How many orbitals are there in the 7s sublevel? а. 1 b. 3 С. 5

Q: A solution of 4.561 MB is 5.476% ionized at 25°C. What is the Kh for this base? (the answer should b...

A: Given :-  Molarity of base B = 4.561 M  % ionization of base B = 5.476%  Temperature = T = 25 °C  Kb...

Q: Consider a saturated solution of barium iodate in 0.025 M BaCl2. For the salt: Ba(IO3)2(s) ⇌ Ba2+ + ...

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Q: The space-filling representation of a crystalline potassium provided below is an example of a unit c...

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Q: Which one of the following statements about solid Cu (face-centered cubic unit cell) is incorrect? O...

A:  a fcc lattice there is one constituent particle at each corner and one at the centre of each face. ...

Q: Draw the most stable chair conformation of trans-1-tertbutyl-4-methylcyclohexane? (It means, put sub...

A: The solution is given below - 

Q: O A. The overall order of the reaction is 2. O B. The overall order of the reaction is 1. OC. The re...

A: 1. The overall order of the reaction is 1. As in the rate of the reaction is dependent on the amount...

Q: Draw a heating curve when octane, a component of gasoline, is warmed from -70 °C to 130 °C. It has a...

A: A heating curve is a graphical representation of the phase transition that a material undergoes when...

Q: 2. Cinnamaldehyde is used as a flavoring agent in cinnamon candies. Synthesize cinnamaldehyde by cro...

A: We are required to synthesize cinnamaldehyde by cross aldol condensation followed by dehydration  re...

Q: Atomic theory

A: Atomic theory explains that each substance in this universe is  made up of tiniest of the tiny parti...

Q: Morphine (C17H1903N) is very effective at relieving intense pain. Calculate the pH of a 0.00115 M so...

A: Concentration of morphine = 0.00115 M  Value of Kb = 8.0 × 10-7   

Q: Order the following sets of five atoms and ions according to increasing size: ("1" smallest and "5"...

A: The given anions and cations are - - >  F- , H- , Be2+ , Li+  , Cl-   When an atom looses its ele...

Q: K for the reaction: 2 SO2(9) + O2(g) = 2 SO3(g) If initial concentrations are [SO2] = 0.20 M, [O2] =...

A: Answer) We have given equilibrium constant (Kc) and we also have concentration of each substance . S...

Q: The poison strychnine is a weakly basic compound with Kb = 1.8 x 10 What is the pH of a 0.058 M solu...

A: Given that, 0.058 M solution of a weak base, i.e. C = 0.058 M. The Kb is 1.8×10-6. We have to calcul...

Q: 2. Which of the following half-reactions lare reduction? → NO ONO3- D Maz → Mn Oz

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Q: B. GAS STOICHIOMETRY PROBLEM: For all of these problems, assume that the reactions are being perform...

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Q: Calculate Ke. for the reaction A (aq) + B (aq) 2C (aq) if at equilibrium [A] = 0.62 M, [B] = 0.53 M,...

A: The Keq of the above reaction can be calculated as follows 

Q: Calculate the value of AH° for the reaction. 2 H2S (g) + 3 02 (g) > 2 H2O (1) + 2 SO2 (g) AH°F H2S (...

A: The standard enthalpy of formation is the enthalpy change of reaction in standard conditions when on...

Q: What is valency

A: In a chemistry the valency is measures the combining power or capacity of an element with other elem...

Q: Nitrogon happen to the concentrations of H CO,& CH3OH at equilibrium if a catalust is added? A) Cata...

A: If a catalyst is added to the reaction, the concentration of H2, CO, and CH3OH at equilibrium will n...

Q: 4. In a neutral compound, what is the sum of all oxidation numbers of all atoms making up the compou...

A: There are some elements that shows variable oxidation states . Where other some elements that has fi...

Q: Follow the curved arrows and draw the products of the following reaction. Include all lone pairs and...

A: We have to predict the product of the reaction.  

Q: OH RCOCI „NH2 EtO OEt A Base H,0*

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Q: Which one has lower vapor pressure? C2H6 or CH4

A: We have given two compounds C2H6 and CH4. We need to tell which among them has lower vapour pressure...

Q: Given the following proposed mechanism, predict the rate law for the overall reaction: 2 NO2 + Cl2 s...

