Answers
(84.5/32.6) x 100
2.5920245 x 100
Answer ➭259.20% ( )
Related Questions
Current Attempt in Progress
How many total and how many valence electrons are in the following neutral atom?
fluorine (F)
Total electrons:
Valence electrons:
Answers
Total electrons in fluorine (F): 9. Valence electrons in fluorine (F):7.
The element fluorine (F) is located in the periodic table in Group 17, also known as Group VIIA or the halogens. Fluorine has an atomic number of 9, indicating that it contains 9 electrons in its neutral state.
To determine the total number of electrons in a neutral atom of fluorine, we refer to its atomic number, which corresponds to the number of protons and electrons in an atom. Thus, fluorine has a total of 9 electrons.
Valence electrons are the electrons in the outermost energy level, also known as the valence shell, of an atom. For fluorine, the valence electrons are found in the second energy level, specifically in the 2p orbital. Since the second energy level can accommodate a maximum of 8 electrons, fluorine has 7 valence electrons.
Valence electrons play a crucial role in chemical bonding and determining the reactivity of an element. In the case of fluorine, its 7 valence electrons make it highly reactive, as it only needs one additional electron to achieve a stable, full outer electron configuration of 8 electrons. This strong desire to gain an electron makes fluorine one of the most electronegative elements on the periodic table.
In summary, a neutral atom of fluorine (F) has a total of 9 electrons, with 7 of them being valence electrons located in the 2p orbital.
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One time I went to the mountains. I was scared of altitude sickness, so I got cannisters of oxgen (O₂). These cannisters contain 2L of compressed oxygen (O₂). When the oxygen is pressurized, it condenses into its liquid form inside the cannister. How much would this oxygen (0₂) weigh in its liquid form?
2.9 grams
1.6 grams
3.6 grams
4.3 grams
Answers
The 2.9 grams would this oxygen (0₂) weigh in its liquid form.
What is oxygen ?
The sole sort of atom in oxygen makes it a chemical element, which is a substance. An oxygen atom has eight protons in its nucleus, as indicated by its atomic number of 8, which is represented by the letter O in its official chemical formula. At room temperature, oxygen is a gas that lacks all other flavors, smells, and colours. Molecular oxygen can be found in nature.
What is liquid ?
Unlike a solid, which is more rigid than a liquid, a liquid is a kind of substance with unique qualities. The opposite of a solid, which has a defined shape, is a liquid, which can flow. An alternative is that a liquid will take on the shape of the container it is held in.
Therefore, 2.9 grams would this oxygen (0₂) weigh in its liquid form.
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Calculate the average mass from the data set 1 5.455 2 5.495 3 5.453
Answers
The average mass from the given data set is approximately 5.4677.
What is average mass?An indicator of the central tendency of a collection of data reflecting item masses is average mass. It is also referred to as the arithmetic mean and is determined by adding the masses of all the objects in a dataset and dividing the result by the total number of objects in the dataset. In order to give a general idea of the normal mass of the objects in the collection, the average mass is employed. It is extensively employed in a variety of industries, including engineering and scientific research. In statistics, the idea of average mass is crucial since it allows for the conclusion- and decision-making-based analysis of big datasets. It offers a summary metric that is helpful for contrasting various data sets.
To calculate the average mass from the data set, we need to add up all the masses and then divide by the number of masses.
Adding up the masses:
5.455 + 5.495 + 5.453 = 16.403
Dividing by the number of masses (which is 3 in this case) gives us the average mass:
16.403 / 3 = 5.46766666667 (rounded to 11 decimal places)
Therefore, the average mass from the given data set is approximately 5.4677.
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Completely describe the electrolytic cell corresponding to the following equation. (Hint: you may need to combine 2 half reactions from Table 17-1 to make one of the half reactions for this cell)
Cr2O7^2– + I^– → Cr^3+ + IO3^–
With work please
Answers
The first half-reaction is the oxidation of Cr2O7^2– to Cr^3+ and the second half-reaction is the reduction of I^– to IO3^–. When combined, the overall reaction is Cr2O7^2– + I^– → Cr^3+ + IO3^–.
The electrolytic cell consists of two electrodes, one anode and one cathode, both of which are immersed in an electrolyte solution. At the anode, the Cr2O7^2– ions are oxidized to Cr^3+ ions, releasing electrons into the external circuit.
