Naturally occurring neon exists as three isotopes. 90.51% is Ne-20 with a mass of 19.99 amu, 0.27% is Ne-21 with a mass of 20.99 amu, and9.22% is Ne-22 with a mass of 21.99 amu. What is the atomic mass of neon? O 20.18 amu O 62.97 amu O 10.00 amu O 20.99 amu

Q: What are acids often using in measuring alkalinity.

A: H2SO4 and HCI used in measuring alkalinity. Because the sulfuric acid and hydrochloric acid is stron...

Q: concentration o

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Q: 2. Carefully draw the structures of the models that you have made using proper stereochemical notati...

A: Isomers having non- superimpossible mirror image relationship, called enantiomers.  Isomers having s...

Q: Antimony, Sb has 2 isotopes and an atomic weight of 121.75 amu. The isotope anitimony-121 has a natu...

A: Given percentage abundance  Sb-121 = 57.25℅ Sb-123 = 41.75℅ Mass of Sb-123 = 122.9041 amu atomic mas...

Q: A solution contains 6.56 g of KCl per 100 g of water at 30 °C. KNO, NANO, 100 CaCl, Pb(NO,), 90 - Us...

A: Saturated solution is the solution in which no more solute can be dissolved at the same temperature....

Q: N. 'N. N. Z-

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Q: `CH3 H `CH3 :Z-I

A: Given : We have to explain why A is more acidic than D.

Q: For the following compounds; CH3 Cl. H CH3 CIF H. H CI J K i) Assign (R) or (S) designation to each ...

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Q: What is the osmotic pressure of a solution that contains 25.9 mg of glucose (180.156 g/mol) in 75.0 ...

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Q: ОН ОН H. HO, Но но i) Draw a Fischer projection. ii) From the Fischer projection in question (a) i),...

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Q: For the reaction below, the equilibrium constant is Kc =3.2× 10-10 at 25 °C. %3D Pb(s) + 2 Cr3*(aq) ...

A: The equilibrium reaction given is, Given: Kc = 3.2 × 10-10  And initial concentration of Cr3+ = 1.6...

Q: Methods in precipitation titration are. Two. O Four. Three.

A: A precipitation titration is the one in which the formation of precipitate takes place during the co...

Q: solution is prepared by dissolving in 3.00 g of naphthalene ( C10H8 ) in 20.0 g of  benzene ( C6H6)....

A: Freezing point depression and boiling point elevation property of solution are colligative property ...

Q: molar mass

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Q: How many mL of 0.300 M NaCl solution are required to produce 0.210 moles of NaCl?

A: No. Of moles=molarity*volume Hence, 0.210=0.3*V.                   V= 0.7 L  

Q: scandium(III) zinc (II) hydrogen carbonate cyanide lead (II) nitrate is mixed with a solution of sod...

A: A balanced chemical equation occurs when the number of the atoms involved in the reactants side is e...

Q: What are acids often using in measuring .alkalinity H2S04 and HNO3. H2S04 and HCI. H2S04, HCI and HN...

A: Given question is :  What are acids often using in measuring alkalinity ?  Options are :  a). H2SO4 ...

Q: Which element in the periodic table has a specific heat of 0.099 Pick the closest if needed

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Q: The reaction of nitrogen dioxide with fluorine 2 NO2 + F2-2 NO,F is first order in NO, and first ord...

A: The sum of the exponent term in the rate law for a chemical reaction is known as the order of the re...

Q: Consider the following reaction. 2 NO, (g) = N,0,(g) When the system is at equilibrium, it contains ...

A: The answer is as follows:  

Q: ou may change your response by submitting again. ropose a method that will be successful in producin...

A: Given : We have to make product for the following reaction.

Q: H-C-H HHH H-C-C-C-C-H C=C=c-ċ-c-H H HH 普 H-C-H H н-с-с-с-н H-C-H H н-с-н H-C-C-C-H HHH b. d. CH

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Q: The aquation of tris(1,10-phenanthroline)iron(II) in acid solution takes place according to the foll...

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Q: .How many types of hardness Two. O Three. O Four. O

A: There are two types of hardness, Temporary hardness Permanent hardness

Q: Usage of synthetic colors has been restricted to a maximum limit of 199-200 ppm: a. True b. False So...

A: Usage of synthetic colors has been restricted to a maximum limit of 199-200 ppm: a. True b. False Go...

Q: Which of the following ionic compounds has the largest lattice energy? Select an answer and submit. ...

A: The stronger the attraction between cation and ions the larger the lattice energy.  The force of att...

Q: Specify the types of strain that destabilize the conformer shown below. Hint: All bonds not explicit...

A: The given structure is the most stable chair conformer of a cyclohexane ring, where all the bonds ar...

Q: C: Determination of K, for a Weak Acid Volume Used(Liters) Moles 0.1 M HC,H,O, 0.0269 (L) HC,H,O, [N...

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Q: (NH,)OH HCI sodium fluoride lithium bromide ammonium sulfate calcium nitrate magnesium phosphate pot...

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Q: Ca+2 = 36.8mg/L Mg+2 = 2.9mg/L HCO3 = 98mg/L pH = 7.53 Temp = 9 degree Celsius C...

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Q: 1. What is the pH of a water that contains 120 mg/L of bicarbonate and 15 mg/L of carbonate ions?

A: Given: Concentration of bicarbonate i.e. HCO3- = 120 mg/L. And concentration of carbonate i.e. CO32-...

Q: 2 N2O5(g) → 4 NO2(g) + O2(g) If the rate of disappearance of N2O5 is equal to 3.20 mol/min, what is...

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Q: Diamond, lattice constant (a) = 0.3567 nm, shares the same crystal structure as Si, FCC with lattice...

A:  X-ray diffraction is commonly used as a non-destructive method of studying carbon materials and oth...

Q: What mass of sodium acetate must be added to 435 mL of water to give a solution with pOH = 4.65? Kb ...

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Q: PART A: For each of the following structural diagrams, circle (or highlight) and name the functional...

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Q: Calculate the boiling point of a solution containing 25.0g of urea, (H2N)2CO(s), dissolved in 1.50kg...

A: Given, Mass of urea = 25.0 g Mass of nitrobenzene = 1.50 Kg The boiling point elevation constant (Kb...

Q: What is the melting point of a solution prepared by dissolving 25.0 g of KBr (Mm = 119.00 g/mol) in ...

A: Colligative properties: The colligative properties are those properties of solutions that depend on ...

Q: The indicator of Moher regent is. KMN04. О Ксго4.

A: Mohr's method: Mohr's method is a direct method of titration. In this method potassium chromate (KCr...

Q: Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free ener...

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Q: Alkalinity understand that is. Measure of acidity. Measure of basicity. Measure of nationalize.

A: Alkalinity understand that is measure of basicity 

Q: How many clarification of water. O Three. O Two. O Four.

A: The types of water clarifiers  is given below

Q: Hydrochloric acid is sold as a concentrated aqueous solution of HCl with a density of 1.18 g/mL. The...

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Q: ng complex ions.

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Q: Cyclohexane derivatives exist primarily in the most stable of the available chair conformations. Giv...

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Q: Predict the ionic charge for a phosphorus ion, P?–, based on the position of the element in the peri...

A: Predict the ionic charge for a phosphorus ion, P?

Q: Why is understanding reaction rates significant?

A: To explain: Why is understanding reaction rates significant?    

Q: A first-order reaction has a rate constant of 1.10 x 10-4 s-1 at 470°C and 5.70 x 10-4 s-1 at 500°C....

A:

Q: Complete the following solubility constant expression for Fe(OH),. K sp

A: Given Fe(OH)2

Q: ASSESSMENT Look for at least 5 examples of covalent compounds that can be found in nature or used in...

A: When 2 or more elements combine chemically in a fixed mass ratio, the resulting product is called as...

Q: How many ions metals are measuring in water alkaline.

A: In this question we have to select correct option of  how many ions metals are measuring in water al...

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.