The Cs-131 nuclide has a half-life of 30 years. After 120 years, 4.4 g remain. What is the original mass of the Cs-131 sample in grams?

Q: A reaction vessel is prepared by mixing 1.20 mmol SO2(g), 0.50 mmol O2(g), and 0.10 mmol SO3(g) in a…

A: Given: mmol of SO2 =1.20 mmol of O2 = 0.50 mmol of SO3 = 0.10 Volume of container =0.50 L Reaction:…

Q: Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 36…

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Q: Need help why that is the answer? Or steps to get that answer

A: Benzene shows an aromatic electrophilic substitution reaction. In case of monosubstituted benzene,…

Q: 14.4 Label the endo and exo hydrogens. Ho al нь

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Q: Use the standard reduction potentials located in the 'Tables' linked above to calculate the standard…

A: Standard reduction potential gives the value of reduction potential.  Erdn = -Eoxd   Ecell=Erdn -…

Q: A particular organic molecule has a weight of 92 and provides the given mass spectrum below. a.…

A: Molecular ion peak = 92 Fragments = 79, 77, 57

Q: Selenium complete configuration: abbreviated orbital diagram: Cobalt complete configuration:…

A: for the given elements, we have to write the complete electron configuration and the abbreviated…

Q: Calculate the standard free energy change (AG") for the transfer of electrons from succinate to…

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Q: 4. A bottle of HBr has printed on its label that it contains 31%wt HBr. Using this information,…

A: Concentration of solution. Given; density of the solution is 1.22 kg/L

Q: 8=8 OH Nonconjugated B,y-unsaturated ketones are in base-catalyzed equilibrium with their conjugated…

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Q: Designing Synthetic Schemes with Aromatic Rings: For the reaction below, begin with benzene and…

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Q: The reaction: 2P+Q→ R has the following proposed mechanism: Step 1: P+Q=S (fast equilibrium) Step 2:…

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Q: B1) Draw all the Resonance structures for Cycloheptatrienyl anion, using arrows show the flow of…

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Q: What is the major organic product of the following reaction? NO₂ O A ОВ O C A. OD B. Problem viewing…

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Q: When the following half reaction is balanced under acidic conditions, what are the coefficients of…

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Q: The following structure represents an intermediate formed by addition of an ester enolate ion to a…

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Q: The molecule shown below is a monosaccharide. This monosaccharide is a(n)... H 0 H.O H. O H-O O-H…

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Q: An electric current of 21.10 A transports 880. μC of charge. Calculate the time this took. Be sure…

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Q: metimes in lab we collect the gas formed by a chemical reaction over water (see sketch right). This…

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Q: geraniol OH Reagents a. SOCI₂ b. CH3COCI C. CH₂(CO₂Et)2, CH3CH₂O* Na* d. H3O*, heat e.…

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Q: What is the reagent? OGMU Me-N OGMI OGMUL OMe OH ? Me-N OMe O

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Q: Propose a synthesis of the compound below on the left from ethyl acetoacetate (ethyl…

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Q: Give the hydrosen Concentration of a with pH = 12.57? PH ion Solution

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Q: What is the dissociation factor "i" for non-electrolytes? O a. 0 O b. 3 O c. 1 O d. 2

A: Dissociation factor  i for non electrolytic solution.

Q: How many grams of CrI3 are in 241mL of a 0.31M CrI3 solution? Assume the volume is exact. Answer:…

A: Given, Molarity of CrI3 solution = 0.31 M = 0.31 mol/L Note: 1000 mL = 1 L Volume of the solution =…

Q: What volume (in L) will a 32 g sample of butane gas, C4H10(g), occupy at a temperature of 45.0 oC…

A: Given: The mass of the butane gas = 32 g The temperature of the gas = 45.0 ∘C The pressure of the…

Q: A precisely measured volume of 250.0 mL of a saturated NaCl(aq) solution at room temperature is…

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Q: A molecule, that is sp3d hybridized and has a molecular geometry of T-shaped, has its central atom.…

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Q: Starting with 2, 9- decanediol, design a synthesis for 3-hydoxy-3- methylcyclononanone.

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Q: a. H₂C-(CH₂ b. H₂C- (CH₂) 10 H₂C-(CH₂le a. H₂C (CH₂)13 HA b. C. d. H H₂C-(CH₂)² 0 H₂C (CH₂ls H₂C- Ho…

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Q: What is the correct IUPAC name of the following compound? D CI NO₂

A: We need to find the IUPAC name of given compound

Q: What is the IUPAC name of the following compound? gula HO. OH

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Q: Which of the following is the major product of the reaction below: 0 CI OH dilute HCI major product

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Q: opose 12.2 g of sodium iodide is dissolved in 150. mL of a 0.30 Maqueous solution of silver nitrate.…

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Q: con Which of the following statements is correct? O a. Higher osmotic pressure can be achieved from…

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Q: R-O-p-0. R mhm Oxidation mCPBA RO OR O-P-O to mhmm

A: mCPBA is oxidising agent.

Q: QUESTION 4 Calculate AG for the following reactions at 25°C: (a) N₂ (g) + O₂(g) → 2 NO (g) (b) H₂0…

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Q: The normal boiling point of cyclopentane is 49.20 °C. At 31.00 °C, the vapour pressure of…

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Q: ori b. If 22.7 mL of a 0.109 M NaOH solution was needed to neutralize 31.5 mL of a H₂SO4 solution,…

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Q: Rank the following in order of acidity OH (!) () (least acidic) II<III<] (most acidic) (11) ОН NO…

A: Acidic nature of any compound depends on the ease of giving H+ ions when dissolved in water.

Q: Suppose the reaction 2AB+ C2-A2C + B₂C occurs by the following mechanism. Step 1 Step 2 Step 3 Step…

A: Given reaction is a multi-step reaction. Rate law for the reaction is determined by the slowest step…

Q: Icalate Hi B₂H6+6 ll₂(g) +2 Belz +6 Hel (6) using Hess Law Siven MM Belz Bel 319) + 3 H₂0le) 7 H₂…

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Q: Which of the following is the major product of the reaction below: OH Br. OH Br Br₂, H₂O Br major…

A: Benzene under go aromatic electrophilic substitution reaction. Br+  bromonium ion is electrophile.

Q: 9) Provide the reagents needed to complete the following transformations o out a) b) OH c) To OH…

A: Here we have to synthesize the following given target compounds from their starting material by…

Q: What volume of water vapour (in L) will be produced during the production 178 L of hydrogen cyanide?…

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Q: Identify and name the likely cofactors and enzymes responsible for this Phase 2 transformation.

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Q: 40. A metronidazole vaginal gel contains 0.75% of drug in 70-g tubes. An applica- tor will hold 5 g…

A: Given,  0.75 % of metronidazole drug in 70 g of tubes. The mass of metronidazole will be present in…

Q: Consider the following half reactions: Zn²+ (aq) + 2e → Zn(s) Fe (aq) + 3e → Fe(s) Eº = -0.76V Eº =…

A: Standard reduction potential: A solution with higher (more positive) reduction potential then the…

Q: How many moles of NH3 must be dissolved in water to give 813.0 mL of solution with a pH of 11.15? Kb…

A: The value of Kb for the given weak base is = 1.8x10-5 The concentration of the base solution is =?…

Q: What volume of water must be added to 40.0 mL of NaOH solution having pH 13.00 in order to produce a…

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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.