At the cathode, the I^– ions are reduced to IO3^– ions, and the electrons from the external circuit are used to drive the reaction. The electrolyte solution must contain both Cr2O7^2– and I^– ions in order to facilitate the transfer of electrons between the electrodes.
The overall reaction is driven by the potential difference between the anode and the cathode, which is created by the flow of electrons through the external circuit.
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What mass of hydrogen peroxide is required to produce 72.5 G of water the molar mass of hydrogen peroxide is 34.0147 g/mol and the molar mass of water is 18.0153 g/mol
Answers
The mass of hydrogen peroxide, H₂O₂ that is required to produce 72.5 grams of water, H₂O is 136.9 g
How do i determine the mass of hydrogen peroxide required?First, we shall write the balanced equation. This is shown below:
2H₂O₂ --> 2H₂O + O₂
Molar mass of H₂O₂ = 34.0147 g/molMass of H₂O₂ from the balanced equation = 2 × 34.0147 = 68.0294 gMolar mass of H₂O = 18.0153 g/molMass of H₂O from the balanced equation = 2 × 18.0153 = 36.0306 gFrom the balanced equation above,
36.0306 g of H₂O were obtained from 68.0294 g of H₂O₂
With the above information, we shall determine the mass of hydrogen peroxide, H₂O₂ required to produce 72.5 grams of water. Details below:
From the balanced equation above,
36.0306 g of H₂O were obtained from 68.0294 g of H₂O₂
Therefore,
72.5 g of H₂O will be obtain from = (72.5 × 68.0294) / 36.0306 = 136.9 g of H₂O₂
Thus, the mass of hydrogen peroxide, H₂O₂ required is 136.9 g
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Milk of magnesia, Mg(OH)2, is prepared from magnesium sulfate and
sodium hydroxide. If a solution containing 100.0 g of MgSO4 is added to a
solution with 70.0g of NaOH, what is the limiting reactant? Calculate the
theoretical mass of milk of magnesia produced.
MgSO4 (aq) + 2 NaOH(aq) →Mg(OH)2 (s) + Na2SO4(aq)
Answers
From the equation, MgSO₄ is the limiting reagent and the mass of Magnesium Hydroxide produced is 48.3g.
It is given that the mass of MgSO₄ is 100g and the mass of Sodium Hydroxide is 70g. Then the number of moles of Magnesium Sulfate and Sodium Hydroxide is given by,
Moles of MgSO₄ = 100/120
Moles of MgSO₄ = 0.833 mol
Moles of NaOH = 70/40
Moles of NaOH = 1.75 mol
It is given that 1 mol MgSO₄ needs 2 mol of NaOH, then 0.833mol of MgSO₄ needs 2x0.833 mol of NaOH which is given by 1.67mol. This is less than 1.75 mol of NaOH.
Thus, MgSO₄ is the limiting reagent. To find the mass of Magnesium Hydroxide the following steps are to be taken,
1mol of MgSO₄ forms 1mol of Magnesium Hydroxide
Then 0.833mol of MgSO₄ forms 0.833mol of Magnesium Hydroxide
Therefore, the mass of Magnesium Hydroxide is the product of moles and molar mass which is given by,
Mass of Magnesium Hydroxide = 0.833x58
Mass of Magnesium Hydroxide = 48.3g
Therefore the mass of Magnesium Hydroxide is 48.3g
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When all the soil pores are essentially water-filled, flow is termed _______________ .
Unsaturated
Saturated
Gravitional
Rapid
Answers
Who has course hero?I really need the “lion king…Ecology science.” Answer key so I can print it.It wont let me print mines.
Answers
Note that the above prompt on Ecology draws it's analysis form a well known story which have been told visually called "The Lion King".
The answers are:
1) Biotic Factors, simply put are living things
2 examples of things from Lion King Introduction are:
3) Abiotic factors are Non -living things.
4) Examples from the introduction are:
MountainWaterDirt5) the symbiotic relationship is called: commensalism.
What is commensalism?Long-term biological interactions known as commensalism occur when individuals of one species benefit while those of the other species suffer neither advantages nor harm.
