The idea that an electron in a hydrogen atom can only have specific energies was first put out by Niels Bohr.
Niels Bohr was renowned for what?The Nobel Prize for 1922 was given in recognition of his study on the atomic structure. Since 1930, more and more of Bohr's activities at his Institute have been focused on studying the atomic nuclei's composition as well as their transmutations and disintegrations.
In his model of the atom, Niels Bohr used electrons that could only have exact solid orbits. The quantum concept was initially included into this atomic model. Due to the fact that hydrogen emits and absorbs light at particular wavelengths, that electron may wish to best arise in particular orbits.
Based on the notion that some physical quantities can only assume discrete values in the quantum world, Niels Bohr developed a principle for the hydrogen atom. In his desk-bound state theory, Bohr postulated that electrons no longer radiate energy as they orbit the nucleus but rather reside in states of constant energy. Bohr's artwork was entirely modified in response to the emission spectra of hydrogen.
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The percent by mass of calcium in the compound calcium sulfate (caso4) is approximately.
Calcium has approximately 20.439% of mass in calcium sulphate compound.
Calcium sulphate is the inorganic compound with the formula CaSO4 and related hydrates. in the form of anhydrite, it is used as a dessicant. One particular hydrate is better known as plaster of paris and another occurs naturallly as the mineral gypsum. It has many uses in the industry. All forms are white solids that are poorly soluble in water. Calcium sulfate causes permanent hardness in water.
The compounds exist in three level of hydration corresponding to different crystallographic structure and to minerals.
a. CaSO4 is an anhydrous state. The structure is related to that of zirconium orthosilicate.
b. CaSO4.H2O Dihydrate
c. CaSO4.1/2H2O Hemihydrate.
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2. what would happen to the rf if you left the tlc plate in the chamber for too long after the solvent reached the top? how does this affect the accuracy and precision of the rf value?
The solvent will flow to the top of the TLC plate and the chemicals identified on the silica plate will travel farther than expected if the TLC plate is left in the developing chamber for an extended period of time.
What occurs if TLC is left on for too long?That might lead to inaccurate Rf readings and the close-together spots colliding. With tweezers, remove the plate, and as soon as you can, pencil in the solvent front line.
If you wait too long, it will fade and you won't have all the data you need to figure out the Rf values.
There is no way to tell where the line should be drawn because the solvent front reached the top.
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Compare and contrast filtration and chromatography
On a solid media, chromatography requires solvent separation. Different boiling points are used in distillation. A liquid is removed through evaporation from a solution to leave a solid behind. Filtration separates different-sized particles.
What is chromatography ?Chromatography is a method used in laboratories to separate mixtures into their constituent parts. The combination is dissolved in a liquid solvent known as the mobile phase, which transports it through a system where a substance known as the stationary phase is fixed.
Chromatography paper is another name for filter paper. Paper for chromatography is entirely white. Chemical analysis filter paper, quality filter paper, ashless filter paper, air filter paper, engine oil filter paper, fuel filter paper, etc.
The basis for gel filtration chromatography is the distinct migration of dissolved solutes through gels with predetermined-sized holes.
Thus, A column of insoluble but highly hydrated polymers, such as dextran, agarose, or polyacrylamide, is used in gel filtering or gel-permeation chromatography.
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A wave's frequency is 5.00x10^14 s-1.
What is the wavelength?
The wavelength of the wave having a frequency of 5.00×10¹⁴ s⁻¹ is 6×10⁻⁷ m
How do I determine the wavelength?We know that the velocity is related to wavelength and frequency according to the following formula:
Velocity (v) = wavelength (λ) × frequency (f)
v = λf
Thus, with the above formula, we can determine the wavelength. Details below:
Frequency (f) = 5.00×10¹⁴ s⁻¹Speed of wave (v) of = 3×10⁸ m/sWavelength (λ) = ?Velocity (v) = wavelength (λ) × frequency (f)
3×10⁸ = wavelength × 5.00×10¹⁴
Divide both sides by 5.00×10¹⁴
Wavelength = 3×10⁸ / 5.00×10¹⁴
Wavelength = 6×10⁻⁷ m
Therforee, the wavelength is 6×10⁻⁷ m
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Which explains the change in ionization energy that occurs between removing the first and second electrons from an atom?
The ionization energy decreases because the ratio of the protons to electrons increases.
The ionization energy increases because the ratio of the protons to electrons increases.
The ionization energy decreases because the ratio of the protons to electrons decreases.
