Predict the changes in the equilibrium position for this reaction when the following changes are made. In each case, state whether the change causes a shift that favors the formation of reactants or of products.
2A(g) +B(g)↔ 4C(g)+heat
a. increase the pressure

b. increase the concentration of A

c. decrease the concentration of C

d. add more heat

He could improve the model if he place Earth between the moon and the sun.

We know that the solar system is composed of the sun and the planets and we can have a model of the solar system when we get together the sun and the other parts of the solar system as has been done in the model that was put together by Dwight .

Since the model was intended to show the eclipse of the moon then the model can be improved if he place Earth between the moon and the sun in the image of the  model

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The molarity of vinegar is 0.47368421 moles per liter.

To calculate this, we can use the following formula:

molarity = (initial_volume - total_volume_change) / final_volume

In this case, the initial volume is 7.5 mL, the total volume change is 21 mL, and the final volume is 28.5 mL. Plugging these values into the formula, we get:

molarity = (7.5 - 21) / 28.5 = -0.47368421

The negative value for molarity indicates that the solution is diluted. This is because the total volume of the solution increased by 21 mL, while the amount of solute (acetic acid) remained the same.

It is important to note that the molarity of a solution can change depending on the temperature. This is because the volume of a solution expands as it gets warmer. Therefore, it is important to measure the volume and temperature of a solution at the same time to get an accurate measurement of its molarity.

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Answer:

Explosive eruptions from Composite or strato volcano

Explanation:

since they have multiple holes of exit, they can get pretty explosive.

The Transcontinental Railroad was the main development that started a large movement of settlers to California. It was the first railway line to span the entire continent, connecting the east and west coasts of the United States.

The railroad greatly facilitated migration and allowed for widespread settlement of the West. It improved communication between the east and west coasts, sped up transportation, and made it possible for a more productive interchange of goods.

Also, the railroad made it possible for prospectors to reach California in search of the California Gold Rush. Also, the railroad made it possible for cattle ranchers to transport their herds of cattle to the California stockyards.

As a result, there was more beef available, which aided in the state's agriculture sector's expansion. Also, the railroad offered an effective way to ship mining and agricultural goods to the east coast.

Hence, the Transcontinental Railroad served as the main driving force behind the massive migration of settlers to California.

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Answer:

tetrafluoroethane

Explanation:

Its an HCFC, which are the refrigerants that destroy the ozone layer.

Answer:

Freon.

Explanation:

Brainliest plz???

Schrodinger's Quantum Mechanical Model, which is currently recognised by modern science, is the electron model. The electron cloud model is another name for this one.

The term "electron cloud" refers to the current atomic structure model. A physicist from Austria named Edwin Schrodinger argued that electrons do not follow static or permanent trajectories.

The contemporary atomic model, often known as the cloud model, depicts atoms as having a nucleus made up of protons and neutrons and a diffuse gradient or cloud surrounding it that is made up of electrons. Because electron activity is probabilistic, electrons are often depicted as clouds.

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Answer:

We actually output other gases like methane lol

Explanation:

Well since most of the air we breathe is made up of nitrogen we also breathe out nitrogen

Source: da brain

Hope this helps you! :)

Please mark brainiest

It would help me a lot!

Thank you!

Answer:

our body needs oxygen for certain processes in the body .When the work is done oxygen is transformed into carbon dioxide .So, oxygen is inhaled while carbon dioxide is exhaled.

Table salt does not melt on the stove, it dissolves in water and does not conduct electricity.

There are several substances listed in the table Epsom salt is another one of these substances. It does not melt on a stove, it dissolves in water and also conducts electricity.

Finally, potassium chloride does not melt on the stove, it dissolves in water and it does conduct electricity. These are the experiences one can have with these common substances.

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Answer:

.572 is the correct answer

An expression for Henderson's pH of acids and bases are given below-

pH = pKa + log\(\frac{conjugate base}{acid}\)

pOH = pKb + log\(\frac{conjugate acid}{base}\)

The Henderson-Hasselbalch equation provides a relationship between the pH of acids (in aqueous solutions) and their pKa (acid dissociation constant). The pH of a buffer solution can be estimated with the help of this equation when the concentration of the acid and its conjugate base, or the base and the corresponding conjugate acid, are known.

