Dr. Laila Malik has been tasked to help her graduate student with making a ground-breaking molecule, but she has to start with helping the student understand how different elements bond to each other and the characteristics they have. Help Dr. Malik identify whether the compound is polar or non-polar: AgBr

The name for the compound SnO is tin(II) oxide. Therefore, option B is correct.

A chemical compound is a material that contains atoms from many chemical elements bonded together by chemical bonds. It is made up of numerous similar molecules. Hence, a molecule made up of only one type of atom is not a compound.

The difference in electronegativity between the electronegative O and the somewhat electropositive Sn is 1.48, which suggests that the bond between SnO is polar covalent.

The name of the compound SnO is tin monoxide.

Thus, the compound SnO is tin(II) oxide, option B is correct.

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Answer:

5.61 e⁻³

Explanation:

Given that:

The barrier length = 0.681 nm = 6.81 × 10⁻¹⁰

The difference between the height of the barrier & the energy of the electron is;

\(V - E = 0.554 \ eV (1.6 \times 10^{-19} )\)

= 8.864 × 10⁻²⁰ V

where;

m = 9.1 × 10⁻³¹ kg

The probability\(P = e^{-2 \ kd}\)

\(k = 2 \pi \sqrt{\dfrac{2m (V-E)}{h^2} }\)

\(k = 2 \pi \times \dfrac{\sqrt{2 \times 9.1 \times 10^{-31} \times 8.864 \times 10^{-20}}}{6.63 \times 10^{-34}}\)

k = 3.806 × 10⁹

\(P = e^{-2 \ kd}\)

\(P = e^{2 \times 3.806 \times 10^9 \times 6.81 \times 10^{-10}}\)

P = 0.005606

P = 5.61 × 10⁻³

P = 5.61 e⁻³

Answer:

Explanation:

From the information given, we are to show the product of the reaction between the alcohol (stick formula) with pyridinium chlorochromate. The reaction starts with the nucleophilic addition of Cr with oxygen molecule on the alcohol. Then, deprotonation of oxygen occurs, this process is followed by the removal of hydrogen ion to yield the final product. The reaction mechanism can be seen from the attached image below.

Answer:

IM NOT TO SURE ABOUT THIS DO YOU HAVE THE DIAGRAM

Explanation:

The molecular formula is (CH2O)5 when the scale factor is 5 and the empirical formula is CH2O.

Considering the question given above, the following data were obtained:

Empirical formula is CH₂O

Molar mass of compound = 150 g/mol

Scaling factor (n) =?

Empirical formula × n = molar mass

[CH₂O]n = 150

[12 + (2×1) + 16]n = 150

[12 + 2 + 16]n = 150

30n = 150

Divide both sides by 30

n = 5

Therefore, the scaling factor is 5

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Answer:

The scale factor is 5. The formula is CH2O.

Multiply each by 5.

So:

C (there is only one)= 1×5

H (there are 2)= 2×5

O(there is only one)= 1×5

Equalling= C5H10O5

Answer:

All of above.

Explanation:

Stars. They come in different sizes, temperatures, and colors. Not all are yellow, and not all are small or big. Some can be hot, and others can be cold. Stars can exist for a while, years on end. It just varies on how long it's been there.

I hope this helps you!

Decreasing the separation between the two magnets will result in increase in the magnetic force between two magnets.

This is referred to a substance which produces magnetic field and result in the attraction and repulsion of certain types  of things.

Increase in the separation will reduce the magnetic force and vice versa which is why option A was chosen.

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Answer:

double bond

Explanation:

Sometimes two covalent bonds are formed between two atoms by each atom sharing two electrons, for a total of four shared electrons. For example, in the formation of the oxygen molecule, each atom of oxygen forms two bonds to the other oxygen atom, producing the molecule O2. Similarly, in carbon dioxide (CO2), two double bonds are formed between the carbon and each of the two oxygen atoms

The effect on the acceleration of the 15-kg box would be that it would experience a greater acceleration than the 30-kg box.

According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Therefore, for a given force, an object with a smaller mass will experience a greater acceleration than an object with a larger mass.

In this scenario, if the student applies the same force to both the 30-kg box and the 15-kg box, the 15-kg box will experience a greater acceleration than the 30-kg box. This is because the smaller mass of the 15-kg box means that it has less inertia and requires less force to accelerate.

Therefore, the effect on the acceleration of the 15-kg box would be that it would experience a greater acceleration than the 30-kg box.

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Answer:

Explanation:

During sexual reproduction the two gametes join together in a fusion process known as fertilization, to create a zygote, which is the precursor to an embryo offspring, taking half of its DNA from each of its parents. In humans, a zygote contains 46 chromosomes: 23 from its mother and 23 from its father

We can be able to determine the amount of toxic lead in the water by thee use of  atomic absorption spectrophotometry.

