When choosing a solvent for recrystallization, it is important that the solvent does not react with the solute.Yes / No

According to the equation, KOH + [tex]CO_2[/tex] → [tex]K_2CO_3[/tex] + [tex]H_2O[/tex], the mass of KOH that will be required to produce 145 grams of [tex]K_2CO_3[/tex] is 58.84 g

2 KOH + [tex]CO_2[/tex] → [tex]K_2CO_3[/tex] + [tex]H_2O[/tex] is the given equation.

Using Stoichiometry,

Two moles of KOH produce one mole of [tex]K_2CO_3[/tex]

Molar mass of KOH = 56 g

Molar mass of [tex]K_2CO_3[/tex] = 138 g

Since 2 moles of KOH are given, thus 56 * 2 = 112 g

Thus, 138 g of [tex]K_2CO_3[/tex] requires 112 g of KOH

1 g of [tex]K_2CO_3[/tex]  requires 112 / 138 g of KOH

= 0.811 g of KOH

145 g of [tex]K_2CO_3[/tex] requires 0.811 * 145 g of KOH

=117.68 g of KOH

Learn more about Stoichiometry:

https://brainly.com/question/30641314

#SPJ4

The concentration of ions in a strong base is higher than in a weak base. Strong bases dissociate completely in water, while weak bases only partially dissociate.

Strong bases, such as sodium hydroxide (NaOH) and potassium hydroxide (KOH), are 100% ionized in water. This means that they completely dissociate into their respective ions: Na+ and OH- or K+ and OH-. Therefore, the concentration of these ions in a strong base is much higher than in a weak base. Weak bases, on the other hand, only partially dissociate in water.

For example, ammonia (NH₃) only partially dissociates into NH₄+ and OH-. This means that the concentration of NH₄+ and OH- ions in a weak base is lower than in a strong base. The strength of a base is determined by its ability to accept protons (H+ ions), and the degree of dissociation in water plays a significant role in this ability. Strong bases have a higher affinity for protons than weak bases, making them more effective at neutralizing acids.

Learn more about ions here:

https://brainly.com/question/1488567

#SPJ11

Boyle used a J-shaped glass tube and a mercury-filled cylinder to determine the relationship between pressure and volume.

Boyle's apparatus consisted of a J-shaped glass tube, one end of which was closed and the other end was open. The open end of the tube was placed in a mercury-filled cylinder. The air was trapped in the tube by the mercury, and the pressure was measured using a mercury barometer.

By adding weights to the top of the mercury column, Boyle was able to increase the pressure on the air inside the tube. As the pressure increased, the volume of the air decreased. By measuring the volume of the air at different pressures, Boyle was able to determine the relationship between pressure and volume, which is now known as Boyle's Law. This law states that at a constant temperature, the volume of a gas is inversely proportional to its pressure.

Learn more about Boyle's Law here:

https://brainly.com/question/1437490

#SPJ11

There are several methods of reducing exposure to ionizing radiation. One method is to limit the time spent near a radiation source. This means reducing the amount of time spent in the presence of ionizing radiation to minimize exposure.

Another method is to increase the distance from the radiation source. By increasing the distance between oneself and the radiation source, the amount of radiation exposure decreases.

Additionally, shielding oneself with protective barriers such as lead aprons or walls can also reduce exposure to ionizing radiation. Other methods include practicing good hygiene such as washing hands and clothes frequently to avoid contamination by radioactive materials.

Overall, taking steps to reduce exposure to ionizing radiation is crucial in maintaining good health and preventing potential long-term effects.

To know more about ionizing radiation, visit:

https://brainly.com/question/9621276

#SPJ11

Entropy of the combined system after the two blocks came in contact with each other would increase.

Entropy is a measure of the disorder or randomness in a system. When two objects with different temperatures are brought in contact with each other, heat flows from the hotter object to the colder object until they reach thermal equilibrium, where they are at the same temperature. This transfer of heat leads to an increase in the entropy of the system because the energy is distributed more evenly, resulting in a more disordered or random system.

In this case, the block with the higher initial entropy (30 j/k) will release heat to the block with the lower initial entropy (10 j/k) until they reach the same temperature, resulting in an overall increase in entropy. The final entropy of the combined system will depend on the specific temperatures and heat capacities of the blocks, but it will always be greater than the initial entropy of the system before the two blocks were brought in contact.

