Chemistry question and answers for July 13, 2023
- Q Deduce the identity of the following compound from the spectraldata given.C9H10O2: 13C NMR, δ18.06 (quartet), 45.40 (doublet), 127.32 (doublet), 127.55(doublet), 128.61 (doublet), 139.70 (singlet), 180.98 (singlet);IR, broad 3500-2800, 1708 cm-1
- Q Cryolite, Na3AlF6(s), an ore used in the production of aluminum,can be synthesized using aluminum oxide.Balance the equation.Al2O3(s) + NaOH(l) + HF(g) -- Na3AlF6 + H2O(g)If 16.4 kilograms of Al2O3(s), 51.4...
- Q Write the molecular formula of a salt that, when dissolved inwater, produces the solution with an basic Ph?
- Q Which one of these salts will form a basic solution upon dissolvingin water?A) KBrB) KClO3C) LiClD) NaNO3E) NH4NO3Please explain how you got the answer for my own reference, Ireally appreciate...
- Q Given the double displacement reaction between aqueous solutionsof silver (I) acetate and calcium perchlorate: in the balancedmolecular equation the coefficient of silver (I) acetate is____ ,the coefficient of calcium perchlorate...
- Q Prussian Blue is an iron-containing pigment which is commonlyused to formulate blue paints. Give a possible formula for PrussianBlue if you know that it contains Fe3+ and Fe2+ in a...
- Q What would be the result of using a very polar solvent likemethanol (instead of ethyl acetate) to develop your TLC plates?
- Q Gaseous hydrogen and solid arsenic oxide react to form gaseousarsine and water by the following reaction:6H2 + As2O3 -->2AsH3 + 3H2OIntro a 4.0L reactor are placed excessAs2O3 and 0.143 moles...
- Q Rank these systems in order of decreasing entropy.1 mol of argon gas at 273K and 20L1/2 mol of argon gas at 100K and 20L1 mol of nitrogen gas at 273K...
- Q 1. List the major nomenclature rules for carboxylic acids, givean example (draw structure and give name)2. Explain the two major influences on the acidity of the O-Hbond in carboxylic acids3....
- Q An aqueous ethylene glycol (HOCH2CH2OH, FW = 62.07 g/mol)solution with a mass of 207.9 mg is titrated with 48.9 mL of 0.0829M Ce4 in 4 M HClO4. The solution is...
- Q An aqueous ethylene glycol (HOCH2CH2OH, FW = 62.07 g/mol)solution with a mass of 262.3 mg is titrated with 62.7 mL of 0.0851M Ce4 in 4 M HClO4. The solution is...
- Q How are the structural differences between triglycerides andphospholipids reflected in their biological functions?
- Q Consider the reaction:2 Na3PO4(aq) + 3Cu(NO3)2(aq) →Cu3(PO4)2(s) + 6NaNO3(aq)What mass of Cu3(PO4)2 can beformed when 23.7 mL of a 0.170 Msolution of Na3PO4 is mixed with76.3 mL of a 0.380...
- Q Calculate the ratio of the energy released by the completefission of 1.0 kg of Uranium-235 to the energy released by burning1.0 kg of methane, CH4. You can use the fact...
- Q From the information in the data section, calculate thestandard Gibbs energy and the equilibrium constant at 298K and 500 K for the reaction CuO(s) + CO (g) ó Cu(s) +CO2. Â
- Q (a) What are two software methods of signal to noise ratioenhancement? (b) Briefly explain how one of them works. Describehow signal to noise ratio affects LOD concentration.
- Q Nine hundred forty-seven cubic feet of wet air at 70 ï‚°F and29.2 in. Hg are dehydrated. If 0.94 lbs of water are removed, whatwas the relative humidity of the wet...
- Q Identify the following as either a chemical change or physicalchange, and provide evidence to support your answer:1. Blue Cu(II) cations of the salt solution react with greenNi(II) cations of its...
- Q Ether reactivity?Contrast the reactivity of ehters with other organiccompounds and discuss their importance as a solvent by citing twospecific synthetic schemes that utilize ethers as a solvent (oneexample for ethyl...
- Q the seasonally averaged sulfate concentration in thepore water of a lake sediment is 50 uM (micro moles) at thesediment-water interface, but only 5 uM at a depth 0.2 cm below...
- Q Describe the principles underlying recrystallization. What arethe five steps used for recrystallization and what does each stepaccomplish?
- Q Consider a three-level system with E1 < E2 < E3. Find theconditions by deriving the relevant equations at which the E2 → E1transition could be used to make a laser.
- Q For each of the following solutions, calculate the initial pHand the final pH after adding 0.010 mol of NaOH.1. For 240.0 mL of pure water, calculate the initial pH and...
- Q For each of the following pairs of gas properties, describe therelationship between the properties, describe a simple system thatcould be used to demonstrate the relationship, and explain thereason for the...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!