o−cl , s−br, c−p rank bonds from highest polarity to the lowest. to rank bonds as equivalent, overlap them.

Answer:

Choice D. Among the choices, \(\rm Kr\) (krypton) is likely to be the most similar to neon and behave as a non-reactive gas.

Explanation:

Columns in the periodic table are called "groups." Elements in the same group (i.e., same column of the periodic table) tend to have similar chemical properties.

In this example, neon is in the same right-most column of the periodic table. Since neon is a non-reactive gas, it is reasonable to infer that other elements in the same column would behave similarly.

Among the choices, krypton (\({\rm Kr}\)) is the only element in the same column. Thus, krypton would be the most likely element to be a nonreactive gas.

Option [D] Krypton, Kr number 36

Answer:

Explanation:

a) Zinc has a charge of plus 2 and hydrogen gas is H₂ so HCl would have a two in front to balance the equation

b) All have charges of plus one

c) Copper has a charge of plus two (given) and it needs two chlorine atoms to become stable and hence to balance the whole equation, you would need two moles of sodium hydroxide and sodium chloride

HOPE THIS IS THE ANSWER FOR YOUR QUESTION

Positive ions must shrink and have a stronger positive charge in order to increase the covalent nature of an ionic connection. Smaller ions can approach negatively charged ions, increasing their attraction and increasing the likelihood that electrons will be transferred.

The attraction between the two ions is increased by a stronger positive charge on the ion, increasing the likelihood that electrons will be transferred.

Negative ions must expand and have a stronger negative charge in order to increase the covalent nature of an ionic connection. The electrical attraction between the two ions is lessened as a result of larger ions putting more space between themselves and the positive ions.

It is more difficult for the electrons to be entirely transferred from one ion to the other when the ion has a higher negative charge, which leads to some degree of electron sharing between the two ions.

Positively charged ions and negatively charged ions can form ionic bonds, which are defined by the transfer of electrons from one ion to another.

These ionic bonds, however, can have a covalent nature, which means that the two ions share some electrons to some extent.

The sizes and charges of the ions involved have an impact on the covalent nature of an ionic bond.

A smaller size and a larger positive charge will increase the covalent nature of the binding when positive ions are present.

This is due to the fact that smaller ions are more attracted to one another since they can be brought closer to one another.

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GINA shields people from prejudice based on their genetic information in both employment and health insurance.

The protections provided by GINA include a few notable restrictions. The protections provided by GINA with regard to insurance are only applicable to health insurance; it does not apply to life, disability, or long-term care insurance.

Totenberg examined the GINA's clear wording in an attempt to settle the argument. According to her, the "unambiguous language of GINA includes Atlas's request for Lowe and Reynolds' genetic information and hence demands judgment in their favor."

Therefore, a person's genetic information cannot be used by a group or individual health insurance to establish eligibility or set premiums.

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Answer:  Average atomic mass of an element is the summation of the masses of its isotopes, each multiplied by its natural abundance.

Average atomic mass = A₁M₁ + A₂M₂ +… + AnMn

Average atomic mass of element X is 13.9790 amu.

Explanation:

Average atomic mass = A₁M₁ + A₂M₂ +… + AnMn)

where, A is % abundance and M is atomic mass of element

To find : average atomic mass of element X

Let's take abundance of each isotopes as;

Abundance of X-14 = 99.636% = 0.99636

Abundance of X-15 = 0.364% = 0.00364

As per given data, atomic mass of the element X-14 is 14.003 and

X-15 15.000 amu.

As per given formula: we get,

Avg. atomic mass = (14.003)*(0.99636) + (15.000)*(0.00364)

Calculating this expression gives us:

So, Avg. atomic mass = 13.92445 + 0.0546 = 13.97905 amu

1. Hours

2. 2 hours

3. 1 hour and 50 minutes

4. Hours

5. 300 minutes

6. 7 hours

7. 240 minutes is the same as 4 hours

Molar mass:-

\(\\ \sf\longmapsto LiCN\)

\(\\ \sf\longmapsto 7u+12u+14u\)

\(\\ \sf\longmapsto 21u+12u\)

\(\\ \sf\longmapsto 33u\)

\(\\ \sf\longmapsto 33g/mol\)

No of moles=Given Mass/Molar mass

\(\\ \sf\longmapsto \dfrac{83}{33}\)

\(\\ \sf\longmapsto 2.5mol\)

Answer:

ur really pretty :)

Explanation:

There are 11.6 mmol of iron in 650 mg of iron.

