Transcribed image text: In order to combat the cold here on campus, you may have seen OSU facilities use a brine solution to de-ice the roads and sidewalks. Brine, a concentrated salt solution, better prevents and eliminates ice from the roads, but can be more costly to store and disburse along the roadways. Why is brine a more effective de-ice solution than solid ice melt products? Select all that apply. Brine is NOT more effective than traditional ice melt products. Since brine is already a solution, the Van't Hoff Factor is higher than solid salt, making the freezing point depression greater. Brine is a higher concentration than solid salts, making the freezing point depression greater. Freezing point depression requires a solution to occur. Brine starts as a solution, where solid salt must form a solution first. The brine solution can more evenly coat the surface of the road, making the ice prevention more widespread.

In chemistry, the term "major product" refers to the product of a chemical reaction that is formed in the highest yield

Meaning that it is produced in the greatest amount compared to other products that may also be formed in the reaction. The major product is often determined by considering the thermodynamics of the reaction, as well as the reaction kinetics and any other factors that may influence the distribution of products. The identity of the major product can be predicted based on the reaction conditions and the reactants involved, and is an important factor to consider in the design of chemical syntheses and the optimization of reaction conditions.

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among the three gases listed, NO2 would have the fastest-moving molecules on average at a given temperature.

According to the kinetic theory of gases, the average kinetic energy of gas molecules is proportional to their absolute temperature. At a given temperature, gases with lighter molecules will have higher average speeds compared to gases with heavier molecules. This is because the lighter molecules have less mass and therefore can move more quickly for a given amount of kinetic energy. Therefore, among the three gases listed, NO2 would have the fastest-moving molecules on average at a given temperature. This is because NO2 has the lowest molecular weight (46 g/mol) compared to HBr (81 g/mol) and C2H6 (30 g/mol). The faster movement of NO2 molecules is reflected in their higher root-mean-square speed, which is a measure of the average speed of gas molecules in a sample. However, it is important to note that the average speed of gas molecules can vary depending on factors such as temperature, pressure, and the specific conditions of the gas sample.

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You are experimenting with blood samples and you place a drop of rbcs into a solution of 300 millimoles of CaCl2, there is no efect on RBCs.

The reason why the cell would shrink further in CaCl2 result is because it has a advanced van't Hoff factor i.e. total number of separated ionic species per solute patch( it is 2 for NaCl whereas it's 3 for CaCl2).

Nonionic solutes don't disconnect and will thus have a van't Hoff factor of 1)

Bibulous pressure( and other colligative parcels) are commensurable to van't Hoff factor. thus bibulous pressure in CaCl2 result will be3/2 times of that in an equimolar NaCl result.

Note that the ionic chemical eventuality isn't what drives osmosis; it's the discriminational attention of water( or any other detergent) that drives it.

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BeO or KCl will have a higher melting point than any other pair given above in the question.

The pair of molecules that would have the higher melting point would be e. BeO and KCl. BeO has a higher molecular weight and is more covalently bonded, which makes it more stable and more difficult to break the intermolecular forces. This makes it have a higher melting point than KCl, which is held together by ionic bonds, which are relatively weaker and easier to break.

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[tex]\begin{equation}\mathrm{n}=3, \rho=1, \mathrm{m_e}=-1,0, \mathrm{~m}_{\mathrm{s}}=+1 / 2 \text { or }-1 / 2\end{equation}[/tex] is a correct set of quantum numbers for an electron in the 3p orbital, with a whole number no decimals n.

The quantum state of an electron in an atom or molecule is determined by four separate elements known as quantum numbers. With the use of these numbers, it is possible to forecast the energy, location, and orientation of the electrons within an atom. The orbital's size is defined by the electron's principal quantum number, n, which also serves as an energy level indicator. The azimuthal quantum number, l, describes the geometry of the orbital, while the magnetic quantum number, ml, determines its direction in space. An electron's spin is defined by its spin quantum number, or ms. These illustrations are crucial for understanding atomic and molecular properties since they collectively give a full explanation of the electron.

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The actual question is:

Fill in the blanks,

__________________ is a correct set of quantum numbers for an electron in the 3p orbital, with a whole number no decimals n

A) [tex]\begin{equation}\mathrm{n}=3, \rho=1, \mathrm{m_e}=-1,0, \mathrm{~m}_{\mathrm{s}}=+1 / 2 \text { or }-1 / 2\end{equation}[/tex]

B) [tex]\begin{equation}\mathrm{n}=3, \rho=2, \mathrm{m_e}=-2,0, \mathrm{~m}_{\mathrm{s}}=+1 / 2 \text { or }-1 / 2\end{equation}[/tex]

C) [tex]\begin{equation}\mathrm{n}=2, \rho=2, \mathrm{m_e}=-1,0, \mathrm{~m}_{\mathrm{s}}=+1 / 2 \text { or }-1 / 2\end{equation}[/tex]

D) [tex]\begin{equation}\mathrm{n}=2, \rho=3, \mathrm{m_e}=-1,0, \mathrm{~m}_{\mathrm{s}}=+1 / 2 \text { or }-1 / 2\end{equation}[/tex]

Benedict solution is aqua- blue in color. But as it is heated with high amount of reducing sugar its color changes to red.

