Copper [Cu] has 28 inner core electrons
Copper is a group 11 element with atomic number 29. It has one valence electron
Valence electron is the electron in the outermost shell and it's the number of electron an atom lose or gain to become a noble gas
Cu has four electron shells with 2,8,18 and 1 electrons in each shell respectively
The outermost shell containing just one electron .
Apart from this shell, the rest of the shells contain 28 electrons and these are regarded as the inner core electrons
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if the isotopes of Candium were truly isotopes (not candy pieces) what characteristics would they have in common?what would be different about each isotope?
If the isotopes of Cadmium were truly isotopes then their atomic number is the same but the atomic mass is different from one another.
What is isotopes?An isotope is a species of atoms that have the same atomic number as well as the position of that atom in the periodic table. They are identical in chemical behavior but the physical properties of that atom due to different atomic masses. The atoms belong to the same element, having same atomic number which is expressed as Z but having different mass number A, this is called isotope. For example, Carbon atom has three isotopes i.e. carbon-12, carbon-13 and carbon-14. These elements of carbon having mass numbers 12, 13 and 14 respectively.
So we can conclude that the isotopes of Cadmium have same atomic number but different mass number.
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If an atom contains one electron and one proton, will it carry any charge or not?
Answer:
Neutral, no charge
Explanation:
Proton is positive, while electron is negative.
Sum of both is 1 - 1 = 0
so the atom is neutral, which means it doesn't carry any charge.
For 10 points who do you know that the sun is made out of hydrogen and helium.
How would I explain it to a 3rd grader
The sun is made up of hydrogen and helium because these two gases are responsible for fusion reaction which generate light and heat energy.
Why sun is made up of hydrogen and helium?
Scientists use the device of spectroscopy in order to determine the composition of the Sun. The Sun is made up of light elements such as hydrogen and helium. It is composed of 74% hydrogen atom and 25% helium. In the core of the sun, gravitational forces produce huge pressure and temperatures. The temperature of the sun in this layer is 27 million degrees Fahrenheit that is equals to 15 million degrees Celsius. Hydrogen atoms are fuse together creating helium atom. This process is known as nuclear fusion reaction.
So we can conclude that the sun is made up of hydrogen and helium so that the fusion reaction is initiated.
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When a molecule of oxygen moves from outside of a eukaryotic cell to eventually be reduced by complex iv of the electron transport chain, how many phospholipid bilayers does it need to cross?.
The oxygen molecule needs to cross three phospholipid bilayers.
The process of ATP synthesis in which electrons are transported from NADH or FADH2 to oxygen is known as oxidative phosphorylation. The process of cellular respiration ends at this stage. Chemiosmosis and the electron transport chain are two interrelated processes that make up oxidative phosphorylation. As electrons move from one molecule to the next in the electron transport chain, energy is released throughout the process, which is then utilized to create an electrochemical gradient. However, during chemiosmosis, ATP is produced using the energy stored in the gradient.
Oxygen is found at the end of the electron transport chain, where it takes electrons and picks up protons to make water.
Therefore, it follows that a molecule of oxygen must travel through three phospholipid bilayers, which are represented by the cell membrane and the external and internal membranes of the mitochondria, in order for it to go through the electron transport chain.
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A sample of sulfur consisting of three isotopes has a relative atomic mass of 32.133. The following table gives the relative abundance of two of these isotopes. Mass number of isotope 32 33 Relative abundance / % 92.4 1.9 Use this information to determine the mass number of the third isotope. Give your answer to the appropriate number of significant figures.
