The conjugate acid of CH3COO- is _____________. The conjugate acid of F- is _______________. The conjugate acid of CN- is ______________. The conjugate acid of PO43- is _____________.The conjugate base of CH3COOH is _________________. The conjugate base of HCl is ______________. The conjugate base of H2SO4 is _________________. The conjugate base of H2S is _______________. The conjugate base of H3PO4 is _________________. The conjugate base of NH4+ is ___________________.Na2HPO4 is soluble and exists in two units of the cation Na+ and one unit of the anion __________________. The conjugate base of this anion is _____________________. Na3PO4 is soluble and exists in three units of the cation Na+ and one unit of the anion ___________________. The conjugate acid of this anion is __________________.

The hydrogen bonding of water is one of the main property of water which makes it responsible for all the other physical and chemical properties.

Water molecules are polar in nature and they form hydrogen bonds. Hence, they have a high boiling point , high specific heat and density. Water can exhibit the properties of an acid, as well as a base (amphoteric character). The water molecules are constantly moving and the hydrogen bonds continuously breaks and forms again. These hydrogen bonds are strong, which is the reason for the unique properties of water.

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Answer:Ag

Explanation:

Answer:

1.02 10 to the 23 power(or 100,000,000,000,000,000,000,000)

atoms of AL

Explanation:

ive had this question before

They want to know the mass of nitric oxide that is produced by this reaction. The balanced chemical equation for this reaction is:

4NH₃(g) + 5O₂(g) → 4NO(g) + 6H₂O(g)

In this equation, 4 moles of NH₃ react with 5 moles of O₂ to produce 4 moles of NO and 6 moles of H₂O. To find the mass of NO produced, we need to use the molar mass of NO. Molar mass of NO = 30.01 g/molTo find the mass of NO produced, we need to use stoichiometry.

We know that 4 moles of NH₃ reacts with 5 moles of O₂ to produce 4 moles of NO. Therefore, if we know the number of moles of O₂ that reacted, we can use stoichiometry to find the number of moles of NO produced.We can use the ideal gas law to find the number of moles of O₂ that reacted.

n = PV/RT  We can assume that the reaction took place at standard temperature and pressure (STP), which means:P = 1 atmV = 22.4 L (molar volume of an ideal gas at STP)T = 273.15 K (0 °C)R = 0.08206 L atm/(mol K)Using these values, we can find the number of moles of O₂ that reacted:n = PV/RT = (1 atm)(22.4 L)/(0.08206 L atm/(mol K) * 273.15 K) ≈ 1 mol

Therefore, 1 mole of O₂ reacted in the reaction. Using stoichiometry, we can find the number of moles of NO produced.4 moles NH₃ : 4 moles NO1 mole O₂ : 4/5 moles NO (from the balanced equation)1 mole O₂ was consumed, so the number of moles of NO produced is:1 mole O₂ * (4/5 moles NO/1 mole O₂) = 0.8 moles NO

Finally, we can find the mass of NO produced using the molar mass of NO:mass NO = number of moles * molar mass mass NO = 0.8 mol * 30.01 g/mol ≈ 24.0 g Therefore, approximately 24.0 grams of NO are produced by the reaction between ammonia and oxygen gas.

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Answer:

1.1 x \(10^{9}\) km/h

Explanation:

Here we need to do two conversions- one from centimetres to kilometres and one from seconds to hours.

To get from cm to km- we divide by 100 000 since there are 100 000 cm in a km.

To get from seconds to hours we divide by 3600 since there are 3600 seconds in an hour

\(\frac{3*10^{10}cm/100000 }{1second/3600} =1.1*10^{9} km/h\)

Answer:

10.56 moles of NO will be produced

Explanation:

The balanced reaction of ammonia, NH₃ with oxygen, O₂ is:

4NH₃ + 5O₂ → 4NO + 6H₂O

Where 5 moles of oxygen react with an excess of ammonia to produce 4 moles of nitrogen monoxude.

If 13.2 moles of O₂ react:

13.2 mol O₂ * (4 mol NO / 5 mol O₂) =

Answer:

190+2=192

Explanation:

192 add it 192 added

Answer: they are right

Explanation:

The process of spectroscopy determines a substance's physical or chemical identity with as near absolute certainty as existing analytical techniques will permit.

