Bombardment of boron-10 with a neutron produces a hydrogen-1 atom and another nuclide. what is this nuclide?

If you use the molecular orbital theory, option C, which is the paramagnetism of oxygen particles, you can explain the odd thing that Lewis structures can't explain.

The fact that oxygen particles are paramagnetic doesn't make sense in terms of Lewis structure. Since oxygen atoms have two electrons that don't have a partner, only molecular orbital theory can explain why oxygen particles are paramagnets. A Lewis structure is a much better way to show how the electrons in a particle's valence shell are arranged. It is used to show how the electrons around the different atoms in a particle are arranged. Electrons are shown as "dabs" or as a line running between two particles. In his cubical particle hypothesis, Lewis came up with the "octet rule." The octet rule is based on the fact that iotas tend to like having eight electrons in their valence shell. When molecules have fewer than eight electrons, they usually react by making more stable mixtures. Atoms will act to get into the most stable state possible.

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The mass of the iron will produce is equal to 11.16 grams and iron oxide will be the limiting reagent.

A limiting reagent can be explained as the reactant present in the chemical reaction which is consumed completely first during the completion of a reaction.

The limiting reagent in a chemical reaction decides the amount of the product when the reactants are not taken in stoichiometry.

Given, chemical reaction of iron oxide and aluminum represented as:\(Fe_2O_3 + 2Al \longrightarrow Al_2O_3 + 2Fe\)is:

The mass of the iron oxide = 16 g

The number of moles of iron oxide = 16/159.7 = 0.1 moles

The mass of aluminum powder = 8.1 g

The number of moles of Al = 8.1/27 = 0.3 mol

The 2 moles of Al react with iron oxide = 1

0.3 moles of Al react with iron oxide = 0.3/2 = 0.15 mol

Therefore iron oxide is a limiting reagent.

One mole of iron oxide will produce iron = 2 mol

0.1 mol of iron oxide will produce iron metal = 2 × 0.1 = 0.2 mol

The maximum mass of iron metal = 0.2 ×55.8 = 11.16 g

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The distance travelled by the particle between 0 seconds and 6 seconds is 12 m

Velocity is simply defined as the rate of change of displacement with time. Mathematically, it can be expressed as:

Velocity = displacement / time

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

Velocity = displacement / time

The displacement of the object between 0 and 6 s is calculated as;

2 = displacement / 6

Cross multiply

Displacement = 2 × 6

Displacement = 12 m

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Then attraction holds individual covalent molecules together as a solid are the force that hold the atom together if the each atom nucleus for the shared pair of electrons. the covalent compounds have very low melting point and boiling point.

The covalent bond form between the atoms by the sharing of electron. when there is no much difference in electronegativity of the atoms then the electrons are equally shared between two atoms. the mutual sharing of electrons formed covalent bond . the compound is called as covalent compound or molecules.  the molecules held by very weak intermolecular forces and it is very easy to break them . so, they have low melting point and boiling point.

Thus, Then attraction holds individual covalent molecules together as a solid are the force that hold the atom together if the each atom nucleus for the shared pair of electrons .the covalent compounds have very low melting point and boiling point.

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Answer:a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Explanation: Do you mean definition, because if you do here is the definition of a hypothesis, also it would help if you went into further detail of what the hypothesis is for.

The number of moles of iron needed to react with 16.0 moles of sulfur is 128.0 moles.

The term mole is defined as  a standard scientific unit for measuring large quantities of very small particles such as atoms, molecules, or other specified particles.

one mole is equal to 6.023 × 10²³ molecules.

To calculate of number of moles of iron

Given equation as follows:

8Fe + S8 ⇒ 8 FeS

Moles of sulfur = 16.0

To react 1 mole of sulfur, we need 8 moles of Fe

Then, for 16.0 moles of sulfur we need

= 16 × 8

= 128 moles

Thus, the number of moles of iron needed to react with 16.0 grams of sulfur is 128 moles.

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Answer:

To minimize the intake of fats and oils by suggesting them simple ways-

Explanation:  FATS -: Fats are usually derived from animals. Fats contain a larger proportion of fatty acids that are saturated. Fats at room temperature are solid.

 OILS - Oils at room temperature are liquid.  From plants, oils are extracted.   A greater proportion of unsaturated fatty acids are found in oils.

Given, Number of moles of helium gas = 18.75Temperature of gas = 10 °C. Gauge pressure of gas = 0.350 atm.

