Which of these is a property of acids?

In the absence of stability information water containing formulations (prepared from ingredients in solid form) should be assigned by a beyond-use date that is: no later than 14 days when stored at cold temperature.

When to use beyond-use dates when preparing suspension?

When using manufactured solid dosage forms to prepare a solution or aqueous suspension, the compound is additionally to consider factors such as hydrolysis and the freeze-thaw property of the final preparation before assigning a beyond-use date.

What is solution and suspension?

While suspensions are heterogeneous mixtures, solutions are homogeneous mixtures. The particles of a suspension may be seen with the open eye, whereas the particles of an answer are at the ion or molecular level and cannot be seen with it.

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Answer:

homogenous mixture

Explanation:

no choices are given so that is my best guess

First, we write the reaction and balance it:

HNO2 (aq) + NH3 (aq) = NH4+ + NO2- (Balanced)

Data:

50 mL of 0.2 M HNO2

50 mL of 0.2 M NH3

In total, we have 100 mL, therefore, this solution between HNO2 and NH3 will be diluted in half. I mean: The concentration of HNO2 and NH3 will be 0.10 M

HNO2 (aq) + NH3 (aq) = NH4+ + NO2-

Initial 0.10 M 0.10 M 0 0

reacts -x -x +x +x

Equilibrium 0.10-x 0.10-x +x +x

Now, we write Kc:

Values of x:

For 1) x = 0.0999

For 2)x = 0.1001

We choose number 1) x = 0.0999

Number 2 gives us a value higher than the initial values of concentration

Therefore, concentration in equilibrium of NH3 = 0.10-x =0.10 - 0.0999 = 0.00010M

Answer: A. 0.00010M

True, You can typically get your original sample back when utilizing functional group tests and elemental analysis to try to figure out a compound's structure.

Which test is applied to a compound's elemental analysis?

In an elemental analysis, the sodium test, also known as Lassaigne's test, is used to determine whether certain foreign elements, such as halogens, nitrogen, sulfur, and phosphorus, are present in an organic compound.

What analytical techniques can be used to ascertain a compound's structure?

The four primary methods are mass spectrometry, nuclear magnetic resonance (NMR) spectroscopy, infrared (IR), and ultraviolet and visible spectroscopy. A minimal amount of sample is required for spectroscopy, and after an IR, NMR, or UV spectrum has been generated, the sample can be reused.

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The balanced equation for the dissociation of Ca(OH)2 in water is Ca(OH)2 → Ca2+ + 2OH-. From the equation, we know that for every Ca(OH)2 molecule, two OH- ions are formed. Therefore, the answer is B.

Therefore, the concentration of OH- ions in the solution is 2 × 7.5 × 10^-5 = 1.5 × 10^-4 M. Using the equation pH = -log[H+], we can find the pH of the solution. However, we need to find the concentration of H+ ions first. Since the solution is basic, we know that [H+] = Kw/[OH-] = 1.0 × 10^-14/1.5 × 10^-4 = 6.67 × 10^-11 M. Substituting this value in the pH equation, we get pH = -log(6.67 × 10^-11) = 10.18. Therefore, the answer is B.

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Answer:

Im not sure if they're all right but i hope this helps <3

Explanation:

nonliving:

- it doesn't need to consume energy to survive

- its not able to regulate its temperature

- they replicate by invading living cells

- living things have cells whereas viruses do not

- they aren't made of living cells

- they don't produce waste products

- they don't grow

living:

- they can adapt to their environment

- living things have different levels of organization and so do viruses

- viruses can infect other viruses. If a virus can get sick it should be considered a living thing.

Carbon electrodes are changed frequently in electrolysis as the carbon in the carbon electrodes burns to give out Carbon-di-oxide.

Carbon electrodes are used in electrolysis to facilitate the transfer of electrons between the anode and the cathode. The carbon electrode is usually in the form of a rod or plate and is electrically connected to the anode.

The carbon electrode may also be used to help reduce the overall resistance of the electrolytic cell.

Carbon electrodes are used in electrolysis because they are chemically inert and have a high electrical conductivity.

However, carbon electrodes must be changed frequently because they become corroded and lose their electrical conductivity over time.

This is because carbon burns out in the Carbon electrodes to give out Carbon-di-oxide. That is why the carbon anodes should be changed frequently.

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Answer:

Table salt+water

Explanation:

When hydrochloric acid and sodium hydroxide interact it results in the formation of salt and a release of heat. The result of these 2 highly aggressive compounds is table salt and water. (Compounds that are ultimately harmless, even beneficial to us human beings)

Hope i helped

Answer: A.En Hedu'Anna

Answer:

En Hedu’Anna!

