explain what is happening with electrons to form an ionic polar covalent nonpolar covalent and metallic bond
Answers
An ionic polar covalent nonpolar covalent and metallic bond: Polar covalent bonds result when electrons are unequally shared between atoms, whilst nonpolar covalent bonds end result when electrons are extra equally shared between atoms.
The electron is a subatomic particle with a bad primary electric fee. Electrons belong to the first generation of the lepton particle family, and are normally thought to be standard particles due to the fact they don't have any regarded components or substructure.
Electrons are the smallest of the particles that make up an atom, and they bring a poor charge. The range of protons and electrons is equal in a neutral atom. The hydrogen atom, for instance, has simply one electron and one proton. The uranium atom, however, has 92 protons, and therefore, 92 electrons.
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Related Questions
04. a migrating bird can travel at a speed of 10m/s. how far it will travel in 20min at this speed?
Give your answer in meters (m) and in kilometers (km).
Answers
Answer:
12000m & 12km
Explanation:
covert 20mins into seconds.
20 x 60= 1200seconds
distance = speed x time
distance = 10 x 1200
distance = 12000m
1km=1000m
12000/1000= 12km
hope that helps :)
3 reasons why aluminium is used in making of cooking vessels
Answers
Answer is : It is a good thermal and electrical conductor. -The main point to be noted is that aluminium is a highly reactive element and still it is used for making cooking utensils. The reason is that aluminium has a very high affinity for oxygen. So, it reacts with oxygen and forms a layer of aluminium oxide on its surface.
Answer:
This is because aluminium reacts with oxygen present in air to form a thin layer of aluminium oxide . This oxide layer is very stable and prevents further reaction of aluminium with oxygen . Also , it is light in weight and a good conductor of heat Hence , it is used to make cooking utensils .
Explanation:
Believe it
Which argument is correct
Answers
Answer:
The first agrument.
Explanation:
Because only heat can be transfered. Thats why if you put something hot in a refridgerator the heat energy will go off in the fridge and powers the cold energy. Im pretty sure this is right this is what my teachers tought me so i hope they right
The standard reduction potential of a chromium electrode is -0.74 volts when chromium is reduced from chromium (III). The standard potential of the cell where chromium is oxidized and cerium (IV) is reduced to cerium (III) is 2.35 V. For each half reaction how many electrons are transferred
Answers
Answer:
three electrons were transferred in the process
Explanation:
The electrode potential of the cathode is
E°cathode= E°cell + E°anode
E°cathode = 2.35V + (-0.74V)
E°cathode= 1.61 V
Let us look at the reduction half equation; the oxidation half equation must be;
Oxidation half equation;
Cr(s) ----> Cr^3+(aq) + 3e
The reduction half equation must now be
Reduction half equation;
3Ce^4+(aq) + 3e ----> 3Ce^3+(aq)
This implies that three electrons were transferred in the process as shown by the balanced half cell reaction equations.
Which of the following contains factors that all affect polymer properties? A. chain length, intermolecular forces, and the molar mass of the monomers B. chain length, the C-H bond strength, and the extent of chain branchingC. chain length, intermolecular forces, and the strength of C- H bonds D. chain length, intermolecular forces, and the extent of chain branching
Answers
The answer is D. Chain length, intermolecular forces, and the extent of chain branching all affect polymer properties.
Chain length influences a polymer's mechanical and physical properties, such as tensile strength and toughness. As the chain length increases, the polymer becomes more resistant to deformation. Intermolecular forces, including van der Waals forces, hydrogen bonding, and dipole-dipole interactions, play a crucial role in determining a polymer's thermal, mechanical, and solubility properties. Polymers with strong intermolecular forces exhibit higher melting points and increased mechanical strength.
Finally, the extent of chain branching impacts a polymer's properties by influencing its crystallinity, density, and molecular weight distribution. Highly branched polymers have lower crystallinity and density, which can result in reduced mechanical strength and increased permeability. Understanding these factors is essential for designing polymers with specific desired properties for various applications.
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A solution has a pH of 8.4. what is the H+ concentration of the solution?
A solution has a pH of 11. What is the H+ concentration of the solution? Is the solution an acid or base?
Your father goes to the store to buy cleaner to remove such deposits from your bathtub. He has a choice between a product containing lemon juice (H+ =10^-2.5M) and one containing vinegar (H+ = 10^ -3.3M) which product would you recommend he purchase and why?