Using ideal gas law, PV = nRT, where, P = pressure of gas, V = volume of gas, n = number of moles of gasR = gas constant, T = temperature of gas(a) The volume of the helium gas under these condition can be calculated using the ideal gas law as follows: PV = nRTV = (nRT)/P

Put the values, P = 0.350 atm, V = ?n = 18.75 molesR = 0.08206 L atm K-1 mol-1T = (10+273)K = 283KTaking all the values in equation,V = (18.75 × 0.08206 × 283) / 0.350V = 1296.26 L. Therefore, the volume of helium gas at the given condition is 1296.26 L.(b) The temperature of the gas can be calculated as follows: If the gas is compressed to half the volume, the final volume is V/2 = 1296.26/2 = 648.13 L. The new gauge pressure is 1.00 atm. Using the ideal gas law, PV = nRT(Temperature remains the same as the gas is compressed at constant temperature)T = (PV)/(nR)

Put the values,P = 1.00 atmV = 648.13 Ln = 18.75 moles R = 0.08206 L atm K-1 mol-1T = (1.00 × 648.13) / (18.75 × 0.08206)T = 245.5 K. Therefore, the temperature of the gas when it is compressed to precisely half the volume at a gauge pressure of 1.00 atm is 245.5 K.

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Answer:

8 atoms it have but u don't know

This process is described as exothermic, with the release of energy.

Temperature is a bodily amount that expresses quantitatively the perceptions of hotness and coldness. Temperature is measured with a thermometer. Thermometers are calibrated in various temperature scales that historically have trusted diverse reference points and thermometric substances for definition.

Temperature performs a essential function in hospital treatment (each human beings and animals), meals, liquids, and agriculture. Our common health is frequently reliant upon temperature in many approaches as nicely. Retaining right temperature levels in clinical bloodless garage areas is vital.

Air temperature is measured by thermometers. Not unusual thermometers encompass a pitcher rod with a completely skinny tube in it. The tube contains a liquid this is furnished from a reservoir, or "bulb," at the base of the thermometer.

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Answer:

The low molecular weight of water makes water a favorable liquid for steaming

Without knowing the desired pH of the buffer, we cannot calculate the exact amount of NaOH solution required to produce the buffer. However, we can outline the general steps to solve this problem once the desired pH is known.

        pH = pKa + log([A-]/[HA])

       Rearrange the equation to solve for [A-]/[HA]:

       [A-]/[HA] = 10\(^(pH - pKa)\)

       Therefore, the volume of NaOH solution required can be calculated as:Volume of NaOH solution (in liters) = moles of lactate / 1.000 M

       This volume can be converted to microliters if desired.

Again, note that it is important to add the NaOH solution slowly and carefully while monitoring the pH to avoid overshooting the desired pH of the buffer.

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Hi! Element "t" does not exist in the periodic table.  

The known chemical elements are listed in the periodic chart in increasing atomic number order. Elements that have comparable chemical and physical properties are grouped together in columns referred to as "groups" in the table's rows and columns. The periodic table has 18 groups, numbered from 1 to 18.

In chemical equations and formulas, each element in the periodic table is represented by a distinct symbol made up of one or two letters. For instance, the letters "H" and "He" stand for hydrogen, "C" stands for carbon, and so on.

If you could provide me with more information about the element you are referring to, such as its full name or its atomic number, I would be happy to help you locate it on the periodic table and tell you which group it belongs to.

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Answer:

C2H3O

Explanation:

Use mass to find percentage composition

Find empical formula

Answer:

Option C (6750 J) is the appropriate response.

Explanation:

The given values are:

Mass of iron,

m = 3 kg

Specific heat capacity,

\(c_A\) = 0.450

Temperature,

T = \(25-20\)

  = \(5^{\circ}C\)

Now,

⇒  \(Q=mc_A T\)

On substituting the values, we get

⇒      \(=3\times 0.450\times 5\)

⇒      \(=6.75\)

i.e,

⇒      \(=6750 \ J\)

Answer:

antimony

Explanation:

it has 51 protons, 4 more than silver and two less than xenon

Tidal energy - periodical difference in height of water

Geothermal energy - superheated water at rift zones

Wave energy - force of moving water

Wind energy - flat water surface without obstructions

Tidal energy can be harnessed due to the periodical difference in the height of water caused by the gravitational pull of the moon and sun. This cyclic rise and fall of tides creates a predictable and consistent source of energy that can be converted into electricity using tidal turbines.