Ecology which is the study of the environment, allows a person to comprehend how different types of creatures coexist in various kinds of physical settings.
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Full Question:
Although part of your question is missing, you might be referring to this full question:
1) What is Biotic Factors
2) List three biotic factors from the Lion King introduction
3) What is Abiotic factors?
4) List three Abiotic factors from the Lion King introduction
5) The bird riding on the tusks of the elephant feed on insects the elephant stirs up. What kind of symbiotic relationship exists between the two?
2.
Which mixture could be a useful buffer in a solution?
acetic acid (CH3CO2H) and hydrochloric acid (HCl)
sodium hydroxide (NaOH) and elemental sodium (Na)
ammonia (NH3) and ammonium chloride (NH4Cl)
acetic acid (CH3CO2H) and ammonia (NH3)
Pls answer quickly
Answers
Ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)) mixture could be a useful buffer in a solution. Option C
A buffer is a solution that can resist changes in pH when small amounts of acid or base are added. It consists of a weak acid and its conjugate base or a weak base and its conjugate acid. The buffer system works by the principle of Le Chatelier's principle, where the equilibrium is shifted to counteract the changes caused by the addition of an acid or a base.
In option A, acetic acid (\(CH_3CO_2H\)) is a weak acid, but hydrochloric acid (HCl) is a strong acid. This combination does not form a buffer because HCl is completely dissociated in water and cannot provide a significant concentration of its conjugate base.
Option B consists of sodium hydroxide (NaOH), which is a strong base, and elemental sodium (Na), which is a metal. This combination does not form a buffer as there is no weak acid-base pair involved.
Option D contains acetic acid (\(CH_3CO_2H\)), a weak acid, and ammonia (\(NH_3\)), a weak base. Although they are weak acid and base, they do not form a buffer system together as they are both weak acids or bases and lack the required conjugate acid-base pair.
Option C, ammonia (\(NH_3\)), is a weak base, and ammonium chloride (\(NH_4Cl\)) is its conjugate acid. This combination can form a buffer system. When ammonia reacts with water, it forms ammonium ions (NH4+) and hydroxide ions (OH-).
The ammonium ions act as the weak acid, while the ammonia acts as the weak base. The addition of a small amount of acid will be counteracted by the ammonium ions, and the addition of a small amount of base will be counteracted by the ammonia, thus maintaining the pH of the solution relatively stable.
Therefore, option C, consisting of ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)), is the suitable mixture that could be a useful buffer in a solution.
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What are suspensions
Answers
Answer: suspensions are a mixture in which solute particles do not disolve. An example is oil and water, oil and water or even flour and water; oil can’t disolve in water
Answer:
Noun: a mixture in which particles are dispersed throughout the bulk of a fluid.
Adjective: the state of being dispersed in a fluid.
Explanation:
I used a dictionary lol
A gas has a solubility of 33.3 g / 100 mL of liquid at 7.60 atmospheres pressure. What is the new solubility in g / 100 mL when the pressure is changed to 1.27 atmospheres?
Answers
The new solubility of the gas at 1.27 atmospheres pressure is 5.56 g / 100 mL.
To solve this problem, we can use Henry's law, which states that the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid:
S = kP
where S is the solubility of the gas, P is the partial pressure of the gas, and k is a constant that depends on the identity of the gas and the solvent.
We can use the initial solubility of 33.3 g / 100 mL and the initial pressure of 7.60 atm to solve for the constant k:
k = S/P = 33.3 g / 100 mL / 7.60 atm = 4.38 g / (mL·atm)
Then we can use the new pressure of 1.27 atm to calculate the new solubility:
S' = kP' = (4.38 g / (mL·atm))(1.27 atm) = 5.56 g / 100 mL
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why was the introduction of oxygen such a big deal?
Answers
How many grams of Aluminum Sulfate do you have if you have 2.837x10^26 atoms of Sulfur?
Apparently, the right answer is 5.373x10^4, but I do not know how to get there, please help.
Answers
The mass of Aluminum Sulfate is 5.373 grams if you have \(2.837*10^{26\) atoms of Sulfur .
