Which compound has only ionic bonds? a)CO2. b)Al2O3. c)H2O2.

Answer:

answer: B or D

Explanation:

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Answer:

The volume of the gas is approximately 4.41 liters

Explanation:

The details of the data of the Neon gas are;

The number of moles of Neon gas present, n = 11.6 moles

The temperature of the sample of Neon gas, T = 120 K

The pressure of the sample of the Neon gas, P = 25.6 atm

By the ideal gas equation, we have;

P·V = n·R·T

Where;

R = The universal gal constant = 0.08205 L·atm·mol⁻¹·K⁻¹

Therefore, we get;

V = n·R·T/P

Which gives;

V = 11.6 moles × 0.08205 L·atm·mol⁻¹·K⁻¹ × 120 K/(25.9 atm) ≈ 4.4097915 L

The volume of the gas, V ≈ 4.41 L.

When the atom, or system, emits or absorbs energy, a transition between two energy levels is said to take place. A system's ground state is the lowest energy level, and excited states have higher energy levels.

Only specific discrete values of energy, known as energy levels, can be absorbed by a bound or spatially constrained quantum mechanical system or particle. Unlike classical particles, which can have any amount of energy as well as excited and ground states, Electrons may be found at specific intervals from an atom's nucleus known as energy levels, also referred to as electron shells. In essence, this means that nuclear power facilities operate at full capacity for more than 92% of the year. This is approximately roughly two times more than natural gas and coal units, and approximately three times as reliable as wind and solar facilities.

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The balanced chemical equations are as  follows:

14. C₂H₄ + 3 O₂ -> 2CO₂ + 2H₂O

15. 2NaHCO₃ -> Na₂CO₃ + H₂O + CO₂

16. 3Cl₂ + 2NaBr -> 2NaCl + Br₂

17. 3Na₂S + 2NaCl + 3H₂O -> 5NaCl + H₂S + 3O₂

Balanced equations are equations of chemical reactions that ensure that the law of conservation of mass is true.

In a balanced equation, the number of atoms of each element on both sides of the equation is equal.

The given chemical equations are balanced as follows;

14.  Place 3, 2, and 2 before O₂, CO₂, and H₂O respectively.

C₂H₄ + 3 O₂ -> 2 CO₂ + 2 H₂O

15. Place 2 in front of NaHCO₃.

2 NaHCO₃ -> Na₂CO₃ + H₂O + CO₂

16. Place 3, 2, and 2 in front of Cl₂, NaBr, and NaCl respectively.

3Cl₂ + 2NaBr -> 2NaCl + Br₂

17. Place 3, 2, 3, 5, and 3 in front of Na₂S, NaCl, H₂O, NaCl, and O₂ respectively.

3Na₂S + 2NaCl + 3H₂O -> 5NaCl + H₂S + 3O₂

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Amino acids can be either polar or= non-polar based on their R groups. In general, amino acids are non-polar if R groups are hydrophobic peptide bonds referred to as Fent: Such amino acid side chains include nonpolar hydrocarbons. R groups amide groups Other amino acids are polar and are generally referred to as hydrophilic.

Amino acids are the building blocks of proteins. They are made up of a central carbon atom connected to an amino group (\(NH_2\)), a carboxyl group (COOH), a hydrogen atom, and a side chain (R-group), which is unique to each amino acid.

There are 20 different amino acids found in proteins. The side chains (R-groups) can be either polar or nonpolar, which determines the amino acid's polarity. The polarity of an amino acid's side chain affects its properties in a protein molecule.

Amino acids can be either polar or nonpolar based on their R groups. In general, amino acids are nonpolar if their R groups are hydrophobic, meaning they do not interact well with water. Such amino acid side chains include nonpolar hydrocarbons, such as those found in glycine, alanine, and valine.

Other amino acids are polar and are generally referred to as hydrophilic, meaning they interact well with water. Polar side chains include carboxylic acids, such as those found in aspartic acid and glutamic acid, as well as amino alcohols, such as those found in serine and threonine.

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Answer:

the answer is option B it is a proton acceptor

The bond holding the two hydrogen atoms together in a hydrogen molecule (H2) is a covalent bond.

Specifically, it is a type of covalent bond called a "single covalent bond" because each hydrogen atom shares one electron with the other, forming a stable H2 molecule.

1. Molecular Formula: The molecular formula of hydrogen gas is H2, indicating that it consists of two hydrogen atoms bonded together.

2. Diatomic Nature: Hydrogen is a diatomic molecule, meaning it naturally occurs as a pair of atoms chemically bonded together. In its pure elemental form, hydrogen exists predominantly as H2.

3. Bonding: The bond between the two hydrogen atoms in H2 is a covalent bond. Covalent bonds involve the sharing of electrons between atoms, allowing them to achieve a more stable electron configuration. In the case of hydrogen, the two atoms share a pair of electrons, resulting in the formation of a single covalent bond.

4. Stability: The formation of H2 molecules through covalent bonding provides stability to hydrogen atoms. By sharing electrons, the two hydrogen atoms achieve a filled outer electron shell, resembling the stable electron configuration of helium. This shared electron pair holds the atoms together in a stable H2 molecule.