To know more about Entropy, visit:

https://brainly.com/question/13999732

#SPJ11

When a reaction undergoes a transformation, the reagents play a crucial role. The chemical reaction is different for each reagent.

Reagent Grignard = R-Mg-X.

R stands for an aryl or alkyl group. X addresses halides (I,Br,Cl) . The principal reason for a Grignard reagent is the development of new C−C bond. An addition product is produced when Grignard reagent reacts with carbonyl groups  (like ketone ( {{ - C = O}}−C=O ), Aldehyde ( - C( = O)H}}−C(=O)H ),

Ester ( - C( = O)OR}}−C(=O)OR )) to form an addition product.  

the addition of nucleophiles, which have more electrons, and electrophiles, which have fewer electrons. The double bond is reduced to a single bond during this reaction.

The nucleophile (electron rich) replaces the leaving group by forming a bond with an electrophile (electron deficient).

Therefore, when a reaction undergoes a transformation, the reagents play a crucial role. The chemical reaction is different for each reagent.

Learn more about Nucleophiles :

brainly.com/question/14052597

#SPJ4

The volume of the sample of the pure HCl gas is 161 mL at the 26°C and 139 mmHg. The molarity of NaOH solution is 0.012 M.

The ideal gas equation is :

P V = n R T

Where,

The pressure, P = 1839 mmHg = 0.182 atm

Volume = 0.277 L

R is gas constant = 0.0823 L atm/K mol

Temperature = 26 +273.15 = 299 K

The number of moles of HCl, n  = P V / R T

The number of moles of HCl, n = ( 0.182 × 0.277 ) / ( 0.0823 × 299 )

The number of moles of HCl, n = 0.0020 mol

0.0020 mol of NaOH are needed to neutralize 0.0020 mol of HCl

The molarity is expressed as :

Molarity = moles / volume

The molarity = 0.0020 / 0.161

The molarity = 0.012 M

The molarity is 0.012 M.

To learn more about molarity here

https://brainly.com/question/31545539

#SPJ1

The new volume is 9.76L if a gas at STP occupies 28 [tex]Cm^{3}[/tex] of space and the pressure changes to 3.8 atm and the temperature increases to 203 c.

The ideal gas formula is given as:

[tex]\frac{P_{1}V_{1} }{T_{1} } = \frac{P_{2}V_{2} }{T_{2} }[/tex]

By Cross multiplying, we get

[tex]P_{1}V_{1} T_{2} = P_{2} V_{2} T_{1}[/tex]

Now, calculate second volume as:

[tex]V_{2} = \frac{P_{1}V_{1}T_{2} }{P_{2}T_{1} }[/tex]

[tex]P_{1}[/tex] = 760 ATM

[tex]V_{1}[/tex] = 0.028 L

[tex]T_{1}[/tex] = 273 K

[tex]P_{2}[/tex] = 3.8 ATM

[tex]V_{2}[/tex] =?

[tex]T_{2}[/tex] = 203°c to Kelvin equals to 273 + 203 = 476 K

Now, Substitute the values given into the formula:

760×0.028×476/3.8×273

=10129.28/1037.4

=9.76

Therefore the [tex]V_{2}[/tex] is 9.76L

The general gas equation, often known as the ideal gas law, is the equation of state for a fictitious ideal gas. It has a number of limitations, but it provides a decent approximation of the behavior of numerous gases under various circumstances.

The ideal gas law (PV = nRT) connects the macroscopic characteristics of ideal gases. The particles in an ideal gas don't interact with one another, take up no space, and have no volume.

An ideal gas is a fictitious gas that perfectly complies with the gas laws because its molecules take up very little space and interact with no one else. The term "ideal gas" refers to a gas that abides by all gas laws at any temperature or pressure.

Learn more about ideal gas law:

https://brainly.com/question/30458409

#SPJ4

The pH of the buffer solution is approximately 3.67.

To calculate the pH of the buffer solution, we need to first calculate the concentrations of the acid and its conjugate base after mixing the solutions.

