Write the complete balanced equation, total ionic equation and net ionic equations for the following reactions. You will need to use information from lab 7 to answer the questions.



a) Lithium carbonate(aq) and sulfuric acid(aq) -->

b) Potassium nitrate(aq) and magnesium chloride(aq) -->

Answer:

97.5%

Explanation:

the US mint specifies pennies as 2.5% copper in 97.5% zinc

The preparation of bases involves several methods that are used to create substances with basic or alkaline properties are Reaction of metal with water, Reaction of metal oxide with water, Neutralization reaction, Ammonia gas dissolving in water and Partial neutralization of a strong base with a weak acid.

Reaction of metal with water: Certain metals, such as sodium or potassium, react with water to form hydroxides. For example, sodium reacts with water to produce sodium hydroxide (NaOH).

Reaction of metal oxide with water: Metal oxides, such as calcium oxide (CaO) or magnesium oxide (MgO), can be added to water to form metal hydroxides. This process is known as hydration. For instance, when calcium oxide reacts with water, it forms calcium hydroxide (Ca(OH)2).

Neutralization reaction: Bases can be prepared by neutralizing an acid with an appropriate alkaline substance. This involves combining an acid with a base to form water and a salt. For example, mixing hydrochloric acid (HCl) with sodium hydroxide (NaOH) results in the formation of water and sodium chloride (NaCl).

Ammonia gas dissolving in water: Ammonia gas (NH3) can dissolve in water to form ammonium hydroxide (NH4OH), which is a weak base.

Partial neutralization of a strong base with a weak acid: Mixing a strong base, such as sodium hydroxide (NaOH), with a weak acid, like acetic acid (CH3COOH), results in the formation of a base with a lesser degree of alkalinity.

These methods are utilized in laboratories, industries, and various applications where bases are required, such as in the production of cleaning agents, pharmaceuticals, and chemical reactions. Each method has its own advantages and specific applications depending on the desired base and its properties.

The question was incomplete. find the full content below:

What are the various methods involved in the preparation of bases?

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Answer:

The answer to your question is A - electrons

Explanation:

To be honest it's pretty obvious, none of the other things could possibly come with valence behind it so electrons is the only logical answer.

Answer:

A. electrons

Explanation:

The valence electrons on the valence shell which is the last layer of electrons are the same for atoms in the same column.

Answer:

Organ Movement Food Particles Broken Down

Stomach Upper muscle in stomach relaxes to let food enter, and lower muscle mixes food with digestive juice Proteins

Small intestine Peristalsis Starches, proteins, and carbohydrates

Pancreas None                    Carbohydrates, fats, and proteins

Liver         None                Fats

Explanation:

The flask will have the greatest number of collisions per second with the walls of the container is Flask A: CO at 760 torr and 0 °C.

The Collision of the molecules with the wall of the container will be  depend on the pressure. Therefore, the flask with the highest pressure have the greatest no of the collisions. As flask A has the highest pressure of 760 torr, Therefore, the flask A has the greatest number of the collusions per second with the walls of the container.

Thus the flask A with CO gas will have the greatest number of collisions per second with the walls of the container.

This question is incomplete, the complete question is :

Consider three identical flasks filled with different gases.

Flask A: CO at 760 torr and 0 °C

Flask B: N₂ at 250 torr and 0 °C

Flask C: H₂ at 100 torr and 0 °C

which flask will have the greatest number of collisions per second with the walls of the container?

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(a) The reaction is endothermic.

(b) The heat is coming from the surroundings.

(c) The heat is absorbed by the reaction.

(a) The reaction is endothermic because the beaker feels cool in your hand. In an endothermic reaction, heat is absorbed from the surroundings, resulting in a decrease in the temperature of the immediate environment.

(b) The heat is coming from the surroundings. As the reaction proceeds, it requires energy in the form of heat, which it absorbs from the surrounding environment.

(c) The heat is going into the reaction. In an endothermic reaction, heat energy is absorbed by the reactants, causing their temperature to increase. This absorption of heat allows the reactants to undergo the chemical reaction and proceed toward the formation of products.

Overall, in an endothermic reaction, the heat is absorbed from the surroundings, causing the beaker to feel cool in your hand. The heat energy is utilized by the reaction to drive the chemical transformation of the reactants into products.

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William's grandfather has dementia . They feed him, bathe him, and care for his daily needs. William and his family are serving as volunteer caregivers.

Dementia is a condition in which a person loses so much of their ability to think, remember, and reason that it makes it hard for them to do things they normally do. Certain individuals with dementia have no control over their feelings, and their characters might change.