Benedict solution is a complex mixture of pentahydrate of copper sulphate, sodium citrate and sodium carbonate. Carbohydrates, reducing sugars have reducing property. So when benedict solution is heated with reducing sugar the copper(II) ions is reduced to Cu(I) ions. From copper sulphate cupric oxide is formed, which is red in color.

If traces of reducing sugar is present, the color will turn to green. For moderate amounts the color will be yellow to orange. When high amount of reducing sugar is present more cupric oxide is formed and solution become red in color.

So in presence of high amount of reducing sugar, benedicts solution makes brick red precipitate.

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The stoicheometric ratio between the magnesium reactant and the hydrogen product is 1:1. This means that for every mole of magnesium that reacts, one mole of hydrogen gas is produced.

The reaction used to determine the molar volume of a gas is typically the reaction between magnesium (Mg) and hydrochloric acid (HCl) , which produces magnesium chloride and hydrogen gas.

The balanced chemical reaction is:-

[tex]Mg + 2HCl ---- > MgCl_{2} + H_{2}[/tex]

The molar volume of a gas is defined as the volume occupied by one mole of the gas at a specific temperature and pressure.

To determine the molar volume of the gas we need to measure the volume of the gas under known temperature and pressure conditions.

The formula to calculate the molar volume of the gas is:-

[tex]V_{m} = v/n[/tex] ( where, v is the volume of the gas and n is the number of moles of the gas).

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Hot Water freeze when thrown in the air immediately at the temperature of -42 degrees.

In an extremely cold setting, hot water sprayed into the air rapidly freezes before it touches the ground.

The question in the headline of this essay might seem fit for a science exam in primary school, but the solution is far more nuanced than it first seems. Water freezes at 32 degrees Fahrenheit, 0 degrees Celsius, and 273.15 Kelvin, as we have all been taught. Yet it isn't always the case. Scientists have discovered liquid water at -40 degrees Fahrenheit in clouds and have even cooled water in the laboratory to -42 degrees Fahrenheit.

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volcanic eruption is the catastrophic event that impacts the human settlement as compared to the other options.

Catastrophic events are sudden, natural or man-made, situations where change & destruction occur. All catastrophic events are the Earth's way of maintaining equilibrium during change.

Natural disasters are catastrophic events with atmospheric, geological, and hydrological origins (e.g., droughts, earthquakes, floods, hurricanes, landslides) that can cause fatalities, property damage and social environmental disruption.

Natural disasters like soil depletion also take a period of time. Dwindling water supply is also itself an alarm before scarcity of water begins.

so we can conclude that option a is the correct option among the given options.

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This means that the balance equation for the reaction of NH₄Cl (ammonium chloride) producing NH3 (ammonia) and HCl (hydrochloric acid) is: NH₄Cl (s) → NH₃ (g) + HCl (g).

A balanced chemical equation is a representation of a chemical reaction that shows the same number of atoms of each element on both the reactant and product sides of the equation. To balance a chemical equation, the following steps can be followed:

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The balanced equation for the reaction is:

NH₄Cl(s) -> NH₃(g) + HCl(g)

The law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.

We can balance chemical equation by obeying the above law.

Now, we shall write the balance equation.

Ammonium chloride -> Ammonia + Hydrogen chloride

NH₄Cl(s) -> NH₃(g) + HCl(g)

Reactant:

Product:

We can see that the atoms of the elements on both sides of the equation are equal, then the equation is balanced

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The concentration of the compound at 50.9°C is 0.098 g/mL.

Concentration is the act of focusing one's attention on a specific task or activity. It is the ability to focus on one thing at a time, while blocking out distractions. It is a skill that can be developed over time and with practice. Concentration is important in many areas of life, including studying, work, and sports. It is also a key factor in achieving success in any endeavor.

At 50.9°C, the mass of the boat + solution was 0.934 g and the mass of the boat + dry was 0.836 g.
The difference between the two masses is 0.098 g.
This difference is equal to the mass of the solute (in this case, the compound) that was added to the boat. Thus, the concentration of the compound at 50.9°C is 0.098 g/mL.