Answers
[H+]=3.98x10^-9
[H+]=10^-pH=10^-8.4
[H+]=10^-11, base
[H+]=10^-pH=10^-11
A solution with a pH of more than 7 is basic.
Lemon juice because it is more acidic
pH of lemon juice: 2.5
pH of vinegar: 3.3
Since the pH of lemon juice is lower, it is more acidic and will be more effective at removing the basic deposits.
If two groups of people created unbalanced forces, what could happen?
Answers
Answer:
90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you
Explanation:
Answer:
your not specfict. Sorry i cant help you try next rime
Fischer Projections of L- and D-threonine
a. Identify the functional groups in the Fischer projection of L-threonine.
Answers
The alkyl group (R) attached to the chiral α-carbon of L-threonine amino acid is H₃C-CH-OH. The Fischer projection of L-threonine is attached below.
What is an amino acid?Amino acids can be defined as organic compounds that contain both amino and carboxylic acid functional groups. Most amino acids are α-amino acids, which comprise proteins.
Amino acids are divided according to the positions of the functional groups, such as alpha- (α-), beta- (β-), gamma- (γ-), or delta- (δ-) amino acids. As proteins, amino acids form 2nd largest component of human muscles and tissues.
In the structure of amino acids, R denotes a side chain attached to each amino acid. The carbon atom attached to the carboxyl group (-COO) is called the α–carbon. Amino acids with an amino group (-NH₂) attached directly to the alpha-carbon is known as α-amino acids.
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A change in which property of light will have no effect on whether or not the photoelectric effect occurs?
O frequency
O energy
O intensity
wavelength
Answers
Answer:
Intensity
Explanation:
The correct answer is -Intensity
Reason -
Intensity has no affect on whether or not the photoelectric effect occurs.
As frequency , wavelength are inversely proportional.
Answer: C)
Explanation:
a factory has a batch of hand sanitizer with 50\pp, percent alcohol content. how much pure (100\00, percent concentration) alcohol should they include in a 600\,\text{ml}600 ml 600, start text, m, l, end text bottle to make a 68\hh, percent mixture?
Answers
Using the percentage by volume of the solutions given, we can calculate that we require 216 mL of 100% alcohol and 384 mL of 50% alcohol.
The percentages given refer to the percentage by volume (%V). We need to make 600 mL of 68% alcohol solution, by mixing a certain volume of 50% solution (A) and a certain volume of 100% alcohol (B). So, we know that:
A + B = 600 mL
We also know that the total volume of alcohol in the end solution needs to be:
0.68 * 600 mL = 408 mL
So, by extension:
0.50 * A + B = 408 mL
Based on the first equation, we can say that:
A = 600 mL - B
If we use that A in the second equation we get:
0.50 * (600 mL - B) + B = 408 mL
300 mL - 0.50 B + B = 408 mL
If we rearrange this equation we get:
B - 0.50 * B = 408 mL - 300 mL
0.50 * B = 108 mL
B = 108 mL / 0.50
B = 216 mL
A = 600 mL - 216 mL = 384 mL
So, we need 216 mL of 100% alcohol and 384 mL of 50% alcohol solution to get 600 mL of 68% alcohol solution.
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Answer:216 ml
Explanation: I got it right
You took a can of soda out of the refrigerator. After holding the can for a minute, how does your hand feel? Explain what happened to cause this. Be sure to identify the method of transfer and the direction of heat flow.
HELP I HAVE MY FINALSSSS
Answers
Heat flows from your hand to the can of soda. This is conduction of heat.
Heat is a form a energy that occurs as a result of temperature difference between bodies. Heat flows from one body to another in response to a temperature gradient between the two bodies.
When you bring a soda out of the refrigerator, heat flows from your hand to the can of soda. As heat is withdrawn from your hand, your hand feel cool. This is an example of heat transfer by conduction.
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Which one of the following ions outside the neuron would make it very difficult for a depolarization to occur? a) chloride. b) sodium. c) potassium. d) manganese.
Answers
Chloride ions outside the neuron would make it very difficult for a depolarization to occur.
In a normal resting state, the internal environment of a neuron has a net negative charge compared to the external environment.
This is known as the resting potential. During depolarization, this membrane potential switches from negative to positive very rapidly due to an influx of positively-charged cations (such as sodium) into the cell.
To interfere with this process, the ions outside of the neuron would have to shift the normal resting state so that the internal environment of the cell no longer has a net negative charge.