Explanation:

Answer:

84,007 g/mol

Explanation:

Molar mass of NazCO3 which is Sodium Bicarbonate (NaHCO₃) is 84,007 g/mol

A girl roller-skating has kinetic energy.

Kinetic energy is the energy of motion. It is the energy possessed by an object due to its movement. In this case, the girl roller-skating has kinetic energy because she is moving.

Potential energy is the energy an object possesses due to its position or configuration. It is the energy an object has stored within it, ready to be released. An object at rest has potential energy because it has the potential to be set in motion and does work.

So, in this case, the girl roller-skating has kinetic energy because she is moving, and not potential energy because she is not at rest.

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Answer: To show the number of atoms present.

Explanation: As in CO² (Carbon dioxide), there is a small 2 next to the symbol "O" (oxygen) to explain that there are two oxygen atoms.

Nitrogen has an atomic number of 7, which means it has 7 electrons. The electron configuration for nitrogen is 1s²2s²2p³. The 3rd electron in a nitrogen atom occupies the 2s orbital.

Now let's identify the quantum numbers for this 3rd electron:
1. Principal quantum number (n): This represents the energy level of the electron. In this case, the 3rd electron is in the 2s orbital, so n = 2.
2. Azimuthal quantum number (l): This indicates the shape of the orbital. For an s-orbital, l = 0.
3. Magnetic quantum number (m_l): This describes the orientation of the orbital in space. Since there's only one orientation for the s-orbital, m_l = 0.
4. Spin quantum number (m_s): This describes the spin of the electron. In an s-orbital, there can be two electrons with opposite spins. Since the 3rd electron is the first electron in the 2s orbital, m_s = +1/2.

To summarize, the quantum numbers for the 3rd electron of a nitrogen atom are as follows: n = 2, l = 0, m_l = 0, and m_s = +1/2.

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Answer:

\(31^oC\)

Explanation:

Range = Highest value - Lowest value

A 'soft solder' melts between 183 °C and 212 °C.

Melting range of a 'soft solder' = \(212-183=29^oC\)

A 'hard solder' melts between 620 °C and 680 °C.

Melting range of a 'hard solder' = \(680-620=60^oC\)

So,

Difference in melting ranges = Melting range of a 'hard solder'  - Melting range of a 'soft solder' = \(60^oC-29^oC=31^oC\)

There are 1.313 grams in .093 liters of O₂ gas at STP.

First, we need to determine the number of moles present in 0.093 liters of O₂ gas. This can be done using the ideal gas law equation which is PV = nRT where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant and T is the temperature.

We know that at STP, the temperature is 273K, the pressure is 1 atm and R = 0.0821 L atm/mol K. Therefore, n = (PV)/(RT) = (1 atm x 0.093 L)/(0.0821 L atm/mol K x 273 K) = 0.00346 mol. Next, we can find the mass of 0.00346 moles of O₂ using the molar mass of O₂ which is 32 g/mol. Therefore, mass = moles x molar mass = 0.00346 mol x 32 g/mol = 0.1107 g or 1.313 grams rounded to three significant figures.

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Answer:

Yes.

Explanation:

The mass of a neutron is roughly equal to 1.008 atomic mass units. When converted into kilograms, the mass of the neutron can be approximated to 1.674*10-27 kg.

Answer:

1.346 meters per second

Explanation:

You traveled 35 meters in 26 seconds

35 / 26 = avg speed.

35 / 26 = 1.346...

Answer: c

Explanation: edpuzzel

Taking into account the definition of calorimetry, the final temperature of the mixed water is 48.91°C.

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

When heat added or removed from a substance causes a temperature change in it without affecting its molecular structure, it is called sensible heat.

The equation that allows to calculate heat exchanges is:

Q = c× m× ΔT

where:

In this case, you know:

Replacing in the expression to calculate heat exchanges:

If two isolated bodies or systems exchange energy in the form of heat, the quantity received by one of them is equal to the quantity transferred by the other body. That is, the total energy exchanged remains constant, it is conserved.

The heat that the hot water gives up will be equal to the heat that the cold water receives. Therefore:

- Qhot water= + Qcold water

- 4.184 J/g⁰C× 75 g× (Tfinal - 77.2°C)= 4.184 J/g⁰C× 100 g× (Tfinal - 27.7°C)

Solving:

- 313.8 J/⁰C× (Tfinal - 77.2°C)= 418.4 J/⁰C× (Tfinal - 27.7°C)

- 313.8 J/⁰C× Tfinal + 24,225.36 J= 418.4 J/⁰C× Tfinal - 11,589.68 J

24,225.36 J + 11,589.68 J= 418.4 J/⁰C× Tfinal + 313.8 J/⁰C× Tfinal

35,815.04 J= 732.2 J/⁰C× Tfinal

Tfinal= 35,815.04 J÷ 732.2 J/⁰C

Tfinal= 48.91 °C

Finally, the final temperature is 48.91°C.