Geothermal energy utilizes the superheated water present in rift zones. These are areas where the Earth's crust is thin, allowing molten rock to rise closer to the surface. The heat from the molten rock heats underground water, creating geothermal reservoirs that can be tapped to generate electricity or provide direct heating.

Wave energy takes advantage of the force of moving water in the ocean. Waves carry a significant amount of energy, and devices like wave energy converters can capture this energy and convert it into electricity. The continuous motion of waves provides a renewable and abundant source of power.

Wind energy, although not exclusive to the ocean, can benefit from the flat water surface without obstructions found in offshore locations. This allows for the installation of large-scale wind turbines that harness the strong and consistent winds over the ocean, generating electricity.

In conclusion, the ocean's characteristics, such as tidal patterns, superheated water in rift zones, force of moving water in waves, and unobstructed flat water surfaces, enable the generation of renewable energy sources like tidal, geothermal, wave, and offshore wind energy.

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A  polymer of monosaccharides linked by glycosidic bonds is known as a polysaccharide.

We know that there are different kinds of sugars that we have. This would depend on the way that the atoms of the sugar are joined together. The various kinds of sugars are found to be;

Monosaccharides: These are composed of simple sugar units

Disaccharides: These are composed of two sugar units that are joined together.

Polysaccharides : These are composed of more than two sugar units that are joined together.

Now we have to note that in talking about poly saccharides the idea that they are sugars that are composed of many units have to be at the back of our minds in the discussion. The many units have to be joined by a kind of bond that is called the  glycosidic bonds

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We need ti find how many elements there are in the first period and what are these.

To know what is the first period we must use that

Seeing the periodic table, the first row has two elements.

We can see that these elements are H ( hydrogen ) and He ( helium ).

ANSWER:

Firs period in the periodic table has two elements and they are called hydrogen and helium.

The balanced chemical equation for the reaction is 4Na + O₂ → 2Na₂O. This means that for every 4 moles of sodium (Na) and 1 mole of oxygen (O₂) that react, 2 moles of sodium oxide (Na₂O) are produced.

To determine the correct answer, we need to use stoichiometry to calculate the theoretical yield of Na₂O based on the amount of Na and O₂ present in each scenario. We can then compare the calculated yield to the given yield of 169 g and 527 g to see which starting material (Na or O₂) produces a lower yield.

A. To calculate the theoretical yield of Na₂O based on 5.43 moles of Na:

5.43 moles Na x (2 moles Na₂O / 4 moles Na) x (62 g Na₂O / 1 mole Na₂O) = 168.78 g Na₂O

The calculated yield of Na₂O based on 5.43 moles of Na is very close to the given yield of 169 g. Therefore, we can conclude that Na is not the correct answer.

B. To calculate the theoretical yield of Na₂O based on 4.25 moles of O₂:

4.25 moles O₂ x (2 moles Na₂O / 1 mole O₂) x (62 g Na₂O / 1 mole Na₂O) = 527.25 g Na₂O

The calculated yield of Na₂O based on 4.25 moles of O₂ is very close to the given yield of 527 g. Therefore, we can conclude that O₂ is not the correct answer.

C. Since Na is not the correct answer and O₂ is not the correct answer, the only option left is C. Therefore, the correct answer is O₂ because it has the lower starting mass.

Answer:

- Water from beaker will move to the tube

Explanation:

Total percentage of water in the beaker;

\( = { \tt{100\% - 5\%}} \\ = { \tt{95\%}}\)

Total percentage of water in dialysis tube;

\({ \tt{ = 100\% - 15\%}} \\ = { \tt{85\%}}\)

So, there is much water concentration in the beaker than the dialysis tubing, this causes a determined percentage of water to diffuse to the tubing, and determined percentage of salt to move from tubing to the beaker.

Percentage of water moving to tubing;

\({ \tt{ = 95\% - 85\%}} \\ = { \tt{10\%}}\)

Percentage of salt moving from tubing to beaker

\({ \tt{ = 15\% - 5\%}} \\ { \tt{ = 10\%}}\)

Answer:

The physical reaction is...

Applying the baking soda/ water to the provided surface is a physical change, once a heat element is brought in, the releasing of heat is a chemical change; the baking soda changing color is in fact a chemical change because you are scorching it, it cant be undone.  