This will prevent the influx of cations that will cause depolarization. In order to do this, we would need to balance out the negative charge inside the cell with negative charge outside of the cell. In the list of options, chloride is the only negatively-charged ion. Therefore, the answer would be Chloride.
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please help me with this question;-;
Answers
High melting point of boron is due to its existence as
Small covalent moleculeBoron has a melting point of 2353 Kelvin and this is because boron atoms have small covalent bonds which makes the atom compact and hence it has a high melting point...~
Small covalent molecule
Boron has a very little structureLets check the Electronic configuration
z=5
\(\\ \rm\hookrightarrow 1s^22s^22p^1\)
Option A is correct
how do we differentiate chemical change from physical change
Answers
Answer:
Chemical change :has change in mass, heat is needed, new element is formed, hard to reverse.......
Physicalchange:does not have change in mass, heat is not necessary, no new element is formed, easy to reverse
what are compounds that contain ionic bonds called?
Answers
A 0.940g sample of barium chloride is heated and 0.800g of anhydrous residue remains after cooling. How many moles of anhydrous barium chloride were present in the sample? How many moles of water were present in the sample?
Answers
Answer: (0.800g BaCl2) / (208.233g BaCl2/mol) =
0.00384 mol BaCl2
Explanation: Hope this helps :)
The number of moles of anhydrous barium chloride is equal to 3.84 ×10⁻³ mol and the number of moles of water is equal to 7.78 ×10⁻³ mol.
What is a mole?A mole can be described as a standard unit that is used to determine the number of atoms, molecules, ions, or other particular particles in the given mass of the substance. The mass of one mole of any chemical element is known as atomic mass and that of any chemical compound is called the molar mass of that compound.
Given the chemical reaction of decomposition of barium chloride:
\(BaCl_2.2H_2O\longrightarrow BaCl_2 +2H_2O\)
Given the mass of the hydrated barium chloride = 0.940 g
The mass of the anhydrous barium chloride = 0.800 g
The molar mass of the anhydrous barium chloride = 208.23 g/mol
The number of moles (n) of anhydrous barium chloride = 0.800/208.23
n = 3.84 ×10⁻³ mol
The mass of the water = Mass of hydrated barium chloride - anhydrous barium chloride
Mass of water = 0.940 -0.800 = 0.14 g
The number of moles of water = 0.14/18 = 7.78 ×10⁻³ mol
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Which is the best definition of
force?
A. a push or pull
B. a change in motion
C. a motion that does not change
Answers
Answer:
A
Explanation:
........................
Answer:
push or pull i think..okay?
A compound called resveratrol is an antioxidant, found in the skin of grapes. Identify the functional groups in resveratrol. (12.1,12.3)
Answers
The skin of grapes contains an antioxidant called resveratrol. Determine the resveratrol functional groupings. Alcohol makes comprises the compound's functional group.
What is an alcohol ?An organic molecule known as an alcohol has at least one hydroxyl functional group attached to a saturated carbon atom. The major alcohol ethanol, which is used as a narcotic and is the main alcohol contained in alcoholic beverages, was the substance to which the term "alcohol" originally referred.
Resveratrol is a naturally occurring polyphenol that can be found in a variety of foods, including grapes, berries, peanuts, and several medicinal plants. It has a stilbene functional group in its molecular structure.
Thus, The skin of grapes contains an antioxidant called resveratrol. Determine the resveratrol functional groupings. Alcohol makes comprises the compound's functional group.
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a cell containing 97% h2o is placed into a 90% h2o solution. the solution is to the cell, which would cause the size of the cell to
Answers
A cell containing 97% h₂o is placed into a 90% h₂o solution. the solution is to the cell and there the size of the cell will shrink .
What is a solution ?A particular kind of homogenous mixture made up of two or more substances is known as a solution. The solution is formed when a solute is a substance that has been dissolved in a solvent, which is the other substance in the mixture.Solute + Solvent = Solution
The cell will cremate because the water in the solution will gets released and there the state of equilibrium exists and that can be determined as Hypertonic solution.
A liquid that has a higher concentration of dissolved particles than regular cells and blood do, like salt and other electrolytes. For instance, wounds are soaked in hypertonic liquids.
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Both suspensions and colloids are heterogeneous mixtures. Define and characterize a suspension, listing similarities
and differences to a colloid. Give several examples of suspensions.
