the nucleus where an electron of specific energy can be found with a given probability.

Hence, option B is correct.

The given question is incomplete and the complete question is given below.

The quantum mechanical approach to atomic structure permits the calculation of?

1. the most probable distance between any two specified electrons.

2. a region about the nucleus in which an electron of specified energy will probably be found.

3. the most probable radius of an orbit that an electron of specified energy will follow.

4. the most probable spin value that will be associated with an electron of specified energy.

5. the number of electrons in an atom.

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Answer:

45

Explanation:

There are 12 Carbons

There are 22 Hydrogens

There are 11 Oxygens.

I think the answer is either 0 or 45. But the wording is very sloppy. It is not really atoms that are present. There are ions.

Go with 45 but hold your nose when writing your answer.

Explanation:

no of moles = mass / molar mass

mr of Al ( OH)3 = 27+ (16 × 3) + (1 ×3)

= 78

n = 384.3 / 78

n = 4.92692...

n = 4.93

therefore, no of moles = 4.93