The balanced chemical equation for the dissociation of lactic acid is:

CH3CH(OH)COOH  +  H2O  <-->  CH3CH(OH)COO-  +  H3O+

The acid dissociation constant (Ka) for lactic acid is 1.38 x 10^-4 at 25°C.

Using the Henderson-Hasselbalch equation, we can calculate the pH of the buffer solution:

pH = pKa + log([A-]/[HA])

where [A-] is the concentration of the conjugate base (sodium lactate) and [HA] is the concentration of the acid (lactic acid).

Step 1: Calculate the moles of lactic acid and sodium lactate

Moles of lactic acid = 0.13 mol/L x 0.085 L = 0.01105 mol

Moles of sodium lactate = 0.08 mol/L x 0.095 L = 0.0076 mol

Step 2: Calculate the total volume of the buffer

Total volume = 85 mL + 95 mL = 0.085 L + 0.095 L = 0.18 L

Step 3: Calculate the concentrations of lactic acid and sodium lactate

[HA] = moles of lactic acid / total volume = 0.01105 mol / 0.18 L = 0.0614 M

[A-] = moles of sodium lactate / total volume = 0.0076 mol / 0.18 L = 0.0422 M

Step 4: Calculate the pH of the buffer solution

pKa of lactic acid = -log(Ka) = -log(1.38 x 10^-4) = 3.86

pH = pKa + log([A-]/[HA])

= 3.86 + log(0.0422/0.0614)

= 3.86 - 0.19

= 3.67

Therefore,  by calculating we can say that the pH of the buffer solution is approximately 3.67.

To know more about the buffer solution refer here :

https://brainly.com/question/24262133#

#SPJ11

According to the question the correct answer is  A wooden headboard burns more quickly in a fire than an iron headboard.

Fire is a chemical reaction that involves the oxidation of a fuel source, typically in the form of hydrocarbons, which produces light, heat, and smoke. It is a natural process that has been used by humans for centuries to provide light, heat, and cooking. Fire is an important part of the Earth’s ecology, helping to clear out dead vegetation and allowing new growth. It is also used for purification and in ceremonies. Fire can be very dangerous and cause serious destruction and injury if not managed properly. Fire safety is extremely important, as even a small spark can cause a huge blaze if not extinguished quickly. Firefighters are trained to deal with fires, utilizing specialized equipment and techniques to control and put out fires. Fire can also be harnessed to create electricity and provide power for homes, businesses, and industry.

To learn more about fire

https://brainly.com/question/29849721

#SPJ1

Answer: The CORRECT answers are Calcium reacts with water at a moderate rate to form hydrogen gas and a base……and a wooden headboard burns more quickly in a fire than an iron headboard

To accommodate smaller flasks in a heating mantle, there are a few options you can consider. Firstly, you can use a flask adapter. Flask adapters are designed to fit smaller flasks into the heating mantle, while still providing enough stability to prevent spills or accidents.

These adapters are usually made from high-quality materials like stainless steel or glass, and they come in a range of sizes to accommodate different flask sizes.
Another option you can consider is using a heating mantle with an adjustable sleeve. Some heating mantles come with an adjustable sleeve that can be used to hold smaller flasks in place. The sleeve is designed to fit around the flask and provide enough support to prevent it from slipping or falling over during heating.
Lastly, you can consider using a heating mantle with multiple heating zones. Heating mantles with multiple heating zones allow you to heat different sections of the mantle independently. This means that you can use one section of the mantle to heat a larger flask, while using another section to heat a smaller flask.
In summary, to accommodate smaller flasks in a heating mantle, you can use flask adapters, adjustable sleeves, or heating mantles with multiple heating zones. All of these options provide enough support and stability to ensure that your smaller flasks are heated safely and effectively.

learn more about heating here

https://brainly.com/question/30407538

#SPJ11

Answer:

The answer to your question is 1m/sec.

Explanation:

The velocity of a molecule in a vacuum is 1m/sec.

Under lower and lower pressure, the molecules spread out further and further, until, at ultra-high vacuum (10 -12 mbar), there are only 2.65 x 104 or 26,500 molecules per cubic centimeter. At this density, there is only one molecule roughly every 0.33 mm in space.

I hope this helps and have a wonderful day!

The power supplied by the pump can be calculated using the equation:

Power = (Pressure Drop × Flow) / Efficiency.