Spectroscopy is the study of the interaction of electromagnetic radiation with matter and is a crucial tool in chemical analysis. By studying the spectrum of a substance (the way it absorbs, emits, or reflects light), spectroscopy can provide information about the composition, structure, and properties of the substance, thereby allowing for its identification with high accuracy.

Spectroscopy is a broad and interdisciplinary field that encompasses many different techniques for studying the interaction of electromagnetic radiation with matter. It plays a crucial role in various areas of science, including physics, chemistry, biology, and materials science. Spectroscopy provides information about the composition, structure, and properties of substances by analyzing the way they interact with light.

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The molar mass of element M can be calculated based on the given mass of the compound \(M_{3}N_{2}\) formed from the reaction. In this case, the molar mass of element M is 12.01 g/mol.

To calculate the molar mass of element M, we need to use the law of conservation of mass. The mass of the compound M_{3}N_{2} (43.5 g) is equal to the sum of the masses of three atoms of M and two atoms of nitrogen. We can calculate the mass of M in the compound by subtracting the mass of nitrogen from the total mass.

The molar mass of nitrogen (N) is 14.01 g/mol. Therefore, the total mass of nitrogen in the compound is 14.01 g/mol × 2 = 28.02 g/mol.

Now, subtracting the mass of nitrogen from the total mass of the compound, we get the mass of M: 43.5 g - 28.02 g = 15.48 g.

Since the mass of 35.3 g of element M reacted to form 15.48 g of M in the compound, we can conclude that the molar mass of element M is 15.48 g/mol / 35.3 g/mol = 12.01 g/mol, which is the molar mass of carbon (C).

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They all eventually found balance and seemed to be moving at the same speed.

The correct option is A.

The immediate rate at the beginning of a reaction, or when t = 0, is known as the starting rate of the reaction. The beginning rate is equal to the slope of the concentration of the reactants versus time curve at time zero, which is negative. Top.

Reactions frequently get slower over time once reactants are exhausted. Even though they aren't reactants themselves, catalysts can speed up a process when they are introduced to it. An increase in reaction rate is caused by temperature increases of a chemical reaction.

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The complete question is -

You may have clearly been able to distinguish the difference in the time required for the initial reaction of HCl with zinc in the temperature study. However, after a very brief period, the three test tubes are reacting at the same rate. Explain this.

A) They all eventually found balance and seemed to be moving at the same speed.

B) The zinc is reacting with water, not HCl and all test tubes have water in them in similar amounts.

C) The reaction is exothermic; at some point the solutions all reach the same temperature, regardless of the temp of the water baths.

Answer:

Explanation:

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

\(density = \frac{mass}{volume} \\\)

From the question

mass = 18.015 g

volume = 15 cm³

We have

\(density = \frac{18.015}{15} \\ = 1.000833333...\)

We have the final answer as

Hope this helps you

Oxygen gas is colorless

A poor conductor of heat and electricity

It is denser than any air

Flammability: Does not burn

Occurs in many compounds : Carbon dioxide, water and iron ore

Answer:

the cycle of water and how it evaporates with energy from the sun and the droplets are stored in clouds which is condensation and when it rains or snows those are forms of precipitation

Explanation:

Answer:

it shows the continuous movement of water within the earth and atmosphere

Answer:

CaCl2 + H2O

Explanation:

All of the following are involved in eukaryotic transcription EXCEPT a rho factor. The correct answer is 2.

Eukaryotic transcription is the process by which genetic information in DNA is transcribed into RNA. This process is carried out by a large complex of proteins and enzymes, including general transcription factors, transcription activators, and a transcription initiation complex.

These proteins and enzymes work together to unwind the DNA double helix, recruit the RNA polymerase enzyme to the promoter region of the gene, and begin the process of synthesizing RNA. The rho factor is not typically involved in this process, as it is specific to prokaryotic cells and is involved in the termination of transcription.

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The correct answer to which combination(s) of aqueous chemical species must be present at equilibrium to produce a buffer solution are a weak acid and its conjugate base and a weak base and its conjugate acid.

A buffer solution is a solution that resists changes in pH when small amounts of an acid or base are added to it. In order to produce a buffer solution, there must be a combination of a weak acid and its conjugate base or a weak base and its conjugate acid present at equilibrium.

The combinations that must be present at equilibrium to produce a buffer solution are:

- A weak acid and its conjugate base (for example, CH₃COOH and CH₃COO⁻)
- A weak base and its conjugate acid (for example, NH₃ and NH₄⁺)

Therefore, the correct answer is: A weak acid and its conjugate base and A weak base and its conjugate acid.