The ionization energy increases because the ratio of the protons to electrons decreases.
Option B. The ionization energy increases because the ratio of protons to electrons increases. explains the change in ionization energy that occurs between removing the first and second electrons from an atom.
The ionization energy is the degree of the functionality of an element to go into chemical reactions requiring ion formation or donation of electrons. it is also usually associated with the nature of the chemical bonding within the compounds shaped by the factors. See additionally binding strength; electron affinity.
Ionization energy is superb for neutral atoms, meaning that ionization is an endothermic system. more or less speaking, the nearer the outermost electrons are to the nucleus of the atom, the higher the atom's ionization electricity. In physics, ionization power is typically expressed in electronvolts (eV) or joules (J).
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4.
What does the law of conservation of matter state?
A Matter will only combine with other types of matter in specific ratios that
never change.
B Matter can be created or destroyed, but can never change from one form to
another.
C Matter can't be created or destroyed but can change from one form to
another.
D Matter can be created, but it can never be destroyed.
Answer:
Explanation:
The law of conservation of matter state that matter can't be created or destroyed but can change from one form to another. Option C is correct.
What is the law of conservation of matter?
According to the principle of conservation of matter, although matter cannot be generated or destroyed.
The law of conservation of matter state that matter can't be created or destroyed but can change from one form to another.
Hence option C is correct.
Answer:
c
Explanation:
A bottling plant has 126,515 bottles with a capacity of 335 mL, 108,500 caps and 48,775L of beverages
And let us address the bottle capacity....and this is given by the product. We know that, 1ml= 10⁻³ L
126,515 × 0.335 L = 42382 .525 L and it is the the bottle capacity.
The number of bottles you need is given by
33500/ 0.355= 9436 Bottles and there are enough caps . The limiting quantity is the beverage and there are reserve bottles and caps for the breakages and the failed seals that will undoubtedly occur.
Having brewed beer, ginger beer, or other beverages at home (and this is something that it is easy to do, and you get VERY good results). Most of the time, the bottles are the finite resource. You must gather, carefully clean, and disinfect each bottle.
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Would a precipitate form if a solution of calcium acetate were mixed with a solution of sodium phosphate? if so, what precipitate would form?.
Precipitate Ca₃(PO₄)₂ would be created by mixing sodium phosphate with calcium acetate.
What is precipitation reaction?When dissolved compounds react, they might produce one or more solid products in a process known as precipitation. Double displacement, double replacement, or metathesis reactions are some names for several of these processes, which frequently include the exchange of ions between ionic compounds in aqueous solutions.
Two soluble salts react to form precipitates, an insoluble salt.
The following equation illustrates the reaction between calcium acetate and sodium phosphate:
3Ca(C₂H₃O₂)₂ + 2Na₃PO₄ → Ca₃(PO₄)₂ +6NaC₂H₃O₂
The reaction produces Ca3(PO4)2, which is an insoluble salt and a precipitate.
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Five characteristics of a molecule that can be determined from a lewis structure.
The Lewis structure can be used to identify the following traits. Considering one,
H₃N + BF₃ ———> [H₃N—->BF₃]
what is a Lewis structure?The valence shell electrons of a molecule are depicted in a highly condensed manner in a Lewis structure. It serves as a visual representation of the electron arrangements surrounding specific atoms in molecules. In bonds involving two atoms, electrons are shown as lines or as "dots" respectively.
A molecule's Lewis structure reveals how many valence electrons are attached to each atom. The Lewis structure of a molecule can be used to infer a lot of significant information. These details include, among others;
Each atom in the molecule has a certain number of valence electrons attached to its valence shell.
The molecule's type of bonding
Whether the atoms in the molecule follow the octet rule or not
Potential resonance configurations that the molecule might have
whether or not atoms in the molecule have lone pairs of electrons.
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when barium chloride is allowed to react with silver nitrate to give barium nitrate and silver chloride, what are the coefficients for the balanced equation and what type of reaction is this?
A white solid precipitate is created when silver nitrate (AgNo3) and barium chloride (BaCl2) are combined.
What distinguishes a balanced equation from an ionic equation?The main distinction between a balanced equation and a net ionic equation is that a balanced equation displays all of the system's reactions together, but a net ionic equation just displays the net reaction that followed the conclusion of a given reaction.
Similar charges repel one another (positive to positive or negative to negative). A neutral item is one that typically has an even mix of positive and negative charges. Negative and positive charges in an item must balance out for static electricity to occur.