The molecular formula of Aluminum Sulfate is \(Al_2(SO_4)_3.\) In one molecule of aluminum sulfate, there are 3 sulfur atoms. To calculate the mass of aluminum sulfate, follow the steps below:
Step 1: Calculate the molar mass of aluminum sulfate using the periodic table.Al = 27.0 g/molS = 32.1 g/molO = 16.0 g/mol
(2 × Al) + (3 × S) + (12 × O) = molar mass of \(Al_2(SO_4)_3.\) = 342.2 g/mol
Step 2: Find the number of moles of sulfur in the given number of atoms of sulfur.2\(2.837*10^{26\) atoms of sulfur × 1 mol S/\(6.022 * 10^{23\)atoms S = 0.0470 mol S
Step 3: Use the molar ratio of sulfur to aluminum sulfate to calculate the number of moles of aluminum sulfate.1 mol \(Al_2(SO_4)_3.\) / 3 mol S = 0.333 mol\(Al_2(SO_4)_3.\) per mol S0.0470 mol S × 0.333 mol \(Al_2(SO_4)_3.\)/mol S = 0.0157 mol \(Al_2(SO_4)_3.\)
Step 4: Calculate the mass of aluminum sulfate.0.0157 mol \(Al_2(SO_4)_3.\) × 342.2 g/mol\(Al_2(SO_4)_3.\)= 5.373 g\(Al_2(SO_4)_3.\)
Therefore, the mass of Aluminum Sulfate is 5.373 grams if you have \(2.837*10^{26\) atoms of Sulfur.
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Yolanda is focusing on eccentric contractions during her workout today. How is this MOST likely demonstrated in her workout?
Answers
Another way Yolanda may demonstrate eccentric contractions in her workout is by performing plyometric exercises that involve jumping and landing with control. These exercises require the muscles to lengthen eccentrically during the landing phase.
Finally, Yolanda may incorporate isometric holds into her workout, which require the muscles to maintain tension without changing length. Isometric holds can be used to target specific muscles and improve eccentric strength.
Overall, Yolanda's focus on eccentric contractions in her workout is likely demonstrated through exercises that emphasize slow and controlled lowering, plyometric exercises with an emphasis on landing with control, and isometric holds to improve eccentric strength.
Which of the following statements confirms the law of conservation of energy?
Answers
Statement that shows that the total energy of a system remains constant and is conserved would confirm the law of conservation of energy.
What is law of conservation?
The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another. Therefore, any statement that shows that the total energy of a system remains constant and is conserved would confirm the law of conservation of energy.
Here are some examples of statements that confirm the law of conservation of energy:
The total energy of a closed system, such as a roller coaster, remains constant as the coaster moves from one point to another. Even though the potential energy of the coaster decreases as it goes downhill and the kinetic energy increases, the total energy of the coaster (potential plus kinetic) remains constant.When a pendulum swings back and forth, the potential energy is converted into kinetic energy and back again, but the total energy of the pendulum remains constant.In a chemical reaction, the total energy of the reactants is equal to the total energy of the products. Although energy can be released or absorbed during the reaction, the total energy of the system is conserved.When a ball is thrown into the air, it gains potential energy as it rises and loses potential energy as it falls back down. However, the total energy of the ball (potential plus kinetic) remains constant, neglecting air resistance.All of these statements confirm the law of conservation of energy by showing that the total energy of a system is conserved over time.
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Complete question is: "The total energy of a system remains constant and is conserved" statement would confirm the law of conservation of energy.
Consider the following data:
HfCo2 = -393.5 kj/mol
HfH20 = -241.82 kj/mol
Hfc2h6 = -84.68 kj/mol
Using these data, calculate Delta HRXN
for this chemical reaction. Round to the nearest whole number.
2C2H6(g) + 7O2(g) -> 4CO2(g) + 6H2O(g)
Answers
Answer:
if you ask yahoo answers it will tell you
Explanation:
hope i helped
Answer:
-2856
-792
endothermic, exothermix, exothermic, endothermic
no
Explanation:
how many calories are in a snack with 175 kj of energy
Answers
Answer:
41826.05 Calories
Explanation:
1 J = 0.239006 Calories
175 KJ
= 175 x 1000 J
= 175000 J
175000 J to Calories
= 175000 x 0.239006
= 41826.05 Calories
Answer: 41.8
Explanation:
Acellus verified ✅
At 20C what is the molar mass of a gas with a denisty of 1.02g/L at 2.13atm
Answers
The molar mass of a gas with a density of 1.02 g/L at 2.13 atm and a temperature of 20°C is 47.9 g/mol.The molar mass of an element or compound is the mass of one mole of that substance. A mole is the SI unit for the amount of a substance.