The Henderson-Hasselbalch equation fails to predict accurate values for the strong acids and strong bases because it assumes that the concentration of the acid and its conjugate base at chemical equilibrium will remain the same as the formal concentration (the binding of protons to the base is neglected).

Since the Henderson-Hasselbalch equation does not consider the self-dissociation undergone by water, it fails to offer accurate pH values for extremely dilute buffer solutions.

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Answer:

The average temp will increase

Explanation:

Carbon dioxide levels will cause global warming to increase and therefore the temp will increase

Hope this helps :)

A list of the ten (10) concepts or words that are associated with motion include the following:

Motion can be defined as a change in the location (position) of a physical object or body with respect to a reference point and time, especially due to the action of an external force.

In Science, there are different types of motion and these include the following:

Generally, there are different concepts, phenomena and words that are associated with motion​​. A list of this ten (10) concepts or words include the following:

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The word "symptom" refers to a specific manifestation or indication of a condition, disease, or disorder that is experienced or observed by an individual.

Symptoms are subjective or objective changes in the body's normal functioning that may be recognized as abnormal, uncomfortable, or problematic. Symptoms can manifest in various ways depending on the nature of the underlying condition. They can be physical, such as pain, rash, cough, fever, or fatigue, indicating an illness or injury affecting the body. Symptoms can also be psychological, such as anxiety, depression, or confusion, reflecting disturbances in mental health.

Symptoms serve as important clues for medical professionals to identify and diagnose diseases or disorders. They provide valuable information about the nature, severity, and progression of an illness, helping healthcare providers formulate appropriate treatment plans. Additionally, symptoms may also be important for individuals to self-assess their own health status and seek appropriate medical attention.

It is essential to note that symptoms alone may not provide a definitive diagnosis, as they can overlap across different conditions. Further evaluation, including medical tests and examinations, is often necessary to confirm a diagnosis and determine the appropriate course of action.

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The society with the least negative effects on the environment is probably the one with a small population, traditional farming methods, no access to contemporary technology, and self-sufficient food production.

This is due to the fact that their way of living is less dependent on modern infrastructure and technology, both of which have a negative impact on the environment. Additionally, their agricultural methods are probably more environmentally friendly and sustainable.

The environmental effects of the other societies on the list would all be greater. Because of the use of fossil fuels and the production of products that require a lot of resources, a big, industrialized society with high levels of consumption would have a significant carbon footprint.

It would still take a lot of resources to maintain its infrastructure and create products in a less populous, highly industrialized society with moderate consumption levels, which would have a negative effect on the environment.

Given that the size of the population alone would necessitate significant resource consumption and infrastructure development, a big population with moderate industrialization and consumption levels would also have a big effect on the environment.

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Answer:

A logic bomb and a time bomb are both types of malicious software or code that are designed to cause harm to a computer system or network. Here's a brief explanation of each:

Logic Bomb:

A logic bomb is a piece of code or software that is intentionally inserted into a system to execute a malicious action when specific conditions are met. It remains dormant until triggered by a predefined event or circumstance, such as a specific date, time, or user action. Once triggered, the logic bomb may perform various harmful actions, such as deleting files, corrupting data, or disrupting system functionality. The purpose of a logic bomb is often to cause damage or to gain unauthorized access to a system.

Time Bomb:

A time bomb is similar to a logic bomb, but it is specifically designed to activate or execute its malicious payload at a certain date or time. It is usually programmed to remain undetected until the predetermined time arrives. The time bomb can be set to trigger after a specific time period or on a particular date, at which point it may carry out destructive actions. Time bombs can be used by attackers to target specific events or to coordinate an attack to occur simultaneously across multiple systems.

Both logic bombs and time bombs are considered forms of malicious code or malware and are used with malicious intent to disrupt, damage, or compromise computer systems or networks. They can be extremely harmful, and it is important to have strong security measures, such as antivirus software and regular system updates, to protect against such threats.