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explain the sequence of events that resulted in the end of reconstruction
The sequence of events that resulted in the end of reconstruction include:
Republicans lost powerSouthern Democrats agreed to Hayes becoming president if he would end ReconstructionHayes removed federal troops and Reconstruction ended.What is the reconstruction?The Reconstruction era was a period in American history following the American Civil War (1861–1865) and lasting until approximately the Compromise of 1877—when the last federal troops were withdrawn from the South—where attempts were made to deal with the problems of readmitting the eleven states that had seceded from the Union and fought against it in the Civil War, and to redress the political, social, and economic legacies of slavery.
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The statement from which investigation is an example of repetition?
A. Investigation 1
B. Investigation 2
C. Investigation 3
D. Investigation 4
Option D. Investigation 4, represents the statement from which investigation is an example of repetition.
Each is a repeated run of your combination of things and stages. Repetition does the replica runs consecutively even as replication does more than one run but throughout identical but special experimental runs. The investigation is a radical search for data, particularly the ones which are hidden or need to be sorted out in a complicated state of affairs. The intention of the research is commonly to decide how or why something befell.
Experimental investigations contain a procedure in which a "honest test" is designed and variables are actively manipulated, managed, and measured which allows you to collect proof to aid or refute a causal courting.
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Disclaimer:- your question is incomplete, please see below for the complete question.
Explain why a solution that is prepared by dissolving 0. 1 mol each of kh2po4 and k3po4 in 1 l of water is not a buffer solution.
The term "buffer" refers to a solution's capacity to withstand pH fluctuations, even when additional bases or acids are introduced. Buffer has the ability to neutralize any acids or bases supplied to the system in order to stabilize it.
Why does it act as a buffer?Equivalent molar ratios of KH2PO4 and K2HPO4 when combined with water result in the creation of buffer solution. A particular kind of dibasic salt is dipotassium phosphate. K2HPO4 is the solution that is created when hydrogen ions are added to K3PO4, and it functions as a conjugate acid. H2PO4 acts as a weak acid and HPO2 acts as a conjugate base of a in this system of buffers diluted acid . As a result, this KH2PO4 and K2HPO4 solution in water serves as a buffer.
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When parts of the upper mantle collide with each other, the force causes changes on the surface like volcanoes and fractures. Why does the collision not impact the asthenosphere?
When parts of the upper mantle collide with each other, the force causes changes on the surface like volcanoes and fractures the collision not impact the asthenosphere because asthenosphere is the plastic and brittle
The asthenosphere is the unique to our planet and earth is the only planet in the solar system with an asthenosphere and if planet doesn't have water this means it doesn't have an asthenosphere and the asthenosphere play an important role in plate tectonic movement and asthenosphere is situated underneath the solid lithosphere and the asthenosphere is ductile and deform easily compared to the overlying lithosphere so the collision not impact the asthenosphere because asthenosphere is the plastic and brittle
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what is the concentration (m) of ch3oh in a solution prepared by dissolving 23.4 g of ch3oh in sufficient water to give exactly 230 ml of solution?
Ch3ho has a concentration (m) of 1.589 mol/dm3 in a solution.
data supplied:-Given our parameters, 230 ml per liter of solution and a mole of solutes equal?
that: mass/molar mass = moles of solutes
mass = 11.7g.
thus the formula for CH3OH's molar mass is C(12)+H(1*3) +O(16)+1 =32g.
11.7g/32g Equals 0.365 moles of solutes.
Great, now that we have the moles, we can now enjoy the molarity (concentration)
Molarity is equal to 0.365mol/230*10-3, which is 0.365mol/0.230L, or 1.589mol/dm3.
What is the molarity unit?The formula for calculating molarity is molarity = number of moles of solute. litres of the solution. Since the volume of the solution will be measured in litres and the quantity of moles of solute is measured in mol. So, mol L – 1 is the unit of molarity.
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Which class of acid will have an increased concentration in someone who is suffocating?.
Acid will have an increased concentration in someone who is suffocating then suffocating does not affect any body acid
Acid in the body are gastric acid or stomach acid is a digestive fluid formed within the stomach lining and with pH between 1 and 3 gastric acid play a key role in digestion of protein by activating digestive enzyme
And the asphyxiation also called asphyxia or called suffocation is when the body doesn't get enough oxygen and without immediate intervention it can get lead to loss of consciousness or brain injury or death so any acid in the body doesn't affect if someone is suffocating
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Write a balanced chemical equation that describes an acid-base reaction that would allow you to determine the moles of aspirin present in a sample.