A toxic metal is known as any metal that is able to affect the health of people. We know that toxic metals are mostly the metals that are in the group of the heavy metals.

Now we know lead as a metal that is able to cause brain damage especially in children. This is why it is very important that there should be a thorough examination in order to know the amount of lead that is present in water.

There are several methods that could be applied in the determination of lead and one of the most common methods is by the use of atomic absorption spectrophotometry which is able to detect even the minutest amount of the led in solution.

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The number of moles in 5.00 × 10²³ formula units of BaBr₂ is approximately 0.83 moles, calculated by dividing the given number of formula units by Avogadro's number (6.022 × 10²³).

To determine the number of moles in 5.00 × 10²³ formula units of BaBr₂, you have to know the Avogadro's number, which is 6.022 × 10²³ formula units per mole.

Therefore, using Avogadro's number, you divide the given number of formula units by this value. So, the calculation is as follows: 5.00 × 10²³ formula units / 6.022 × 10²³ formula units per mole = 0.83 moles of BaBr₂.

So, there are approximately 0.83 moles in 5.00 × 10²³ formula units of BaBr₂.

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Answer: is that a question or

Explanation:

Answer:

its c

Explanation:

Answer:

1 mole of Fe is 55.85 g per mole

Explanation:

hope it helps

The moles of hydrogen that are needed to make 30 moles of Fe is 45 moles.

Moles is a measurement unit. It is the quantity amount of substance.

The balanced equation is

Fe2O3 + 3H2 ---> 2Fe + 3H2O

Given the moles of iron is 30

To find the moles of hydrogen is?

According to the given balanced equation, the ratio of moles of hydrogen and iron is 3 : 2

To produce 30 moles of Fe

30 x 3 / 2 = 45 moles.

Thus, the number of moles of hydrogen is 45 moles.

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Your question is incomplete. Your most probably complete question is given below:

One way to change iron are, Fe2O3, into metallic iron is to heat it together with hydrogen:

Fe2O3 + 3H2 ---> 2Fe + 3H2O

The change in entropy for the crystallization of 1.25 moles of butane can be calculated using the formula ΔS = ΔH_fusion / T, where ΔS is the change in entropy, ΔH_fusion is the enthalpy of fusion, and T is the temperature in Kelvin.

In the given problem, the enthalpy of fusion of butane is 24.3 kJ/mol. To convert this to J/mol, we multiply it by 1000, resulting in 24,300 J/mol. The melting point of butane is -0.5°C, which is equivalent to 272.65 K.

Using the formula, we can calculate the change in entropy as follows:

ΔS = (24,300 J/mol) / 272.65 K

    ≈ 89.25 J/(mol·K)

Therefore, the change in entropy for the crystallization of 1.25 moles of butane is approximately 89.25 J/(mol·K).

The change in entropy (ΔS) for the crystallization of a substance can be determined using the equation ΔS = ΔH_fusion / T, where ΔH_fusion is the enthalpy of fusion and T is the temperature in Kelvin. In this case, the enthalpy of fusion of butane is given as 24.3 kJ/mol, which is converted to 24,300 J/mol. The melting point of butane is -0.5°C, which is equivalent to 272.65 K.

By substituting the values into the equation, we find that the change in entropy is approximately 89.25 J/(mol·K). This means that for the crystallization of 1.25 moles of butane, the entropy decreases by 89.25 J/(mol·K).

Entropy is a measure of the disorder or randomness of a system. In this case, the crystallization process involves the transition from a disordered liquid state to an ordered solid state, resulting in a decrease in entropy. The magnitude of the entropy change depends on the enthalpy of fusion and the temperature. A higher enthalpy of fusion or a lower temperature leads to a larger change in entropy.

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Answer:

Explanation:

The average speed of a body can be found by using the formula

\(Average \: \: speed = \frac{distance}{time} \)

To find the average speed in km/h first convert the distance from m to km and the seconds from s to hr.

For the distance

2000 m

1000 m = 1 km

2000 m = 2000/1000 = 2 km

For the seconds

21.9 s

3600 s = 1 hr

21.9 s = 21.9/3600 = 0.006 hrs

Substitute the values into the above formula and solve for the Average speed

That's

\(Average \: \: speed = \frac{2}{0.006} \)

We have the final answer as

Average speed = 333.3 km/hr

Hope this helps you

Option B. irradiating wheat to kill fungus is an example of agricultural use for radiation.

The relative significance of agricultural use for radiation is based on the fact that radiation is a physic mutagenic agent and therefore it can be sued to produce mutations in undesired organisms in order to kill them.

Therefore, with this data, we can see that the relative significance of agricultural use for radiation is based on the generation of triggered mutations in undesired organisms such as plagues.

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Answer:

\(V=1.3x10^5cm^3\)

Explanation:

Hello,

In this case, since the volume is obtained by multiplying the length, width and height of the box:

\(V=W*L*H\)

Given each dimension we find:

\(V=423cm*12cm*25cm\\\\V=126900cm^3\)

Nevertheless, since the shortest number is 12, we need to show the volume with two significant figures and in scientific notation as follows:

\(V=1.3x10^5cm^3\)

Best regards.