5. Physical Properties: Hydrogen gas is a colorless, odorless, and highly flammable gas. It is the lightest and simplest element, with a low boiling point and melting point. Hydrogen has a low density, and at standard temperature and pressure, it exists as a diatomic gas (H2).

6. Abundance: Hydrogen is the most abundant element in the universe. However, on Earth, it is typically found in compounds such as water (H2O) or hydrocarbons, rather than in its pure diatomic form.

7. Various Applications: Hydrogen gas has several important applications, including its use as a fuel in fuel cells and hydrogen-powered vehicles. It is also used in various industrial processes, such as ammonia production and hydrogenation reactions in the chemical industry. Hydrogen gas is even utilized in the production of certain metals and as a reducing agent in various chemical reactions.

These are some key points regarding hydrogen as a diatomic molecule. If you have any more specific questions or need further information, feel free to ask!

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Answer:

The pH scale ranges from 0-14.

Explanation:

Zero is the most acidic measurement while six would be the least acidic of the acids, seven is a pure substance, neither acidic nor basic, eight is the least basic measurement while 14 is the most basic of the bases.

Answer:

Grignard reagents are formed by the reaction of magnesium metal with alkyl or alkenyl halides. They're extremely good nucleophiles, reacting with electrophiles such as carbonyl compounds

Explanation:

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Answer:

Ground state electronic configuration of nitrogen atom can be represented by 1, 4 only. All the unpaired electrons have spins aligned in the same direction only.

Explanation:

Answer:

70°C,130.9 ................,...

Answer:

162.7miles/hr

Explanation:

Given parameters:

Distance covered by the train  = 813.5miles

Time taken  = 5hours

Unknown:

Speed of the train  = ?

Solution:

Speed is a physical quantity.

It is mathematically expressed as;

      Speed  = \(\frac{distance}{time}\)

So, input parameters and solve;

   Speed  = \(\frac{813.5}{5}\)  = 162.7miles/hr

Answer:

pls help

Explanation:

Rb, Ga, Al, C, O, F is the order of decreasing metallic character.

The metallic properties of an element are defined as the susceptibility of its atoms to lose electrons. According to the modern periodic table, the metallic properties of elements decrease as they move from left to right over a period of time. Moving cyclically increases the nuclear attraction due to the increase in atomic number and decreases the atomic size. Therefore, elements cannot readily donate electrons. Therefore, metallicity decreases over a period moving from left to right.

Moving down the group increases the metal letters on the periodic table. As the distance between the valence electrons and the nucleus increases, the attractive force between them also decreases. If you increase the atomic radius, you lose electrons very easily.

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The Federal air quality standards for sulfur oxides (SOx) in parts per million (ppm) is 0.075 ppm for the primary standard (which is focused on public health). However, among the options provided, the closest answer would be:b. 0.03

Keep in mind that standards may vary depending on the specific sulfur oxide being measured and the jurisdiction.This standard applies to both sulfur dioxide (SO2) and sulfur trioxide (SO3). The standard was set by the Environmental Protection Agency (EPA) in 1971 and has been updated several times since then. The current standard is aimed at protecting the public from the adverse health effects of Sox emissions, such as respiratory illnesses and lung damage.

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The bond order for a second-period diatomic particle containing five electrons in antibonding molecular orbitals and eight electrons in bonding molecular orbitals is 1.5

Bond order is defined as the number of electrons in bonding molecular orbitals minus the number of electrons in antibonding molecular orbitals divided by two. As a result, we may determine the bond order of this diatomic particle by the formula: Bond order = (number of bonding electrons - number of antibonding electrons) / 2

Bond order = (8 - 5) / 2

Bond order = 1.5.

This diatomic molecule, according to the bond order, is a stable molecule since the bond order is greater than 1, indicating that it is a double bond. The molecule has an overall bond strength that is greater than a single bond, but not as strong as a triple bond. So therefore he bond order for a second-period diatomic particle containing five electrons in antibonding molecular orbitals and eight electrons in bonding molecular orbitals is 1.5

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Answer:

there is nothing there?

Explanation:

Four examples of amorphous solids are: Glass, Rubber, Asphalt, and Amorphous metals.

Amorphous solids are solids that lack a long-range ordered structure and have a disordered arrangement of atoms or molecules.

Glass: Glass is a non-crystalline solid that is made by cooling a melt or solution so rapidly that the atoms or molecules do not have time to arrange themselves into a crystalline structure.

Rubber: Natural rubber and synthetic rubber are both examples of amorphous solids. Rubber is made up of long polymer chains that are tangled and disordered, giving it its characteristic elasticity and flexibility.

Asphalt: Asphalt is a mixture of bitumen and mineral aggregates that is used as a paving material for roads, parking lots, and other surfaces. Asphalt is an amorphous solid because the bitumen molecules have a disordered arrangement.

Amorphous metals: Amorphous metals, also known as metallic glasses, are a class of metals that have a disordered atomic structure. Amorphous metals are made by cooling a liquid metal at a rate of millions of degrees per second, which prevents the atoms from arranging themselves into a crystalline structure.