Explanation:

Answer:

Collecting data

Explanation:

Scientific inquiry can be explained as methods undertook by scientists to profer solutions, explanations, predict natural occurence and to some extent solve some of the problems of the earth through scientific study and processes. Evidence of solutions is made available to be built upon by also other scientists in the near future.

process of scientific inquiry include, in no particular order:

Note, that the explanation below doesn't follow any order.

1. Formulating questions: This is the problem that needed to be solved. Scientific inquiries usually begin with a question that can be proven scientifically.

2. Observation: taking neccessary information for the experiment.  Collecting data (answer to the question) falls under this process as information collected are used to carry out the experiment.

3. Hypothesis: Based on the observation and test carried out, scientists provide answers to the experiment, however methods used remain open for further experiments by other scientists. This is done so the results are tested and proven before they can be generally accepted as a rule or law.

4. Experiment: the experiment is carried out here.

5. Data analysis: Here the data collected are analysed using scientific methods.

6. Results: This stage shows the other aforementioned stages took place. Results of the scientific research/experiment are published.

Answer:collecting data

Explanation:i did it on study island

Over-tilling and Over farming are the two processes that can harm the fertility of the soil.

Over-tilling refers to the exceeding levels of tilling and levelling the soil which adversely affects the quality of the soil. This is because tillage fractures the soil, it disrupts soil structure, accelerating surface runoff and soil erosion. Tilling of soil also reduces crop residue, which help cushion the force of pounding raindrops.

Without crop residue, soil particles become more easily dislodged, being moved or 'splashed' away. The splashed particles clog soil pores, effectively sealing off the soil's surface, resulting in poor water infiltration and hence subsequently affects the soil fertility.

Similarly, the main effect of over-farming is soil depletion. When crops are grown in the same place year after year, the soil becomes depleted of the nutrients that the plants need to grow. This can lead to lower yields and poorer quality crops. In extreme cases, it can lead to desertification.

So, these two are the processes that can harm soil fertility.

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The equilibrium mole fractions {xi} and {yi} of the liquid and vapor phases can be determined using the Raoult's law and the ideal gas law.

Raoult's law states that the vapor pressure of a component in a liquid mixture is equal to the product of its mole fraction and its pure component vapor pressure. P = xi * Pi .The ideal gas law relates the pressure, temperature, and molar amount of a gas. PV = nRT . To determine the equilibrium mole fractions {xi} and {yi} of the liquid and vapor phases, we would need more information about the conditions T and P, such as the pressure, temperature and the vapor pressures of each component at the given temperature. Also the vapor pressures of each component at the given temperature are needed. It's also important to note that the vapor pressures of each component at the given temperature are needed. With the vapor pressures and the mole fractions, we can use the Raoult's law to find the vapor pressures of each component, and use the ideal gas law to find the mole fractions {yi} in the vapor phase. And then by using the mole fractions in vapor and liquid phases, the mole fractions of the liquid phase {xi} can be calculated.

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Answer:

alkali metals

Explanation:

alkali metals only have one valence electron, meaning they are extremely reactive. they are considered the most reactive on the periodic table.

Answer:

if the forces among the particles that makeup the nucleus are balanced, it is stable. Stable atoms retain their form indefinitely, while unstable atoms undergo radioactive decay. Most naturally occurring atoms ate stable and do not decay. A stable atom has a net charge of 0. In other words, It has an equal number of protons and electrons.

Therefore, if 3.0 moles of Potassium chlorate are completely destroyed, 4.5 moles of oxygen will form.

Therefore, there will be 36=18 moles of water molecules in 3 moles of the material. Keep in mind that there are 6.02 x 1023 molecules in a mole of molecules. Thus, there will be 6.021023181.081025 water molecules in total here.

If 2 moles of Potassium chlorate decompose to form 3 moles of oxygen, then 1 mole of Potassium chlorate will decompose to form 3/2 moles of oxygen.

Therefore, to find out how many moles of oxygen will form from 3.0 moles of Potassium chlorate, we can use the following calculation:

moles of oxygen = moles of Potassium chlorate x (3/2)

\(moles of oxygen = 3.0 mol x (3/2)\)

moles of oxygen = 4.5 mol.

