the strongest intermolecular interactions between ethyl alcohol (ch3ch2oh) molecules arise from a. dipole-dipole forces. b. london dispersion forces. c. hydrogen bonding. d. ion-dipole interactions. e. carbon-oxygen bonds.
Answers
Intermolecular forces such as dipole-dipole forces, London dispersion forces exist between molecules and these depend on strength of electronegativity of molecule. Thus, the correct option is option C.
What is intermolecular forces of attraction?Intermolecular forces of attraction is force of attraction that make two molecule come closer. Intermolecular forces of attraction is directly proportional to the electronegativity of the molecule.
Size of electronegative molecule is small so, if any other molecule or molecule come into contact with this molecule then this molecule attract the electron of other molecule very efficiently and therefore the force between the molecule increases. Ethyl alcohol CH₃CH₂OH are held together by strong hydrogen bonding.
Thus, the correct option is option C.
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Related Questions
Why is it better to mix drops of solutions in a reaction plate rather than to mix milliliters of a solution in a flask?
Answers
Explanation: Hey Sonia, I see I'm not the only one at school struggling in Chem. My best guess is to minimize the likelyhood and size-amount of a chemical reaction.
Why is the bombardier beetle relevant in the evolution vs. creationism discussion? what do you think the bombardier beetle shows us in this debate?
Answers
Bombardier beetle is relevant in evolution vs. creationism as creationists use bombardier beetle to challenge evolution whereas scientists say species may have evolved the ability to survive toads’ digestive system.
A subgroup of ground beetles known as bombardier beetles includes several hundred distinct species. To defend themselves from predators, these insects have tools.
When agitated, the beetle uses unique glands in its abdomen to spray a boiling chemical solution onto the face of its predator. Hydroquinone and hydrogen peroxide are combined to create the solution, which they then mix and let loose on their foes.
Even the bombardier beetle could suffer devastating effects from any change to these two substances.
Therefore, evolution is not supposed to occur in a sound manner because it could have disastrous effects and lead to modification instead of modification.
So, while it may be appropriate in a very small number of circumstances, evolution is not appropriate in general.
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Qualitative analysis is a method used to identify chemical compounds in a mixture based on their reactivity. What types of reactions would provide a useful method of identifying an unknown aqueous salt?
Answers
Precipitation Reactions, Acid-Base Reactions, Redox Reactions, and Complexation Reactions provide a useful method of identifying an unknown aqueous salt.
When it comes to identifying an unknown aqueous salt, several types of reactions can be useful in the qualitative analysis process.
Precipitation Reactions: Adding specific reagents to an aqueous solution of the unknown salt can trigger the formation of insoluble precipitates. The characteristics of the precipitate, such as color, texture, and solubility, can provide valuable information about the identity of the salt. Acid-Base Reactions: Reacting the unknown salt with acids or bases can help identify the nature of its anions or cations. For instance, the addition of hydrochloric acid (HCl) to the unknown salt solution can lead to the liberation of carbon dioxide gas, indicating the presence of carbonate ions (CO32-).Redox Reactions: Redox reactions involve the transfer of electrons between reactants. By subjecting the unknown salt to suitable oxidizing or reducing agents, the behavior of the ions present in the salt can be observed. For example, the reaction of the unknown salt with potassium permanganate (KMnO4) can result in a color change, indicating the presence of reducing agents such as sulfite ions (SO32-).Complexation Reactions: Some metal ions can form complex compounds with specific ligands. By introducing ligands like ammonia (NH3) or sodium hydroxide (NaOH) to the unknown salt solution, the formation of colored complexes can help identify the metal ion present.know more about Acid-Base Reactions here:
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Another question. What is an example of a chemical change?
Answers
Answer:
Yellowing of leaves
Explanation:
Involves the colour change in leaves whereby less amount of chlorophyll is produced
Answer:
burning, cooking, milk becoming curd, rusting of iron
Describe how matter moves throughout the owl’s food web.
Answers
Your food web should include drawings and labels of the organisms as well as arrows to show how energy (food) moves through the web
What moves throughout the owl’s food web?In the food web in a feed food chain, energy and nutrients go from plants to the fruitarian consuming them, and to the carnivores or omnivores hunt upon the herbivores. owls often eat other carnivores, such as weasels, bats, and astute, and insect-eating birds. Therefore, owls hold a spot at the top of the food chain. Using the food web and simple determining, they track the flow of energy and biomass through the food web, and impose the concept of matter and energy ... food web uses the real-life diet of an owl. Many times in science classes you may vivisect an owl's amount of available energy decrease as it passes through the ecosystem.
