When a substance decays by beta emission, the mass number of the nucleus O decreases by 1; remains the same. O increases by 1; remains the same. O remains the same; increases by 1. O remains the same; decreases by 2. and the atomic number

Q: A vessel contains 2.00 moles of an ideal gas at a standard temp and pressure od (0C and 1atm). if…

A: Using the relationship of pressure with temperature, the change in pressure can be calculated with…

Q: Phosphoric acid is a colorless, syrupy liquid used in detergents, fertilizers and carbonated…

A: Phosphoric acid symbol is H3PO4

Q: In the following PIB model, suppose /4²dx (from x₁ to x₂) = 0.65, /42dy (from y₁ to y₂) = 0.89,…

A: Solution: In questions probablities are given

Q: An equilibrium reaction has an mean for the reaction? equilibrium constant, Keq, of 0.92. What does…

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Q: a) KHCO3 (aq) + HNO3 (aq) → a) HNO3(aq) + Al(OH)3(aq) → b) Zn (s) + HBr (aq) → c) LiOH (aq) + H₂SO4…

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Q: You are making 100 mL of a 0.66M phosphoric acid buffer with a pH of 7.0. What is the concentration…

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Q: A patient needs an infusion with 7 mmol of monobasic potassium phosphate and 7 mml of dibasic…

A: Formula used: moles = massMolar mass   Unit conversion: 1 mmol = 1 x 10-3 mol 1 mg = 1 x 10-3 g

Q: How many pg hydrogen are in 3.39 x 1015 ng of barium hydrogen carbonate hexahydrate?The answer must…

A: Given, Note: 1 ng = 10-9 g mass of barium hydrogen carbonate hexahydrate [Ba(HCO3)2.6H2O] = 3.39 ×…

Q: Aisha determines the concentration of NaOH by titrating it with 6.50 g KHP (a monoprotic acid). It…

A: Given data : Mass of KHP = 6.50 g Molar mass of KHP = 204.2 g/mol Volume of NaOH = 33.30 mL = 0.0333…

Q: Aromaticity On the basis of Huckel's rule, label the following molecules as aromatic, nonaromatic or…

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Q: The volume of 1 mole of a gas is 0.022414 m³. Will a blast furnace gas 2.2 kg CO, 1.46 kg CO₂ and…

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Q: Was your average experimental mass percent of oxygen in potassium chlorate higher or lower than the…

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Q: Some reactions require energy from the surrounding to react. The temperature of the the surroundings…

A: The reactions which require energy from the surrounding are the endothermic reactions.

Q: rat CH3 CH3 - C - CI CH3 CH3 - CH3 — C — СІ CH3 OR + CH3 CH₂- О C он CACO H 0: CHICOH

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Q: Mass of watch glass and evaporating dish:67.511 g   Mass of watch glass, evaporating dish, and Mg…

A: We are given data for the formation of a chloride product of magnesium from Mg(s) metal.  Your…

Q: Provide the major organic product for the following multi-step reaction. OH 1. H. HỌ 2. MeMgBr 3.…

A: Aldehydes are more reactive towards nucleophillic addition reactions than ketone Due to inductive…

Q: a) Calculate the electronegativity difference in a O-F bond. b) Describe the bond polarity A) 7.5 B)…

A: Electronegativity is the tendency of atom to pull the shared pair of electron towards itself in a…

Q: Consider the following rotational-vibrational line spectrum: a. D b. G C. C d. F -Vight which peak…

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Q: Complete the following acid/base reaction: HNO3(aq) + Mg(OH)2 (aq) --> Mg(NO3)2 and H₂O O Mg(NO3)2…

A: Neutralization Reaction: A neutralization reaction is a reaction in which a neutral product is…

Q: Data Table 2. Final Results of the Titration of Unknown Acid According to Appendix II Unknown acid…

A: #Q.1: Given the initial molarity of the unknown acid = 0.000197924 measured initial pH of the…

Q: We can draw three inequivalent Lewis structures for the selenite ion, Se032- The concepts of formal…

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Q: The highest temperature recorded for Georgia is 112 °F and the lowest being -17 °F. What is the…

A: Formulas for converting temperature values between different units are referred to as temperature…

Q: Draw the Lewis structure for the nitrite ion NO2-. Show your process, including accounting for…

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Q: A reaction A(aq) + B(aq) = C(aq) has a standard free-energy change of -3.64 kJ/mol at 25 °C. What…

A: Solution: The reaction is as follows:…

Q: A chemistry graduate student is studying the rate of this reaction: 2C1₂05 (g) → 2Cl₂(g) +50₂ (8)…

A: In order to know about the order of reaction, put the data in the equations for different order…

Q: What is the orientation of the two pi bonding p orbitals? O parallel to each other O perpendicular…

A: Solution:  In this problem we have to see orientation of p orbitals.

Q: How many molecules are in 5.0 moles of water?

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Q: Classify these salts according to Strength and Role in the Buffer system 1. Calcium carbonate…

A: Buffers are the solution which are resistant to the pH change when small amount of acid or base is…

Q: (1) OH Н. но. ди А (4) OH (5) OH (3)

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Q: A chemistry graduate student is studying the rate of this reaction: H₂CO3(aq) → H₂O (aq) + CO₂ (aq)…

A: we have to write the rate law and calculate the rate constant for the given reaction

Q: The overall reaction for the corrosion of iron (rusting) by oxygen is…

A: Solutions                               Given  that         The overall reaction for the corrosion…

Q: Propose a plausible mechanism for the following transformation: معلی معلم OH H₂O* OH

A: H3O+ is hydronium ion. It is used as a catalyst in this reaction.

Q: The rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an…

A: Recall the data, Activation energy Ea=30.0 KJ mol-1 rate constant k=2.0*105 M-1s-1 @307.0°C rate…

Q: You are making 100 mL of a 0.66M phosphoric acid buffer with a pH of 7.0. What is the concentration…

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Q: What is/are the regent(s) for the following reaction? Problem viewing the image, Click Preview Here…

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Q: Which of the following is the correct Lewis-dot structure for BFS? B=S-F: :S=B-F: =B-F: :S B ..…

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Q: 2 > A sample of gas occupies a volume of 50.7 mL. As it expands, it does 123.5 J of work on its…

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Q: 3.Determine if cis-trans isomerism is possible for the following compounds. If cis-trans is…

A: The given compounds are a)  2-butene b)  1-butene c)  2-pentene

Q: The average bond order is the number of bonds between two atoms taking into account resonance. Draw…

A: Sulfur dioxide has a total of 18 valence electrons: 6 from the sulfur atom and 6 from each of the…

Q: What mass of silver chloride is needed to produce 3.2 g of silver nitrate? Zn(NO3)2 + 2 AgCl --> 2…

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Q: Explain why lead compound is very important in development of pharmaceutical drug. Give ecample of…

A: Introduction :  A lead compound can be defined as a drug-like compound that is the start of the drug…

Q: Solid iron(III) hydroxide and solid iron(III) sulfide are in equilibrium with a solution containing…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: A reaction A(aq) + B(aq) = C(aq) has a standard free-energy change of -3.87 kJ/mol at 25 °C. What…

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Q: The specific heat capacity of aluminum is 0.214 cal/g °C.. How many calories of heat are necessary…

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Q: Lewis-dot structures are determined to be correct primarily by implementing octet rule after…

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Q: Relative Intensity 100 80 60 40 T 20- 0 NS-NU-1310 25 50 75 m/z 100 button 125 ¹H NMR (90 MHz,…

A: We are given a mass spectrum of an organic compound, and values of 1H NMR and 13C NMR are also…

Q: Predict the product formed in the nucleophilic aromatic substitution reaction between…

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Q: 10.2. Show that, for an ideal gas: (a) A = [Cydr - dT dT-nRTln V-const. T+ const. TSC / AT 1 (b) G=…

A: To show that, for an ideal gas: (a) A = ∫CVdT - T ∫CVTdT - nRT ln V -const. T + const. (b) G= ∫CPdT…

Q: Which of the following chemical equations represent a synthesis or combination reaction? 2 KCI (aq)…

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Q: How many milliliters of silver nitrate is required in the standardization? If wt. of silver…

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