The mass number of the third isotope, given the data from the question is 34
How to determine the mass numberThe mass number of the third isotope can be obtained as illustrated below:
Relative atomic mass =32.133Mass of 1st isotope = 32Abundance of 1st = 92.4%Mass of 2nd isotope = 33Abundance of 2nd = 1.9%Abundance of 3rd = 100 - (92.4 + 1.9) = 5.7%Mass of 3rd isotope = ?Relative atomic mass = [(Mass of 1st × Abundance of 1st) / 100] + [(Mass of 2nd × Abundance of 2nd) / 100] + [(Mass of 3rd × Abundance of 3rd) / 100]
32.133 = [(32 × 92.4) / 100] + [(33 × 1.9) / 100] + [(Mass of 3rd × 5.7) / 100]
32.133 = 29.568 + 0.627 + (Mass of 3rd × 0.057)
32.133 = 30.195 + (Mass of 3rd × 0.057)
Collect like term
32.133 - 30.195 = Mass of 3rd × 0.057
1.938 = Mass of 3rd × 0.057
Divide both sides by 0.057
Mass of 3rd = 1.938 / 0.057
Mass of 3rd = 34
Thus, we can conclude that the mass of the 3rd isotope is 34
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Missing part:
See attached photo
suppose you carry out a tlc separation of acetaminophen and phenacetin on silica gel using a nonpolar developing solvent. which should have the higher rf value and why?
Non-volatile mixtures can be separated using a process called thin layer chromatography (TLC). Since acetaminophen has a hydroxyl group, it is more polar than phenacetin.
Does acetaminophen or phenacetin have a lower Rf value?Since acetaminophen has a hydroxyl group, it is more polar than phenacetin. Phenacetin will be more soluble and migrate to the top than the polar component because we are employing a non-polar solvent.
Non-volatile mixtures can be separated using a process called thin layer chromatography. The experiment is carried out on a piece of glass, plastic, or aluminum foil that has been lightly covered with an adsorbent substance. Typically, silica gel, cellulose, or aluminum oxide are utilized as the substance.
Because acetaminophen is more polar than phenacetin and nonpolar molecules pass through silica gel more quickly than polar ones do, acetaminophen would have a lower Rf value.
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find the molecular formula of the alkane represented in the mass spectrum. a mass spectrum. the peak at mass 100 has an 8% relative abundance. the peak with mass 85 has a 40% abundance. the peak at 71 has a 3% abundance. the peak at 57 has a 30% abundance. the peak at mass 43 has a 100% abundance. the peak at mass 29 has an 18% abundance. molecular formula: c {n}h {x} cnhx
Answer: the molecular altatude of the supercalifragilistic gene should expand by 100%,
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Explanation:
^20 10 Ne is an isotope of neon. How many protons does it have? How many neutrons? How many valence electrons? [Separate your answers with a space, as in 4 5 2.]
An isotope of neon with formula 20/10 Ne will possess 10 protons, 10 neutrons and 8 valence electrons i.e. 10, 10, 8.
What is an isotope?Isotopes are two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei. Thus, isotopes have the same atomic number but a different mass number.
According to this question, an isotope of neon, an inert gas, has a formula of 20/10 Ne. The mass number of this isotope is 20 while the atomic number is 10.
This means that the number of neutrons is 20 - 10 = 10 while the number of protons is 10. Neon like all other noble gas has a filled shell and a valence electron of 8.
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A student is preparing 0.5 L of a 0.1 M magnesium chloride solution. The student uses the following steps to get started.
Step 1: Gather a graduated cylinder, balance, and stirring rod.
Step 2: Calculate the number of moles of magnesium chloride needed.
Step 3: Add the water to reach 0.5 L of magnesium chloride solution and stir until dissolved.
Step 4: Label the solution 0.1 M MgCl2.
The process as described is incomplete. What would fix the process so that it is accurate?
A) The student made a mistake in Step 3 by adding enough water to reach 0.5 L of water. Exactly 0.5 L of water should have been added.
B) The student made a mistake in Step 1 by getting a graduated cylinder. The student should have gotten a beaker.
C) The student made a mistake in Step 4 by labeling the solution 0.1 M MgCl2. It should be 0.1 g MgCl2.
D) The student made a mistake in Step 2 by calculating the moles of magnesium chloride. The grams should be measured to make the solution.
The student made a mistake in Step 2 by calculating the moles of magnesium chloride. The grams should be measured to make the solution.