So we can conclude that the food web consists of all the food chains in one ecosystem. Each living thing in an ecosystem is part of a different food chain.
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how many helium atoms are in a mole of helium?
Answers
Answer:1 mole of helium gas contains 6.02 x1023 helium atoms
Explanation:I hope this helps
Look closely at the valence electrons in all eight columns of your table from part C. Which element's location does not
match the pattern shown in the table?
o helium (He)
o hydrogen (H)
sodium (Na)
O argon (Ar)
Answers
Answer: helium(He)
Explanation: Helium has only 2 electrons in the outermost energy level, but all of the other elements in its column have eight.
A chemical reactor has three variables, temperature. pH and dissolved oxygen. to be controlled. The pH neutralization process in the reactor can be linearized and then represented by second order dynamics with a long dead time. The two time constants of the second order dynamics are T1 = 2 min and T2 = 3 min respectively. The steady state gain is 4 and the dead time is 8 min. The loop is to be controlled to achieve a desired dynamics of first order with time constant Ta = 2 min, the same time delay of the plant and without steady-state offset. a) Determine the system transfer function and desired closed-loop transfer function Hence, explain that a nominal feedback control may not achieve the design requirement. [7 marks] b) It is decided to control the plant using the Smith predictor control strategy, draw a block diagram of a general Smith predictor control system including both the set point and disturbance inputs. Then, explain why the effect of time delay on system stability can be cancelled. [8 marks] c) Design the controller using the Direct Synthesis Method and realise it with the PID form. [10 marks]
Answers
a) Transfer function:The pH neutralization process can be represented as a second-order system. The system transfer function can be obtained from the process reaction as shown below, 1/(τ1s+1)(τ2s+1).
Hence, the transfer function is given as: G(s) = 4/(2s+1)(3s+1)The desired closed-loop transfer function:Let’s assume that C(s) is the controller’s transfer function that takes the error and produces the control signal. And, G(s) is the process transfer function. The closed-loop transfer function is given by:T(s) = C(s)G(s)/[1+C(s)G(s)]The desired transfer function must be in a first-order system.
Now, substituting these values in T(s), we get the following equation: 1/(Tas+1) = Kp(1+Tis)4(Tas+1)(2s+1)(3s+1)Hence, we get the following values:Kp = 3.014Ti = 4.96sNominal feedback control may not achieve the design requirementThe nominal feedback control may not achieve the design requirement because the closed-loop transfer function cannot be made first-order with a time constant of 2 min.
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Describe a gentle force?
Answers
Answer:
The word gentle traces back to the Latin word gentlis, meaning “of the same clan,” and at first the world was used to describe people belonging to distinguished families, who were seen as courteous and noble. Nowadays you’re more likely to hear the word used to refer to things that are calm, moderate, and without harshness. The word is often applied to people, but it can be used more broadly to describe anything that is mild, such as "a gentle detergent" or "a gentle reminder."
What is the mass percent (m/m) of glucose in a solution that contains 30.0 g of water and 5.8 g of glucose?
A) 16.2%
B) 19.3%
C) 14.4%
D) 5.8%
Answers
The mass percent (m/m) of glucose in a solution that contains 30.0 g of water and 5.8 g of glucose is 16.2%.
Thus, the correct option is A.
Mass percent is a term used to describe the concentration of a solution. It is defined as the mass of the solute in grams divided by the total mass of the solution in grams, multiplied by 100 percent.
To find the mass percent of glucose in the given solution, we need to calculate the total mass of the solution. The total mass of the solution is given by the sum of the mass of glucose and water:
30.0 g (water) + 5.8 g (glucose) = 35.8 g (total mass of solution)
The mass percent of glucose in the solution is then calculated as follows:
Mass percent (m/m) = (mass of glucose ÷ total mass of solution) × 100 percent
= (5.8 ÷ 35.8) × 100 percent= 16.2 percent
Therefore, the mass percent (m/m) of glucose in the solution is 16.2%.
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what is local unit?
.
Answers
Answer:
Explanation:
Local unit means a county, city, village, or township.