C9H8O4 + NaOH = C9H7O4Na + H2O, which is the same reaction, is a balanced chemical equation that describes an acid-base reaction that enables you to calculate the moles of aspirin contained in a sample.
Describe aspirin.Acetylsalicylic acid is simply known by its common name, aspirin. It is a benzoic acid that has had an acylated alcohol (really a phenol) function substituted in the ortho position. As a result, there are two possible reactions that might happen when aspirin and NaOH are combined: the quicker reaction is the deprotonation of the acid function, which results in sodium acetylsalicylate. In fact, several aspirin formulations contain this ingredient.
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Calculate the amount of heat released when one bottle (250 g) of ethanol is cooled from 45°C to 40°C. The specific heat of ethanol is 2.45 J/g°C
2054 J
-1533 J
-3063 J
4063 J
Answer:
C) -3063J
Explanation:
multiply m, c, and change in T
Identify whether the atom or ion in each equation shows oxidation or reduction. cu2 e− → cu cu2 is fe → fe3 3e−fe is f e− → f−f− is 2l− → l2 2e−l− is 2h 2e− → h2h is
In the mentioned reaction:
Cu²⁺ + e⁻ → Cu ; Cu²⁺ is reduced
Fe → Fe³⁺ + 3e⁻ ; Fe is oxidized
2l⁻ → l₂ + 2e⁻ ; l⁻ is oxidized
2H⁺ + 2e⁻ → H₂ ; H⁺ is reduced
Explain oxidation and reduction.Oxidation is the process of adding oxygen or electronegative elements or removing hydrogen or electropositive elements. According to the electronic concept, oxidation is defined as the process of losing one or more electrons.
Reduction is the process of adding hydrogen or electropositive elements or removing oxygen or electronegative elements. According to the electron concept, reduction is defined as the process of gaining one or more electrons.
For the given problem,
The oxidation number of Cu²⁺decreased from +2 to 0. thus, it is reduced.
The oxidation number of Fe increased from 0 to +3, it is therefore oxidized.
The oxidation number of l⁻ increased from -1 to 0. It is oxidized.
The oxidation number of H⁺ decreased from +1 to 0. It has been reduced.
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The relationship between absorbance of light by a solution and its concentration should be choose. So that when concentration increases, absorbance choose. .
Explanation:
Relation between concentration and absorbance: Absorbance is directly proportional to the concentration of the substance. The higher the concentration, the higher its absorbance.
The relationship between absorbance of light by a solution and its concentration should be Linear
b) Linear
so that when concentration increases, absorbance Increases
c) Increases
The Beer-Lambert Law, also known as the Beer-Lambert-Bouguer Law, describes the relationship between the absorbance of light by a solution and the concentration of the absorbing solute in that solution. This law is fundamental in spectroscopy and is used to quantify the concentration of a solute in a solution.
The Beer-Lambert Law is expressed as:
A = ε * c * l
Where:
A is the absorbance of the solution (unitless),
ε is the molar absorptivity or molar extinction coefficient (a constant specific to the solute and the wavelength of light),
c is the concentration of the solute in the solution (usually in mol/L or M),
l is the path length of the light through the solution (usually in centimeters).
The relationship between absorbance of light by a solution and its concentration should be: Linear
so that when concentration increases, absorbance: Increases
In a linear relationship, the absorbance of light by a solution increases in direct proportion to the concentration of the solute in the solution. As the concentration of the solute increases, more light is absorbed by the solution, leading to a higher absorbance value.
Therefore, when the concentration of a solution increases, the absorbance of light by that solution also increases in a linear fashion.
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The complete question is:
The relationship between absorbance of light by a solution and its concentration should be ___
Choose:
a) Exponential
b) Linear
c) Inverse
so that when concentration increases, absorbance ___
Choose:
a) Does Not Change
b) Decreases
c) Increases
The map below shows Mach's route to the pool. Mich left his house and walked to Javier's house. It took him 12 minutes. Then, Mitch and Javier walked to Andrew's house. It took them 6 minutes.
Finally the 3 boys walked to the pool in 2 minutes. What was Mach's average speed for his entire journey?
100%
A
B
Andrew
C
D
100 m
500 m
7 m/min
60 min
Javier
800 m
will pbcl2 precipitate when 275 ml of a 0.134 m solution of pb(no3)2 is added to 125 ml of 0.0339 m solution of nacl? the ksp of pbcl2 is 1.17e-5.