Given the mass of iron as 650 mg. The molar mass of iron is 55.85 g/mol.

We need to calculate how many millimoles (mmol) are present in the given amount of iron.

We will use the following conversion:

1 g = 1000 mg

1 mol = molar mass in grams

1 mmol = 0.001 mol

Number of moles of iron

= 650 mg ÷ 1000 mg/g

= 0.65 g ÷ 55.85 g/mol

= 0.0116 mol

Number of millimoles of iron

= 0.0116 mol ÷ 0.001 mol/mmolar mass of iron

= 11.6 mmol

Hence, there are 11.6 mmol of iron in 650 mg of iron. Therefore, the correct option is A. 11.6 mmol Fe.

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25 x 6.022 x \(10^{23}\)formula units are present in 25.0 mol of sodium chloride.

A mole is defined as 6.02214076 × \(10^{23}\)

of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

One mole of NaCl contains 6.022 x \(10^{23}\) NaCl formula units.

25.0 mol of sodium chloride contains 25 x 6.022 x \(10^{23}\).

Hence, 25 x 6.022 x \(10^{23}\)formula units are present in 25.0 mol of sodium chloride.

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The number of formula units are present in 25.0 mol of sodium chloride is 25 x 6.022 x 10 ²³ formula units of sodium chloride.

A formula unit in chemistry is the empirical formula of any ionic or covalent network solid compound used as an independent entity for stoichiometric calculations.

It is the lowest whole number ratio of ions represented in an ionic compound.

Hence, The number of formula units are present in 25.0 mol of sodium chloride is 25 x 6.022 x 10 ²³ formula units of sodium chloride.

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If 2.35 grams of magnesium oxide are formed, 1.42 grams of Mg reacted in the reaction.

Magnesium oxide is a chemical compound composed of magnesium and oxygen, with the chemical formula MgO.

2 Mg(s) + O₂(g) -> 2 MgO(s)

From the equation, we can see that 2 moles of magnesium react with 1 mole of oxygen to produce 2 moles of magnesium oxide. This means that the mole ratio of magnesium to magnesium oxide is 2:2, or simply 1:1.

2.35 g MgO x (1 mol MgO/40.31 g MgO) = 0.0583 mol MgO

Since the mole ratio of Mg to MgO is 1:1, we know that 0.0583 moles of Mg also reacted. Now we can use the molar mass of Mg to calculate the mass of Mg that reacted:

0.0583 mol Mg x 24.31 g/mol = 1.42 g Mg

Therefore, 1.42 grams of Mg reacted in the reaction.

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At equilibrium, the composition of the reaction vessel with 0.51 moles of CO₂ and 0.51 moles of H₂ is given by the equilibrium constant K, which is 819.

The reaction given is:

H₂(g) + CO₂(g) ⇌ CO(g) + H₂O(g)

So, we know the formula for Kp and Kc in terms of partial pressure and concentration are as follows:

Kc = (CO(g) × H₂O (g)) / (CO₂(g) × H₂(g))

Kp = (PCO × PH₂O) / (PCO₂ × PH₂)

At equilibrium, the equilibrium constant expression can be written as:

Kc = [CO][H₂O] / [H₂][CO₂] = x²/ [(0.51-x)(0.51-x)]

Substituting the given value of Kc into the above equation and solving for x gives:

819 = x²/[(0.51-x)(0.51-x)]

x = 0.302

From the results, we can say that "There will be very little CO₂ and H₂" at equilibrium.

The equilibrium constant for the given reaction is 819.

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Answer and Explanation:

This means that at 80 degrees C, the saturated solution of KCl will contain 50 grams of KCl for every 100 grams of water.

when the temperature of an isolated system decreases while the surroundings of a non-isolated system gains heat.

Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit. Stability is the reason that causes atoms  to bond together to form molecules.

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. In the nucleus, proton and neutron are present.

Every atoms want to gain stability. To gain stability atoms have to gain noble gas configuration that is outermost shell must contain 2,8, 18 electrons. The atom should follow octet rule. Stability lowers the energy of an atom.

Therefore stability is the reason that causes atoms  to bond together to form molecules.

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Answer:

10.208 kPa

Explanation:

The weight of the truck is 15,000 kg, which can be converted to Newtons using the conversion factor 1 kg = 9.8 N:

Weight of the truck = 15,000 kg × 9.8 N/kg = 147,000 N

The area of all tires touching the ground is 0.8 m².