Explanation:

The mass corresponding to a mole of one element different from the mass corresponding to a mole of another element because the mass of an atom of each element is different.

Because the mass of one atom in each element varies, the mass corresponding to a mole of one element differs from the mass corresponding to a mole of another. Since a mole is a predetermined number of atoms, the mass of a mole of atoms will be heavier the heavier each atom is.

A mole is a measurement of substance. According to Avogadro's number, it is defined as the volume of material containing 6.0221421 x\(10^{23}\) particles. The number of atoms in precisely 12 grammes mass of pure carbon-12 is the definition of a mole in terms of numbers.

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Answer:

The mass of 1 atom of silver is 1.79 x 10-22g.

Answer:

122.904 21(1)

Explanation:

Answer:

D. Chemical and physical properties

Answer:

0.00505

Explanation:

You can google the answer or try to learn how to convert it

a.) If M is a 2 × 2 matrix with det M = −2, and we want to find det((3M)-1) and det(3M-1),

then the formula to use is:

$$\det(cM) = c^n\det(M)$$ where $n$ is the order of matrix $M$.

1. Find det((3M)-1):

$$\begin{aligned}\det((3M)^{-1})&=\dfrac{1}{\det(3M)}\\\\&=\dfrac{1}{3^2\det(M)}\\\\&=\dfrac{1}{9(-2)}\\\\&=-\dfrac{1}{18}\end{aligned}$$

Therefore, det((3M)-1) = -1/18.

2. Find det(3M-1):

$$\begin{aligned}\det(3M-1)&=3^2\det(M-1/3)\\\\&=9\det(M-1/3)\\\\&=9\left|\begin{matrix}a-1/3 & b \\ c & d-1/3\end{matrix}\right|\\\\&=9\left(ad-\dfrac{a}{3}-\dfrac{d}{3}+\dfrac{1}{9}\right)\\\\&=3(3ad-a-d+1/3)\\\\&=9\det(M)-3\det(I)\\\\&=9(-2)-3(1)\\\\&=-21\end{aligned}$$

Therefore, det(3M-1) = -21.

b.) If A is a 5 × 5 matrix and det((2A)-1) = 1/8, then:

$$\begin{aligned}\det(2A)^{-1}&=\dfrac{1}{\det(2A)}\\\\\Rightarrow\dfrac{1}{8}&=\dfrac{1}{2^5\det(A)}\\\\\Rightarrow \det(A)&=2^5(8)\\\\&=256\end{aligned}$$

Therefore, det A = 256.

c.) If A and B are 3 × 3 matrices such that $\det(A) = 150$ and $\det(B) = 3$, then:

1. det(2A) = $2^3\det(A)$ = $2^3\times150$ = 1200
2. det(A + B) $\neq\det(A) + \det(B)$ (property does not hold true for addition)
3. det(AB) = $\det(A)\det(B)$ = $150\times3$ = 450

Therefore, det(2A) = 1200, det(A + B) $\neq$ det(A) + det(B), and det(AB) = 450.

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Answer:

-177.9 kJ.

Explanation:

Use Hess's law. Ca(s) + CO2(g) + 1/2O2(g) → CaCO3(s) ΔH = -812.8 kJ 2Ca(s) + O2(g) → 2CaO(s) ΔH = -1269.8 kJ We need to get rid of the Ca and O2 in the equations, so we need to change the equations so that they're on both sides so they "cancel" out, similar to a system of equations. I changed the second equation. Ca(s) + CO2(g) + 1/2O2(g) → CaCO3(s) ΔH = -812.8 kJ 2CaO(s) → 2Ca(s) + O2(g) ΔH = +1269.8 kJ The sign changes in the second equation above since the reaction changed direction. Next, we need to multiply the first equation by two in order to get the coefficients of the Ca and O2 to match those in the second equation. We also multiply the enthalpy of the first equation by 2. 2Ca(s) + 2CO2(g) + O2(g) → 2CaCO3(s) ΔH = -1625.6 kJ 2CaO(s) → 2Ca(s) + O2(g) ΔH = +1269.8 kJ Now we add the two equations. The O2 and 2Ca "cancel" since they're on opposite sides of the arrow. Think of it more mathematically. We add the two enthalpies and get 2CaO(s) + 2CO2(g) → 2CaCO3(s) and ΔH = -355.8 kJ. Finally divide by two to get the given equation: CaO(s) + CO2(g) → CaCO3(s) and ΔH = -177.9 kJ.