Each sentence describes potential and kinetic energy at various locations on a slide. Complete each statement by selecting the position of the object on the slide
Answers
The question is incomplete, the complete question is;
Each sentence describes potential and kinetic energy at various locations on a slide. Complete each statement by selecting the position of the object on the slide.
An object at position has all kinetic energy. A B or C
An object at position has all potential energy. A B or C
An object at position has about half potential energy and half kinetic energy. A B or C
Answer:
An object at position C has all kinetic energy.
An object at position A has all potential energy.
An object at position B has about half potential energy and half kinetic energy.
Explanation:
Lets take a good look at the image.
At position A, the object is stationary and we know that the energy possessed by an an object by virtue of its position is known as potential energy. Hence at A, the energy possessed by the body is all potential.
At position B, the total mechanical energy of the object becomes potential energy + kinetic energy as the object is now in motion.
At position C, the object is still in motion and the energy is all kinetic.
Answer:
C
A
B
Explanation:
How many moles of carbon dioxide, CO2, can be formed by the decomposition of 10 moles of aluminum carbonate, Al2(CO3)?
Answers
Answer:
30 moles of CO₂
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
Al₂(CO₃)₃ —> Al₂O₃ + 3CO₂
From the balanced equation above,
1 mole of Al₂(CO₃)₃ decomposed to produce 3 moles of CO₂.
Finally, we shall determine the number of mole of CO₂ produced from the decomposition of 10 moles of Al₂(CO₃)₃. This can be obtained as follow:
From the balanced equation above,
1 mole of Al₂(CO₃)₃ decomposed to produce 3 moles of CO₂.
Therefore, 10 moles of Al₂(CO₃)₃ will decompose to produce = 3 × 10 = 30 moles of CO₂.
Thus, 30 moles of CO₂ were obtained from the reaction.
30 moles of CO₂ will be produced by the decomposition of 10 moles of \(\rm Al_2(CO_3)_3\).
What is carbon dioxide?Carbon dioxide is a gas made up of two elements, carbon, and oxygen.
It is the gas that is used by plants to make their food.
The % of this gas on Earth is 0.03%
The balanced equation is
\(\rm Al_2(CO_3)_3 \longrightarrow Al_2O_3 + 3CO_2\)
1 mole of \(\rm Al_2(CO_3)_3\) decomposes to produce 3 moles of CO₂.
If 1 mole of \(\rm Al_2(CO_3)_3\) produce 3 moles of CO₂, then decomposition of 10 moles of \(\rm Al_2(CO_3)_3\) will produce
3 × 10 = 30 moles of CO₂.
Thus, 30 moles of CO₂ will be produced by the decomposition of 10 moles of \(\rm Al_2(CO_3)_3\).
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vitamin d is formed in the skin and hydroxylated in two places before it is in its active form of 1,25-dihydroxy vitamin d. where does the second hydroxylation occur?
Answers
The second hydroxylation of vitamin D occurs primarily in the kidneys.
Vitamin D undergoes a two-step hydroxylation process to become its active form, 1,25-dihydroxy vitamin D (calcitriol). The first hydroxylation occurs in the liver, where vitamin D is converted to 25-hydroxy vitamin D (calcidiol). This is the major circulating form of vitamin D in the bloodstream.
After the initial hydroxylation in the liver, the second hydroxylation takes place primarily in the kidneys. Here, the enzyme 1-alpha-hydroxylase acts on 25-hydroxy vitamin D, converting it into the biologically active form, 1,25-dihydroxy vitamin D (calcitriol). This active form of vitamin D plays a crucial role in regulating calcium and phosphate metabolism, bone health, and overall immune function.
It is worth noting that certain other tissues and organs, such as the skin, intestines, and immune cells, also possess the capability to carry out the second hydroxylation to a lesser extent. However, the kidneys are the primary site for this conversion, contributing to the majority of the circulating active vitamin D in the body.
Overall, the second hydroxylation of vitamin D primarily occurs in the kidneys, where 25-hydroxy vitamin D is converted to 1,25-dihydroxy vitamin D, the biologically active form of vitamin D.
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MARKING BRAINLIEST!!!
image is attached
Answers
Answer:
2, s
Explanation:
The there will be two orbitals in the s subshell because the first orbital can only contain two electrons and there will be need of a second one
What state of matter is steam?
