Draw the skeletal structure of an achiral 3° alkyl bromide with molecular formula c6h13br. There are multiple possible answers

When the electrons are not shared equally between bonding atoms, it forms a polar covalent bond. In a polar covalent bond, the electrons are unequally shared, resulting in a partial positive charge on one atom and a partial negative charge on the other atom.

In the case of a water molecule (H2O), oxygen is more electronegative than hydrogen, meaning it has a stronger pull on the shared electrons. As a result, the oxygen atom in water has a partial negative charge (δ-) due to the electron density being shifted towards it, while the hydrogen atoms have partial positive charges (δ+).

The polarity of the oxygen-hydrogen bonds in water leads to an overall polar molecule, where the oxygen end is slightly negative and the hydrogen end is slightly positive. This polarity gives water its unique properties, such as its ability to form hydrogen bonds, high boiling point, and strong cohesive forces.

Therefore, the covalent bond formed between hydrogen and oxygen in a water molecule is a polar covalent bond.

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The toxic chemicals is different from the safe chemical because the stronger attraction between it's molecule than the safe chemical.it molecule now move away from each. The correct option is C

Toxic chemical can be defined as a substance that can be poisonous or cause health effects. Some examples of toxic chemical include ammonia, acid, bleach, chlorine, and carbon monoxide.

Therefore toxins are substances created by plants and animals that are poisonous to humans. Toxins may also include some medicines that are helpful in small doses but poisonous in large amounts.

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The wavelength of the light is approximately 500 nm. The energy of the photon of light is approximately 6.56 x 10-20 J.

Answer: Question 1:The formula relating wavelength, frequency, and the speed of light is given by:c = fλHere,λ = wavelength, f = frequency, c = speed of lightI. n the problem, frequency is given as 5.98 x 1014 s-1. Therefore, using the formula, the wavelength of light can be calculated as follows:λ = c/f= (3 x 108 m/s)/(5.98 x 1014 s-1)≈ 500 nm

Therefore, the wavelength of the light is approximately 500 nm.

Question 2:The formula relating energy and frequency of light is given by:E = hfwhereE = energy of photonh = Planck's constant = 6.626 x 10-34 J s (Joule seconds)f = frequency of lightIn the problem, the frequency of light is given as 9.89 x 1013 Hz. Therefore, using the formula, the energy of the photon of light can be calculated as follows:E = hf= (6.626 x 10-34 J s) x (9.89 x 1013 Hz)≈ 6.56 x 10-20 J

Therefore, the energy of the photon of light is approximately 6.56 x 10-20 J.

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Answer:

1.196 M NaOH

Explanation:

Molarity = moles/Volume (L)

moles NaOH = mass NaOH/MM NaOH = 12/40.01 = 0.299 moles NaOH

Volume solution = 250 mL = 0.250L

M = 0.299/0.250=1.196 M NaOH

Answer:

3:1 or 3/1

Explanation:

Look at the coefficients then set up ratio. Simplify to the base numbers and you get 3/1 or 3:1. Thus, for every 3 MgO you produce 1 Mg3N2

The partial pressures of NO2, O2, and N2 can be found by multiplying the total pressure by the mole fraction of each gas component. The partial pressures of NO2, O2, and N2 are 0.60 atm, 0.66 atm, and 0.74 atm, respectively

Mole fraction is a unitless quantity used to express the ratio of the number of moles of a particular substance to the total number of moles in a mixture. It is defined as the ratio of the number of moles of a component in a mixture to the total number of moles of all components in the mixture. The mole fraction of a component can range from 0 to 1, and the sum of the mole fractions of all components in a mixture is always equal to 1.

First, we need to calculate the mole fractions of each gas component:
The mole fraction of NO2 = 0.300 (given)
The mole fraction of O2 = 0.330 (given)
The mole fraction of N2 = 0.368 (given)
The mole fraction of trace gases = 0.002 (calculated as 1 - sum of other mole fractions)
Next, we can calculate the partial pressures of each gas component:
The partial pressure of NO2 = 2.00 atm x 0.300 = 0.60 atm
The partial pressure of O2 = 2.00 atm x 0.330 = 0.66 atm
The partial pressure of N2 = 2.00 atm x 0.368 = 0.74 atm
Therefore, the partial pressures of NO2, O2, and N2 are 0.60 atm, 0.66 atm, and 0.74 atm, respectively.

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Answer:

Explanation:

(a) C5H5N(aq)+H2O(l)⇌C5H5NH+(aq)+OH−(aq)

Answer:

The answer is A  The energy released by heat in a chemical reaction

Explanation:

Answer:

Explanation:

\(\mathrm {Hey, there!}\)

Let's solve your problem -

The answer to the question is 4.18 10^7.

Here is my clarification/explanation to support:

To convert a standard number to scientific notation, we have to move the decimal point up until we have a 1 digit number.

When we keep moving the decimal point, we get 4.18

Now, we will count the numbers after the 8 to get the 10 area.

There are five numbers after the 8, so we get 10^5.