Power is the ability to influence or control the behavior of people, things, or events. It is the capacity to act or produce an effect. Power can be derived from many sources, such as knowledge, authority, money, and physical strength. It can also be used for both good and bad purposes. Power is a fundamental concept in politics, economics, and social science. It is often used to describe the ability of individuals or groups to make decisions, control resources, and shape the environment. Power can also be used to describe the ability to affect or manipulate people’s behavior and beliefs. Ultimately, power is a complex concept that has different meanings in different contexts.

Therefore, the power supplied by the pump can be calculated as follows: Power = (25 kPa x 0.025 m3/s) / 0.7 = 178 W .Therefore, the power supplied by the pump is 178 W .

To learn more about power

https://brainly.com/question/2248465

#SPJ4

Blue is the color of a complex ion that absorbs light primarily in the 450 nm range. Option B is correct.

The color of a complex ion depends on the electronic transition involved in absorbing light. A complex ion that absorbs light primarily in the 450 nm range involves a transition from a ligand field to a d-orbital in the metal ion, which typically results in a blue color. A complex ion is a charged species composed of a central metal ion and surrounding ligands.

The color of a complex ion is determined by the electronic transitions that occur within the molecule. When a complex ion absorbs light, it excites electrons from their ground state to higher energy levels, and the color we observe is the complementary color of the light that is absorbed. Option B is correct.

To know more about the Complex ion, here

https://brainly.com/question/13018620

#SPJ4

The correct answer to the given question is Option a. 1.21.

The pH of a solution is defined as the negative logarithm of the hydronium ion concentration:

pH = -log[H3O+]

Substituting the given value:

pH = -log(6.1 x 10^-2) = 1.21

Therefore, the pH of this solution is 1.21.

The pH of a solution is a measure of its acidity or basicity, and is defined as the negative logarithm of the hydronium ion concentration in the solution. In this case, the given hydronium ion concentration is 6.1 x 10^-2 M, and using the pH formula of pH = -log[H3O+], we can calculate the pH of the solution. Substituting the value, we get pH = -log(6.1 x 10^-2) = 1.21. This means that the solution is highly acidic, as pH values below 7 are considered acidic. It is important to maintain proper pH levels in different chemical and biological systems, as pH can affect chemical reactions, enzyme activity, and the overall function of biological systems.

To know more about pH please visit:

https://brainly.com/question/15289741

#SPJ11

The rate at which the volume of the snowball is decreasing when the radius is 14 cm is approximately -247.11 cm³/min.

We can use the formula for the volume of a sphere, V = (4/3)πr³, to relate the volume V to the radius r.

Taking the derivative of both sides with respect to time t, we get:

dV/dt = 4πr² (dr/dt)

where dV/dt represents the rate of change of volume with respect to time, and dr/dt represents the rate of change of radius with respect to time.

We are given that dr/dt = -0.4 cm/min (negative because the radius is decreasing). We need to find dV/dt when r = 14 cm.

Plugging in the given values, we get:

dV/dt = 4π(14 cm)² (-0.4 cm/min) ≈ -247.11 cm³/min

Therefore, the volume of the snowball is decreasing at a rate of approximately 247.11 cm³/min.

To know more about volume, refer here:
https://brainly.com/question/1578538#
#SPJ11

An amide group is substituted directly into the location on the aromatic ring that is opposite to it in electrophilic aromatic substitution.

Why does aromatic amine electrophilic substitution occur?

By delocalizing the lone pair of electrons from the N-atom over the aromatic ring, the NH2 group of aromatic amines powerfully activates the aromatic ring. Aromatic amines are more easily subject to electrophilic substitution reactions than benzene because of the high activating effect of the -NH2 group.Directors in ortho/para are activated by amide groups.

In organic reactions known as electrophilic aromatic substitutions, an atom that is affixed to an aromatic ring is replaced by an electrophile. These reactions frequently include the replacement of an electrophile atom with a hydrogen atom from a benzene ring.

To learn more about lone pair use:

https://brainly.com/question/3915115

#SPJ4

HBr and KCH3COOH would generate a salt derived from a weak acid and a weak base.

Salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in its natural form as a crystalline mineral is known as rock salt or halite. Salt is present in vast quantities in seawater, where it is the main mineral constituent. Salt is essential for life in general, and saltiness is one of the basic human tastes. The tissues of animals contain larger quantities of salt than do plant tissues. Salt is one of the oldest and most ubiquitous food seasonings, and salting is an important method of food preservation.

To learn more about salt

https://brainly.com/question/20835655

#SPJ4

Answer:A Lunar eclipse occurs when the Sun casts Earth's shadow onto the Moon.

Explanation:

The Earth must be between the Sun and Moon with all three bodies lying on the same plane of orbit. Lunar eclipses must occur during the full moon, and  solar eclipses must occur when the Moon passes between the Sun and Earth, casting the Moon's shadow on Earth

At STP (Standard Temperature and Pressure), the reaction rate between a metal and an acid is determined by several factors including the size of the metal sample, the concentration of the acid, and the temperature. In this case, we are given a 4.0-gram zinc sample and dilute hydrochloric acid.

Zinc is a reactive metal and readily reacts with hydrochloric acid to form zinc chloride and hydrogen gas according to the following chemical equation:

Zn + 2HCl → ZnCl₂ + H₂

To determine which 4.0-gram zinc sample will react the fastest with dilute hydrochloric acid, we need to consider the surface area of the zinc. The greater the surface area, the faster the reaction rate. This is because a larger surface area provides more contact points for the acid to react with the zinc.

One way to increase the surface area of the zinc sample is to use a powdered form instead of a solid chunk. Powdered zinc has a larger surface area than a solid chunk of the same mass.

Therefore, a 4.0-gram powdered zinc sample will react faster with dilute hydrochloric acid compared to a 4.0-gram solid chunk of zinc.

Another factor to consider is the concentration of the acid. The more concentrated the acid, the faster the reaction rate. Dilute hydrochloric acid has a lower concentration of hydrogen ions compared to concentrated hydrochloric acid. This means that the reaction rate will be slower with dilute acid compared to concentrated acid.

Finally, the temperature also affects the reaction rate. Increasing the temperature of the acid will increase the kinetic energy of the molecules, which in turn increases the frequency of collisions between the zinc and acid molecules. This will result in a faster reaction rate.

In conclusion, to determine which 4.0-gram zinc sample will react the fastest with dilute hydrochloric acid at STP, we need to consider the surface area of the zinc, the concentration of the acid, and the temperature. A 4.0-gram powdered zinc sample will react faster than a 4.0-gram solid chunk of zinc. However, the reaction rate can be further increased by using a more concentrated acid and increasing the temperature.

To know more about STP, visit:

https://brainly.com/question/24050436

#SPJ11

Necessary ratio to make buffer solution will 0.39 : 1  [CH₃CO₂⁻]/[CH₃CO₂H] with pH of 4.34 according to Henderson–Hasselbalch Equation,

Option D is correct .

With respect to Henderson–Hasselbalch Equation,

                                   pH  =  pKa + log [Acetate] / [Acetic Acid]

As,                                       =  pKa + log[CH₃CO₂⁻]/[CH₃CO₂H]

          pKa = -log Ka

          pKa = -log (1.8 × 10⁻⁵)

          pKa =  4.74

So ,  pH  =  4.74 + log[CH₃CO₂⁻]/[CH₃CO₂H]

       4.34  =  4.74 + log [Acetate] / [Acetic Acid]

          4.34 - 4.74  = log[CH₃CO₂⁻]/[CH₃CO₂H]

       -0.40  =  log[CH₃CO₂⁻]/[CH₃CO₂H]

Taking Antilog of both sides,

             [Acetate] / [Acetic Acid]  = 0.39 : 1

 Hence , the required ratio to make buffer solution with pH will be 0.39 : 1  

The Henderson-Hasselbalch condition gives a connection between the pH of acids (in watery arrangements) and their pKa (corrosive separation steady). The pH of a cushion arrangement can be assessed with the assistance of this situation when the centralization of the corrosive and its form base, or the base and the comparing form corrosive, are known.

The Henderson-Hasselbalch condition is useful while deciding the pH of an answer utilizing pKa and known centralizations of form base, salt, and corrosive. If the pH is known, it can also be used to determine concentrations of conjugate base, salt, or acid.