How do you prepare a solution?In preparing a solution of a solid, we would need to follow a number of steps so that the desired concentration of the solution is what we would end up having.
The steps to be followed are;
1) Gather a graduated cylinder, balance, and stirring rod.
2) Calculate the mass of magnesium chloride needed.
3) Add the water to reach 0.5 L of magnesium chloride solution and stir until dissolved.
4) Label the solution 0.1 M MgCl2.
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in addition to acting as a comparison to the post-partition salicylic acid solution, the pre-partition salicylic acid solution (not mixing with chloroform) serves a 2nd propose to:
The pre-partition salicylic acid solution (not mixing with chloroform) serves a second propose to act as a standard for linear regression analysis.
What is salicylic acid?
The chemical formula for salicylic acid is HOC6H4CO2H. It is a colorless, bitter-tasting substance that serves as both an aspirin precursor and metabolite (acetylsalicylic acid). It is a plant hormone that has been classified as an experimental teratogen by the EPA's Toxic Substances Control Act (TSCA) Chemical Substance Inventory. The word for willow tree in Latin is salix. Some anti-acne products contain it as an ingredient. Salicylates are the name for the salts and esters of salicylic acid.
The pre-partition salicylic acid solution (not combining with chloroform) acts as a benchmark for linear regression analysis in addition to serving as a comparison to the post-partition salicylic acid solution.
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the activity of the enzyme used for the synthesis of oxaloacetate from pyruvate and co2 is increased by which acts as an allosteric activator. rubp acetyl coa rubisco g3p 3pg
The activity of the enzyme used for the synthesis of oxaloacetate from pyruvate and carbon dioxide is increased by acetyl-coenzyme A which acts as an allosteric activator.
After glycolysis, pyruvate is changed over into acetyl-coenzyme A in arrange to enter the citric corrosive cycle.
Oxaloacetate synthesis from pyruvate is a vital anaplerotic response that makes oxaloacetate from pyruvate. The protein could be a mitochondrial protein containing a biotin prosthetic gather, requiring magnesium or manganese and acetyl-coenzyme A.
Pyruvate carboxylase could be a biotin-containing enzyme that catalyzes the arrangement of oxaloacetate within the nearness of an allosteric activator, acetyl-coenzyme A, from pyruvate.
Furthermore, small pyruvate is decarboxylated to acetyl-coenzyme A by the pyruvate dehydrogenase complex. Or maybe, pyruvate is changed over to the 4-carbon oxaloacetate by pyruvate carboxylase.
This switch happens fundamentally in reaction to an increment in free fatty acids oxidation. Free fatty acids from adipocytes are promptly oxidized within the liver.
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your friend is studying a specific exergonic reaction. your friend hypothesizes that the addition of enzyme x will reduce the δg of this reaction, thus allowing it to proceed spontaneously. what do you think of your friend's hypothesis?
An enzyme do not change delta G.
What is exergenic reaction?1)A reaction that releases free energy is known as an exergonic reaction. This type of reaction can happen spontaneously, unaffected by external forces, because it releases energy rather than absorbing it.
2) Exergonic reactions are those in chemistry where the change in free energy is negative. A system's total amount of available energy is measured by its free energy; negative changes indicate that energy has been released, whilst positive changes indicate that energy has been stored.
Enzyme only changes activation energy .Enzyme do not change delta G so, this hypothesis does not fit with what is know about the reaction.
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HELPPPPPPPPPP PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
Answer:
hi there, are u okay . what do u need help for
Answer:
Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not
Explanation:
Which of the following increases the motion of atoms and molecules?
Answer:
a rise in tempature
Explanation:
look it up
What is the
wavelength of a
yellow light with a frequency
of 5.2 x 10¹4 Hz?
The wavelength of a yellow light with a frequency of 5.2 x 10¹4 Hz is 6 × 10⁻⁷.
What is wavelength ?
A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles. This length is typically defined in wireless systems in meters (m), centimetres (cm), or millimetres (mm) (mm).