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The given statement “Shorter product life cycles have led to increased demand uncertainty and difficulty in forecasting” is true because shorter product life cycles have led to increased demand uncertainty and difficulty in forecasting. It is becoming more difficult to predict demand, and there is a higher probability of product failure than there was in the past.

There are several factors responsible for this increased demand uncertainty and difficulty in forecasting. One of the most significant factors is the decrease in product life cycle length. Shorter product life cycles imply that new items and designs are being introduced on a more frequent basis.Product life cycles are the stages that a product passes through from conception to eventual obsolescence. It starts with the development of the product and continues until the product is no longer in use. It includes the introduction stage, growth stage, maturity stage, and decline stage.A product's life cycle has an impact on supply chain management since it has a significant impact on demand forecasting. As a result, any adjustments in demand forecasts must be accompanied by adjustments in supply chains. In a nutshell, shorter product life cycles have resulted in increased demand uncertainty and difficulty in forecasting, making it more challenging to manage supply chains effectively.

So, shorter product life cycles have led to increased demand uncertainty and difficulty in forecasting is true.

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The correct name for the compound N₂O₄ is dinitrogen tetroxide. The formula N₂O₄ represents the molecule dinitrogen tetroxide.

Hence, option D (dinitrogen tetroxide) is the correct answer.

The formula for nitrogen monoxide is NO, nitrogen dioxide is NO₂, and nitrogen trioxide is N₂O₃. The term "tetranitrogen dioxide" (Option B) is incorrect as it contains the prefix "tetra-," which refers to four. There are only two nitrogen atoms present in the molecule.

The term "dinitrogen quadoxide" (Option C) is also incorrect because it does not exist. The term quadoxide does not apply to any known compound.

Hence, the correct name of the compound N₂O₄ is dinitrogen tetroxide (Option D).

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To balance the skeleton reaction under basic conditions:

NO2-(aq) + Al(s) ---> NH4+(aq) + AlO2-(aq)

We can follow these steps:

1. Balance the aluminum (Al) atoms:

NO2-(aq) + 2Al(s) ---> NH4+(aq) + AlO2-(aq)

2. Balance the nitrogen (N) atoms:

NO2-(aq) + 2Al(s) ---> NH4+(aq) + AlO2-(aq) + NO3-(aq)

3. Balance the oxygen (O) atoms:

NO2-(aq) + 2Al(s) ---> NH4+(aq) + AlO2-(aq) + NO3-(aq) + H2O(l)

Now, let's count the stoichiometric coefficients on the products side:

1 + 1 + 1 + 1 + 1 = 5 Therefore, the sum total of the stoichiometric coefficients on the products side is 5.

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Answer:

a) the balloons will shrink

b) temperature

c) volume of gas in the balloons

d) pressure and amount of the gas

e) The balloons can be set up and left at constant temperature. Possibly at room temperature to see if the same effect will be observed in it's volume.

Explanation:

Charles law states that, the volume of a given mass of gas is directly proportional to it's temperature at constant pressure.

Hence, if we manipulate the temperature of a gas (e.g by immersing it into cold nitrogen) it's volume changes in response to temperature change at constant pressure.

A balloon at constant room temperature will not experience any decrease in volume as the balloon in our experiment does.

A) The number of H₂O molecules in 0.23 moles is equal to 1.5 × 10²³.

B) The single displacement reaction is,

Ca + 2HCl →  CaCl₂ + H₂

C)  The double displacement reaction is,

Na₂SO₄ + 2NH₄Cl → 2NaCl  + (NH₄)₂SO₄

A displacement reaction is one in which a set of atoms in a molecule are replaced by another set of atoms.

When an element leaves its compound or when one element is replaced by another from its own compound, a single displacement reaction can be demonstrated as a type of redox reaction.

In aqueous solutions, double displacement reactions take place where ions precipitate and exchange ions.

Hydrogen gas and calcium chloride are produced in a single displacement reaction between calcium and HCl acid.

Ca + 2HCl →  CaCl₂ + H₂

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Answer:5

Explanation:

Answer:

physical change

Explanation:

The volume (in liters) of ethane gas at STP burned when 5259 KJ of heat is produced is 6.7 L

We shall begin our calculation by obtaining useful information from the balanced equation as shown below:

2C₂H₆(g) + 7O₂(g) -> 4CO₂(g) + 6H₂O(g) ΔH = -1559 KJ

From the balanced equation above,

1559 KJ of heat energy were obtained from 2 L of ethane, C₂H₆

With the above information, we shall determine the volume (in liters) of ethane, C₂H₆, needed to produce 5259 KJ of heat energy. Details below:

From the balanced equation above,

1559 KJ of heat energy were obtained from 2 L of ethane, C₂H₆

Therefore

5259 KJ of heat energy will be obtain from = (5259 × 2) / 1559 = 6.7 L of ethane, C₂H₆

Thus, the volume of ethane, C₂H₆ needed is 6.7 L

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Answer:

Wind depositing sand to build up sand dunes.

Explanation:

Answer:

Divide its mass by the volume.

Explanation:

Answer:

C3H6O3

Explanation:

Hydroxyacetone