The physical and chemical properties of the dental braces would be listed and explained below.
What are dental braces?Dental braces are the dental devices or tools that are used for correction of abnormally developed tooth.
Wearing of dental braces can help to permanently straighten the teeth.
The physical properties of dental braces include the following:
they have abrasion and abrasion resistancethey have thermal diffusivity and coefficient of thermal expansion.The chemical properties of dental braces is that they are chemically inert leading to its ability to avoid any reaction with the wet (as well as low and high pH) environment of the mouth.
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a student put a bottle of water and a can of sugared soda in the freezer to chill them quickly . when she took them out , the bottle of water was frozen but the can of soda was not. explain why this happen
Answer:
it's because the liquid in the bottle is supercooled
an individual takes in 2,000 ml of water during the day. ideally they should lose ml of water during the day.
A person consumes 2,000 cc of water each day. They should generally lose 2,000 ml of water each day.
What is Water?The most of the Earth's hydrosphere is made up of water, which has the chemical formula H2O. Water is an inorganic, clear, flavorless, tasteless, and nearly colorless liquid that is also present in all known living things.The term "water" refers to the liquid state of H2O at standard pressure and temperature when the hydrogen atoms are connected to the oxygen atom at an angle of 104.45°.Even though it doesn't offer food, energy, or organic micronutrients, it is necessary for all currently understood forms of life. Its molecules have the chemical formula H2O and are formed up of two hydrogen atoms connected by covalent bonds.There is water everywhere in the natural world. It creates aerosols that resemble fog as well as rain-like precipitation.To know more about water visit:
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In what ways are roller coaster rides similar to and different from training simulations in a NASA plane?
The similarities and differences between roller coaster rides and NASA plane training sims.
The forces are not sustained, as James Sebastian indicated, although being of approximately equal magnitude. This is what makes all the difference. The most physically taxing component of my high-performance aircraft flying is holding a turn at 6-8re or a G suit, you can quickly experience GLOC (G Induced LossG for anywhere between 10 and 20 seconds. Without the "hick" maneuver of Consciousness), which feels like your brain is being drained of blood. Consider that you will likely weigh as much as a small family automobile during those 20 seconds as well. We typically feel fatigued after a roller coaster flight since it is challenging and exhausting to move our limbs.
PS: Flying has destroyed skydiving and roller coasters.
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How two jars marked with the same carbon hydrogen and oxygen content could taste so different?
One jar appears be much sweeter than other
In the two jar marked with the same carbon hydrogen and oxygen content could taste so different because carbohydrates contain just carbon, hydrogen and oxygen atoms that's why in the one jar it appear much sweeter taste than other and in the carbohydrates all are connected in the particular way carbohydrates are classified into three subtypes: monosaccharides, disaccharides, and polysaccharides That's why in two jar marked with the same carbon hydrogen and oxygen content could taste different.
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The valence electron configuration for an unknown element is xs² xp, where x is an integer. Based on your knowledge of ion formation, predict the charge for the ion that would form when this element loses or gains electrons.
The element with electronic configuration xs² xp⁴ will gain 2 additional electrons resulting in the formation of an anion (negative ion), giving the element a charge of -2.
A charged atom is termed an ion and it is formed when an atom loses or gains electrons that are present in its outermost valence shell.
When an atom loses electrons, it turns into an anion and acquires a negative charge, whereas when it gains electrons, it turns into a cation and acquires a positive charge.
We now have an unknown element with the electronic setup xs² xp⁴. The electrical configuration shows that the element has four valence electrons in its outermost shell and requires two more electrons to complete its octet. As a result, the element will gain two more electrons, resulting in the formation of an anion (negative ion) with a charge of -2.
Note: Since losing four electrons is not possible, the element will gain electrons much more easily.
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At ph 7.0, converting an aspartic acid to beta-carboxyl aspartate, will have what effect on the overall charge of the protein containing it?
