The Cs-131 nuclide has a half-life of 30 years. After 120 years, 2.5 g remain. What is the original mass of the Cs-131 sample in grams?

Q: 2. Bromine has two naturally occurring isotopes (Br-79 and Br-81) If the natural abundance of Br-79…

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Q: Magnesium metal burns in oxygen to give solid magnesium oxide, MgO. a) Calculate the mass of…

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Q: CI CO2ME H. CO,Me CO,Me MeO2C. CI 土 d) OH OH

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Q: will save this response. Question 6 JOunbon &of 18 An unknown tiprotic acid (HX) is itrated agalsta…

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Q: Electron configuration corresponds to the atom of Zn is: a. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 b. 1s2 2s2…

A: Atomic number of zinc is 30.  Zinc belong to d block elements

Q: 1) Write a balanced equation of following acid-base reaction (neutralization reaction) in water:…

A: 1.) In acid base neutralization reaction salt and water are produced . So we would first write…

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A: Percent recovery can be calculated using the initial amount and amount recovered.

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

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Q: Which of the following correctly describes the charge distribution of the nitrogen-bromine bond in…

A: Given,  The correctly described the charge distribution between Nitrogen and Bromine bond in…

Q: A 0.4755-g sample containing (NH,),C,O, and inert materials was dissolved in water and strongly…

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Q: Suppose you have a solution containing 1.0 M NaCI, 2.0M Na20, and 0.5 M CaCl2. What are the total…

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Q: Give a clear handwritten answer with explanation...give the mechanism of all sub parts  reactions…

A: 1) SN2 mechanism: Concerted mechanism with inversion of configuration 2) E2 mechanism: Concerted…

Q: 7401 x 1047, when expressed correctly in scientific notation, would be written as ___ . 7.401x…

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Q: A voltaic cell using Cu²*/Cu and Al³*/Al half-cells is set up at standard conditions, and each…

A: Solution -

Q: Construct the expression for Kc for the following reaction. 3 NO(g) = N:O(g) + NO:(g) Drag the tiles…

A: we  need to write the expression for equilibrium constant

Q: 1. LIAIH4 a. 2. H;O* b. H2NNH2 КОН c. (CH;CH2)½CULI Cl d. (CH3)NH2 KMNO4, H;O*

A: In this question we have to tell the product of the reaction.

Q: Use the References to access important values if needed for this question. 1A 8A H 2A 3A 4A 6A 7A He…

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Q: 11 "The atmospheric pressure on top of a 4 km high mountain is A the same as the atmospheric…

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Q: a. Complete and balance the equation below and provide the structural formula of each product: он K…

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Q: In measuring the specific heat of water, which of the following statements is true?

A: Correct option is C.

Q: 7. Use the following data to determine the rate law for the reaction 2NO+H,N,0 + H,O. Exp No. [NO]…

A: For the reaction,    aA  +  bB  ----->  Products    Rate = k [ A ]x [ B ]y   where k is the rate…

Q: What is molar enthalpy?

A: Given, define molar enthalpy.

Q: 6) Consider the below molecules. H H H H 6a) Which of the above molecules are amino acids? 6b) Which…

A: we need to identify which of the given molecules is/are amino acid(s)

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Q: 10. H,S (g) decomposes into its elements according to the following equation: + S. (e) If the…

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Q: MgBr 1. H,0* 2.

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Q: Enter your answer in the provided box. For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g) Kc is 9.39 at…

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Q: After heating a 1.095 gram sample of potassium chlorate, KCIO3, the final mass of the residue was…

A: Given, mass of sample of potassium chlorate (KClO3) = 1.095 g The final mass of the residue = 0.682…

Q: what drug is this？forgot the details，but looks similar like this compound

A: Structure is written wrong. If valency properly maintained then the structure should be like…

Q: Choose the correct name for the following structure. 01.1,3-dimethane-2-propanecyclohexane O…

A: The IUPAC name of the compound can be written on the basis of the number of carbon atoms in the main…

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A: From the Gibbs free energy change equation, we know that  Δ G 0 = Δ H 0 - T Δ S 0   Where - ΔG 0 =…

Q: The half life for the radioactive decay of rubidium-87 to strontium-87 is 4.88 x 10" years. Suppose…

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Q: 33. Which of the following reaction will go faster if the concentration of the nucleophile is…

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Q: 39 40 41

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Q: (Q75) The decomposition of gaseous nitric acid into its element is a nonspontaneous process with a…

A: 1.) ∆Grxn can be seen using formula :  ∆Grxn = ∆G°rxn + RTlnQ.  Where , Q is reaction quotient .…

Q: I need the equation for Ni2+(aq) plus sodium hydroxide and dimethylglyoxime

A: Ni2+ and dimethylglyoxime react in presence of base NaOH to form a complex Nickle…

Q: Calculate the density of nitrogen at STP. Express your answer in g/mL Show your work

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Q: Which carbon will be the best site for electrophilic aromatic substitution? A

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Q: 2. Propose a synthetic strategy for the following reactions. Make sure to include the structures of…

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Q: what gas law is when a balloon expands when more air is introduced to it.

A: When pressure is increased the baloon size decreases while if the pressure is decreased the baloon…

Q: The figure below is a mass spectrum in ESI- MS. Calculate the MW of the protein analyzed from the…

A: The figure is given as the mass spectrum in ESI-MS. The MW of the protein has to be calculted.

Q: 1) Write a balanced equation of following acid-base reaction (neutralization reaction) in water:…

A: The balanced acid base reaction is given below

Q: Consider the following: If you have 100 grams of water (density: 1.0 g/mL) and 100 grams of vodka…

A: Density  = mass / volume.  From this equation  we can see that if we keep mass constant than Density…

Q: Question #4 Show how cyclobutane carboxylic acid can be prepared using the malonic ester synthesis.

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Q: What could be a potential use of adipic acid? A) Not much, adipic acid is a 1,6-dicarboxylic acid,…

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Q: The reactants for a general double displacement are shown below. A,B + C,D2 - > What are the…

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Q: A 7.22 L sample of nitrogen at 25.0°C and a pressure of 0.862 atm is compressed to a volume of 2.28…

A: Given that: Initial volume(V1) = 7.22L T1 = 25°C = 25°C + 273 = 298K  P1 = 0.862 atm V2 = 2.28L P2 =…

Q: When 163.7 g of aluminum chloride (M = 133.33 g/mol) decomposes under STP conditions, what volume of…

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Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.