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Fatty acid groups are referred to as B) acyl groups.

Fatty acids are organic compounds that consist of a long hydrocarbon chain with a carboxyl group (-COOH) at one end. The hydrocarbon chain is composed of carbon and hydrogen atoms, and its length can vary. Fatty acids play essential roles in various biological processes and are major components of lipids, including triglycerides and phospholipids.

When a fatty acid is involved in chemical reactions or is attached to other molecules, it typically undergoes a process called activation, where it is converted into an acyl group. An acyl group is formed by replacing the -OH (hydroxyl) group of the carboxyl group with an -OR (alkoxy) group. The -OR group can be derived from various molecules, such as coenzyme A (CoA) or other acyl carrier proteins.

For example, when a fatty acid is activated for incorporation into a triglyceride molecule, it forms a triglyceride acyl group. Similarly, when a fatty acid is incorporated into a phospholipid molecule, it forms a phospholipid acyl group. The acyl group represents the hydrocarbon chain of the fatty acid, which may vary in length and saturation.

Therefore, the correct answer to the question is B) Acyl.

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The given statement "A cash budget uses short-term financial goals to help you reach long-term financial goals." is True. A cash budget is a tool that helps manage short-term financial goals by tracking income and expenses.

A cash budget is a financial tool that helps individuals or businesses manage their cash flow by forecasting their cash inflows and outflows over a certain period of time. By creating a cash budget, you are able to set short-term financial goals that align with your long-term financial goals. For example, if your long-term financial goal is to save for a down payment on a house, your short-term financial goal may be to reduce your monthly expenses and increase your income to save more money towards that down payment.

A cash budget helps you track your progress towards your short-term financial goals and adjust your spending habits accordingly to ensure you are on track to reach your long-term financial goals. Therefore, a cash budget is an effective tool for achieving long-term financial success.

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The palmitic acid is attached to the glycerol backbone, and two stearic acid molecules are also attached to the glycerol backbone.

This configuration yields twice as much stearic acid as palmitic acid upon complete hydrolysis.

           O

           ||

Palmitic acid - C-O-Glycerol

           ||

           O

           ||

Stearic acid - C-O-Glycerol

           ||

           O

           ||

Stearic acid - C-O-Glycerol

           ||

           O

To determine the structure of the fat that satisfies the given conditions, let's analyze the information provided.

We know that the fat is optically active, meaning it can rotate the plane of polarized light. Additionally, when this fat is completely hydrolyzed, it yields twice as much stearic acid (C18:0) as palmitic acid (C16:0).

From this information, we can infer that the fat consists of three fatty acid chains, one of which is palmitic acid and the other two form stearic acid.

The molecular formula for palmitic acid is C₁₆H₃₂O₂, while the molecular formula for stearic acid is C₁₈H₃₆O₂.

To create a fat with these fatty acid chains, we need to consider a molecule that can accommodate one palmitic acid and two stearic acid chains.

One possibility is a triglyceride, which consists of a glycerol molecule bonded to three fatty acid chains.

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Answer:is a trace metal of severe toxicity. Its health concerns via consumption of contaminated vegetables have often been overlooked or underestimated

Explanation: Read it carefully and it explains

Answer:

Organisms move and eat through their habitats. They adapt to the environment and can survive in the environment with their own behavior.

Explanation:

Organisms are of many types. Some lives on land, some lives in water while others are hybrid organisms which can survive in water as well as on land. The organisms body movement is dependent on its cell functioning. Every organism has different cell structures which help them to survive on the earth.

Answer: D. Investigation 4

Answer:

Investigation D

Explanation:

0.129569. You have to divide the mass value by 1000.

answer:

The mass of 4×10²¹ atoms Pt is ≈ 1 g Pt.

explanation:

Answer:

Advantages of Wind Energy -

Disadvantages of Wind Energy-

https://justenergy.com/blog/wind-energy-pros-and-cons/

hope this site might help you with the details

Answer:

A

Explanation:

Answer:

Electrical forces can act from a distance

Explanation:

A. Because electrical forces act at a distance, charged objects brought near a neutral object will cause electrons on the neutral object to rearrange their position