Element Name Osmium Barium Atomic symbol Os 3+ Mass number 140 Protons 14 Neutrons 111 15 Electrons

Q: A 50ml aliquot of a 0.1 M solution of a neutral drug was extracted with 2 x 5 ml ethyl acetate. The…

A: Given that the concentration of the drug in aqueous phase is 0.1 M.

Q: What are the precipitates that were produced during the calcium and chloride ion test? Write the…

A: Precipitation reaction is such a type of reaction where two or more than two compounds react with…

Q: How would I draw a correlation diagram look like for the valence bond theory that shows the orbitals…

A: Ketene structure.

Q: CHEMISTRY (Please write the complete solution legibly. Choose the correct answer. No long…

A:

Q: Consider the following equilibrium reaction: H₂O + H₂O H₂O* + OH¯ When Sr(OH)2 is added, the…

A: Given , Reaction : H2O + H2O ⇌ H3O+ +OH-

Q: For the synthesis of maroon dye, Taylor needs to use a primary amine with a pH between 3.00 and 4.00…

A:

Q: Assign oxidation numbers for each of the elements participating in the following reaction: 2…

A: 2Al2O3 (s) + 3C (s) -------> 4Al (s) + 3CO2 (g)

Q: 28. A student prepares 2.00 L of a solution containing 0.440 mol of sodium formate (HCOONa) and…

A: Answer:- This question is answered by using the simple concept of calculation of moles of NaOH using…

Q: 10 Listen What volume of 18.0 M sulfuric acid is required to prepare 21.1 L of 0.126 M H₂SO4? 6.77…

A:

Q: Of the substances below which answer correctly gives ALL of the in the Table. H H H (1) H-C-0-H (2)…

A: There are various types of intermolecular forces of attraction.  Dipole-Dipole attraction London…

Q: How many milliliters of 0.125 M KOH are required to completely neutralize 20. mL of 0.200 M HCl?…

A: we have to calculate the volume of KOH needed to neutralize the HCl solution

Q: Choose the state of water in which the water molecules are farthest apart on average. steam (vapor)…

A: Different states of matter can be interconverted by changing the temperature and pressure of the…

Q: Determine the pressure exerted by 2.10 mol of gas in a 2.92-L container at 32°C. 1.89 atm 52.6 atm…

A:

Q: Complete and balance the following reactions: (a) Zn + Cu²+ → (b) Fe + H+ → (c) Ca + Mg²+ → (d) Na +…

A: Balanced chemical equation are those in which number of atoms on both sides of equation are equal.…

Q: Which of the following is a resonance structure of I? 1 I 2

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Q: Using AH values from the appendix, calculate the standard enthalpy change for the following…

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Q: Write the cell notation for: Mn(s) +  2 Ag+    →   Mn2+    +   2 Ag(s)

A:

Q: A buffer solution contains 0.351 M KHSO3 and 0.344 M K2SO3. If 0.0252 moles of hydroiodic acid are…

A:

Q: You transfer a sample of gas at 17°C from a volume of 4.44 L and 1.10 atm to a container at 37°C…

A:

Q: Gaseous methane (CH₂) reacts with gaseous oxygen gas (0₂) to produce gaseous carbon dioxide (CO₂)…

A: The balanced equation for the reaction is CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) Use the following…

Q: how did the mass go from 58.3g to 5.83g

A: Volume of KOH solution= 100.0 mL Molarity of KOH solution= 2.00 M Volume of Mg(NO3)2 solution= 100.0…

Q: The average molecular speed in a sample of Xe gas at a certain temperature is 245 m/s. The average…

A:

Q: Tutorial problem Assign the configurations of the chiral centres, and the alkenes, in each of the…

A: Steps for the determination of absolute configuration of chiral centre: Label the groups as 1, 2, 3…

Q: An ampoule with 290 mg N₂04 was introduced into a quartz vessel of volume 500.0 mL. The vessel was…

A: To solve this problem, we need to use the ideal gas law to relate the pressure, temperature, and…

Q: Listen When 38.4 g of CH4 reacts completely with excess chlorine yielding 45.0 g of CHSCL, what is…

A:

Q: The following is a double replacement reaction. 2C 2H 2 + 50 2 → 4CO 2 + 2H 20 True False

A:

Q: How many grams of PbCl2 are formed when 22.0 mL of 0.554 M KCl react completely with Pb(NO3)2? Molar…