When electromagnetic radiation such as radio waves, light waves, or infrared (heat) waves travel through space, they leave behind distinctive patterns. Each wave has a distinct size and shape. Wavelength is the separation between peaks (high points).
By measuring the distance between any two identical locations on adjacent waves, the wavelength can always be found. When a longitudinal wave is present, the distance between one compression and the next is measured to determine the wavelength.
γ = λf
λ = γ / f
= 3 × 10 ⁸ / 5 × 10 ⁴
= 0.6 × 10⁻⁶
λ = 6 × 10 ⁻⁷
Thus, The wavelength of a yellow light with a frequency of 5.2 x 10¹4 Hz is 6 × 10⁻⁷.
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Answer:
5.8 x 10^-7
Put in this answer and got it correct
Why would tobacco companies start adding ammonium salts to cigarettes?
Answer:
The tobacco industry has for many years used ammonia as a relatively innocuous additive to augment certain flavors, to economize on costs by expanding or “puffing” the cured leaf, to denicotinize (reduce the amount of nicotine in) tobacco, and even to reduce some of the carcinogens in tobacco smoke.
What are radicals in chemistry?
In chemistry, the expression radicals is used to denote highly reactive substances that may contain unpaired electrons.
What are chemistry radicals?The expression chemistry radicals indicate the presence of substance that are unstable because they have unpaired electrons that tends to form bonds with other substances. For example, the chlorine molecule may suffer homolysis under UV light and thus generate two radicals of Cl with unpaired electrons.
Therefore, we can conclude that the chemistry radicals are highly unstable molecules that are characterized to have unpaired electrons and therefore are prone to form chemical bonds with other substances.
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Magnesium reacts with bromine to form magnesium bromide. When
1.2 g of magnesium reacts with 2.0 g of bromine, which is the limiting
reagent and what mass of magnesium bromide is formed?
Mg + Br2 → MgBr2
1.
Sir William Ramsey is one scientist credited with identifying the noble gas argon. Sir Ramsey
separated nitrogen gas from the air and reacted it with an excess of magnesium, producing solid
magnesium nitride. However, a small sample of an unreactive gas remained with a density different
from the density of the nitrogen gas. Sir Ramsey identified the unreactive gas as argon and later
went on to discover neon, krypton, and xenon.
State, in terms of valence electrons, why the noble gases that Sir Ramsey discovered have similar
chemical properties.
The noble gases have similar chemical properties because they have the same number of valence electrons.
What are noble gases?The noble gases are the gases that are found in the last group of the periodic table. These are the gases that have been said to be unreactive under normal conditions. Thee have been found to react only under stringent conditions as we can see.
Given the fact that the octet rule states that an element that contains eight electrons in its outermost shell would be unreactive and all the noble gases have complete octets hence the noble gases are unreactive.
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What is the ATOMIC NUMBER for an element with 5 protons, 6 neutrons and 2 electrons?
The element's Atomic number , which has 5 protons, 6 neutrons, and 2 electrons (the atomic number is the number of protons) = 5
What in an atomic number?the number assigned to a chemical element according to its atomic number in the periodic system, which places the elements in ascending order of the number of protons in their nuclei. As a result, the atomic number is also the number of protons, which in a neutral atom is always equal to the amount of electrons.
Briefing:Protons and neutrons are added to determine an element's mass number. The only number that may change while maintaining the identity of an element is the number of neutrons for that element (because the atomic number is the number of protons).
Mass number = protons + neutrons
According to the given data;Given:
5 protons,
6 neutrons
2 electrons
Atomic number = ?
We know that the Mass number = protons + neutrons:
Mass number = protons + neutrons
Mass number = 5 + 6:
Mass number = 11
The element's Atomic number , which has 5 protons, 6 neutrons, and 2 electrons (the atomic number is the number of protons) = 5.
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Please help balance the chemical equation.