Answer:

0.34 x 0.568 = [0.19312]

Explanation:

just multiply it

Answer: 0.19

Explanation: 0.34 x 0.568 = 0.19312. this answer does not have the correct amount of significant figures though, so you have to round. 0.568 has 3 significant figures, and 0.34 has 2 significant figures. you always want to round to the smaller amount of significant figures, which is two in this case. 0.19312 rounds down to 0.19.

Answer:

Explanation:

A

We can see here that the catalytic cycle for the hydrogenation of alkenes using Wilkinson's catalyst involves several steps.

Here's an overview of the catalytic cycle, including the necessary details:

i. Chemical structure of the catalyst:

Wilkinson's catalyst, also known as chloridotris(triphenylphosphine)rhodium(I), has the following chemical structure: [RhCl(PPh3)3]

ii. Molecular geometry of the catalyst:

The Wilkinson's catalyst has a trigonal bipyramidal geometry around the rhodium center. The three triphenylphosphine (PPh3) ligands occupy equatorial positions, while the chloride (Cl) ligand occupies an axial position.

iii. Type of reactions involved:

The catalytic cycle involves several reactions, including:

iv. Starting material, reagent, and solvent:

The starting material is an alkene, and the reagent is Wilkinson's catalyst ([RhCl(PPh3)3]). The reaction is typically carried out in a suitable solvent, such as dichloromethane (CH2Cl2) or tetrahydrofuran (THF).

v. Major and minor end-products:

The major end-product of the hydrogenation reaction is the fully saturated alkane, resulting from the addition of hydrogen across the double bond. The minor end-product may include cis- or trans-configured alkanes if the original alkene substrate possesses geometric isomers.

vi. Intermediates:

The intermediates in the catalytic cycle include:

These intermediates play a crucial role in facilitating the hydrogenation reaction and enabling the catalytic cycle to proceed.

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Answer:

A mixture!

Explanation:

Mixtures are a substance made of combining two or more different kinds of matter :)

Hope this helped!

Answer:

you find your bmi by dividing your weight in kg by your height in Meters then square it

this is the formula kg/m2

Explanation:

The reaction order and specific reaction rate constant can be determined by performing the kinetics experiment on irreversible polymerization A. Kinetic experiments can be used to investigate the rate and mechanism of chemical reactions. Chemical kinetics is the study of chemical reactions' speed and pathway.

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The number that is the same as the exponentiation given as follows: 2.5 × 10-³ is 0.0025.

Exponentiation is the process of calculating a power by multiplying together a number of equal factors, where the exponent specifies the number of factors to multiply.

For example, if 10 is multiplied three times, then it can be written as "10 raised to 3" which means 10³. In this case, 10 is the base, and 3 is the exponent.

Therefore, a number 0.0025 can be written in exponentiation as 2.5 × 10-³ by counting the number of zeros forward.

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Answer:

C: 0.78 V

Explanation:

The Cr2O7 cell has a higher reduction potential, so it will be reduced (as it is a better oxidizing agent). This means that Fe will be oxidized. Its oxidation potential is simply the negative of its reduction potential, 0.45: \(E_{ox}=-0.45\). We know that cell potential is the sum of the reduction and oxidation potentials of each reaction (it is not an extensive property like enthalpy or entropy, so we don't need to worry about multiplying anything). Therefore, \(E_{cell}=(-0.45+1.23)V=0.78V\).

Answer:

With the changes in atmospheric pressure, the gas laws also change accordingly, that is, the Charle's law, the Boyle's law, the Ideal Gas Law, and the Gay-Lussac's law changes with the change in atmospheric pressure. Therefore, the planets, which exhibits the constant value of atmospheric pressure will be more reliable, and those possessing different atmosphere or no atmosphere will be the least reliable.

The temperature of the oxygen gas sample is 609 K, which is approximately 336°C or 637°F. The answer is A.

We can use the ideal gas law equation, PV = nRT, to solve for the temperature of the oxygen gas sample.

First, we need to calculate the number of moles of oxygen gas present in the sample using its mass and molar mass:

n = m/M

where:

n = number of moles

m = mass (in grams)

M = molar mass (in g/mol)

The molar mass of oxygen gas (O2) is 32.00 g/mol.

n = 48 g / 32.00 g/mol = 1.50 mol

Next, we can rearrange the ideal gas law equation to solve for temperature (T):

T = (PV) / (nR)

where:

T = temperature (in Kelvin)

P = pressure (in atm)

V = volume (in liters)

n = number of moles

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

Plugging in the given values, we get:

T = (3.0 atm x 25 L) / (1.50 mol x 0.0821 L atm/mol K)

T = 609 K

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