A: According to the question, The molarity of the KCl = 0.554 M The volume of the KCl = 22.0 ml = 0.022…

Q: What mass of calcium chloride, CaCl₂, is needed to prepare 3.610 L of a 1.56 M solution? 5.63 g 425…

A: w = MW x M x V Where w = mass of solute in gram; MW = molecular weight of solute, M = molarity of…

Q: Use the standard reduction potentials given below to determine the standard potential for the…

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Q: In a dilute sodium bicarbonate solution, [H] = 1.7 x 10-8 M. Without using a calculator, what…

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Q: Question 7 The maximum stress that a material can endure before it breaks is called O Ultimate…

A: Answer: The maximum stress that a material can endure before it breaks is called- Ultimate tensile…

Q: en 1.29 g of CaO (molar mass: 56.08 g/mol) is added to 50.0 g of water at 25.0 °C in a calorimeter,…

A: We have to find enthalpy of reaction.

Q: What ion does each of the electronic configuration belong to? a) [Ne] 3s¹ b) [Ar] d) [Ar] 4s² 3d4 e)…

A: The given electronic configurations are We have to match the given electronic configurations.

Q: 2 H Arrow-pushing Instructions AA base :0: XT OH H3C H3C The aldol reaction is a carbonyl…

A: Organic reactions are those in which organic reactant react to form organic products. In the given…

Q: Calculate the molarity of sodium chloride in a normal saline solution (0.90% NaCl). The molar mass…

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Q: After preparing the citrate buffer, Vegas and Pete determined the buffer capacity of the solution by…

A: A question based on quantitative analysis. A set of data about volumetric titration is prescribed…

Q: In the electrochemical cell Cd|Cd+2||Al3+|Al it is fulfilled that: a) Cadmium is oxidizing and…

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Q: Which of the following measurements corresponds to met- ric Ruler B shown in Figure PSS.2? (a) 2.0…

A: The given measurements are 2.0 cm, 2.00 cm, 2.05 cm and 0.5 cm.

Q: Which of the following salts gives the following Ksp expression?  Ksp=27s4 a.BaSO4 b.AgCl c.Ag2CO3…

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Q: Design a buffer that has a pH of 7.21 using one of the weak base/conjugate acid systems shown below.…

A: Given, The pH= 7.2  The molarity of the weak base = 1.00 M The volume of the buffer = 1 L The set of…

Q: QUESTION 11 A student titrates 26.5 mL of a sulfuric acid solution with 0.750 M NaOH. The color…

A: At equivalence point the no of equivalent of the acid and base is same. the no of atom in unit cell…

Q: Q/Gives the gain for Internal perfect gas procese reversable or Inveversable a LA energy for between…

A: The internal energy of a system refers to the total energy of the system which is the sum of all…

Q: QUESTION 31 Which of the following are incorrect? (1) Covalent network solids have low melting…

A: The properties of different kinds of solids mainly depend on the nature of intermolecular forces…

Q: B₂S3 + H₂O → H3BO3 + H₂S

A: Balanced equation, 1) B2S3 + 6H2O ---> 2H3BO3 + 3H2S Atoms of different elements are balanced on…

Q: A 23.3 mL sample of 0.325 M ethylamine, C2H5NH2, is titrated with 0.253 M perchloric acid. The pH…

A: Given, The molarity of the  ethylamine (C2H5NH2) = 0.325 M The volume of the ethylamine (C2H5NH2) =…

Q: Write balanced molecular, ionic, and net ionic equations for the reactions that may occur when the…

A:

Q: In the reaction MgCO3(s)→ MgO(s) + CO₂(g) how many liters of carbon dioxide gas, CO₂, measured at…

A: To solve this problem we have to calculate the volume of carbon dioxide gas .

Q: Is limestone (CaCO3) water-soluble or insoluble? Explain why using the properties of its ions and…

A: We have been asked limestone is soluble or insoluble in water.We also have been asked to explain…

Q: QUESTION 8 Which compound is aromatic? OA 0000 OB OD

A: 7).  A   (2,2-dimethylbutyl (aka)neo-pentyl)  8). A ( follow huckel rule of aromaticity).

Q: Calculate the concentration of the hydrochloric acid if a 20.00 mL sample is titrated with standard…

A: Since, Molarity is the number of moles of solute dissolve in one litre of the solution. Thus,

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.