At ph 7.0, converting an aspartic acid to beta-carboxyl aspartate, will have Charge will remain same.
What is beta-carboxyl aspartate?An -amino acid used in the biosynthesis of proteins is aspartic acid (symbol Asp or D; the ionic form is called aspartate) (also known as aspartic acid or aspartate). It includes an amino group and a carboxylic acid, just like every other amino acid does. The protonated form of the -NH+ contains its -amino group.
While its '-carboxylic acid group is deprotonated to 'COO' under physiological conditions, it forms 3 in the absence of those conditions. Aspartic acid has an acidic side chain (CH2COOH) that interacts with other amino acids, enzymes, and proteins in the body. Under physiological conditions (pH 7.4), the side chain typically appears in proteins as the negatively charged aspartate form, or COO. Aspartic acid is a non-essential amino acid in humans, meaning the body can synthesize it as needed. By the codons GAU, it is encoded.
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How does the energy required to ionize a muonic hydrogen atom compare to that required to ionize a regular hydrogen atom?
The energy required to ionize a muonic hydrogen atom compare to that required to ionize a regular hydrogen atom:
What is muonic hydrogen atom?Muonic hydrogen is an exotic hydrogen atom, where a muon (instead of an electron) orbits proton. Because muon is 200 times heavier than the electron, the muon's orbit is 200 times closer to the proton in muonic hydrogen than that of the electron in regular hydrogen.
The extremely precise extraction of proton radius obtained by Pohl et al. from measured energy difference between the 2P and 2S states of muonic hydrogen disagrees significantly with that extracted from electronic hydrogen or elastic–proton scattering. This discrepancy is proton radius puzzle.
In muonic hydrogen electron is replaced by muon, μ which is 200 times heavier than electron
ΔE= En - Ei
for hydrogen like atom,
ΔE= 13.6(Z square /n square) - (-13.6Z square/1 square)
For, Z=1 and n=x (for ionization)
I.E.=13.6eV for electron
I.E.∝ mass (as binding energy proportional to mass)
I.E.=13.6eV*200
=2720eV
=2.720keV
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which is the hottest region of the bunsen burner flame? what is the approximate temperature of the flame? what is the commonly used gas in bunsen burner? what would happen to the flame if the air hole is closed? when heating glassware will you keep the air hole closed or open? explain.
The hottest part of the Bunsen flame, which is found just above the tip of the primary flame.
What is primary flame ?The main flame that gas welders employ is the neutral flame. There are two areas of a neutral flame: a hotter, lighter inner area and a cooler, darker outer area. A neutral flame produces a clean flame since the entire fuel gas is consumed during the operation.
The Bunsen flame's hotter region, immediately above the primary flame's tip, has a temperature of roughly 1,500 °C (2,700 °F). If there is insufficient air, the gas combination won't burn entirely and instead instead produce small carbon particles that, when heated to burning, give off light to create a brilliant flame.
Within the flame when burning hydrocarbon fuel, two processes are happening. The transformation of hydrogen and carbon into carbon monoxide and water is the first primary reaction. Carbon monoxide to carbon dioxide conversion is the secondary reaction; both are exothermic processes.
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Multivitamin supplements contain minerals such as calcium, iron, gold, copper, and zinc. true false
Multivitamin supplements contain minerals such as calcium, iron, gold, copper, and zinc. The statement is false.
A multivitamin is a dietary supplement that contains vitamins, dietary minerals, and other nutritional components. These medications can be purchased as tablets, capsules, pastilles, powders, liquids, or injectable formulations.
According to Wong, the main function of a multivitamin is to close nutritional gaps and ensure that people get their recommended daily intake of minerals including calcium, magnesium, dietary fibre, potassium, choline, and underconsumed vitamins A, C, D, E, and K.
Therefore, multivitamin supplements contain minerals such as calcium, iron, gold, copper, and zinc. The statement is false.