Answers
When the suspension is let to stand, the dispersed nano-particles come apart from the dispersing phase. A suspension is a uniform mixture of a single material's particles dispersed across a second stage.
What are suspensions in biology?A suspension is a homogenous mixture made up of two or more components. Most of the nanoparticles are evenly distributed throughout the liquid and thus are plain to see with the na-ked eye. Instead of dissolving in the solution, the solute's particles remain suspended there.
What occurs when there is a suspension?How a suspension works is based on the idea of force dispersion, which includes converting force into heat or eradicating the effects that force would have had. Struts, dam-pers, & springs are employed to accomplish this.
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When we look at heat transfer problems that include phase transitions, there can bemanynec-essary steps. Consider a material of massmthat undergoes two phase transitions: from solid toliquid and then from liquid to gas. It starts at an initial temperature ofT0(well below the meltingtemperature ofTm) and it heated until it is a gas at a temperature ofTf(well above the boilingtemperature ofTv). How many different steps (simple temperature changes or phase transitions)of heat transfer would you need for this problem
Answers
Answer:
There would be 3 temperature changes and 2 phase transitions
Explanation:
The temperature of the material would first increase from T0 to Tm (its melting point)- This is one temperature change.
It would the change from solid to liquid at its melting point Tm.- This is one phase transition.
Its temperature would then increase from its melting point Tm to its boiling point Tv -This is another temperature change.
It would then change from liquid to gas at its boiling point Tv - This is another phase transition.
Finally, its temperature would then increase from its boiling point to T(f) - This is the third temperature change.
So, there would be 3 temperature changes and 2 phase transitions
the united state environmental protection agency (epa) sets limits for the concentrations of hazardous chemicals that can be found in soil, or groundwater. suppose you are the defense attorney for a company charged with exceeding the epa limits on calcium perchlorate [ca(clo4)2] discharges into the local sewer system by 20 ppm. assume that the chemical analysis by the epa was performed by titrating the water with edta to determine the calcium content. determine three questions: would you want to ask the chemist when they were on the witness stand to try and have the charges dismissed against your client?
Answers
As a defense attorney representing a company charged with exceeding the EPA limits on calcium perchlorate discharges, you would want to ask the chemist specific questions to challenge the validity of the test results and potentially have the charges dismissed. Here are three possible questions:
1. What were the quality control measures taken during the EDTA titration process to ensure accuracy and precision of the results?
This question aims to determine if proper procedures were followed during the analysis. The chemist should have taken appropriate measures such as calibration of equipment, replicates, and use of standards to ensure accurate results. Any shortcomings in quality control could cast doubt on the reliability of the test results. 2. Was there any possibility of sample contamination or interference during the collection, transportation, storage, or analysis of the water samples? This question seeks to understand if any external factors may have influenced the test results. The chemist should explain how they ensured that the samples were not contaminated or affected by other substances. Any indication of possible contamination or interference could weaken the case against your client. 3. Can you explain how the EPA determined the specific limit of 20 ppm for calcium perchlorate in groundwater, and provide scientific evidence supporting this limit? By asking this question, you are challenging the basis for the EPA's established limit. The chemist should be able to explain the rationale behind setting the limit at 20 ppm, including any relevant studies or scientific data. If the chemist cannot provide a satisfactory explanation, it may cast doubt on the validity of the limit itself and weaken the case against your client.
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The total number of calcium atoms in the expression 3 cos 2 shown in the equation 3 CaCl 2 +2Na 3 PO 4 Ca(PO 4 ) 2 +6 NaCl is:
Answers
Answer:
\(C\)Explanation:
Here, we want to calculate the percentage composition of the compound formed when oxygen reacts with iron
We have the equation of reaction as follows:
\(4Fe_{(s)}\text{ + }3O_{2(g)}\text{ }\rightarrow\text{ }2Fe_2O_{3(s)}\)The compound formed is Fe2O3
Now, let us get its percentage composition
The molar mass of the compound is 160 g/mol
The atomic mass of iron is 56 amu
The atomic mass of oxygen is 16 amu
Now, let us get the percentage composition:
\(\begin{gathered} \text{Iron = }\frac{2\times56}{160}\text{ }\times\text{ 100 \% = }70\text{ \%} \\ \\ \text{Oxygen = }\frac{3\times16}{160}\text{ = 30\% } \end{gathered}\)The closest here is thus the option C
Which of the following is True about nitrogen -14 and nitrogen -16
A, They are completely different Atoms
B, they are the exact same atom
C, they are the same except that carbon -14 has 2 extra electrons
D, they are isotopes of the same atom
Answers
The enthalpy of vaporization of methanol is 35. 27 kJ mol-1 at its normal boiling point of 64. 1°C. Calculate (a) the entropy of vaporization of methanol at this temperature and (b) the entropy change of the surroundings
Answers
Answer:
influence of a business invironment
What is the name of Pb(NO3)2? Explain how you determined the bond type and the steps you used to determine the naming convention for the compound.