Pbcl2 precipitate when 275 ml of a 0.134 m solution of pb(no3)2 is added to 125 ml of 0.0339 m solution of nacl? the ksp of pbcl2 is 1.17e-5.
Given that,
The volume of NaCl = 125 ml
Concentration of NaCl = 0.0339 m
The volume of Pb(NO3)2 = 275 ml
Concentration of Pb(NO3)2 = 0.134 m
K(eq) = 1.17 × 10(-5) --------(1)
Total volume = 275 + 125 = 400 ml
Pb(NO3)2 ------- Pb(+2) + 2 NO3(-)
at t = 0 0.134 0 0
at t = t 0 0.134 0.134
NaCl -------- Na(+) + Cl(+)
at t = 0 0. 0339 0 0
at t = t 0 0.0339 0.0339
PbCl2 ---------- Pb(+2) + 2Cl(-)
Q(sp) = [Pb+2] [ Cl-]^2
By substituting the values of conc. of all the ions, we get Pbcl2 precipitate when 275 ml of a 0.134 m solution of pb(no3)2 is added to 125 ml of 0.0339 m solution of nacl? the ksp of pbcl2 is 1.17e-5.
= (275 × 0.134/ 400) (125 × 0.0339/400)^2
= 9.8 × 10(-6)
As we noticed that, Ksp > Qsp
Therefore, PbCl2 will not precipitate.
Thus, we concluded that the Pbcl2 precipitate when 275 ml of a 0.134 m solution of pb(no3)2 is added to 125 ml of 0.0339 m solution of nacl? the ksp of pbcl2 is 1.17e-5.
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Calcium and Hydroxide combine to produce:
Electron Dot Formula of compound
Compound formula
Compound name
Calcium hydroxide is created when calcium and oxygen mix.
Calcium Hydroxide in the Electron Dot formula:
Ca is a compound (OH)
Name of second compound is Calcium Hydroxide.
The Lewis structure is what?A Lewis structure is a very condensed representation of the electrons in the valence shell of a molecule. It is used to show the electron arrangements around specific atoms in compounds. The electrons are shown as "dots" or as a line when two atoms are bound together. To reach the "ideal" electron configuration, the octet rule and formal charges must be met.
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a 1.00 g sample of potassium bicarbonate is decomposed by heating. part a if the resulting potassium carbonate weighs 0.710 g and the calculated yield is 0.690 g , what is the percent yield? general exercises
The percent yield will be 103 %
Mass of potassium bicarbonate = 1.00 g
Molar mass of potassium bicarbonate = 100.115 g/mol
Mass of potassium carbonate = 0.710 g
Molar mass of potassium bicarbonate = 138.205 g/mol
Calculated yield = 0.690 g
Percent yield = ?
Calculated yield is given, if not you can find out by following steps:
Write the balanced chemical equation
2KHCO₃ → K₂CO₃ + H₂O + CO₂
Hence 2 moles of KHCO₃ decompose to produce 1 mole of K₂CO₃
This means that 2 × 100.115 g of KHCO₃ will produce 138.205 g of K₂CO₃
Calculate for 1 g = 138.205 / 200.23
Calculate for 1 g = 0.690 g
This means that 1 g of KHCO₃ will produce 0.690 g of K₂CO₃
Now calculate % yield
% yield = (actual yield / calculated yield)
% yield = (0.710 / 0.690) 100
% yield = 1.029 * 100
% yield = 103 %
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Which of the noble gases should show the greatest deviation from the ideal gas law at high pressures?.
Xenon a noble gas shows the greatest deviation from the ideal gas law at high pressures.
Real gases behave very differently from ideal gases at high pressures or low temperatures. It's useful to be aware that the ideal gas law considers the size of gas molecules to be minimal or nonexistent.
Due to its size and the fact that it is the largest of the group, Xe is predicted to deviate from the ideal gas the most under conditions of high pressure or low temperature.
Van der Waal forces come into play as gaseous atoms or molecules grow closer to one another under high pressure and low temperature. As a result, atoms or molecules begin to attract one another. As a result, gas behaves the furthest from its ideal state. While in an ideal world there would be no intermolecular forces of attraction, we can assume that gases do not attract one another.
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The antacid component of tumsris calcium carbonate. Assume tumsris 40. 0 percent caco3by mass. If we have 400. Mg of tumsrhow many ml of 0. 100 m hcl can we neutralize? express your answer in ml.