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What factor affects the rate of a chemical reaction?
a) collision frequency
b) fraction of collisions with sufficient energy
c) orientation of molecules
d) all of these
Answer:
d. all of these
Explanation:
i had this same question so hope this helps
Please help! will give brainlyst to 1st answer! help ASAP!!! 30 POINTS!!!!
Answer:
The answer to your question is D. 4.5 seconds hope this helps ;)
which statement is true about alkali metals?
A. Some of them explode when exposed to water.
B. They aren't conductors of heat or electricity.
C. They're in group 18 of the periodic table.
D. They aren't very reactive
Answer:
answer is a . because they have enough heat is given off during exothermic reaction
Answer: answer is a . because they have enough heat is given off during exothermic reaction
Explanation:
the second law of thermodynamics states that disorder in a system is always increasing. in simple terms, one can think about dropping nacl crystals into a glass of water. the solvation and diffusion of ions is favored by there is an increase in: group of answer choices
Then there is an increase in Entropy.
What is entropy?A state of disorder, unpredictability, or uncertainty are frequently related with the scientific concept of entropy, which is also a quantifiable physical characteristic. The notion and the phrase are employed in a variety of disciplines, including classical thermodynamics, where they were initially identified, statistical physics, which describes nature at the molecular level, and information theory. It has wide-ranging uses in physics and chemistry, biological systems and how they relate to life, cosmology, economics, sociology, weather science, and information systems, particularly the transfer of information through telecommunication.
The amount of different configurations that the atoms in a system can take depends on its entropy. Entropy can be thought of as a gauge of uncertainty or unpredictability.
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You place 0.45 mg of salicylic acid (sa, 138.12 g/mol) into water to make 87.3 ml of solution. what is the concentration of the sa?
The concentration of making 87.3 ml of salicylic acid solution with 0.45 mg is 3.73x10⁻⁵ M
To solve this problem, the formulas and the procedures that we have to use are:
M = n(solute)/v(solution) Ln = m / MWWhere:
M= molarityn = molesm = massv = volumeMW = molecular weightInformation about the problem:
m = 0.45 mgv = 87.3 mLMW = 138.12 g/molM = ?Converting the volume units from (ml) to (L) we have:
v(solution) = 87.3 mL * (1 L/1000 ml)
v(solution) = 0.0873 L
Converting the mass units from (mg) to (g) we have:
m = 0.45 mg * (1 g/1000 mg)
m = 0.00045 g
Having the MW we calculate the moles of salicylic acid:
n(salicylic acid) = m(salicylic acid) / MW(salicylic acid)
n(salicylic acid) = 0.00045 g / 138.12 g/mol
n(salicylic acid) = 3.258x10⁻⁶ mol
Applying the molarity formula, we get:
M = n(solute)/v(solution) L
M = 3.258x10⁻⁶ mol / 0.0873 L
M = 3.73x10⁻⁵ M
What is a solution?In chemistry a solution is known as a homogeneous mixture of two or more components called:
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when the group of fatty acids reacts in a dehydration synthesis reaction with the group of glycerol, fats or oils are formed.
Fats or oils are created when the hydroxide group of glycerol combines in a dehydration synthesis process with the carboxyl group of fatty acids.
What are fatty acids?
The building blocks of fat in our bodies and the food we eat are called fatty acids. During digestion, the body transforms lipids into fatty acids so they may be absorbed into the bloodstream. A molecule known as a triglyceride is created when three fatty acid molecules are linked together.
Saturated, monounsaturated, and polyunsaturated fatty acids are all present in dietary fats. Even while meals include all three forms of fatty acids, they are frequently grouped according to the prevalent type.
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an fcc metal is known to have a lattice parameter of 0.45 nm and an atomic weight of 96.4 g/mol. calculate its theoretical density in g/cm3. (answer format x.xx)
The density of an element with a lattice perimeter of 0.45 nm and an atomic weight of 96.4 g/mol is 7.05 g/cm^3.