Answers
This chemical is known as lead (II) nitrate. It is an ionic assembly (salt compound) comprised of lead cations in the +2 oxidation state. With regard to the naming convention, each lead (II) cation is paired with two nitrate anions, each having a charge of -1.
What is a naming convention in Chemistry?Chemical nomenclature is a set of principles for naming chemical substances in a systematic manner. The International Union of Pure and Applied Chemistry designed and developed the most widely used nomenclature in the world (IUPAC).
The basic goal of chemical nomenclature is to guarantee that no ambiguity exists between a spoken or written chemical name and the chemical compound to which the name refers. Each chemical name should only relate to one substance.
It is required to indicate the charge of these cations or compounds containing these cations when identifying them. Ionic compounds are formed when cations and anions interact. The cation of an ionic compound is named first, followed by the anion. When writing their chemical formulae, they use the same format.
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Write a CER using what we observed from this activity answering the following question.
Newtons 2 Law of Motion: An object will accelerate in the direction of the net force. Net force and acceleration
is dependent upon the mass of the object. F=ma or a = F/m
How does this activity fit into Newton's second law and equations?
CLAIM:
EVIDENCE:
Reasoning:
Answers
We can see here a CER that explains how Newton's second law of motion applies to the activity:
Claim:
Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to the mass of the object.
What is Newton's 2nd Law of Motion?The given claim means that the more force you apply to an object, the faster it will accelerate, and the more mass an object has, the slower it will accelerate.
Evidence:
In the activity, we observed that the cart accelerated more when we applied a greater force to it. We also observed that the cart accelerated less when we increased the mass of the cart. This is consistent with Newton's second law of motion.
Reasoning:
The greater the force acting on an object, the greater the acceleration. This is because the force is what causes the object to change its motion. The more mass an object has, the more inertia it has.
Conclusion:
Newton's second law of motion is a fundamental law of physics that describes the relationship between force, mass, and acceleration. It is a powerful tool that can be used to understand and predict the motion of objects.
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Elements with a high ionization energy lose electrons easily (True or False).
Answers
Answer:
False
Explanation:
Julianna blows air into a balloon to inflate it. What can be known about the atoms of the air? They are close together. They are moving constantly at high speeds. They vibrate in place. They are held together by strong attractions.
Answers
Answer:
option B on e2020
Explanation:
I did the test
Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. The air particles keeps on moving constantly at high speeds. The correct option is option B.
What is matter?Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.
Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.
The distance between atoms of air is very large, they do Brownian motion. These atoms are not at fixed position. They keep on moving at high speed with high kinetic energy.
Therefore, the air particles keeps on moving constantly at high speeds. The correct option is option B.
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How does aerobic glucose catabolism compare with processes like the combustion of methane or wood (made of cellulose, a glucose polymer)? How is it different?
Answers
Aerobic glucose catabolism is a metabolic process that breaks down glucose molecules in the presence of oxygen, producing energy, water, and carbon dioxide. It compares with the combustion of methane or wood because also releases energy and produces water and carbon dioxide as byproducts.
Similarities and differences between glucose catabolism and combustion of methane or woodAerobic glucose catabolism, also known as cellular respiration, is the process by which cells break down glucose in the presence of oxygen to produce ATP (energy). This process is similar to the combustion of methane or wood in that they all involve the breakdown of a substance to release energy. However, there are also some key differences between these processes.
One major difference is that aerobic glucose catabolism occurs within cells, while the combustion of methane or wood occurs outside of cells. Additionally, the products of aerobic glucose catabolism are carbon dioxide, water, and ATP, while the products of combustion are typically carbon dioxide, water, and heat.
Another difference is the efficiency of these processes. Aerobic glucose catabolism is a highly efficient process that produces a large amount of ATP for the cell to use. In contrast, the combustion of methane or wood is less efficient, as much of the energy is released as heat rather than being captured for use.
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