Dementia is brought about by harm to synapses. The ability of brain cells to communicate with one another is disrupted as a result of this damage. At the point when synapses can't convey regularly, thinking, conduct and sentiments can be impacted.

There is at present no "fix" for dementia. In fact, there is unlikely to be a single treatment for dementia because it is caused by multiple diseases. Curing diseases that cause dementia, such as Alzheimer's, frontotemporal dementia, and dementia with Lewy bodies, is the goal of research.

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Water vapor does not implicate climate change as much as methane or carbon di oxide do because water vapor's concentration depends on temperature of earth's atmosphere unlike carbon compounds CO2 and CH4. But water vapor too is a green house gas.

Gases which cause green house effect is called green house gases. The greenhouse effect is the natural warming of the earth that results when gases in the atmosphere trap heat from the sun that would otherwise escape into space. Some green house gases are water vapor, Carbon Dioxide, Methane, Nitrous Oxide, Fluorinated Gases etc.

Gases in the atmosphere known as greenhouse gases have an impact on the energy balance of the planet. The so-called greenhouse effect is a result of these. Low concentrations of the three most well-known greenhouse gases—carbon dioxide (CO2), methane, and nitrous oxide—can be found in the atmosphere naturally. Earth would be a frozen wasteland without greenhouse gases.

By retaining some of the Earth's thermal energy so that it doesn't completely escape into space, greenhouse gases keep our world habitable. The greenhouse effect is a name for this heat-trapping phenomenon.

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Answer:

the rust formed because of the water sitting in sied a metal bowl for  long time but they can fix this if they get filters

Explanation:

The molarity of the solution produced by using the 15.2g of calcium chloride and the 345g of methanol (CH₃OH) is 0.397 M.

The expression for the molarity is as :

Molarity = moles of the solute / solvent in kg

The number of solute, calcium chloride = mass / molar mass

The molar mass of the calcium chloride = 110.98 g/mol

The number of solute, calcium chloride = 15.2 / 110.98

number of solute, calcium chloride = 0.137 mol

The mass of the sovent in kg = 45 g = 0.345 kh

The molarity = 0.137 / 0.345

The molarity = 0.397 M

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Answer:Hydrogen

Explanation:is the most abundant element in the universe (75%by weight or 88% of all of the atoms of the universe)

The boiling point of a liquid can be estimated from its vapor pressure using the Clausius-Clapeyron equation.

This equation relates the vapor pressure of a liquid to its boiling point and can be expressed as:

ln(P2/P1) = -ΔHvap/R * (1/T2 - 1/T1)

where P1 is the vapor pressure at temperature T1, P2 is the vapor pressure at temperature T2, ΔHvap is the enthalpy of vaporization, R is the gas constant, and ln denotes the natural logarithm.

To find the boiling point, you would need to know the vapor pressure at two temperatures and the enthalpy of vaporization. Rearranging the equation to solve for the boiling point, you would get:

T2 = -ΔHvap/R * (1/(ln(P2/P1)) + 1/T1)

Substituting the values of P1, P2, and T1 into the equation and solving for T2 will give you an estimate of the boiling point. Note that this equation is an approximation and assumes that the enthalpy of vaporization is constant over the temperature range of interest.

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Answer:

Cause/ effect relationship.

Explanation:

because the force is the cause of energy that is present and velocity is the effect (speed) that is present.

Answer:

Cassiterite is an ore of Sn.It is also called tinstone and has molecular formula of SnO

2 . It is heavy, metallic, hard tin dioxide that is the major ore of tin. It is colourless when pure, but brown or black when iron impurities are present.

The expected color of the starch complex formed during this experiment is b. blue.

The color of the starch complex formed during an experiment depends on the reagent used. The iodine reagent is used to detect the presence of starch. The color of the starch complex with iodine reagent is blue-black. This blue-black color is because the iodine molecules enter the helix structure of the starch molecules and forms an iodine-starch complex.

Iodine is a useful reagent for detecting starch because it changes color from yellow to blue-black when it interacts with the helix structure of starch molecules. When iodine reacts with the amylose helix, it forms a blue complex. The amylopectin complex produces a blue-black color in the presence of iodine. In both cases, iodine molecules are trapped within the helix structure of the starch molecule, resulting in a blue-black color.

The expected color of the starch complex formed during an experiment is blue-black. The intensity of the blue-black color depends on the concentration of the starch present in the solution. The more starch present in the solution, the more intense the blue-black color will be. If there is no starch present in the solution, then the iodine reagent will remain yellow in color. Therefore, blue-black is the expected color of the starch complex formed during this experiment.