Based on the position of atoms in a solid, they are divided into many categories like simple cubic, face-centered cubic(fcc), body-centered cubic(bcc), etc.
In face centered cubic type of solid, the atoms are present at the corners and face center, the effective number of atoms(Z) is 4.
The formula for the density of a solid is
Density = M x Z/ NA x a^3
Here M is the atomic weight of the metal= 96.4 g/mol
Z is the number of atoms = 4
NA is the Avogadro number = 6.022 x 10^23
a is the lattice perimeter = 0.45 nm
Putting the given values in the equation,
Density = 7.05 g/cm^3.
Hence, the density of an element with a lattice perimeter of 0.45 nm and an atomic weight of 96.4 g/mol is 7.05 g/cm^3.
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Which qualification is not a specific criterion for classifying a substance as a neurotransmitter?
Tendency of the substance to travel long distances between the site of origin and target area is not a specific criterion for classify a substance as a neurotransmitter.
Neurotransmitters are the chemical messengers that are responsible for transporting chemical “messages” from one neuron to the subsequent target cell. The target cell may be a gland, muscle, or another nerve cell. Neurotransmitters are generally classified on the basis of their inhibitory or excitatory action.
Neurotransmitters plays major roles in controlling body functions like senses, breathing, heart beat, hormone regulation and blood pressure.
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The image shows energy flowing from coal, to a coal-fired power plant, to a power
tower, and finally to a radio. Match the types of energy as they are converted from
one type to the other in each stage of the process. HELPP PLS
The types of energy are correctly matched below:
Thermal energy: Coal-fire power plant
Electrical energy: power plant
Sound energy: Radio
Chemical/potential energy:Coal
What is energy conversion?Energy conversion is also known as energy transformation whereby a type of energy changes to another form of energy.
There are various types of energy which includes:
Thermal energy: A typical example of thermal energy is the coal-fire power plant which generates heat energy upon its performance and usage.Electrical energy: A typical example of the electrical energy is the power plant which has the ability to generate electricity.Sound energy: A typical example of the sound energy is the radio device which has the ability to generate sounds.Chemical/potential energy: A typical example of chemical energy is the coal.Learn more about energy here:
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A solution made from 35 ml of ethanol and 75 ml of water has what volume percentage of ethanol?
A solution made from 35 ml of ethanol and 75 ml of water has volume percentage of ethanol is 35%.
What is a solution?Solution, in chemistry, homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of solubility. The term solution is commonly applied to liquid state of matter, but solutions of gases and solids are possible. Air, for example, is a solution consisting chiefly of oxygen and the nitrogen with trace amounts of several other gases, and brass is a solution composed of copper and zinc.
Life processes depend in the large part on solutions. Oxygen from lungs goes into solution in the blood plasma, unites chemically with the hemoglobin in the red blood cells, and is released to the body tissues. The products of digestion also are carried in solution to different parts of the body. The ability of liquids to dissolve the other fluids or solids has many practical applications. Chemists take advantage of the differences in solubility to separate and purify materials and to carry out chemical analysis. Most chemical reactions occur in the solution and are influenced by the solubilities of the reagents. Materials for chemical manufacturing equipment are selected to resist solvent action of their contents.
Percentage of ethanol = 35/100=35%
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A major concern about increasing global temperatures is that a large portion of polar ice could detach and melt into the ocean. if this happened, which two spheres would interact? hydrosphere and atmosphere hydrosphere and atmosphere cryosphere and biosphere cryosphere and biosphere cryosphere and hydrosphere cryosphere and hydrosphere geosphere and atmosphere
Cryosphere and hydrosphere would interact.
There are five main Earth's spheres: the geosphere, the hydrosphere, the cryosphere, the biosphere and the atmosphere.
The hydrosphere is all the liquid water masses on the Earth.
The cryosphere is all the frozen water masses on the Earth.