A. Gas
B. Liquid
C. Solid
D.Transitive
Answers
Answer:
Steam is an invisible gas
Explanation:
so A. Gas
Answer:
gas
Explanation:
Which energy change takes place when gasoline evaporates from a fuel gas can? a. Energy is released. b. Energy is absorbed.
c. Energy remains stationary. d. Energy becomes transformed.
Answers
When gasoline evaporates from a fuel gas can energy is released. Therefore, the correct option is option A.
Energy, which is observable in the execution of labour as well as through the emission of heat and light, is the quantitative quality which gets transmitted to a body as well as to a physical system in physics. Energy is a preserved resource; according to the rule of conservation of energy, energy can only be transformed from one form to another and cannot be created or destroyed. When gasoline evaporates from a fuel gas can energy is released.
Therefore, the correct option is option A.
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Which of the following is the correct word equation for the reaction described below? calcium hydroxide and hydrogen gas are produced by the reaction of calcium hydride and water. calcium hydride hydrogen → calcium hydroxide water calcium hydride water → calcium hydroxide hydrogen calcium hydroxide hydrogen → calcium hydride water calcium hydroxide water → calcium hydride hydrogen
Answers
The correct word equation for the reaction described is: calcium hydride + water → calcium hydroxide + hydrogen gas. Therefore, the correct chemical equation for this reaction is: CaH2 + 2H2O → Ca(OH)2 + 2H2
Calcium hydride is an inorganic compound with the chemical formula CaH2. It is a white to gray solid, often sold in a powder form, and is highly reactive with water. When calcium hydride reacts with water, it produces hydrogen gas and calcium hydroxide. Calcium hydride is commonly used as a drying agent in organic solvents and gases because it reacts with water to form hydrogen gas and calcium hydroxide, which can be easily removed. It is also used in the production of hydrogen gas for fuel cells and as a reducing agent in metallurgy.
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identify the most likely cause of earthquakes that occur in the area shown on the map
Answers
The most likely cause of earthquakes that occur in the area shown on the map is due to fault lines in the earth's crust.
What are earthquakes?Earthquakes are natural phenomena characterized by the shaking or trembling of the Earth's surface.
They occur due to the sudden release of energy in the Earth's crust along fault lines, which creates seismic waves that propagate through the Earth.
The Earth's crust is composed of several large tectonic plates that float on the semi-fluid layer of the Earth's mantle.
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Describe and explain the relationship between boiling point of a hydrocarbon and the size of its molecules?
Answers
Answer:
As you go up the fractionating column, the hydrocarbons have: lower boiling points lower viscosity (they flow more easily) higher flammability (they ignite more easily) This means that in general hydrocarbons with small molecules make better fuels than hydrocarbons with large molecules.
the frequency in an ac series circuit is doubled. by what factor does this change the capactive reactance?
Answers
The frequency in an ac series circuit is doubled. The factor does this change the capacitive reactance is halved.
The expression for the capacitive reactance is given as :
Xc = 1 / 2π ∨ c
it is clear from the above capacitive reactance expression that : capacitive reactance is inversely proportional to the frequency. so if frequency in as ac series circuit is doubled the capacitive reactance will be halved. and if the capacitive reactance is doubled than the frequency will be halved.
Thus, The frequency in an ac series circuit is doubled. The factor does this change the capacitive reactance is halved.
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5. (04.03 LC)
Which of the following steps can be used to identify an acid-base reaction
Check if one element replaces another element in a compound.
Check if the ions of two compounds exchange places.
O Check whether the reactants are an acid and a base.
Check whether the products are an acid and a base.
Plz help
Answers
Answer: Check whether the reactants are an acid and a base.
Explanation:
The step to determine the acid-base reaction, it has been checked that where there has been an acid or base in the reactants or not. Thus, option C is correct.
The acid base reaction can be described as the chemical reaction involving the exchange of hydrogen ions in between the reactant species.
The acid base reaction has been mediated in the system where there has been the presence of an acid or base as the reactant in order to accept or donate hydrogen ions.
Thus, to determine the acid-base reaction, it has been checked that where there has been an acid or base in the reactants or not. Thus, option C is correct.
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2. If an eagle is flying at a constant speed, it is accelerating. True or
False
Answers
Answer:
False
Explanation:
Answer:
:0
Explanation:
True or False: Adding water to the silver nitrate solution in the beaker will decrease the conductivity and concentration.
Answers
The statement "Adding water to the silver nitrate solution in the beaker will not decrease the conductivity and concentration." is False.