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The kinds of the solids are;

SiO2 - Covalent network solid

C6H12O6 - Covalent solid

KI - Ionic solid

A covalent network solid, often referred to as a network covalent solid or just a network solid, is a category of solid material in which the atoms that make up the material are strongly covalently linked to one another, forming an extended three-dimensional network structure.

Covalent network solids are kept together by a dense network of covalent bonds, as opposed to molecular or ionic solids, which are held together by weaker intermolecular forces or ionic interactions, respectively.

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Answer: B- Isotopes are often used for dating artifacts and fossils is incorrect.

Explanation: I hope that helped

Answer: C

Explanation: Edge

Answer:

ans is that

Explanation:

2hgo+cl2->2hgcl+o2

A set of particles (atoms or molecules) that are constantly moving at random makes up a gas sample, according to the kinetic energy of a  molecular theory.

Moreover, these gas particles' average kinetic energy solely depends on the temperature of the gas. With an increase in gas temperature, the average kinetic energy rises (this tells that the fifth statement is true). Despite the fact that certain gas molecules will always be travelling more quickly than others, the gas can still be represented by its average kinetic energy. Because kinetic energy is proportional to the square of the speed, the second claim—that the average speed of gas molecules rises with rising temperature—is derived from this.

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Answer:

"Anion" is correct option

Explanation:

An anion is an ion that has gained one or more electrons, acquiring a negative charge.

Answer:

Answer: Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same.

Explanation: Physical change is a change in which there is no change in the chemical arrangement and thus there is no redistribution of atoms. No new substances are formed. There is only change in size, shape and phase etc.

Chemical change is a change in which there is change in the chemical arrangement and thus there is  redistribution of atoms. which leads to formation of new substances.

Explanation:

hope it help

Answer:

c

Explanation:

Coal-burning power plants is an anthropogenic source of sulfur dioxide

Anthropogenic sources refer to human activities that contribute to the release of certain substances or pollutants into the environment. In this case, coal-burning power plants are known to be a significant anthropogenic source of sulfur dioxide (SO2) emissions. When coal is burned as a fuel in power plants, it releases sulfur dioxide into the atmosphere as a byproduct of combustion. This is a major contributor to air pollution and can have detrimental effects on human health and the environment. The other options listed, such as a barbecue grill running on natural gas, a jogger out of breath in a marathon, and volcanic eruptions, are not typically associated with significant anthropogenic sulfur dioxide emissions.

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Answer:

aufbau principle

Explanation:

The Aufbau principle states that electrons fill lower-energy atomic orbitals before filling higher-energy ones (Aufbau is German for "building-up"). By following this rule, we can predict the electron configurations for atoms or ions.

Approximately 3.04 grams of magnesium would be required to react with 0.25 moles of hydrochloric acid.

To determine the mass of Mg required, we need to use the balanced chemical equation for the reaction between hydrochloric acid (HCl) and magnesium (Mg):

2HCl + Mg → MgCl2 + H2

From the balanced equation, we can see that 2 moles of HCl react with 1 mole of Mg. Therefore, if 0.25 mol of HCl reacts, we would need half of that amount, which is 0.125 mol of Mg.

To calculate the mass of Mg required, we need to multiply the number of moles of Mg by its molar mass. The molar mass of Mg is given as 24.31 g/mol. Therefore, the mass of Mg required can be calculated as follows:

Mass of Mg = Number of moles of Mg × Molar mass of Mg

Mass of Mg = 0.125 mol × 24.31 g/mol

Mass of Mg = 3.04 g

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Answer:

Explanation:

The circulatory system is made up of blood vessels that carry blood away from and towards the heart The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.....etc

The most important thing in the circulatory system is The heart.

It pumps blood around the body. It sits inside the chest, in front of the lungs, and slightly to the left side. The heart is a double pump made up of four chambers, with the flow of blood going in one direction due to the presence of the heart valves.

The chief function of the circulatory system is,

Oxygen and Carbon Dioxide Transport.

(Circulates OXYGEN and removes Carbon Dioxide)

Other functions of the circulatory system are:

Nutrient and Waste Product Transport.

Disease Protection and Healing.

Hormone Delivery.

Body Temperature Regulation.