In a high temperatures ice will turn into the liquid water and interact with each other.
The spheres interact with one other. For example, plants (biosphere) produce oxygen (atmosphere) from carbon dioxide (atmosphere).
Substances in different spheres are recycled and turned into other phases and forms. This is important cycle and without that, there is no life on Earth.
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Answer: Cryosphere and Hydrosphere
Explanation:
Cryosphere and hydrosphere would interact.
Cryosphere is the frozen water part of Earth. Hydrosphere is all the water on Earth's surface
crystals are made using supersaturated solutions of solids in water. these solutions hold more of the solute than they would at room temperature. how are these solutions made?
crystals are made using supersaturated solutions of solids in water. these solutions hold more of the solute than they would at room temperature.
An appropriate solution might be that the water might want to be heated to a better temperature, which might provide molecules and ions extra kinetic energy, growing solubility.
What are supersaturated solutions?
A solution that has extra solute dissolved in it in comparison to a saturated solution is referred to as a supersaturated solution. It may be organized with the aid of using including extra solute to an solution this is already saturated with the technique of heating in order that the solute may be effortlessly dissolved. These solutions are in a non-equilibrium state.
Supersaturated solutions maintain extra of the solute at better temperatures than they might at room temperature. Hence, an appropriate solution might be that the water might want to be heated to a better temperature, which might provide molecules and ions extra kinetic energy, growing solubility.
Generally, solubility will increase with boom in temperature. At better temperature, the kinetic energy of molecules in answer boom. Consequently, extra of the molecules/ions of solutes collide extra with every different and dissolve. At decrease temperature, the molecules of the solutes crystalize out in answer.
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1 points ebookprintreferencescheck my workcheck my work button is now disableditem 3 what is the molality of a solution prepared by dissolving 84.7 g of kmno4 in 165 g of water?
The molality of a solution prepared by dissolving 84.7 g of kmno4 in 165 g of water is 3.25m
What is molality?Molality is a measure of number of the moles of solute in a solution corresponding to 1 kg or 1000 g of solvent. This contrasts with definition of the molarity which is based on a specified volume of solution.
The term molality is formed in analogy to the molarity which is molar concentration of a solution. The earliest known use of intensive property molality and of its adjectival unit, now-deprecated molal, appears to have been published by G. N. Lewis and M. Randall in the 1923 publication of Thermodynamics and Free Energies of Chemical Substances. Though two terms are subject to being confused with the one another, the molality and molarity of a dilute aqueous solution are nearly same, as one kilogram of water (solvent) occupies volume of 1 liter at room temperature and a small amount of solute has little effect on the volume.
Therefore,
molality = moles of solute / kg solvent, "m"
=0.535mol/0.165kg
=3.25m
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of a certain compound , known to be made of carbon and hydrogen, and to have a molecular molar mass of , is burned completely in excess oxygen, and the mass of the products carefully measured:
The compound X that have a Molecular molar mass of 138 g/mol is
Given here,
Compound x - 6g
malar mass of x - 138g/mol
Carbon dioxide - 13.39 g
water - 2.35g
So,
The moles of Water will be 0.13 mol
The moles of Hydrogen will be 0.26
Mass of hydrogen = 0.26 g
The moles of CO2 will be 0.304
The moles of carbon will be 0.304
Mass of Carbon = 3.65 g
Mass of Oxygen = Total mass of the compound - (mass of C + mass of H)
= 6.0 g - ( 3.65 + 0.262 ) g
= 2.09 g
Moles of oxygen = 0.131
Since Oxygen has the least moles, to find the molar ratio of the constituent atom, divide the moles of an atom from oxygen.
C = 0.304/0.131 = 2.8
C = 0.26/0.131 = 2
C = 0.131/0.131 = 1
convert 2.3 into a whole number
C = 2.3*3 = 7
H = 2*3 = 6
O = 1*3 = 3
Hence formula will be C7H6O3
What is molar mass?