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Answer:

ACIDS ARE WEAKER THAN WATER

Explanation:In general, alcohols are weaker acids than water because the OH group in alcohols is less polar than the OH group in the water. The electron releasing nature of the R group in alcohols decreases the polarity of the OH bond, which in turn decreases the acid strength of alcohols.

Answer:

Explanation:

hope it will help you

mark me a brilliant

Substance-induced vs. primary psychiatric conditions are identified after a full month of abstinence, as substance use can mimic psychiatric symptoms. Family history may also be relevant.

It might be challenging to distinguish between basic mental disorders and substance-induced disorders. Since drug usage might mirror mental symptoms, it is not always simple to spot them on the initial visit with the patient. Before reaching a final diagnosis, it is crucial to wait a full month of sobriety, since this will assist reveal any underlying psychological disorders that could be present.

Given that certain psychiatric diseases have a hereditary component, family history might be useful in identifying the condition's nature. Secondary problems can also arise as a result of ongoing opioid usage.

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Answer:

True

Explanation:

The digestive system of organisms transforms raw materials of food into nutrients and energy laden substances that can be used by the body.

In the digestive process, both mechanical actions such as grind and chemical reactions occurs together.

The process breaks down complex organic compounds usually derived from plants and other animals into simpler units that are very readily useful for the body.

For example, the end product of rice after digestion is glucose which is an energy material which the body takes up for use.

Answer:

Plasma

Explanation:

Estimated to be 99.999% of the visible universe, cosmic plasma may be considered to be the first state of matter, that preceded the other states of matter in the history of the evolution of the Universe.

Answer:

scientific community's consensus on the human causes of global climate change

Explanation:

The new pH of the buffer can be calculated using the following equation:pH = pKa + log([base]/[acid])Where:pKa is the acid dissociation constant for CH3COOH (4.76)[base] is the concentration of CH3COO-[acid] is the concentration of CH3COOHPka = 4.76 [CH3COO-] = 0.050 M [CH3COOH] = 0.050 M + 0.015 M = 0.065 MpH = 4.76 + log(0.050/0.065) = 4.76 - 0.146 = 4.614The pH of the buffer solution is 4.614 after the addition of 0.015 mol of NaOH.

Buffer solutions can resist changes in pH even when an acid or base is added to them. A buffer is prepared by combining a weak acid and a salt of that acid or a weak base and a salt of that base. The buffer is made up of roughly equal amounts of the acid and the salt.When a small amount of acid or base is added to the buffer solution, it reacts with the acid or base present in the buffer to form the salt. As a result, there is little or no change in the buffer solution's pH, which is very useful in a number of laboratory and industrial applications. Calculate the pH of the solution upon the addition of 0.015 mol of NaOH to the original buffer.Here, the question is requesting the pH of a buffer after the addition of NaOH. The initial buffer's pH is 5.2. The buffer is made up of acetic acid (CH3COOH) and sodium acetate (CH3COONa).CH3COOH dissociates in water according to the following reaction:CH3COOH + H2O ⇌ H3O+ + CH3COO-CH3COO- + Na+ ⇌ CH3COONaAdding NaOH will increase the OH- concentration and decrease the H3O+ concentration of the buffer solution. This results in a higher pH. The NaOH reacts with CH3COOH to create CH3COO- and water. The new pH of the buffer can be calculated using the following equation:pH = pKa + log([base]/[acid])Where:pKa is the acid dissociation constant for CH3COOH (4.76)[base] is the concentration of CH3COO-[acid] is the concentration of CH3COOHPka = 4.76 [CH3COO-] = 0.050 M [CH3COOH] = 0.050 M + 0.015 M = 0.065 MpH = 4.76 + log(0.050/0.065) = 4.76 - 0.146 = 4.614The pH of the buffer solution is 4.614 after the addition of 0.015 mol of NaOH.

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Answer:

salt

Explanation:

cause salt is a solid item

Answer:

The pressure is doubled, 4.0atm

Explanation:

Based on Boyle's law, the pressure of a gas is inversely proportional to its volume at constant temperature. The equation that describes this law is:

P1V1 = P2V2

Where P is pressure and V volume at 1, initial state and 2, final state of the gas.

Computing the values of the problem:

P1 = 2.0atm

V1 = 3.0L

P2 = ?

V2 = 3.0L / 2 = 1.5L

Replacing:

2.0atm*3.0L = P2*1.5L

6.0atmL / 1.5L = P2

4.0atm = P2

In the electromagnetic spectrum, in order to avoid samples to absorb air while dealing with IR it is necessary that the sample must not come in contact with air.

The electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.

In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.

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Answer:

bh yftd5xsdcfvgbhnjm

Explanation:

from google, so I think the answer to that question is the second one