Now, we will add 2 more to the 5, we get 10^7

Our answer will be: 4.18 10^7

\(\mathrm {Best, of, Luck!}\)

12.5 mg of the tablet contains 2.58×10¹⁹ molecules of diphenhydramine hydrochloride, C₁₇H₂₂ClNO

From Avogadro's hypothesis,

Therefore,

1 mole of C₁₇H₂₂ClNO = 6.02×10²³ molecules

Next, we shall determine the mass (in mg) of 1 mole of C₁₇H₂₂ClNO. This can be obtained as follow:

1 mole of C₁₇H₂₂ClNO = (17×12) + (22×1) + 35.5 + 14 + 16

= 204 + 22 + 35.5 + 14 + 16

= 291.5 g

Multiply by 1000 to express in mg

291.5 × 1000 = 291500 mg

Thus,

Therefore,

291500 mg of C₁₇H₂₂ClNO = 6.02×10²³ molecules

Finally, we shall determine the number molecules in 12.5 mg of C₁₇H₂₂ClNO. This can be obtained as follow:

291500 mg of C₁₇H₂₂ClNO = 6.02×10²³ molecules

Therefore

12.5 mg of C₁₇H₂₂ClNO = \(\frac{12.5 * 6.02*10^{23}}{291500}\\\)

Therefore, we can conclude that 12.5 mg of the tablet contains 2.58×10¹⁹ molecules of diphenhydramine hydrochloride, C₁₇H₂₂ClNO

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Answer:

The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. ... If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.

Answer:

the total mass of the products in a chemical reaction will always be the same as the total mass of the reactants.

Explanation:

hope this helps :)

Answer:

I think its d

Explanation:

Because isotopes decay due to being unstable so if the daughter isotope is unstable it will just decay till it produces a stable isotope

Answer:

d. If the daughter isotope is unstable, it will decay

Explanation:

got it correct on quiz

Answer:

-It occurs naturally in the Sun.

-It released a large amount of energy.

-It involves the joining of two atomic nuclei.

It occurs naturally in the Sun.

It released a large amount of energy.

It involves the joining of two atomic nuclei.

Hence, options B, C and D are correct.

Nuclear fusion involves the fusion of 2 smaller nuclei into bigger nuclei.

Nuclear fission and nuclear fusion are nuclear reactions that produce energy in the form of heat. Fission is the process of the division of heavy, unstable nuclei into two nuclei, and in fusion two nuclei combine, resulting in the release of energy.

It occurs naturally in the Sun -The proton-proton fusion is the source of energy from the Sun. The energy from the sun occurs inside the core of the Sun.

It released a large amount of energy - Fission and fusion are two physical processes and produce large amounts of energy from atoms.

It involves the joining of two atomic nuclei - Nuclear fusion happens in the Sun and other stars when two atomic nuclei make one larger one.

Hence, options B, C and D are correct.

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Since we are starting from the number of atoms of Sulfur, we need to know two sets of formulas:

        ⇒ mass = (atoms ÷ Avogadro's Number) ×  molar mass

  mass = [(2.01 × 10²⁴ atoms) ÷ (6.022 × 10²³ atoms/mole)] × (32.06 g/mol)  

            = 107.01 g

The molar mass of sulfur S is 32.06 g/mol, then the mass in grams of a sample of S containing 2.01x10^24 atoms  is 107.01 g

The molar mass can be defined as the weight of one sample mole, by Multiplying  the subscript means  the number of atoms times that element’s atomic mass and add the masses of all the elements in the molecule to obtain the molecular mass.

Molar mass is  expressed in either gram ( g) or kilograms (kg).

Mass  = moles × molar mass

moles = atoms ÷ Avogadro's Number

       ⇒ mass = (atoms ÷ Avogadro's Number) ×  molar mass

 mass = [(2.01 × 10²⁴ atoms) ÷ (6.022 × 10²³ atoms/mole)] × (32.06 g/mol)  

          = 107.01 g

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Answer:

No

Explanation:

The conclusions from Thomoson's claims would be invalid if his experiment could not be replicated.

One of the attributes of a valid experiment in science is replication. That is, an experiment must be repeatable with similar outcomes under similar conditions as the original experiment when independently performed by another scientist. Once an experiment cannot be replicated, the outcomes of such an experiment become invalid in science.

Hence, Thomoson's conclusion would be invalid if his experiment could not be replicated.

Answer:

68 neutrons

Tin-118 has 68 neutrons and 50 protons, for a neutron-to-proton ratio of 1.36. As in part b, this value and the atomic number both suggest stability.

Answer:

That should be crucible tong

The rate of a reaction is determined by the quantity of energy required for the reactants to reach the transition state. Here option A is the correct answer.

The energy required for the reactants to reach the transition state is known as the activation energy (Ea). It represents the minimum energy needed for a chemical reaction to occur. The magnitude of the activation energy determines the rate at which the reaction proceeds.

A higher activation energy implies a slower reaction rate because it requires more energy for the reactant molecules to overcome the energy barrier and reach the transition state. Conversely, a lower activation energy allows the reactants to more readily reach the transition state, resulting in a faster reaction rate.