It's defined as the amount of a substance that contains the same number of entities as there are atoms in 12 grams of carbon-12.Molar mass (M) = mass (m) ÷ amount of substance (n)So, M = m/n
Where m is the mass in grams and n is the number of moles. The unit of molar mass is grams per mole (g/mol).
The ideal gas law is used to calculate the molar mass of a gas. The ideal gas law is:P V = n R T,Where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.
Convert the density to grams per liter: 1.02 g/L.
The density is mass/volume, thus 1.02 g/L means that 1 liter of the gas weighs 1.02 g.
This means that 1 mole of gas will occupy 22.4 L (at standard temperature and pressure, STP).Calculate the number of moles of gas using PV = nRT.P = 2.13 atmV = 22.4 L (at STP)R = 0.0821 L·atm/K·molT = 273.15 K + 20 K = 293.15 K
Thus, n = PV/RT = (2.13 atm × 22.4 L)/(0.0821 L·atm/K·mol × 293.15 K) = 0.973 mol
Calculate the molar mass (M) using M = m/n.m = density × volume = 1.02 g/L × 22.4 L = 22.848 gM = m/n = 22.848 g/0.973 mol = 23.5 g/mol Convert to units of grams per mole: 23.5 g/mol
The molar mass of a gas with a density of 1.02 g/L at 2.13 atm and a temperature of 20°C is 47.9 g/mol.
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An unknown hydrocarbon compound was analyzed for hydrogen by elemental analysis and results show that it contains 15.88 % H. What is the empirical formula
Answers
Answer:
C4H9
Explanation:
If H = 15.88%
Then C = 100.00 – 15.88 = 84.12
Divide each % value by respective atomic mass
H = 15.88/1 = 15.88
C = 84.12/12 = 7.01
Divide through by smaller value
H = 15.88/7.01 = 2.26
C = 7.01/7.01 = 1
Remove fraction , multiply by 4
H = 9
C = 4
Empirical formula = C4H9
The hydrocarbon could be ( C4H9)2 = C8H18 = octane.
Calculate the initial rate for an experiment where both I2
and OCl2 are initially present at 0.15 mol/L.
Answers
When both I2 и OCl2 are present in 0.15 mol/L at the beginning of the experiment, the starting rate is roughly 0.004 M/s.
Provide a concrete illustration of an experiment.An experiment is described as "a test under controlled circumstances that is made to explain a known truth, to examine the validity of a theory, or even to determine the efficacy from something yet untried" on the inside of the American Heritage Dictionary on the English Language.
How might an experiment be described?If you sprinkle a plant with water, will it grow more effectively? Compare the plant's development before and after spraying it to get a sense of how it is developing without it.
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What happens to a glass of sugar solution when sugar is added to it?
Answers
Answer:
Concentration of the sugar in the solution increases
Answer:
The sugar molecules will begin to crystallize back into a solid at the least provocation
Which of the following statement is correct A.proton number of isotopes of an element is same B.proton number of elements are different C.mass number of isotopes and average atomic mass of elements are different D.all of these
Answers
The correct statement is Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons.
What are isotopes?In a simple way to explain, Isotopes are species that have the same atomic number and mass number.
In this case, we can say that the correct statement is proton number of isotopes of an element is same.
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To determine a covalent compound formula from a compound name, start by________for each element in the compound. Then, use the_______to determine the subscripts necessary to_______.a. create a formula unit with no net charge. b. make a symmetrical arrangement of atoms.c. match the number of each element in the name.
Answers
Answer:
c. match the number of each element in the name.
Explanation:
For making the formula of covalent compound, we must write the symbol of the first element of covalent compound and then write the name of the second element and add the suffix with the symbol of second element. Also put the number of each element with the name which indicates the quantity of elements that take part in forming new covalent compound.
Drag each positive ion to bond it with a negative ion to form the neutral ionic compound indicated.