No links or files! I will report
Answer:
H3PO4+3NaBr->3HBr+Na3PO4
Explanation:
H3PO4+3NaBr->3HBr+Na3PO4
this equation is balance because, the number of
H atom and Na atom is equal to right hand side reaction and Left hand side reaction.
explain the realationship between heat and thermal energy
Answer: both are a way of heat
Explanation: see you can see the there is a lot of heat in the oven but like the sun thermal energy is so its heat but it was made naturally
Think about a wave model with a rope. How do you think the size of the wave going through the rope is affected by how far you moved your arm up and down or how far you moved your arm back and forth?
A.
The farther I move my arm, the larger the size of the wave in the rope.
B.
The less I move my arm, the larger the size of the wave in the rope.
C.
How far I move my arm has no effect on the size of the wave in the rope.
Given that the disturbance travels along the length of the rope, the farther I move my arm, the larger the size of the wave in the rope.
What is a wave?A wave is a disturbance along a medium which transfers energy. We know that a wave could be classified based on the nature of the propagation of the wave as the transverse or the longitudinal waves.
The wave that is created along a string is a longitudinal wave. The direction of the wave motion is the same as that of the disturbance. It is very easy to create a wave on a string when the sting is moved vigorously and the wave is found to travel quickly across the length of the rope is we can see from the image that I have attached to make the concept and the context of the answer a bit more clearer to the student in this case.
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In a separate location, take notes from the sources you’ve identified. These notes will provide details for your research paper. While reading and taking notes, use these reading strategies to analyze texts and websites.
Explanation:
External force of 220 applied on a pistan of a cylinder containg 1.25 ammonia gas move 10cm as shown in diagram below
each of the reactants i nreaction a is a single sugar molecule also called a monosaccharide. what prefix before saccharide would you use to describe surcrose
In A, two types of molecules are generated. Two monosaccharides are bonded together by a condensation reaction in which glycoside bonds form between the monosaccharides and release the water molecule. In a specific, A reaction, fructose, and glucose molecules combine to generate sucrose (disaccharide).
In the case of the B reaction, two distinct amino acids (monomers) combine to generate a third molecule, a dipeptide; the bond formed between these two molecules is known as a peptide bond (amine group of first amino and cool group of second amino acid). This reaction is also condensation and results in the formation of water molecules. The fact that both create water molecules and dimers from two monomers is shared in this region.
Monosaccharides (from Greek monos: single, saccharin: sugar) are the most fundamental molecules (monomers) from which all carbohydrates are formed.
They are typically water-soluble white crystalline solids. Despite their name, only a few monosaccharides have a sweet flavor (sugars).
Sucrose, the most common table sugar, is a disaccharide made up of one molecule of each of the two monosaccharides D-glucose and D-fructose.
Monosaccharides include glucose (dextrose), fructose (levulose), and galactose.
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Check all the boxes that describe the electron sea model.
It is the simplest metal bonding model.
It is the most complicated metal bonding model.
Metallic bonding results from the transfer of valence electrons.
Metallic bonding results from the sharing of valence electrons.
The electrons are delocalized.
The electrons are attracted to specific nuclei.
The delocalized electrons serve as the glue that keeps the metal atoms together.
The electrons that are attracted to specific nuclei serve as the glue that keeps the metal atoms together.
The true statements about the electron sea model is;
It is the simplest metal bonding model.The electrons are delocalized.The delocalized electrons serve as the glue that keeps the metal atoms together.What is the electron sea model?The term bonding has to do with the situation in which there is a combination of the atoms that come from two or more elements. Now let us note that formation of a bond means that the properties of the elements would cease to be individually observed once a bond has been formed.
Having said this, let us talk about the metallic bond. The metallic bond is the kind of bond that occur between the positive ions of the metal and the electron cloud or sea that have left the ions. It then follows that the bond is formed by the electrostatic interference that occurs between the electron sea and the positive ions.
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Rowan is at an all-you-can-eat breakfast. He has a pancake on his plate and is going to put another pancake on top of it. Which one of these other pancakes would make the bottom pancake the warmest? Explain how the energy and temperature of both the bottom pancake and your chosen top pancake will change after they’ve been touching for a while, and why.