Option B is incorrect because enzymes actually lower the activation energy of a reaction, thereby facilitating the reaction and increasing the rate. Enzymes achieve this by providing an alternative reaction pathway with lower activation energy.

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The number of atoms of hydrogen in 12.26 pounds of sugar (C₆H₁₂O₆) is 2.23 × 10²⁶.

Given information,

Mass of sugar = 12.26 pounds

12.26 lb ÷ 2.20 lb/kg = 5.57 kg = 5570 grams

The molar mass of sugar = 12 × 6 + 1 × 12 + 16 × 6

Total molar mass = 72.06 + 12.12 + 96.00 = 180.18 g/mol

Number of moles of sugar = Mass / Molar mass

Number of moles = 5570 g / 180.18 g/mol = 30.89 mol

Number of moles of hydrogen = 30.89 mol × 12 = 370.68 mol

Number of atoms of hydrogen = The number of moles × Avogadro's number

Number of atoms of hydrogen = 370.68 × 6.022 × 10²³ ≈ 2.23 × 10²⁶ atoms

Therefore, there are approximately 2.23 × 10²⁶ atoms of hydrogen in 12.26 pounds of sugar (C₆H₁₂O₆).

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To solve this question we will assume that the moles of gas do not change and that the gas behaves like an ideal gas.

For an ideal gas we have that its behavior will be according to the following equation:

Where,

P is the pressure of the gas, in atm

V is the volume of the gas, in liters

n are the moles of the gas

T is the temperature of the gas, in Kelvin

R is a constant, 0.08206 atm.L/mol.K

We have for this gas two states, an initial state (1) and a final state (2), so for each state we can apply the ideal gas law, we will have:

Initial state:

Final state:

Since nR are constants, we can equate both equations:

For each state the conditions of pressure, volume and temperature will be:

P1=1.00atm

V1=195mL = 0.195L

T1=20°c = 293.15K

P2= 600mmHg=0.79atm

T2=60°C=333.15K

V2=Unknown

We clear V2 and replace the known data:

Answer: The final volume of the gas will be 280mL

Answer:

The acceleration of a moving object can be calculated by dividing the change in velocity by the change in TIME

Explanation:

Took the practice

According to the concept of significant figures,0.002  molecules of CO₂ per hundred molecules of air  are expressed as a concentration as 2 parts per thousand .

Significant figures are used for establishment  of a number which is presented in the form of digits. These digits give a meaningful representation  to the numbers.

The significant figures are the significant digits which convey the meaning according to the accuracy. These provide precision to the numbers and hence are called as significant numbers.There are rules for counting significant figures which are as follows:

1)All non-zero digits are significant .

2)All zeroes which occur between non-zero digits are significant.

3)All zeroes to the left and right of  a non-zero digit are not significant.

4) All zeroes on right  of decimal are significant if a non-zero number follows them.

5)All zeroes on right side of non-zero digit are significant.

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The feature that is NOT a part of Thompson's 'Raisin Pudding' model of the atom is a), the presence of a nucleus.

In this model, the electrons are dispersed throughout the atom (b), held in place by the positive charges in the atom (c) and the positive charge is also dispersed in a cloud about the atom (d). However, this model does not take into account the presence of a nucleus, which was later discovered by Rutherford. The nucleus is a central, positively charged region in the atom that contains most of the atom's mass.

It was discovered through the gold foil experiment where alpha particles were shot at a thin sheet of gold foil and it was observed that some particles were deflected. This led to the conclusion that the positively charged alpha particles were repelled by a dense, positively charged region in the atom which was later identified as the nucleus. Hence, Thompson's model does not include the presence of a nucleus which is a key feature of modern atomic theory.

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The property of ionic compounds that is important to support the function in the circulatory system is conductivity.

Conductivity is the ability of a material to conduct electricity or heat.

According to this question, the concentration of ionic substances is important for the heart to beat because our heart responds to electrical impulses that travel through heart cells that are made up mostly of water.

Ionic substances are known to have the ability to conduct electrical charges, hence, conductivity is an inspiration property of ionic compound that supports this function.

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Answer:

A.Experiments with cooking food showed that disease-carrying germs in food could be killed when heated.

Explanation:

Louis Pasteur (1822-1895) is regarded as the father of immunology. He extensively studied microbes and their effect on food. He discovered that microorganisms were responsible for the spoilage of food.

His most important discovery was the fact that heating wine to 55°C will lead to the death of microorganisms and prevented wine from spoiling and did not affect its taste. This process is known as pasteurization.

Answer:

A

Explanation:

\(\textbf{Question:-}\)

Why it is important to have balanced charges when forming ionic compounds?

✿\(\textbf{Answer:-}\)

✿\(\textbf{More to know:-}\)

Answer:

C

Explanation:

For electromagnetic waves frequency X wavelength = speed of light

                                                f * 2.2 x 10^-11  = 3 x 10^8  m/s

                                         f = 3 x 10^8 / 2.2 x 10^-11

                                            = 1.36 x 10 ^19

                                             = 1.4 x 10^19   with two significant digits

Answer: it's not C, it is A.

Answer: stepper mother is good for that

Explanation: