Question is in the image

Question Is In The Image

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Answer 1

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, the given figure represents the atom.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron.

The circles that are in center represents nucleus. The two bigger circles represents orbitals. The cross sign represents electrons. The outermost bigger circle represents the valence shell and the electron in this shell represents the valence electron.

Therefore, the given figure represents the atom.

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Related Questions

Consider the plots given below, for the type of reaction nA→B+C. These plots correspond to the reaction orders respectively:O 0,1,2O 1,2,0O 3,2,1O 1,0,2

Answers

0th order: The concentration of reactant A is not plotted on the x-axis, indicating that the reaction rate is not dependent on the concentration of A.
1st order: The concentration of reactant A is plotted on the x-axis, indicating that the reaction rate is dependent on the concentration of A.
2nd order: The concentration of reactant A is plotted on the x-axis, and the plot is a straight line, indicating that the reaction rate is dependent on the square of the concentration of A.
3rd order: The concentration of reactant A is plotted on the x-axis, and the plot is a curve, indicating that the reaction rate is dependent on the cube of the concentration of A.

a lewis structure for the acetate ion is shown here: the ion is ch3co with an o atom double-bonded to the second (from left to right) carbon. the double-bonded o atom has two lone pairs. the other o atom has three lone pairs. the overall charge of the ion is 1 minus. which structure is the best resonance structure for the acetate ion?

Answers

A lewis structure for the acetate ion is included the carbon hydrogen and the oxygen atom . the one oxygen atom is doubly bonded with the carbon atom and one is single  bonded with negative charge.

The acetate ion included the carbon hydrogen and the oxygen atom . the lewis structure of acetate ion is one O atom double-bonded to the carbon. the double-bonded O atom has two lone pairs. the other O atom has three lone pairs and  -1 negative charge.

The valence electron of the C atom  = 8

The valence electron of the H atom = 3

The valence electron of the O atom = 12

The total number of the valence electrons of the CH₃CO⁻ is = 24

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Classify the components as most accurately describing cofactors, coenzymes, or neither. Cofactors Coenzymes Neither ascorbic acid

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Ascorbic acid can be defined as an electron donor and therefore it functions as a cofactor for diverse chemical reactions.

What is a cofactor of diverse chemical reactions?

A cofactor of diverse chemical reactions can be defined as a non protein compound that is required for the enzyme, i.e., by the protein, in order ti can function normally such as occurs with ascorbic acid for many diverse chemical reactions that involve metabolic pathways in mammalian cells.

The cofactors are molecules that provide the required for the enzyme to function such as an electron donor required to the forming of the enzyme-substrate complex during anabolic pathways.

Therefore, with this data, we can see that a cofactor of diverse chemical reactions is able to provide the enzymes the help in order to carry out chemical reactions such as the conversion of one substrate to a product.

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What is mechanical advantage? A. output work divided by input work. B. Input work divided by output work. C. Input force divided by output force. D. Output force divided by input force. please help!! If you answer correctly i'll give you 5 stars!!

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Output force divided by input force is the mechanical advantage.

Why is it referred to as mechanical advantage?

A tool, mechanical device, or machine system's ability to amplify force is known as its mechanical advantage. The system simply balances forces against movement in order to achieve the desired output force amplification while maintaining the input power. The law of the lever can be used as an example for this.

Levers and pulleys are examples of simple machines that use mechanical advantage, a measurement of the ratio of output force to input force in a system.

A calculation known as a mechanical advantage quantifies the amplified force that a mechanical system absorbs. It provides the ratio of force applied to the load to force required to overcome that force. Since the two ratio quantities are the force, the expression has no units.

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what mass of sodium phosphate would have to be added to 2.0 l of this solution to completely eliminate the hard water ions? assume complete reaction.

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14.2g  mass of sodium phosphate would have to be added to 2.0l of this solution to completely eliminate the hard water ions.

To solve this question we need to find the moles of Ca2+ and Mg2+ ions. And based on the reactions: 3Ca2+ + 2PO4 Ca(PO4)2 (S)

3Mg2+ + 2PO42 → Mg3(PO4)2 (S)

we can find the moles of phosphate required to precipitate all these ions and its mass: Moles Ca2+1.OL* (0.055mol/L) = 0.055mol ,Moles Mg2+: 1.OL * (0.075mol/L) = 0.075mol

Total moles = 0.13 moles of ions, Moles of phosphate ion required: 0.13 moles (2 moles PO,3 moles ions) = 0.0867 moles PO43-

The moles of sodium phosphate (Na3PO4) are =

0.0867 moles. The mass is -Molar mass Na3PO4: 164g/mol-:0.0867 moles Na3PO4* (164g/mol) =

14.2g of sodium phosphate are required

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Victor put a match on a balance and found that its mass was 6.0 grams. Then he lit the match and put it out after a few seconds.



He put the partially burned match on the balance again. This time, its mass was 4.5 grams.

Which of the following best explains what happened as the match burned?
A.
Some of the matter changed from solid to gas and went into the air.
B.
The matter moved to a different part of the match.
C.
Some of the mass was destroyed by the fire.
D.
The mass of the match combined with the mass of the fire.

Answers

Place the cursor at the start of the text, then press CTRL+SHIFT+DOWN ARROW. Press CTRL+SHIFT+UP ARROW after advancing the cursor to the end of the paragraph. The Correct option is B.

How do you move the first sentence to the end of the paragraph in Word?The Ctrl+A keyboard shortcut in Word allows you to select all text in a document, and you can also use the mouse or keyboard to pick out individual words or objects from tables. Text or objects that are located in various locations can also be chosen. You can choose, for instance, a sentence from one page and a paragraph from another.The entire textIn the document, click anywhere.You can pick every word in the document by pressing Ctrl+A on your computer.The particular wording you wantAdditionally, you have the option of choosing a specific word, line of text, or one or more paragraphs.Your cursor should be placed in front of the first letter of the word, sentence, or paragraph you want to pick.To pick a text block, click and hold while dragging the cursor over it.Other options for selecting textQuickly click and drag the mouse over a word to choose it.By positioning your cursor at the beginning of a line of text and pressing Shift + down arrow, you can pick that line of text.Put your cursor at the beginning of the paragraph, then hit the down arrow while holding down the Ctrl and Shift keys to select the paragraph.

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Which two bonds are least similar in polarity?

Select one:
a. I-Br and SiCl
b. B-F and Cl-F
c. C-Cl and Ge-Cl
d. O-F and Cl-F
e. Ga-Cl and I-Br

Answers

Answer:

Explanation:

hooki

A 75 mL sample of He gas is at 97°C and 0.975 atm. If the sample is cooled to 29°C and the pressure is increased to 1.25 atm, what will the new volume be?​

Answers

2194.14is the new volume .These laws are described by equations that are variations on the ideal gas law, PV is nRT

How would you determine the volume, temperature, pressure, and amount of gas in a sample under the circumstances?These laws are described by equations that are variations on the ideal gas law, PV = nRT, where P is the gas's pressure, V is its volume, n is the number of moles in the gas, T is its kelvin temperature, and R is the ideal (universal) gas constant.The ideal gas law, PV = nRT, should be reviewed first. P is the ideal gas constant, V the volume in liters, n the number of particles in moles, T the temperature in Kelvin, and n the number of atmospheres in this equation (0.0821 liter atmospheres per moles Kelvin).These laws are described by equations that are variations on the ideal gas law, PV = nRT, where P is the gas's pressure, V is its volume, n is the number of moles in the gas, T is its kelvin temperature, and R is the ideal (universal) gas constant.

Explanation:

The ideal gas law, PV = nRT,

97 * 0.975*29 = 2742.675/1.25 = 2194.14.    

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What makes a field forever unique?

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From cotton fields to corn stalks, if this is what you mean, a forever field is unique in its own way by keeping all types of plants in the field. They are all different in how they grow and what they do.


8) Is there more gravitational force on the earth or moon? Why?

Answers

Answer:

Explanation:

So, to begin answering your question, Earth has a greater gravitational pull than the moon simply because the Earth is more massive. The moon's gravitational pull also affects Earth, though; the rising and falling of the tides are an effect of the moon's gravity.      HOPE THIS HELPS ^^

a mixture of nabr and na2so4 contains 29.96 percent na by mass. calculate the percent by mass of each compound in the mixture

Answers

The percent by mass of each compound in the mixture is 24.04% NaBr and 75.96% Na₂SO₄.

Percentage by mass, mass %, is a measure of concentration that indicates the mass of solute per mass of solution. In other words, the mass percent of a component in the solution is defined as the ratio of the mass of the component to the mass of the solution, expressed as a percentage.

mass % = (mass of solute / mass of solution) x 100

In the case of a mixture of NaBr and Na₂SO₄ that contains 29.96% Na by mass, assume 100 g of the mixture.

Let x = mass of NaBr

100 - x = mass of Na₂SO₄

29.96 g = mass of Na in NaBr + mass of Na in Na₂SO₄

29.96 g = (mass of NaBr)(mass % Na in NaBr/100) + (mass of Na₂SO₄)(mass % Na in Na₂SO₄/100)

29.96 g = (x)(22.989769/102.893769) + (100 - x)(2 · 22.989769/142.040538)

29.96 g = 0.2234320817x + (100 - x)(0.3237071518)

29.96 g = 0.2234320817x + 32.37071518 - 0.3237071518x

0.3237071518x - 0.2234320817x = 32.37071518 - 29.96

x = 24.04102213

100 - x = 100 - 24.04102213 = 75.95897787

mass % NaBr = (mass of NaBr / mass of mixture) x 100

mass % NaBr = (24.04102213 / 100) x 100

mass % NaBr = 24.04102213

mass % Na₂SO₄ = (mass of Na₂SO₄ / mass of mixture) x 100

mass % Na₂SO₄ = (75.95897787 / 100) x 100

mass % Na₂SO₄ = 75.95897787

Hence, the mass % of each compound is 24.04% NaBr and 75.96% Na₂SO₄.

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7. during a recrystallization, the dissolved compound is sometimes treated with activated carbon, why?

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during a recrystallization, the dissolved compound is sometimes treated with activated carbon because Activated charcoal is carbon treated with oxygen making it highly absorbent .

Activated carbon is carbon treated with oxygen and has excellent adsorption power. Crystallization helps remove impurities, but charcoal removes all impurities during the process, so the crystals that form are completely pure.

Recrystallization is a chemical refining technique. When a mixture of compound and impurity is dissolved in a suitable solvent, either the compound of interest or the impurity is removed from the solution while the other remains. It is named for the crystals that often form when compounds fail. Alternatively, recrystallization may refer to the spontaneous growth of larger ice crystals at the expense of smaller ice crystals.

Recrystallization is the process of purifying compounds. The most typical situation is when the desired "Compound A" is contaminated with a small amount of "Impurity B". There are several purification methods that can be tried (see Separation Methods), recrystallization being one of them.

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which scientist helped develop the current model of the atom which states that electrons are located in regions known as orbitals of electron clouds?

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Neil Bohr is a scientist who worked on the present theory of the atom, which states that electrons are found in areas called orbitals of electron clouds.

According to Bohr electrons can be passed into various orbits, with the input of energy. When the energy is taken away, the electrons return to their ground state and release a photon, a unit of energy, with a proportional quantity of energy. This served as the foundation for the development of quantum theory. For Bohr's studies the emission spectra of hydrogen served as the main inspiration. The atomic planetary model is another name for this. It clarified how the hydrogen atom functions inside. The electrons in this atomic model, which was the first to apply quantum theory, were constrained to particular orbits around the nucleus. In order to explain the spectral lines of hydrogen, Bohr employed his model.

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Ren runs a hamburger stand and needs to clean up a season’s worth of grease buildup on the range hood over his griddle. Explain what he should look for in a cleaning product that can handle a layer of grease. what is this

Answers

To clean away a season's worth of grease buildup, Ren, who owns a hamburger business, would need to use those caustic chemicals, which are the type of cleaning product to look for.

Explain use of caustic chemicals.

One of caustic chemicals' primary applications is cleaning drain pipes. It can also be used to create soap and detergents, unclog drains, and remove grease buildup from ovens. Given all of its functions, it is a useful item to have about the house. Chlorine bleach is made by mixing sodium hydroxide with chlorine in a manufacturing process.

To dissolve the grease, these caustic chemicals might be used. Hot water can be used to rinse the grease once it has been broken down. To soften the grease buildup, these chemicals should be given time to sit on the grease's surface.

Ren ought to make use of a base-containing cleaning solution. This is because lipids, the type of chemical that makes up grease, react well with bases. Using a base, the grease would be broken down to create soap, which would then

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potassium dichromate, k2cr2o7, is used in tanning leather, decorating porcelain, and water proofing fabrics. calculate the number of chromium atoms in 78.82 g of k2cr2o7..

Answers

The number of chromium atoms present in 78.82 g of potassium dichromate are 2.98×[tex]10^{23}[/tex]

Molecular mass is the molar mass, or M, is a physical characteristic in chemistry that is defined as the mass of a particular substance divided by the quantity of that material. For molar mass, the fundamental SI unit is kg/mol. One mole is a collection of 6.022 ×10²³ particles, be the atoms, molecules, ions , electrons, photons or any other things. This value of 6.022 ×10²³ is the Avogadro's number.

1 mole [tex]K_{2}Cr_{2}O_{7}[/tex] = 294.18 g    [tex]K_{2}Cr_{2}O_{7}[/tex] contains 2 moles Cr = 2×6.023 × [tex]10^{23}[/tex]Cr atoms.

So, 72.8g [tex]K_{2}Cr_{2}O_{7}[/tex] contains (72.84/294.18)×2×6.023×[tex]10^{23}[/tex] Cr atoms

= 2.98 × [tex]10^{23}[/tex]

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how does an atom of nirogen become an ion

Answers

Answer: A nitrogen atom must gain three electrons to have the same number of electrons as an atom of the following noble gas, neon.

Explanation:

assume there exists some hypothetical metal that exhibits ferromagnetic behavior and that has 1 simple cubic crystal structure, and atomic radius of 0.130 nm and a saturation flux density of 0.75 tesla. determine the number of bohr magnetons per atom for this material

Answers

The number of bohr magnetons per atom for this material is 1.14 when some hypothetical metal that exhibits ferromagnetic behavior and that has 1 simple cubic crystal structure.

Given atomic radius of crystal structure (r) = 0.130nm

saturation flux density of crystal structure = 0.75tesla

We know that n = M/µN = B/µ0µN

n = BVc/µ0µN where Vc is the volume of crystal and B is bohr magneton

n = B(2r)^3/µ0µN = 0.75x(2x0.130x10-9)^3)/(1.25x10-26x9.27x10-24)

n = 13.18x10-30/11.5x10-50 = 1.14x10^20

Hence the number of bohr magnetons per atom for this material is 1.14 .

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What is the correct coefficient of MgCl2

Answers

Answer: The answer is one

Explanation: There is a invisible 1 in front of the Mg.

which set of elements is arranged in order of increasing electronegativity? which set of elements is arranged in order of increasing electronegativity? ga < ge < p < n p < n < ge < ga ge < n < ga < p n < p < ge < ga

Answers

The electronegativity is n < p < ge < ga.

What is electronegativity?

Electronegativity is a measure of an atom's ability to attract electrons when it forms a chemical bond with another atom. It is based on the Pauling Scale, which assigns values to elements based on their tendency to attract electrons when they form bonds. Electronegativity increases from left to right across the periodic table, and increases from the bottom to the top of the periodic table.

The correct answer is n < p < ge < ga. This is because electronegativity increases as we move down a group in the periodic table and from left to right across a period.
Therefore, the element with the highest electronegativity is at the bottom right corner of the periodic table, which is gaseous, followed by Germanium, Phosphorus, and then Nitrogen.

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Which characteristic does inertia describe? responses how long an object is how long an object is how large an object is how large an object is how fast an object is moving how fast an object is moving how difficult it is to change an object's motion

Answers

Option C, Inertia describes how difficult it is to change the motion of an object.

What is meant by Inertia?The Latin term inerus, which meaning inert or slow, is where the word inertia originates. It may also refer to an object's resistance to a change in velocity.An object is said to have inertia if no external force forces it to change its speed or direction from its current state. Newton's first law of motion included a description of the concept of inertia. It is a propensity to do nothing or to do nothing different.Unless acted upon by an unbalanced force, an object remains at rest and an object in motion will remain to move at a constant speed and in a straight line. This is known as Newton's first law of motion (inertia).

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write a paragraph using the words atom, element, compound, and mixture.

Answers

An atom is the smallest part of an element that can exist. Compounds are formed from elements by chemical reactions. Compounds contain two or more elements chemically combined in fixed proportions and can be represented by formulae using the symbols of the atoms from which they were formed.

before glass electrodes and ph meters became widely used, ph was often determined by measuring the concentration of the acid and base forms of the indicator colorimetrically. if bromothymol blue is introduced into a solution and the concentration ratio of acid to base form is found to be 1.36, what is the ph of the solution? ph

Answers

In this theory, acidity is defined by the concentration of hydrogen ions: the greater the concentration, the more acidic a solution. The measure used is the pH—potential of hydrogen—scale, developed in 1909. The pH scale has values ranging from 0 (extremely acidic) to 14 (extremely alkaline).

To trace the pH scale, a group of standard solutions whose pH has been established by international agreement can be employed. The potential difference between a hydrogen electrode and a standard electrode, such as the silver chloride electrode, is measured using a concentration cell with transference to obtain the primary pH standard values. The pH of aqueous solutions can be measured using a glass electrode, a pH metre, or a color-changing indicator. pH measurements are important in many fields, including chemistry, agronomy, medicine, water treatment, and many more.

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CAN ANYONE TELL THE ANSWER

Answers

When water falls from great heights, its potential energy transforms to kinetic energy and this energy is converted electrical energy by power generators which produce a heat energy also. Thus, option b is correct.

What is energy transformation?

One form of energy can be transformed to the other form naturally or mechanically. When a body is at rest, it possess potential energy. When it starts to move potential energy convert to kinetic energy.

When water falls from great heights it acquires more kinetic energy and it can be converted to electrical energy using turbines where some energy is lost as heat energy.

Therefore, the heat energy produced by the mechanical work of the turbine make the water heated. Hence, option b is correct.

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how many electrons must hte atoms of the elements below share with other atoms in covalent bonding to achieve an octet of electrons?

Answers

Answer:.....:

Explanation:

assume there exists some hypothetical methat that exbihits ferromagnetic behavior and that has 1 simple cubic crystal strecutre, and atomic radius of 0.130 nm and a saturation flux density of 0.75 tesla. determine the number of bohr magnetons per atom for this material

Answers

When compared to a hypothetical ferromagnetic metal with a single simple cubic crystal structure, this substance possesses 1.14 bohr magnetons per atom.

Given that the cubic crystal  atomic radius (r) is 0.130 nm

crystal structure's saturation flux density is equal to 0.75 tesla.

We are aware that n = M/N = B/0N.

n = BVc/0N, where BVc is the bohr magneton and Vc is the volume of the crystal.

N = 0.75x(2x0.130x10-9)3)/n = B(2r)3/0 (1.25x10-26x9.27x10-24)

n = 13.18x10-30/11.5x10-50 = 1.14x10^20

Therefore, this cubic crystal substance has 1.14 bohr magnetons per atom.

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what is the solubility (in moles/liter) of pbcl2 in a solution that is 0.15 m solution in hcl? (ksp pbcl2

Answers

the solubility (in moles/liter) of pbcl2 in a solution that is 0.15 m solution in hcl? (ksp pbcl2

Solubility of PbCl2 = 7.11×10−4 mol⋅L−1

The maximum amount of a chemical that will dissolve in a given amount of solvent at a given temperature is referred to as its solubility. Varying compounds have very different solubilities, which is a characteristic of a particular solute-solvent pair.What is solubility, for instance?

A typical illustration of a solution is the addition of sugar cubes to a cup of tea or coffee. Solubility is a quality that aids in the dissolution of sugar molecules. Thus, the ability of a substance (solute) to dissolve in a specific solvent can be defined as solubility.

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3. Which hereditary disease results in difficulties with breathing and with digesting food?
muscular dystrophy
hemophilia
O
Down syndrome
cystic fibrosis

Answers

Answer:

cystic fibrosis

Explanation:

The cells that make mucus, perspiration, and digestive fluids are impacted by cystic fibrosis. These fluids start to thicken and cling together as a result. They then block off all of the tubes, ducts, and passages.

For 55.0seconds, Trevor was hang gliding at a constant velocity. In that time, he moved 583meters to the southeast, and a flock of Canada geese flew past him at 17 meters per second. What was Trevor's velocity?

Answers

The velocity of the Trevor is equal to 10.6 m/s.

What is velocity?

Velocity is a vector quantity and can be defined as the change in position of the object (∆x) divided by the time intervals (∆t) in which it takes place. The velocity can be positive or negative and the S.I. unit is m/s.

The velocity of the object = ∆x/∆t

Given, the distance covered by Trevor = 583 m

The time is taken by Trever to cover this distance, t = 55 s

The  Trevor's velocity = 583/55 = 10.6 m/s

Therefore, the velocity of the Trevor is 10.6 m/s, and therefore the flock moves at 17 m/s past him.

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What element could react with nitrite to form an ionic bond?

Answers

Ionic molecules known as salts of nitrous acid include the nitrite ion, NO-2, and a positive ion, such Na+ in sodium nitrite (NaNO2)

What does possessing nitrites in your urine mean?

So, if your urine contains nitrites, you probably have an urinary tract infection. (UTI). One of the most prevalent types of illnesses, particularly among women, is the UTI. Most UTIs damage the urethra and bladder (the tube that carries urine out of your body). Luckily, the majority of UTIs are not dangerous.

How can nitrites in urine be eliminated?

Just when you have an urinary infection do you get nitrates in your urine, or nitrituria (UTI). Nitrites are found in the urine during urinalysis. UTI-causing bacteria are eradicated by antibiotics.

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The chemical formula for barium oxide is BaO.
A chemist determined by measurements that 0.085 moles of barium oxide participate in a chemical reaction. Calculate the
mass of barium oxide that participates.
Round your answer to 2 significant digits.

Answers

Answer: 9.97 g (corrected to 3 significant figures.)

Explanation:

mass = no. of moles x molar mass

Atomic mass of Barium = 137.327; oxygen = 15.999,

so the molar mass of BaO = 137.327 + 15.999

=153.326

Hence, the mass is

0.065 x 153.326

=9.97 g (corrected to 3 significant figures.)

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