The molar mass of a chemical compound is determined in chemistry by dividing the mass of a sample of that compound by the quantity of that compound, which is the number of moles in that sample, measured in moles. The molar mass of a substance is a bulk attribute rather than a molecular one. The compound's molar mass is an average over numerous samples, which frequently have different masses because of isotopes. A terrestrial average and a function of the relative abundance of the isotopes of the constituent atoms on Earth, the molar mass is most frequently calculated using the standard atomic weights. For converting between a substance's mass and amount in bulk amounts, the molar mass is the proper unit.
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what includes the carbon dioxide and carbon monoxide in the atmosphere, produced by business processes and systems?
Carbon emissions includes the carbon dioxide and carbon monoxide in the atmosphere, produced by business processes and systems.
What does carbon emission mean?
Carbon dioxide emissions or CO2 emissions are emissions stemming by the burning of fossil fuels and the manufacture of cement; they contain carbon dioxide produced during consumption of solid, liquid, and gas fuels also as gas flaring.
How does carbon emission work?A drive to figure , a flip of a light-weight switch and a flight out of town all rely on the combustion of fossil fuels like oil, coal and gas. When fossil fuels burn, they emit greenhouse gases like CO2 that contribute to heating . Ninety-eight percent of atmospheric CO2 comes from the combustion of fossil fuels.
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Which energy level has the highest amount of energy? A First B Second C Third D Fourth
The Energy levels that has the highest amount of energy is Fourth; option D
What are energy levels of electrons?
Energy levels or electron shells are fixed distances from the nucleus of an atom of an element where electrons are most probably to be found.
The energy levels are arranged in increasing energy levels from the nucleus of the atom.
The energy levels are given integer values of n, where n = 1, 2, 3, 4, 5,..
This means that the lowest energy level is the first one closest to the nucleus also known as ground state.
Therefore, the energy level which has the highest amount of energy from the given options is the fourth energy level.
In conclusion, electrons in atoms are arranged in energy levels starting from the first energy level closest to the nucleus.
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using the henderson-hasselbalch equation, calculate the mass of sodium acetate (dry) and volumes of glacial acetic acid (liquid) and dh2o you would need to prepare 50 ml of 0.2 m acetate buffer, ph 4.5.
Using henderson-hasselbach equation, the mass of sodium acetate(dry) is 0.2g and volumes of glacial acetic acid and dH₂O needed to prepare 50 mL of 0.2 M acetate buffer of pH 4.5 are 9.125 mL and 15. 875 mL
The Henderson-Hasselbach equation is :
pH = pKₐ + log [A ⁻]
[HA]
We have a pH 4.5 solution of acetic acid and sodium acetate. pKₐ of acetic acid is 4.75. Taking ratio of weak acid to conjugate base:
4.5 = 4.75 + log [sodium acetate]
[acetic acid]
[Sodium acetate] = 0.5623
[acetic acid]
Now, number of moles of each component to be calculated.
If total concentration is- 0.10 M, then:
[HA] + 0.5754[HA] = 0 .10 M
[HA] = 0.10
1.0000 + 0.5754
[A⁻] = 0.0365 M
Total volume given is - 50 mL(50 mL= 0.050 L), so the moles of each component :
nₐ₋ = 0.0365 mol x 0.050 L = 0.001825 mol
L
nhₐ = 0.0635 mol x 0.050 L = 0.003175 mol
L
Let the starting concentration were 0.20M, then we can find volume they both start with:
Vₐ₋ = 1L x 0.001825 mols A⁻ = 0.009125 L
0.20 mols A⁻
= 9.125 mL
Vhₐ = 1L x 0.003175 mols HA = 0.015875 L
0.20 mols HA
= 15.875 mL
To calculate mass of sodium acetate , using the equation:
pKₐ = -log Kₐ = -log 1.8 x 10⁻⁵ = 4.74 (kₐ of acetic acid is 1.8 x 10⁻⁵)
4.5 = 4.74 + log [acetate] / [acetic acid]
log[acetate] / [acetic acid] = -0.24
[acetate] / [acetic acid] = 0.182
x/0.2=0.182
x = [acetate] = 0.0364 M
0.0364 mol/L x 0.050 L x 136.08 g/mol = 0.247 g
Since the molarity is given to only one significant figure, answer can be reported as 0.2 g
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Which is true about about stable isotopes?
