anyone answer please ?

The existence of polar covalent bonds allows molecules to interact via hydrogen bonding by creating regions of partial positive and partial negative charges within molecules. These partial charges can then attract other molecules through hydrogen bonding, resulting in various important properties such as high boiling points, surface tension, and the ability to dissolve many substances.

Polar covalent bonds are an important concept in understanding how molecules interact with each other. In a polar covalent bond, electrons are shared unequally between two atoms, resulting in partial positive and partial negative charges on the atoms. This unequal sharing of electrons creates regions of different electrical charges within the molecule.

Hydrogen bonding occurs when a hydrogen atom that is covalently bonded to a strongly electronegative atom (such as nitrogen, oxygen, or fluorine) is attracted to an electronegative atom in a different molecule.

In a polar covalent bond, the electronegative atom pulls the shared electrons closer to itself, creating a partial negative charge. This partial negative charge can then attract a hydrogen atom that is covalently bonded to an electronegative atom in a different molecule, creating a hydrogen bond.

For example, water molecules contain polar covalent bonds between the oxygen and hydrogen atoms, resulting in a partial negative charge on the oxygen atom and a partial positive charge on the hydrogen atoms. These partial charges allow water molecules to form hydrogen bonds with each other, as the partial positive hydrogen atoms are attracted to the partial negative oxygen atoms in neighboring water molecules.

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Answer:

yes the answer would be b

Answer: 72.58 km/hr

Explanation:

\(\frac{45 miles}{1 hour}\)×\(\frac{1 km}{0.62 miles}\) = 72.58 km/hr

Answer:

it is 72.9 km/h

Explanation:

just multiply 45 * 1.62 = ~72.9

Answer:

Water is one of the reactants

Approximately 6.63 grams of sulfide can be converted into zinc oxide using 2.64 L of oxygen gas measured at 21°C and 101 kPa.

The balanced equation is:2 ZnS(s) + 3 \(O_2\)(g) → 2 ZnO(s) + 2 S\(O_2\)(g)

The stoichiometric coefficient of ZnS is 2, while that of \(O_2\)is 3. So, the number of moles of \(O_2\)required to react with 1 mole of ZnS is given by (3/2) moles (i.e. 1.5 moles).

At STP (i.e. standard temperature and pressure), 1 mole of any gas occupies a volume of 22.4 L.

So, at 21°C and 101 kPa, the volume of 2.64 moles of oxygen gas is given by:

V = (n x R x T)/P= (2.64 x 8.31 x 294)/101= 62.7 L

Approximately 62.7 L of oxygen gas is needed to react completely with the sulfide and convert it into zinc oxide.

Therefore, to find the mass of sulfide that can be converted into zinc oxide using 2.64 L of oxygen gas measured at 21°C and 101 kPa, we first convert 2.64 L to moles of \(O_2\):

PV = nRTn = PV/RTn = (101 kPa)(2.64 L) / (8.31 L kPa/mol K)(294 K)= 0.102 moles of \(O_2\)

Since 3 moles of \(O_2\)re needed to react with 2 moles of ZnS, then the moles of ZnS required would be:

(2/3)(0.102 mol) = 0.068 mol ZnS.

To find the mass of ZnS, we use its molar mass:MM of ZnS = 97.47 g/molmass of ZnS

= (0.068 mol)(97.47 g/mol)mass of ZnS = 6.63 g

Hence, approximately 6.63 grams of sulfide can be converted into zinc oxide using 2.64 L of oxygen gas measured at 21°C and 101 kPa.

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Answer:

Explanation:

The question requires us to draw the Lewis structure for ClO3-.

In order to draw the Lewis structure of a molecule or ion, we need to consider the number of valence electrons in each atom of the structure:

O presents electron configuration: 1s2 2s2 2p4, thus it contains 6 valence electrons.

Cl presents electron configuration: 1s2 2s2 2p6 3s2 3p5, thus it contains 7 valence electrons.

Now, we can start drawing the Lewis structure for ClO3-.

1) First, we need to choose a central atom. Let's consider Cl as there is only one atom of it:

2) Next, we can "add" the electrons between the outer atoms and the central atom, representing bonds:

3) Now, let's complete the electrons on the atoms, starting with the outer atoms and then filling the central atom. Note that the total electrons is 3*6 + 1*7 = 25 electrons.

The moles of adipoyl chloride 3.4 mmol and the moles of hexamethylenediamine is 3.8 mmol.  The  reagent is the limiting reagent is  the adipoyl chloride .