Incomplete question :

What is the [CH₃CO₂⁻]/[CH₃CO₂H] ratio necessary to make a buffer solution with a pH of 4.34? K a = 1.8 × 10⁻⁵ for CH₃CO₂H.

A. 2.5:1

B. 0.91:1

C. 1.09:1

D. 0.39:1

Learn more about Henderson–Hasselbalch Equation :

brainly.com/question/13423434

#SPJ4

The symbol for this isotope is ^89Y, where the superscript 89 represents the total number of nucleons (protons + neutrons) in the nucleus. The subscript Y stands for yttrium, the element of which this isotope is a part.

Isotope is an element with a different number of neutrons compared to its standard atomic weight. Isotopes are atoms of the same element with different numbers of neutrons. This leads to different atomic weights, but the same number of protons. The most common isotopes are those of hydrogen and carbon. Isotopes can be stable or unstable, with the unstable ones decaying over time. Isotopes have a variety of uses ranging from energy production to medical imaging. Isotopes are also used in radiometric dating to measure the age of fossils and archaeological artifacts. Isotopes are also used in smoke detectors, as well as in food irradiation to make food safer by killing off harmful bacteria. Isotopes can also be used to determine the composition of soils and rocks.

To learn more about isotope

https://brainly.com/question/14220416

#SPJ4

Atoms can be rearranged by breaking and forming chemical bonds in a drop zone empty, leading to the conversion of an element or isotope into a different one. Similarly, in a nuclear reaction, energy changes occur, but the magnitude of these changes is relatively small compared to those in a chemical reaction.


Chemical reactions involve the breaking and forming of chemical bonds between atoms, resulting in the rearrangement of atoms and the conversion of one substance into another. These reactions are driven by the energy changes that occur during the process, which can either release energy (exothermic) or require energy (endothermic). The energy changes in chemical reactions are typically extremely large, and they can be measured using calorimetry.

In contrast, nuclear reactions involve the splitting (fission) or merging (fusion) of atomic nuclei, resulting in the conversion of one element or isotope into another. The energy changes in nuclear reactions are much smaller than those in chemical reactions, but they are still significant and can be measured using specialized techniques.

In summary, atoms can be rearranged by breaking and forming chemical bonds or through nuclear reactions, leading to the conversion of one substance into another. While energy changes occur in both types of reactions, the magnitude of these changes is much smaller in nuclear reactions compared to chemical reactions.

To know more about nuclear reaction, visit:

https://brainly.com/question/16526663

#SPJ11

The two fractions that would be best to pool together for application to a subsequent column would be fractions 4 and 5.

Fractions are a way of writing numbers as a ratio of two numbers. They are written in the form of a/b, where a is the numerator and b is the denominator. The numerator represents the number of parts of a whole, and the denominator represents the total number of parts into which the whole is divided. Fractions can represent parts of a whole number, parts of a set, or parts of a measurement.

The two fractions that would be best to pool together for application to a subsequent column would be fractions 4 and 5. This is because fraction 4 has the highest concentration of the desired protein, and fraction 5 has the second highest concentration. Pooling these two fractions together would maximize the amount of protein present in the pooled fraction and minimize any contaminants that may be present in the other fractions.

To learn more about fractions on:

brainly.com/question/29419078

#SPJ4

The complete question is:

Based upon the quantitative data, what two fractions would be the best to pool together for application to a subsequent column (like an ion exchange or gel filtration column)?

The standard reduction potential of a standard hydrogen electrode is defined as zero volts.

This is because the standard hydrogen electrode is the reference electrode for measuring the reduction potential of other half-cells in electrochemical reactions. The standard hydrogen electrode is composed of a platinum electrode coated with platinum black, immersed in a solution of 1 M H+ ions, and a gas chamber filled with hydrogen gas at a pressure of 1 atm. When the hydrogen gas is bubbled through the solution, it is reduced to H+ ions and electrons, which are then oxidized at the platinum electrode. The potential difference between the standard hydrogen electrode and another electrode is measured using a voltmeter, and this difference is known as the standard reduction potential. Therefore, the standard reduction potential of a standard hydrogen electrode is zero volts by convention, and it is used as a reference point for measuring the reduction potentials of other electrodes in electrochemical reactions.