A stable nucleus has a similar number of protons and neutrons.
Isotopes are always unstable because they are radioactive.
Isotopes that are naturally occurring in nature are always unstable.
Isotopes with more neutrons than protons are always stable.
Isotopes are atoms with the same number of protons, but differ in numbers of neutrons.
Which is true about about stable isotopes?Isotopes are elements of the same family that have the same number of protons but different numbers of neutrons. Isotopes comprise of two or more than two types of atom that have the same atomic number but different mass number due to different number of neutrons in each element.
Isotopes are the members of elements which contains the same number of protons but they have different number of neutrons.
Isotope Of Hydrogen:
There are three isotopes of hydrogen i.e. protium 11H, deuterium 21H and tritium 31H. All these isotopes have one same number of proton which is 1 but different number of neutron.
The isotopes are different because of the different number of neutrons present in them.
So we can conclude that isotopes are atoms with the same number of protons, but differ in numbers of neutrons.
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Answer:
A stable nucleus has a similar number of protons and neutrons.
Explanation:
3. If Lithium and oxygen were placed together - predict what most of it would form (choose one) and explain why the compound you chose would form: Li O (Lithium monoxide) Li2 O (Lithium Oxide) or Li2O2 *(Lithium peroxide)
The compound that would be formed if lithium and oxygen were placed together is Li₂O (lithium oxide), which is option B.
What is a chemical reaction?A chemical reaction is a process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.
When a metal and nonmetal reacts, the charge of the metal becomes the subscript of the nonmetal and vice versa.
According to this question, lithium metal reacts with oxygen nonmetal. Lithium is an element with a charge of +1 while oxygen has a charge of -1.
This suggests that the compound that will be formed if lithium and oxygen were placed together is Li₂O (lithium oxide).
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Does a reaction occur when aqueous solutions of potassium carbonate and nickel(ii) nitrate are combined?
Does a reaction occur when aqueous solutions of potassium carbonate and nickel(II) chloride are combined yes no If a reaction does occur.
What is potassium carbonate ?The inorganic substance K2CO3 is known as potassium carbonate. It is a soluble in water white salt. It is ethereal and frequently takes the form of a moist or damp solid. To make soap and glass, potassium carbonate is mostly employed.
The main component of potash, as well as the more refined pearl ash or tartar salts, is potassium carbonate. In the past, potash was baked to eliminate impurities and produced as pearl ash. It was the pearl ash that was left behind, a fine, white powder. Samuel Hopkins received the first patent ever granted by the United States Patent Office in 1790 for a better way to make potash and pearl ash.
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Indium has two naturally occurring isotopes: indium-113 and indium-115. The relative atomic mass of indium is 114.82. Calculate the natural abundance of each isotope.
Answer:
114.818 amu.x(112.9041) + (1 - x)
(114.9039) = 114.818Solving for xx=0.043 or 4.3%
Explanation:
The average atomic mass written in the periodic table is determined from the relative abundances of the element's isotopes. The equation would be:Average Atomic Mass = ∑(Relative Abundance×Mass)Let be the relative abundance of Indium-113. Because there are only 2 isotopes, their relative abundances should equal to 1, such that the relative abundance for Indium-15 is (1-x). The atomic mass of indium is 114.818 amu.x(112.9041) + (1 - x)(114.9039) = 114.818Solving for x,x = 0.043 or 4.3%