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Due to its symmetrical structure and the two cyclopentadienyl rings that surround the core iron atom, ferrocene is the least polar of the three compounds. Contrarily, the polar carbonyl groups in monoacetylferrocene and diacetylferrocene increase their overall polarity.

The division of the electric charge within a molecule is referred to as polarity, which is a key concept in chemistry. A molecule's polarity, which in turn impacts its physical and chemical properties, is determined by how many electrons are distributed around the atoms in the molecule. Depending on the electronegativity differences between the atoms and the molecular geometry, a molecule can be categorised as polar or nonpolar. Polar molecules have a partial charge or a positive and negative end due to an unequal distribution of electrons. Because of this, polar molecules interact with other molecules in a distinct way, giving them special characteristics including solubility, boiling point, and reactivity. In many areas of chemistry, such as organic chemistry, biochemistry, and material science, understanding polarity is crucial.

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The results will be biased toward less photosynthesis if there is less carbon dioxide influx in one compartment than in the other chamber. The correct answer is C.

When the airflow in one chamber is less than the other chamber, less CO2 enters the chamber, resulting in a lower CO2 emission level from that chamber.

This may distort the data collected from this camera and lead to inaccurate measurements and conclusions. It is important to ensure that all chambers receive the same amount of air for accurate readings.

To avoid these errors it is important to ensure that all chambers are supplied with the same amount of air. This can be achieved by using the same flow rate for all chambers or by using a flow meter to measure and control the air flow entering each chamber. Consistent and controlled conditions allow researchers to obtain the accurate and reliable data needed to inform scientific conclusions.

The amount of CO2 entering one chamber is reduced when that chamber receives less outside air than the other chamber, resulting in a lower carbon dioxide emission level from that chamber. This can distort the data from that camera and lead to questionable observations and conclusions. It is important to ensure that the air entering each chamber is uniform in order to obtain accurate measurements. To avoid this mistake, it is important to ensure that the airflow to each chamber is uniform. This can be done in one of two ways: maintaining a constant flow rate within each chamber or using a flow meter to control and manage the airflow.

Complete Question:

Recall that your chambers had a set amount of CO 2 entering each chamber and then you measured how much CO 2 was exiting the chamber. Suppose you conducted your experiment and discovered one of your chambers had a lower in-flow of air relative to the other chambers. What would this do to your data in that chamber?

a. It would not change the results.

b. It would bias the results toward more respiration.

c. It would bias the results toward less photosynthesis.

d. It would bias the results toward more photosynthesis.

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The calculated molecular weight of butane would not be affected if some of the bubbles escaped into the air instead of entering the cylinder.

The molecular weight of a substance is a fundamental property of the substance and is determined by the number and type of atoms in its molecular structure. It is independent of the amount or physical state of the substance. Thus, if some of the bubbles of butane escape into the air, the molecular weight of the remaining butane in the cylinder remains unchanged. The effect of this escape would only be seen in the measured volume or mass of the butane in the cylinder, which would be lower than the expected value if all the butane had been captured.

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A substance that is only made up of carbon and hydrogen has a mass composition of 85.7% c and 14.3% h. The compound's empirical formula is CH₂.

An empirical formula is a chemical formula for a compound that only specifies the proportions of the components present rather than the exact number of atoms.

The empirical formula for molecules is the most straightforward iteration of the molecular formula. To find this, divide each subscript in the formula by its lowest common denominator.

Atomic mass number % is the easiest formula to use to calculate an element's percentage in relation to the number of atoms.

With a density of 85.7 and an atomic mass of 12, carbon has a mass number of 7.141.

Hydrogen has a mass of 14.3 and

an atomic mass of 1 = 14.3 / 1 = 14.3²

As a result, the compound's empirical formula is C₁H₂= CH₂.

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The mole fraction of methanol is 0.100 in a 78.0-g 78.0-g aqueous solution of methanol, ch4o, ch 4 o. Is  the mass of methanol in the solution is 7.809 g and the mass of water is 39.425 g.

The mole fraction of methanol (CH4O) in the solution is 0.100, which means that 10% of the moles of the solution are methanol. We can use this information, along with the total mass of the solution, to determine the mass of each component.

The total moles of the solution can be calculated by dividing the total mass of the solution by its molar mass. Methanol has a molar mass of 32.04 g/mol, so we have:

total moles of solution = 78.0 g / 32.04 g/mol = 2.434 mol

Now we can calculate the moles of methanol:

moles of methanol = 0.100 x 2.434 mol = 0.2434 mol

The remaining moles are water:

moles of water = 2.434 mol - 0.2434 mol = 2.1906 mol

To calculate the mass of each component, we can use their respective molar masses:

mass of methanol = 0.2434 mol x 32.04 g/mol = 7.809 g

mass of water = 2.1906 mol x 18.02 g/mol = 39.425 g

Therefore, the mass of methanol in the solution is 7.809 g and the mass of water is 39.425 g.