Pancakes are warmth due to conduction. When there is conduction in a system, there is change in temperature and energy.
When a system absorbs or loses warmth, the common kinetic energy of the molecules will exchange. Consequently, warmth transfer effects in a change inside the machine's temperature so long as the machine is not undergoing a segment trade.
The change within the inner power of a gadget is the sum of the heat transferred and the paintings carried out. The heat glide is same to the exchange within the inner energy of the device plus the work performed.
When the temperature of an object will increase, the average kinetic energy of its particles increases. When the average kinetic power of its debris will increase, the object's thermal energy increases. consequently, the thermal energy of an object will increase as its temperature increases.
Inner strength is the whole kinetic energy and capacity power of all the particles, atoms and molecules that make up a system. Heating adjustments the energy stored within the system by growing the strength of the debris that make up the system.
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The volume of a pond being studied for the effects of acid rain is 35 kiloliters (kL). There are 1,000 liters (L) in 1 kL and 1 Times. 106 microliters (mL) in 1 L.
What is the volume of this pond in microliters?
The volume of a pond being studied for the effects of acid rain that is 35 kiloliters (kL) if converted in microliters is found to be 3.5 x [tex]10^{10}[/tex]
What is acid rain?Acid rain is the actual form of precipitation that includes acidic components like nitric or sulfuric acid that fall from the atmosphere on the earth's surface.
Acid rain refers to rain or any other type of precipitation that is unusually acidic, that is, contains large amounts of hydrogen ions.
The acid rains are considered harmful as they corrode and destroy these infrastructures, and plants and cause irritation to the organisms.
The volume of a pond that is being studied for the effects of acid rain is 35 kiloliters (kL).
There are a total of 1,000 liters (L) in 1 kL and 1 x [tex]10^6\\[/tex] microliters (mL) in 1 L.
Then 35 kL (1,000 L/ 1kL) (1 x 10^6 microliters / 1 L) = 3.5 x [tex]10^{10}[/tex] microliters
The volume of this pond calculated in microliters is 3.5 x [tex]10^{10}[/tex] microliters.
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A tank is filled with 300 g of ozone (O3(g)) at -58.75oC. The pressure inside the tank is 6250 kPa.
Calculate the volume (in L) of the tank.
The volume of gas in the tank is determined as 1.78 L.
What is the volume of gas in the tank?The volume of gas in the tank is calculated by applying idle gas law as follows;
PV = nRT
where;
n is the number of moles of the gasP is the pressure of the gasV is the volume of the gasR is ideal gas constant = 8.314 L.kPa/mol.KT is temperature of the gas = -58.75⁰C = 214.25 Kn = reacting mass / molar mass
n = (300 g) / (3 x 16 g)
n = (300 g) / (48 g/mol)
n = 6.25 moles
The volume of the gas is calculated as follows;
V = nRT/P
V = (6.25 x 8.314 x 214.25)/(6250)
V = 1.78 L
Thus, the volume of ideal gas increases with increase in temperature.
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a block of lead has dimensions of 4.50 cm by 5.20 cm by 6.00 cm
A block of lead has dimensions of 4.50 cm by 5.20 cm by 6.00 cm, the density of lead is mathematically given as
x= 11.30 g/cm^3
This is further explained below.
What is the density of lead?Generally, in order to determine the lead's specific gravity; To begin, we would use the formula to find out how much space the block of lead takes up;
Volume= length * width * height
After plugging the values into the formula, we get the following:
Volume = 4.50 * 5.20 * 6.00
Volume = 140.4 cm^3
The next thing that we do is determine the density of lead;
After plugging the values into the formula, we get the following:
X = 11.30 g/cm^3
In conclusion, the density of lead is 11.30 g/cm^3
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CQ
A block of lead has dimensions of 4.50 cm by 5.20 cm by 6.00 cm. The block weighs 1587 g. From this information, calculate the density of lead.