The pressure exerted by one tire on the ground can be calculated using the formula:

pressure = force / area

where force is the weight of the truck divided by the number of tires (18), and area is the combined area of all tires touching the ground (0.8 m²).

So, the pressure exerted by one tire can be calculated as follows:

force per tire = weight of the truck / number of tires

force per tire = 147,000 N / 18 = 8,166.67 N

pressure = force per tire / area

pressure = 8,166.67 N / 0.8 m² = 10,208.33 Pa

Finally, we can convert this pressure to kilopascals (kPa) by dividing by 1000:

pressure = 10,208.33 Pa / 1000 = 10.208 kPa

Therefore, one tire of the 18 wheel truck exerts a pressure of 10.208 kPa on the ground.

Answer:

H2 is molecular hydrogen.it is a molecule of hydrogen that consists of two hydrogen atoms bonded together by one single bond. 2H denotes two moles of elemental hydrogen.it should be noted that elemental hydrogen is not bonded to anything.

Explanation:

H2 (2 being lower to H ) represents a single molecule of hydrogen .It is in the stable state and do not react .

2H represents two atoms of hydrogen .It is in the unstable state and do react immediately ( with oxygen as in water to be stable ) .

Answer:

Go to the bottom-right corner of your taskbar, then click the Volume Control icon. A small window will pop up, and it will offer access to the volume level control. Slide the bar to set the volume to your preferred level. This may be one of the quickest and easiest ways to change the volume level of your computer.

The electrons can jump shells by releasing/gaining energy. If an atom develops a positive charge, how could it have happened? It couldn't possibly have taken on additional protons because protons and neutrons are bound by the strong nuclear force, which keeps the nucleus stable.

Inverse volume refers to the reciprocal of the average volume of a gas sample at different pressures and temperatures.

This value is important in determining the relationship between pressure and volume in Boyle's law. You need to first determine the average volume of the gas sample at different pressures and temperatures. This can be done by measuring the volume of the gas at different pressures and temperatures and then calculating the average value. Once you have the average volume, you can then take the reciprocal of this value to get the inverse volume (1/Vavg).

In summary, to calculate the inverse volume (1/Vavg) in Boyle's law, you need to determine the average volume of the gas sample at different pressures and temperatures, and then take the reciprocal of this value. Make sure to use consistent units for pressure and volume when making your calculations.

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Answer:

C. Weathering breaks down rock and other material.

Explanation:

Answer:

Weathering breaks down rock and other material.

Explanation:

Have a nice day!!

QUOTE: " Out of the mountain of despair, a stone of HOPE. "- By: Martian Luther King JR.  

Answer

1.50 mol

Explanation

Given:

Initial volume, V₁ = 25.0 L

Mass of CH4 gas in 25.0 L container = 40 g

Final volume, V₂ = 15.0 L

From the Periodic Table; molar mass of CH4 = 16.04 g/mol

What to find:

The new amount in mole.

Step-by-step solution:

According to Avogadro’s law: For a confined gas, the volume (V) and number of moles (n) are directly proportional if the pressure and temperature both remain constant. That is:

n₁ = Mass/Molar mass = (40.0g/16.04 g/mol) = 2.493765586 mol

n₂ is the new amount in mole and can be calculated as follows:

The new amount in moles is 1.50 moles

Explanation:

1. All the energy is stored in newly made structure

2. Some energy is released into the environment as heat

3. Chemical energy is recycled

4. Atom cycle among living organism, producing energy

\(w = \text{Number of mols} \times \text{Molar mass}=4.8 \times 58.5=280.8~ g\)

We know,

Molar Mass of Sodium= 23 and,

Molar Mass of Chlorine= 35.45

\( \therefore \text{Molar Mass of Sodium chloride= 58.44 }\text{g/mol}\)

So, The Molar Mass in Grams=

\(58.44 \frac{\text{g}}{ \cancel\text {mol}} \times 4.80 \: \cancel\text{mol} \\ \\ \text{Mass of NaCl }= 280.51\: \text {gram}\)

Answer:

propane

Explanation:

propans is made up of 3 carbons and 8 hydrogens like the picture above

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

From the question

mass of block = 36 g

volume = 9 cm³

The density is

\(density = \frac{36}{9} \)

We have the final answer as

4.0 g/cm³

Hope this helps you

Answer:

d. The number of neutrons equals the number of electrons.

Explanation:

All atoms are electrically neutral as they contain the same number of protons (positive charges) and electrons (negative charges).