The 5% v/v adipoyl chloride means that 5 mL of the adipoyl chloride in the 100 mL of solution

10mL of adipoyl chloride solution  = (5mL× 10mL)/100mL

                                                          = 0.5mL

The density = 1.26 g/mL

The mass of the adipoyl chloride = density × volume

                                                       = 1.26 × 0.5

                                                       = 0.63 g

The moles of adipoyl chloride = mass / molar mass

                                                  = 0.63 / 183

                                                  = 0.0034 mol = 3.4 mmol

The mass of the hexamethylenediamine = density × volume

                                                                    = 0.89 × 0.5

                                                                    = 0.445 g

The moles of the hexamethylenediamine = 0.445 / 116

                                                                      = 0.0038 mol = 3.8 mmol

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Answer:

Na2CO3

Explanation:

Na2CO3 is a compound soluble in water. So the correct option is A.

The common ionic solids' solubility laws are as follows. When two rules seem to conflict with one another, the prior rule is used.

Therefore, the correct option is A

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Answer:

The number of nitrogen molecules inside of berylluim nitrite are 5 cells.

Explanation:

Answer:

See Explanation

Explanation:

2Al⁰(s) + 3CuSO₄(aq) => Al₂(SO₄)₃(aq) + 3 Cu(s)

Did you know? ...

                1 mole = 1 N₀ = 6.023 x 10²³ particles = 1 formula weight

        Vol H₂(g) = 3 moles x 22.4 L/mole = 67.2 Liters H₂(g)

        Vol N₂(g) = 1 moles x 22.4 L/mole = 22.4 Liters N₂(g)  

        Vol NH₃(g) = 2 moles x 22.4 L/mole = 44.8 Liters NH₃(g)

         moles => coefficient values

         equation masses => coefficient x formula wt. (grams)

          particle numbers => coefficient x Avogadro's No. (=6.023 x 10²³)

          gas volumes => coefficient x 22.4 Liters

          molar energy values => Equation heat of rxn/coefficient

Yeah, I get carried away at times. Hope this will be useful. :-)

Answer: nitrogen

Explanation:

A central atom with less than an octet of electrons is C.\(BH_{3}\)

\(BH_{3}\), or boron trihydride, consists of a central boron atom covalently bonded to three hydrogen atoms. In its ground state, boron has an electron configuration of 1s²2s²2p¹, which means it has three valence electrons. When forming bonds with the three hydrogen atoms, boron shares one electron with each hydrogen, resulting in a total of six electrons around the central boron atom.

This configuration is known as an incomplete or deficient octet, as the central boron atom does not follow the octet rule, which states that atoms tend to form bonds to have eight electrons in their valence shell. In the case of \(BH_{3}\), the central boron atom has only six valence electrons. On the other hand, the central atoms in the other molecules (A. \(H_{2} O\), B. \(NH_{3}\), D. \(CH_{4}\), and E. \(SiH_{4}\)) all follow the octet rule, as they have eight electrons in their valence shells when bonded to their respective surrounding atoms.

In summary, the molecule with a central atom having less than an octet of electrons among the given options is C. \(BH_{3}\), with boron as the central atom possessing only six valence electrons.

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Answer:

Search engine. Example - Google. Hope this helps and please mark as the brainliest

Explanation:

The ATP (Available-to-Promise) for weeks 1 to 8 is the amount of inventory that a firm can commit to fulfilling customer orders within that time frame.

To calculate the ATP, you need to consider the MPS (Master Production Schedule) and the ATP calculations.

1. Start by looking at the MPS for weeks 1 to 8. The MPS represents the planned production quantities for each week.
2. Determine the beginning inventory for week 1. This is the inventory available at the start of week 1.
3. Add the MPS quantity for week 1 to the beginning inventory. This gives you the available inventory for week 1.
4. Subtract customer orders for week 1 from the available inventory. This gives you the remaining inventory after fulfilling customer orders for week 1.
5. Repeat steps 3 and 4 for each subsequent week, using the previous week's remaining inventory as the beginning inventory for the next week.
6. Continue this process until you reach week 8, calculating the available inventory and subtracting customer orders for each week.
7. The resulting values represent the ATP for weeks 1 to 8.

The ATP can fluctuate as new customer orders are received or changes are made to the MPS. Regular monitoring and adjustment of the ATP is necessary to ensure accurate order fulfillment.

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Answer:

0.008303 mol and 0.0997 g

Explanation:

From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.022×10²³ atoms.

This implies that 1 mole of carbon also contains 6.022×10²³ atoms.