Answers
Answer:
1. NaCl
2. NH4F
3. MgO
4.LiCl
5. KI
6. CaO
Explanation:
In that order
Joseph has hypothesized that sound travels in waves. If he were following the scientific method, what should he do next?
Answers
The following in the scientific method after the hypothesis is hypothesis testing which is carried out by experimental and or observation procedures.
What is the process of the scientific method?The process of the scientific method involves a series of well-detailed steps to collect scientific empirical evidence, which is characterized to have data that can be tested by experimentation or observation.
The process of scientific method starts with the observation of the natural world, which leads us to raise a question that must be answered by a plausible explanation called a hypothesis. Finally, we can prove those hypotheses by using experiments to collect info and results.
Therefore, with this data, we can see that the process of the scientific method involve the application of experimentation and or observational procedures to test hypothesis and this confirm or reject their assumptions.
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How many grams of solid potassium chlorate (KCIO3) decompose to form solid
potassium chloride and 790 mL of oxygen gas at 111 °C and 770 torr? (3 sf)
Answers
Answer:
1.95 g KClO3
Explanation:
We're asked to find the mass, in g, of KClO3 that decomposes to give a certain amount of O2.
Let's use the ideal gas equation to find the moles of O2 that form.
P=747torr(1latm760torr)=0.983 atmV=797mL(1lL103mL)=0.797
LT=128oC+273=401 KPlugging in known values, we haven=PVRT=(0.983atm)(0.797L)(0.082057L∙atmmol∙K)(401K)=0.0238 mol O2
Now, we'll use the coefficients of the chemical equation to find the relative number of moles of KClO3 that reacted:0.0238mol O2(2lmol KClO33mol O2)=0.0159 mol KClO3
Finally, we'll use the molar mass of potassium chlorate (122.55 g/mol) to find the number of grams that reacted:
0.0159mol KClO3(122.55lg KClO31mol O2)=1.95 g KClO3
What happens to the amount of solution when we add food colour to it?
Answers
Answer:
We need more? What else is in the question? This is unanswerable.
Explanation:
what are 4 sources of electrical energy?
Answers
Answer:
Clean Energy. Learn more about energy from solar, wind, water, geothermal, biomass and nuclear. Fossil. Learn more about our fossil energy sources: coal, oil and natural gas.Electric Power. Learn more about how we use electricity as an energy source. Energy Storage. Hydrogen & Fuel Cells.Explanation:
I hope this helps xD
Answer:
Electrical energy is used to power up a light bulb. The current moves from the outlet to the light bulb through the wire.
Lightning is another example of electrical energy. The negatively charged particles are separated from the positively...
Batteries are also sources of electrical energy. In car batteries, the moving charges Explanation:
fI gave u 3 think of the 4th one
chef needs to increase the temperature of a food dish. She thinks she can do this by stacking another dish on top of it. She has three dishes to choose from for the top dish: A, B, and C.
Which one of these dishes would make the food dish the warmest when placed on top of it? As part of your answer, explain how the energy and temperature of both the top dish and the food dish will change when the food dish warms up, and why.
Answers
Answer:
C)Because of high energy it produces high thermal energy (heat) resulting in increase in temperature of food dish.
HOPE THAT HELPS!!
Explanation:
C)Because of high energy it produces high thermal energy (heat) resulting in increase in temperature of food dish.
HOPE THAT HELPS!!
The height of three peaks; A, B, and C obtained in a gas chromatogram are 25.1 mm, 14.5 mm and 37.1 mm. The width of the peaks, at half height, are 4.6 mm, 4.4 mm and 5.9 mm, respectively. Calculate the percentage composition of A in the sample.
Answers
Answer: Percentage Compositon Of A in the sample= 28.99%
Explanation:
First we calculate the Peak area.
Because each peak is consdered like a triangle in a Chromatogram, The Area of the peak is calculated as = height x half height of the width
Area of Pea A= 25.1 mm X 4.6mm=115.46mm2
Area of Peak B= 14.5mm x 4.4mm=63.8mm2
Area of PeaK C= 37.1mm x5.9mm =218.89mm2
Total Peak Area= 398.15mm2
Percentage Area of Peak A = Area of Peak A/Total Peak Area x 100
= 115.46 / 398.15 x 100
=0.2899 x 100
=28.99%
Percentage Compositon Of A = 28.99%