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The value of S2 is S₂ = 2.1 g/L.Approximately 2.1 g of the gas will dissolve in 2 L of water at 0.6 ATM, assuming the temperature remains constant.

To determine the amount of gas that will dissolve in 2 L of water at 0.6 ATM, we can use Henry's law, which states that the solubility of a gas is directly proportional to the partial pressure of the gas above the liquid.

According to Henry's law, the solubility of a gas can be represented as:S₁/P₁ = S₂/P₂,,where S₁ and S₂ are the solubilities of the gas at the respective pressures P₁ and P₂.Given that 7 g of the gas dissolves in 1 L of water at 2.0 ATM, we can consider this as our initial condition, denoted by S₁/P₁.

Now, we need to find the solubility at 0.6 ATM in 2 L of water, denoted by S₂/P₂.Since the temperature remains constant, we can assume that the solubility of the gas does not change. Therefore, we can rewrite the equation as:

S₁/P₁ = S₂/P₂,

Substituting the known values, we have:

(7 g/1 L)/(2.0 ATM) = S₂/(0.6 ATM),

Solving for S₂, we get:

S₂ = (7 g/1 L) * (0.6 ATM)/(2.0 ATM),

S₂ = 2.1 g/L.

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Answer: The bond angle remains 120

Explanation:

Answer:

sodium chloride is an ionic molecule . which is typically the case when metals and nonmetals form bonds

Seawater contains salt, or sodium chloride, which is an ionic compound formed from the bonding of a metal ion (sodium) and a nonmetal ion (chloride) through the transfer of electrons. The ions' opposite charges attract to form the ionic bond.

Seawater contains a significant amount of salt, often referred to as sodium chloride. This is a type of ionic compound that consists of a metal ion, sodium (Na), bonded with a nonmetal ion, chloride (Cl). The bond between these ions is formed through the transfer of electrons, resulting in a neutral compound. This is typical of salts, which often consist of a metal and nonmetal ion. The sodium ion carries a positive charge and the chloride ion carries a negative charge, and their attraction forms the ionic bond which holds the salt molecule together in seawater.

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Using the prefix method for covalent compounds, the names of the given compounds are shown below:

LIF: Lithium fluoride

Cl2O7: Dichlorine heptoxide

N2O3: Dinitrogen trioxide

SF6: Sulfur hexafluoride

Na3PO4: Sodium phosphate

A covalent bond is  described as a chemical bond that involves the sharing of electrons to form electron pairs between atoms.

The properties of covalent compounds includes:

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The net ionic equation for the reaction between potassium sulfide and magnesium iodide is S2- + Mg2+ -> MgS, as the potassium and iodide ions are spectator ions and do not participate in the reaction.

To determine the net ionic equation for the reaction between potassium sulfide (K2S) and magnesium iodide (MgI2), we first need to identify the ions present in each compound and then determine the products formed when they react.

Potassium sulfide (K2S) dissociates into two potassium ions (K+) and one sulfide ion (S2-):

K2S -> 2K+ + S2-

Magnesium iodide (MgI2) dissociates into one magnesium ion (Mg2+) and two iodide ions (I-):

MgI2 -> Mg2+ + 2I-

Now, we need to determine the possible products when these ions combine. Since potassium (K+) has a +1 charge and iodide (I-) has a -1 charge, they can combine to form potassium iodide (KI):

K+ + I- -> KI

Similarly, magnesium (Mg2+) and sulfide (S2-) can combine to form magnesium sulfide (MgS):

Mg2+ + S2- -> MgS

Now, we can write the complete ionic equation by representing all the ions present before and after the reaction:

2K+ + S2- + Mg2+ + 2I- -> 2KI + MgS

To obtain the net ionic equation, we remove the spectator ions, which are the ions that appear on both sides of the equation and do not participate in the actual reaction. In this case, the spectator ions are the potassium ions (K+) and the iodide ions (I-).

Thus, the net ionic equation for the reaction between potassium sulfide and magnesium iodide is:

S2- + Mg2+ -> MgS

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