The amount of 0.100 M HCl that 400 mg of Tumsr can neutralize, measured in mL, is 32 mL.
What exactly is stoichiometry?Chemical A chemical reaction's reactants and products are studied quantitatively in stoichiometry. The Greek words "stoikhein" (which means element) and "metron" (which means measure) are the roots of the English word "stoichiometry."
CaCO3 makes up 40 percent of Tumsr. As a result, 400 mg of Tumsr will have
400 x 40/100 = 160 mg CaCO3
According to the reaction's equation:
CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂(carbondioxide)
Mole ratio = 1:2
Mole of CaCO₃ = 0.16g/100 = 0.0016 moles
Equivalent mole of HCl = 0.0016 x 2 = 0.0032 moles
Volume of 0.0032 mole= 0.0032/0.1
Volume of 0.0032 mole = 32 ml.
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Based on the parameters set forth in your lab procedure, what is the ph you should observe when you added the hcl to water?.
Acid has a pH below 7 while water has a pH of 7. A strong acid with a pH of roughly 3, HCl is. Water gets more acidic and loses pH in the range of 4-5 when HCl is added to it.
What is pH?A substance's pH is a gauge of how basic or acidic it is. It is a measurement of the amount of H+ present in the solution. It is equivalent to the negative logarithm of the concentration of H+ ions mathematically.
A solution is acidic if its pH value is less than 7, and basic if it is greater than 7. Acids have a lower pH because they contain more H+ ions. Strong acid hydrochloric acid has a pH between 2 and 3.
Water has no charge. Water becomes acidic in pH if any acid is introduced. Therefore, if HCl is given to water, the pH of the water will change to 3-5 depending on the acid content.
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How does the enthalpy change of this reaction and your knowledge of molecular structure inform your understanding of why excess oxalate ions in the body can lead to kidney stones but excess chloride ions will not?.
The heat that enters or leaves the system is determined by the enthalpy change that takes place during a reaction. whether there is a rise in the system's enthalpy.
What does urine containing calcium oxalate mean?Kidney stones are frequently linked to calcium oxalate crystals, which can develop when the body has an excessive amount of oxalate (found in foods like spinach). Severe groin or stomach discomfort, nausea, fever, and problems urinating are all signs of kidney stones.
Does calcium promote absorption of oxalate?In healthy adults who consume 800 mg of calcium per day, two to twenty percent of the oxalate they consume is absorbed in their digestive tracts. The most effective moderator of oxalate absorption is calcium.
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When the rate of reaction of bleach and dye are studied which reactant is in excess?.
In the reaction between bleach and dye, the bleach was excess relative to the dye.
what are the properties of bleach ?bleach is used for bleaching of cotton and linen in textile industry and also used as bleaching wood pulp in paper industry, bleaching washed clothes in laundry.
It is the main constituent of a solution which constitute ~3-6% sodium hypochlorite (NaOCl), is a mixed with small amounts of sodium hydroxide, hydrogen peroxide, and calcium hypochlorite.
Chlorine bleach is a type of base and especially good at removing stains and dyes.
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Silicon carbide (sic) is an important ceramic material that is made by allowing sand (silicon dioxide, sio2) to react with powdered carbon at high temperature. When 10 kg of sand (sio2) is used in the reaction, what is the amount (in grams) of co being produced?.
Actual mass of CO recovered is 99.4g
Balance equation is : SiO2 + 3C SiC + 2CO
Molar mass of CO is 28.01 g/mol
Moles of CO = given mass/molecular mass = 100/28.1 = 3.55mol
mass = moles of sio2 x molecular mass
Actual mass = 3.55mol of CO x 28 = 99.4g
The amount of matter that makes up an element's atom, or atomic mass. It is expressed as a multiple of 1.992646547 1023 gram, which is equal to one-twelfth of the mass of the carbon-12 atom, which has an atomic mass of 12 units. 1 atomic mass unit (amu) is equal to 1.660539040 1024 grams on this scale. An indicator of an element's atomic mass is the atomic mass unit (AMU or amu). The atomic mass unit (AMU), also called the dalton (Da) or the unified atomic mass unit (u), expresses both atomic and molecular masses. Only 1/1,836 the mass of a proton, 9.1093837015 1031 kg, is the rest mass of an electron. Therefore, compared to a proton or neutron, an electron is thought to be almost massless, and the electron mass
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