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Dendrites is a part of the neuron receives input in the form of chemical stimuli.

Chemical stimuli, such as neurotransmitters, are received by the dendrites of a neuron. Dendrites are the branched extensions of a neuron that receive signals from other neurons or from sensory receptors. When a neurotransmitter molecule binds to a receptor on the dendrite, it can trigger an electrical signal (action potential) that travels down the length of the neuron and can cause the release of neurotransmitters from the axon terminal, which in turn can stimulate the dendrites of other neurons. Thus, dendrites play a critical role in integrating the signals received by a neuron and transmitting them to the cell body (soma) and ultimately to the axon, where they can be propagated to other neurons.

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Most likely true for an atom with five valence electrons is  it will lose three electrons.

This is because atoms that have five valence electrons are considered to be in group 5A of the periodic table. Group 5A elements tend to lose three electrons in order to achieve a noble gas electron configuration. This is because the noble gas configurations have the maximum number of electrons in their outer shells, making them very stable. The equation for this reaction would be 5e- → 2e- + 3e-.An electron that is not connected to or bonded to an atomic nucleus is referred to as a vacant electron. It can be utilised to conduct electricity and is free to move through the material. Materials with vacancy electrons include semiconductors, insulators, and metals.

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The percent yield is 99%

The theoretical yield of a chemical reaction is the maximum amount of product that can be produced from the given amounts of reactants, assuming complete conversion of all reactants to products and no loss of product during the reaction.

Number of moles of HCl = 73g/36.5 g/mol

= 2 moles

Number of moles of the Mg = 48 g/24 g/mol = 2 moles

If from the reaction;

1 mole of Mg reacts with 2 moles of HCl

2 moles of Hcl will react with 2 * 2/1

= 4 moles

Thus the HCl is the limiting reactant

We have that;

2 moles of HCl produces 1 mole MgCl2

Mass of the MgCl2 = 95 gPercent yield is;

73 g/120 g * 100/1

= 99%

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The volumetric flask is used in titration, a process used to determine the unknown concentration of a known solution

The volumetric flask is a glassware piece of laboratory equipment that is used to make precise volume measurements of a liquid. It is also known as a 'measuring flask', and consists of a tapered conical body with a long neck and a flat bottom. The bottom of the flask is usually marked with a calibration mark, which can be used to determine the exact volume of the liquid inside.  The volumetric flask is used in titration, a process used to determine the unknown concentration of a known solution. A burette, filled with the known solution, is used to slowly add the solution to the volumetric flask, containing the unknown solution. As the burette is slowly releasing the solution, a color change will take place as the concentration of the unknown solution is reached. A full reading of the volume in the volumetric flask is then taken, which can be used to calculate the concentration of the unknown solution.

The volumetric flask is also used in general laboratory tasks such as diluting solutions and transferring liquids. The accuracy of the volumetric flask is based on its calibration mark and the accuracy of the liquid inside. It is important to properly clean and store the volumetric flask to ensure accuracy in future measurements.

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Taking into account the reaction stoichiometry, 16.345 moles of O₂ are required if 4.67 mol of ethane undergo combustion.

The balanced reaction is:

2 C₂H₆ + 7 O₂  → 4 CO₂ + 6 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The following rule of three can be applied: If by reaction stoichiometry 2 moles of C₂H₆ react with 7 moles of O₂, 4.67 moles of C₂H₆ react with how many moles of O₂?

moles of O₂= (4.67 moles of C₂H₆× 7 moles of O₂) ÷2 moles of C₂H₆

moles of O₂= 16.345 moles

Finally, 16.345 moles of O₂ are required.

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The volume of the gas at 20.0 °C when the pressure of the gas is 30.0 atm is 9.5 liters

We'll begin by listing out the various parameters given from the question. This is given below:

The final volume of the gas at 20.0 °C can be obtained by using the combined gas equation as shown below:

P₁V₁ / T₁ = P₂V₂ / T₂

(0.9211 × 500) / 473 = (30 × V₂) / 293

Cross multiply

473 × 30 × V₂ = 0.9211 × 500 × 293

Divide both side by 473 × 30

V₂ = (0.9211 × 500 × 293) / (473 × 30)

V₂ = 9.5 liters

Thus, it is evident from the above calculation that the volume of the gas is 9.5 liters

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When an electron moves in the direction of electric field its kinetic energy will decreases and potential energy will increase.

