Macmillan Learning The half-lives of different radioisotopes are given in the table. Half-life (min) Radioisotope argon-44 lead-196 time: potassium-44 indium-117 12 37 22 43 How long would it take, in minutes, for the amount of argon-44 to decrease from 20.0 mg to 2.50 mg? min

Q: 6. Given the following methanation reaction at 1000 K. CO (g) + 3 H₂ (g) CH4 (g) + H₂O (g) a. Is the…

A: According to the reaction, The temperature of the methanation reaction is given by = 1000 K The…

Q: What is the IUPAC name of this molecule? OH A/ 신

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A: Given , Reaction : 3Cu2+(aq) +2Cr(s) →3Cu(s) +2Cr3+(aq)

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A: NH3-------->NO2- -----> NO3-  -------> N2 gas ( harmless)

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A: In presence of weak acid like H2O , E1 reaction take place.

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Q: What is a correct cell notation for a voltaic cell based on the reaction below? Cu2+(aq) + Pb(s) +…

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Q: A: unhindered carbon Route B: hindered carbon For a small lab which route is better for a Grignard…

A: Grignard reagent acts as nucleophile during conversion of aldehyde/ketone to alcohol.  Grignard…

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Q: Oxidation - Reduction Reactions Complete and balance the following half-reactions. In each case…

A: Oxidation: It involves loss of electrons Reduction: It involves gain of electrons

Q: 1) Draw one Lewis structure for each of the following molecules. 2) Determine the molecular shape…

A: For the molecules  NCl3 COCl2  we have to draw Lewis structure and determine the molecular shape…

Q: Explain what scientific principles you used in making this prediction and how this supports your…

A: Highest melting point - CaO  Melting point of the molecules is given below-->  NaCl - 801°C CaO -…

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Q: What is the IUPAC name of this molecule? A/

A: Answer:- This question is answered by using the simple concept of naming the organic compound using…

Q: How many stereoisomers of 2-methyl-heptan-4-ol could form? How many would you expect to form? In…

A: Only two isomers are possible.

Q: A B с D E ||| BH3-THF H2O2, NaOH tBuOK CHCI 3 CH₂I2 Zn/Cu mCPBA 1. Hg(OAc)2, H₂O 2. NaBH4, NaOH r

A: Let's complete each reaction one by one.

Q: 16.12 Draw the condensed structural formula for each of the following peptides, and give its…

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Q: How many stereoisomers are possible for this molecule? 08 16 02

A: Chiral carbon is a carbon atom which are attached with four different groups

Q: What would be present in an IR spectra of 2-methylheptan-4-one?

A: Analysis of IR spectra of 2-methylheptan-4-one

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Q: Draw the Lewis structure for SO₂ (with minimized formal charges) and then choose the appropriate…

A: Given -> SO2

Q: The 3rd Nitrogen from the left has 3 sigma bonds and a lone pair. Isn't that sp3?

A: For hybridization we check the electron groups. If there are 4 electron group on N ( 3 Sigma bond…

Q: What would need to happen if you wanted to melt NaCl?

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Q: n/takeAssignment/takeCovalent Activity.do?locator-assignment-take [Review Topics] [References] Use…

A: The reaction will be -->  ZnI2 (s) + H2O (l) --> Zn2+ (aq) + 2I- (aq)

Q: CH3 CH₂ Br Na* OCH 3 CH3 CH₂

A: -> In E2 mechanism base can abstract anti periplanar beta hydrogen and form alkene as product.…

Q: 1. The decomposition of PCBs can be represented by the equation 2 C12 Hy Cl + 23 O₂ + 2H₂0-24 CO₂ +…

A: 2 C12 H4Cl6 + 23 O2  + 2 H2O ==> 24 CO2 + 12 HCl  Given moles of O2 = 10.0 moles  In the given…

Q: ! Required information Problem 13.012 - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS NOTE: This…

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Q: 9.Label the functional groups and identify the correct compound based on the IR spectrum. by by I %…

A: Anlyse ir spectrum.

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Q: Question 3: What product is formed when CH₂OCH₂CH₂C=CCH₂CH(CH3)2 is treated with each reagent: (a)…

A: Reaction mechanism is given below

Q: 11. sodium phosphide 12. diphosphorus pentoxide 13. potassium nitride 14. sodium oxide 15.…

A: -> Ionic compound is formed due to attraction of cation and anion . -> Ionic bond  is formed…

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Q: Henderson-Hasselbalch equation for a propanoic acid solution (CH3⁢CH2⁢CO2H, p?a=4.874). Using the…

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Q: Use the References to access important values if needed for this question. Use the standard…

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Q: a. CH3CH₂-C=C-CH₂CH₂CH3 ·00 C=C b. c. HC=C–CH,CH,–C=C–CH3 (HO)

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Q: What is the charge of the second product complex (not just the metal center) in the following…

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Q: most likely to complete this reaction. RCO3H OH

A: -> Borohydration - oxidation give antimorkovnikov addition of H2O overall.

Q: 1. A gas has a temperature of 14ºC, and a volume of 4.5 liters.  If the temperature is raised to…

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Q: Excess bromine gas is added to ethyne. The product of this reaction is: 1,1,2,2-tetrabromoethane O…

A: When alkyne is treated with excess of bromine then it becomes saturated and it colourless.

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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.