When water is added to a solution of silver nitrate, the total volume of the solution increases, but the concentration of silver nitrate remains the same. The concentration is defined as the amount of solute (in this case, silver nitrate) dissolved in a given volume of solution. By adding water, the total volume increases, but the amount of silver nitrate remains constant. Therefore, the concentration of silver nitrate does not change.
Conductivity, on the other hand, is a measure of how well a solution conducts electricity. In the case of a silver nitrate solution, the conductivity is primarily due to the presence of silver ions (Ag⁺) and nitrate ions (NO₃⁻) in the solution. Adding water does not affect the presence of these ions; it only dilutes the solution. Dilution, by itself, does not affect the conductivity of the solution. The number of ions per unit volume remains the same, and thus the conductivity remains unchanged.
Therefore, adding water to the silver nitrate solution in the beaker will not decrease the conductivity and concentration. The concentration of silver nitrate remains constant, and the conductivity of the solution remains the same as long as the concentration of silver and nitrate ions is unchanged.
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In an experiment, students were instructed to equally heat a sample of soil and a sample of water with heat lamps and then measure the temperature of each sample every minute for five minutes. The results are shown in the table.Which of the following predictions is BEST supported by the data?
Answers
Answer:
Explanation:
D. i had this on my science test!!!
Answer:
D
Explanation:
yup its D
Predict the [H3O+] and pH for a 0.200 mol/L aqueous solution of hydrocyanic acid.
Answers
Answer:
Ph should be around 3-6.
Explanation:
it is aqueous meaning the acid is dilute.
Which statement correctly describes electrochemical cells?
A. Electrochemical cells involve only oxidation reactions.
B. Electrochemical cells involve only reduction reactions.
C. Electrochemical cells involve oxidation-reduction reactions.
D. Electrochemical cells do not involve oxidation-reduction reactions.
Answers
Answer: C. Electrochemical cells involve oxidation-reduction reactions.
Explanation: Oxidation occurs at the anode, and reduction occurs at the cathode.
In the following acid-base reaction, CH3NH3+ is the CH3NH2(g) + H2O(1) → CH3NH3(aq) + OH¯(aq)
Conjugate base
Conjugate acid
Acid
Answers
In the given acid-base reaction, CH\(_3\)NH\(_2\)(g) + H\(_2\)O(1) → CH\(_3\)NH\(_3\)⁺(aq) + OH¯(aq), CH\(_3\)NH\(_3\)⁺ is the Conjugate acid.
What is acid-base reaction?The exchange with one or maybe more hydrogen ions, H+, among species that could be neutral (molecules like water, H2O, or acetic acid, CH3CO2H), as well as electrically charged (ions like ammonium, NH4+, hydroxide, OH, or carbonate, CO32), is what is known as an acid-base reaction.
It also covers equivalent behavior of acidic ions and molecules (aluminum chloride, AlCl3, and the silver ion AG+) that do not give hydrogen ions. In the given acid-base reaction, CH\(_3\)NH\(_2\)(g) + H\(_2\)O(1) → CH\(_3\)NH\(_3\)⁺(aq) + OH¯(aq), CH\(_3\)NH\(_3\)⁺ is the Conjugate acid.
Therefore, in the given acid-base reaction, CH\(_3\)NH\(_2\)(g) + H\(_2\)O(1) → CH\(_3\)NH\(_3\)⁺(aq) + OH¯(aq), CH\(_3\)NH\(_3\)⁺ is the Conjugate acid.
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If the same large amount of heat is added to a 250 g piece of aluminum and a 150 g piece of aluminum, what will happen?
Answers
please vote me brainliest i really need it for i can do my work
A perfume bottle is dropped in the corner of a room and it shattered. The odor of the perfume can be detected on the other side of the room. Which statement best describes this observation?
Particles are moving from regions of high concentration to low concentration.
Particles are moving from regions of low concentration to high concentration.
Particles are moving through a small opening into a smaller volume.
Particles are moving through a small opening into a larger volume.
Answers
Particles are moving from regions of high concentration to low concentration. Hence, option A is correct.
What is diffusion?Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration.
Diffusion results from the random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.
This process can neither be stopped nor reversed. It occurs when the medium surrounding the cell has a higher water concentration than the cell.
Hence, option A is correct.
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Answer: A. Particles are moving from regions of high concentration to low concentration.
Explanation:
Got it right, EDGU, 2023