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Q: Calculate the value of K, for the equation C(s) + CO, (g) = 2 CO(g) Kp = ? given that at a certain t...

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Q: what is the reaction that tartaric acid has with water?

A: Tartaric acid contains carboxylic acid and alcohol, functional groups. The structure of the tartaric...

Q: Which has lower surface tension? H25 or H2O

A: Which one having lower surface tension among H2S and H2O ?

Q: Which two species act as the bases in the following reaction? HPO42-(aq) + NH4*(aq) 2 H2PO4-(aq) + N...

A: According to Bronsted-Lowry concept,  Acid is a substance that has a tendency to donate a proton to ...

Q: What is the conjugate base of HPO42-? OA H3PO4 O B. PO43 H2PO4 O D.OH O E HPO4

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Q: What is the chemistry behind the presence of salt that will increase rusting of metals

A: The role of salt in rusting process is given below

Q: Calculate the value of AH for N2H4 (1) + 02 (g) + N2 2 NH3 (g) + 3 N20 (g) N20 (g) + 3 H2 (g) 2 NH3 ...

A: To determine the value of ∆H of the reaction Hess law. According to Hess law the enthalpy change of ...

Q: IR spectra (KBr disc) LOD D 4800 3000 2000 1000 500 MAVENUNB ERI l

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Q: Calculate AH

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Q: 2 ml 1 ml 1 ml 1 ml STOCK solution colored- dye bottle 1 mg/ml A B C D E Volume of water 4ml 4ml 4ml...

A: Dilution of the solution: When we dilute a concentrated solution with pure water, the amount of solu...

Q: What is the correct equation for percent difference? о теasured-+ассеpted] |measured-accepted|/2 х 1...

A: Percent difference between two number can be calculated by difference between two number divided by ...

Q: Which two species act as the acids in the following reaction? HF CH3CO0 2F+CH3COOH OA CH3COO, F¯ O B...

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Q: What does it mean when it says "Chemical reaction changes the actual chemical itself."

A: Given: "Chemical reaction changes the actual chemical itself".  

Q: 51.4 g of Y(g) (molar mass = 29.10 g/mol) is placed in a 0.688 L flask for the following reaction to...

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Q: Hard Water Trial 1 Hard Water Trial 2 Hard Water Trial 3 Initial Syringe Reading (mL) 1ml 1ml ...

A: We would use the volume of water to calculate moles of CaCO3.  Then from moles we would calculate mg...

Q: A) Use the Heisenberg uncertainty principle to calculate Δx for an electron with Δv = 0.425 m/s.

A: Detail mathematical calculation for delta x using Heisenberg uncertainty principle is given below

Q: O 20 mol D Question 3 Given the following reaction: A+ 3B --> 2 C Calculate how many grams of C are ...

A: Given data : Mass of A = 9 g Molar mass of A = 18 g/mol Molar mass of C = 100 g/mol

Q: Question 13 For the reaction, 2X =Y, If 4.0 moles of X and 0.4 moles of Y are introduced into a 4.00...

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Q: 4.40 When iron and steam react at high temperatures, the fol- lowing reaction takes place: 3 Fe(s) +...

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Q: 4. In a neutral compound, what is the sum of all oxidation numbers of all atoms making up the compou...

A: Oxidation number: The covalent bond between the atoms of different electronegativity is polar. If we...

Q: 6If the ratc constant for this second-order reaction is 8.0x 10-8 L mol' s, what is the half-Life fo...

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Q: which has higher boiling point? H2o or C8h18

A: Which has higher boiling point H2O or C8H18 is given below with explanation.

Q: The energy required to remove an electron from a surface of a solid element is called its work funct...

A: A) Given: Minimum amount of energy required to remove electron from Ru = 452.3 KJ/mol.  

Q: Cag(PO4)2 (s)=3Ca2* (aq) + 2PO43- (aq) If, at equilibrium, a beaker contains 1.00 L of solution with...

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Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gas...

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Q: Al203 (s) = 2A13+ (aq) + 302- (aq) If, at equilibrium, a beaker contains 1.00 L of solution with 19....

A: The equilibrium reaction involved is Al2O3 <------> 2Al3+ (aq) + 3O2- (aq) Volume of equilibri...