When the electron moves along the direction of E, due to the repulsive force, it undergoes deceleration. thus, the kinetic energy diminishments. As external work is done in moving the electron in this direction, its implicit energy will increase.

The implicit energy of the charge in the electric field is given by

U=qφ where q is the charge and φ is the electric implicit corresponding to the electric field.

The electric field is defined mathematically as a vector field that can be associated with each point in space, the force per unit charge wielded on a positive test charge at rest at that point.

The electric field is generated by the electric charge or by time- varying glamorous fields. In the case of infinitesimal scale, the electric field is responsible for the seductive forces between the infinitesimal nexus and electrons which hold them together.

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Phosphorous halides and alcohol react to form alkyl halides, as well as the byproducts phosphoryl chloride (POCl3) and HCl.

The best methods for converting alcohols into alkyl halides are phosphorous halides and thionyl chloride.

As a chlorinating agent, it is employed. It serves as an intermediary in the production of phosphoric acid derivatives, chloro-anhydrides, and phosphorus acid. It serves as an intermediary in the production of organophosphorus insecticides, water purification systems, lubricant additives, and other products.

A fuming, oily liquid with a pungent stench, phosphorus oxychloride can range in hue from white to pale yellow. In addition to being employed as a chlorinating agent, it is also used in the production of semiconductors, plasticizers, hydraulic fluids, and pesticide-like organophosphorus compounds.

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Note: The correct question would be as bellow,

What are the products of following reaction?

[tex]CH_3CH_2 -OH+PC1_5- >[/tex]

A workplace label typically contains information about the product name, manufacturer, safety instructions, and hazard warnings. It may also include instructions for proper use, storage, and disposal of the product.

 The manufacturer is the company or individual responsible for producing a product. They are responsible for the design, production, and distribution of the item. The manufacturer typically owns the production line, labor, and materials used to create the product. This includes the factory, the machinery, and the raw materials used to make the product. The manufacturer is also responsible for creating a brand identity, and for marketing and promoting the product. This includes advertising, creating a website and social media presence, and engaging in public relations activities.

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65% of the reactant will be consumed in 23.3 seconds. If a first-order reaction has a rate constant of 0.0450 s'.

First order rate law is given by,

A = A0 × e-kt

Given,

A0 = Initial concentration=100 M

A = Final concentration=35 M (65% is consumed means 35% is the remaining compound)

K = Rate constant = 0.0450 s-1​​​​​​

A = A0×e-kt​​​​​​

=>35 = 100 × e-0.0450 * t

=>e-0.0450*t = 0.35

=> - 0.0450*t = ln(0.35)

=> -0.0450*t = -1.05

=> t = 23.3 sec

So, 23.3 seconds will be required to consume 65% of the reactant.

When a reaction's pace and reactant concentration are inversely correlated, the process is known as a first-order reaction. To put it another way, the response rate doubles when the concentration double. One or two reactants can be present in a first-order reaction, as in the case of the decomposition process.

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The molarity of CuSO₄ affect this reaction as the Molarity of the solution increasing would decrease the mass able to be recovered.

Molarity of a given result is defined as the total number of intelligencers of solute per litre of result. The molality of a result is dependent on the changes in physical parcels of the system similar as pressure and temperature as unlike mass, the volume of the system changes with the change in physical conditions of the system.

Molarity is represented by M, which is nominated as molar. One molar is the molarity of a result where one gram of solute is dissolved in a litre of result. As we know, in a result, the detergent and solute mixture to form a result, hence, the total volume of the result is taken.

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Complete question:

How would increasing the molarity of CuSO4 affect this reaction? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer.

a The Molarity of the solution would have no effect on the reaction

b The Molarity of the solution increasing would decrease the mass able to be recovered

с The molarity of the solution determines the mass of copper available for reaction and so the possible mass of copper that could accumulate on the zinc pellets would increase.

d Not enough information is given to determine the effect of increasing the concentration of the CuSO4

Answer:

Wjat is your question

Explanation:

When temperature of a reaction mixture rises as the energy is released during an exothermic process. Inside an endothermic reaction, its temperature drops as energy is absorbed.

Enthesogenic responses Heat is taken in. 1) Photosynthesis: In order to transform carbon water and carbon dioxide and oxygen, plants must absorb heat sunlight energy. 2) Heating an egg: The egg is cooked by absorbing heat energy from the pan.

Endothermic relates to any chemical reaction that absorbs heat from the environment. This energy that has been absorbed provides the activation energy for the process. This type of reaction is distinguished by its frigid feeling.

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