To know more about standard reduction potential visit:

https://brainly.com/question/23881200

#SPJ11

Answer:

the answer is KOH (d) thanks

Amides can be prepared in one step by reacting a carboxylic acid and an amine, an acid chloride and an amine, or an alcohol and an acid chloride.

Chloride is an anion made up of one chlorine atom and one electron. It is the most abundant halide ion found in nature and is found in many chemical compounds. In the human body, it is present in the blood and other fluids, and is also necessary for the production of hydrochloric acid in the stomach. Chloride is an essential electrolyte and helps to balance the acid-base balance in the body. It also helps to regulate the amount of water in the body and is necessary for proper nerve and muscle function. Chloride is also essential for the elimination of waste products from the body and for keeping the skin and other tissues healthy.

The reaction of an amine and a carboxylic acid will result in the formation of an amide. The reaction of an acid chloride and an amine will also result in an amide. Lastly, an alcohol can be reacted with an acid chloride to form an amide.

Therefore the correct option is C.

To learn more about chloride

https://brainly.com/question/24218286

#SPJ4

Carbon Dioxide had the highest emissions of greenhouse gases in 2014. The correct answer is 4.

Carbon dioxide (CO2) is the most abundant greenhouse gas in the Earth's atmosphere, and its concentration has been steadily increasing since the beginning of the Industrial Revolution. The burning of fossil fuels for energy production, transportation, and industrial processes is the primary source of anthropogenic CO2 emissions. In 2014, global CO2 emissions from fossil fuel combustion and industrial processes were estimated to be around 32.5 billion metric tons, which is the highest level on record. CO2 is a potent greenhouse gas that can trap heat in the Earth's atmosphere and contribute to global warming and climate change. Therefore, 4 is the correct answer.

To know more about Industrial Revolution, here

brainly.com/question/455063

#SPJ1

--The complete Question is, Which greenhouse gas had the HIGHEST emissions in 2014?

1. Fluorinated Gases.

2. Nitrous Oxides

3.Methane

4.Carbon Dioxide--

As a result, the acidic strength of H₂ S is lower than that of H₂Te due to the difficulty of hydrogen ion removal in H₂ S.

Van der Waals forces, which attract neutral molecules to one another in gases, liquefied and solidified gases, and almost all organic liquids and solids, are relatively weak electric forces.

In addition to other intermolecular forces, van der Waals forces include the forces of attraction and repulsion between atoms, molecules, and surfaces. In contrast to covalent and ionic bonding, they are triggered by correlations in the varying polarizations of nearby particles (a result of quantum dynamics), which makes them unique.

Learn more about Van der Waals :

brainly.com/question/11457190

#SPJ4

The pH of the solution after the addition of 75.0 mL of LiOH is calculated as  12.1 .

Option E is correct.

The pH of an answer is a proportion of hydrogen particle focus, which thusly is a proportion of its causticity. Unadulterated water separates somewhat into equivalent groupings of hydrogen and hydroxyl (OH−) particles

100 ml of 0.180 M HClO₄ = [tex]\frac{0.180mol}{1 L}[/tex] × 0.1 L

                                       = 0.018 mol

75 ml of 0.270 M LiOH = [tex]\frac{0.270 mol}{1 L}[/tex] × 0.075 L

                                      = 0.02025 mol

      HClO₄ + LiOH      ⇒   LiClO₄ + H₂O

      0.018      0.0202       0            0

     - 0.018      -0.018        + 0.018

                        pOH = - log [ OH ⁻]

                         = - log ( 0.0126)

                             = 1.90

       [OH⁻]   = 0.0022/ 0.175 M

                   = 0.0126 M

                              pH =  14 - pOH

                               =  14 - 1.90

                                   = 12.1

a measure of a substance or solution's acidity or basicity. The pH scale ranges from 0 to 14. A pH of 7 is neutral on this scale, meaning that it is neither acidic nor basic. A pH worth of under 7 methods it is more acidic, and a pH worth of in excess of 7 methods it is more essential.

The chemical conditions of a solution are reflected in the pH, an important quantity. Chemical behavior, microbial activity, the availability of nutrients, and biological functions are all influenced by pH.

Learn more about pH level:

brainly.com/question/172153

#SPJ4