Next, we shall determine the mole of carbon that contains 5.0×10²¹ atoms. This can be obtained as follow:

1 mole of carbon contains 6.022×10²³ atoms.

Therefore, Xmol of carbon will contain 5.0×10²¹ atoms i.e

Xmol of carbon = 5.0×10²¹ / 6.022×10²³

Xmol of carbon = 0.008303 mole

Therefore, 0.008303 mole of carbon contains 5.0×10²¹ atoms.

Finally, we shall determine the mass of carbon. This can be obtained as follow:

Mole of carbon = 0.008303 mole

Molar mass of carbon = 12.01 g/mol

Mass of Carbon =.?

Mole = mass /Molar mass

0.008303 = mass of carbon/12.01

Cross multiply

Mass of Carbon = 0.008303 x 12.01

Mass of Carbon = 0.0997 g.

Wavelength (L) is calculated using: L = gT²/2π, here g=9.8 m/s2 and T is wave period in seconds.

Wavelength of a wave describes how long the wave is and the distance from the "crest" (top) of one wave to the crest of next wave is called wavelength. We can also measure from the "trough" (bottom) of one wave to trough of next wave and get the same value for the wavelength.

We measure wavelength in following ways:

Use photometer to measure the energy of wave.

Convert energy into joules (J).

Divide energy by Planck's constant, 6.626 x 10⁻³⁴, to get the frequency of  wave.

Divide speed of light, ~300,000,000 m/s, by frequency to get wavelength.

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Assuming all orbitals are in the same energy level, the orbital with the lowest energy is the s orbital.

In the context of the electronic structure of atoms, orbitals are grouped into different energy levels, with each energy level containing one or more sublevels. The energy levels are labeled using the principal quantum number (n), with higher values of n corresponding to higher energy levels.

Within a given energy level, the s orbital is always the orbital with the lowest energy. This is because the s orbital has a spherical shape and is located at the center of the atom. It is shielded from the nuclear charge by the other electrons in the atom, resulting in a lower energy compared to other orbitals within the same energy level.

The p orbitals, on the other hand, have slightly higher energy than the s orbital within the same energy level. The p orbitals are dum bbell-shaped and are oriented along the x, y, and z axes. They have a higher energy due to their orientation and their closer proximity to the nucleus.

Similarly, the d and f orbitals, which exist in higher energy levels, have even higher energies compared to the s and p orbitals within their respective energy levels.

Therefore, if all the orbitals are in the same energy level, the s orbital will have the lowest energy among them.

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Answer: P2O5 is the empirical formula.

Explanation: When given percentages you can assume that many grams of each atom are in the compound. Then you divide grams by the molar mass of each element, giving you moles. Once you have moles, divide by the smaller molar amount, which should give you 1 mol of Phosphorus and 2.5 mol of Oxygen. Then multiply by 2 in order for both moles to be a whole number. This gets you 2 and 5.

Answer:

1. V2.

2. 299K.

3. 451K

4. 0.25 x 451 = V2 x 299

Explanation:

1. The data obtained from the question include:

Initial volume (V1) = 0.25mL

Initial temperature (T1) = 26°C

Final temperature (T2) = 178°C

Final volume (V2) =.?

2. Conversion from celsius to Kelvin temperature.

T(K) = T (°C) + 273

Initial temperature (T1) = 26°C

Initial temperature (T1) = 26°C + 273 = 299K

3. Conversion from celsius to Kelvin temperature.

T(K) = T (°C) + 273

Final temperature (T2) = 178°C

Final temperature (T1) = 178°C + 273 = 451K

4. Initial volume (V1) = 0.25mL

Initial temperature (T1) = 299K

Final temperature (T2) = 451K

Final volume (V2) =.?

V1 x T2 = V2 x T1

0.25 x 451 = V2 x 299

Answer:

The solution formed is acidic

pH = 0.87

Explanation:

The acid-base reaction of NaOH with HCl is:

NaOH + HCl → NaCl + H₂O

Where 1 mole of NaOH reacts with 1 mole of HCl

In the problem, moles of NaOH and HCl are:

NaOH: 0.0250L × (0.525mol / L) = 0.013125 moles NaOH

HCl: 0.0750 × (0.355mol / L) = 0.026625 moles HCl

As moles of HCl > moles NaOH, HCl is in excess and the solution formed is acidic

Moles in excess of HCl are:

0.026625 moles - 0.013125 moles = 0.0135 moles HCl

As the volume of the solutions is 25.0mL + 75.0mL = 100.0mL = 0.100L, molarity of HCl after reaction is:

0.0135 moles HCl / 0.100L = 0.135M HCl = 0.135M H⁺

As pH is defined as - log [H⁺], pH of the solution is:

pH = -log 0.135M H⁺ = 0.87

pH = 0.87

The pH of the resulting solution of the acid and base mixture is; Acidic with a PH = 0.87

We are given;

Volume of NaOH = 25 mL = 0.025 L

Volume of HCl = 75 mL = 0.075 L

Concentration of NaOH = 0.525 M

Concentration of HCl = 0.355 M

Total volume of solution = 0.025 + 0.075 = 0.1 L

Now, the the equation of the reaction is;

HCl + NaOH = NaCl + H2O

We can see that 1 mole of HCl reacts with 1 mole of NaOH.

Since; number of moles = Volume × concentration

Number of moles of HCl = 0.075 × 0.355

Number of moles of HCl = 0.026625 moles

Similarly;

Number of moles of NaOH = 0.025 × 0.525

Number of moles of NaOH = 0.013125 moles

We can see that the number of moles of HCl is greater than that of NaOH and as such there is excess HCl acid in the mix.

Thus,

Excess moles of HCl acid = 0.026625 - 0.013125

Excess moles of HCl acid = 0.0135 moles

Concentration of this excess HCl is gotten by the formula;

M = Excess moles/total volume

M = 0.0135/0.1

M = 0.135 M

PH of this excess concentration is;

PH = -log [H+]

PH = -log [0.135]

PH = 0.87

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Answer:

last option is the correct answer

Explanation:

you can see that the chemical NaCl is decomposed or broken into its components Na and Cl.

all other equations have formation of a new compound by reaction of 2 elements or compound

Atomic orbitals are the areas to the left and right of the dashed lines. The possible molecular orbitals that they can form are indicated by the dashed lines.

Normally, in diatomic molecular orbitals, the atomic orbitals with the closest energy level can overlap with each other and form molecular orbitals. Therefore, the atomic orbitals generally tend to overlap one by one from the lowest potential energy to the highest potential energy. For example, in a homonuclear diatomic molecule, which means that both atoms are the same element, the same orbitals will overlap together and form molecular orbitals.

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Answer:

\(\boxed {\boxed {\sf 81.4 \ g\ KOH}}\)

Explanation:

We are asked to convert 1.45 moles of potassium hydroxide (KOH)  to grams.

The molar mass is the mass in grams of 1 mole of a substance. The values are found on the Periodic Table. They are the same as the atomic masses but the units are grams per mole (g/mol) instead of atomic mass units (amu).

We have the compound KOH. Look up the molar masses of the individual elements.

The formula for the compound has no subscripts, so there is 1 mole of each element in 1 mole of the compound. We can simply add the molar masses.

Based on the molar mass, there are 56.105 grams of KOH in 1 mole. Create a ratio using this information.

\(\frac {56.105 \ g\ KOH}{ 1 \ mol \ KOH}\)

We are converting 1.45 moles of KOH to grams, so we multiply by this value.

\(1.45 \ mol \ KOH *\frac {56.105 \ g\ KOH}{ 1 \ mol \ KOH}\)

The units of moles of KOH cancel.

\(1.45\ *\frac {56.105 \ g\ KOH}{ 1 }\)

\(81.35225 \ g\ KOH\)

The original measurement of moles has 3 significant figures, so our answer must have the same.

For the number we calculated, that is the tenths place. The 5 in the hundredths place (81.35225) tells us to round the 3 up to a 4.

\(81.4 \ g\ KOH\)

Approximately 81.4 grams of potassium hydroxide are represented by 1.45 moles.

Answer:

your answer would be force

Explanation:

Answer:

Ansmure two

ismirgonewart

are you

and de band

what is true beauty and the best

Explanation:

itu diatas jawaban nya

An intrapreneur is an individual who exhibits entrepreneurial qualities and behaviors within an established organization.

They are often innovative, creative, and take initiative to develop and implement new ideas, products, or processes within the company.  In the context you provided, someone working in labs or organizations, such as Sperti Foamt, and collaborating with members of the Arab American community can be considered an intrapreneur if they are actively seeking opportunities to drive positive change, bring about innovation, and create value within their organization. The practise of acting like an entrepreneur while employed by a huge corporation is known as intrapreneurship. Intrapreneurship is defined as the use of a corporate management style that combines risk-taking and innovative approaches, as well as the rewards and motivating strategies that are more typically associated with entrepreneurship.

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