Chemistry question and answers for July 01, 2023
- Q 3. Considering the reaction:2Fe2O3 + 3C --> 4Fe + 3CO2A. How many moles of C are needed to react with 6.00 moles ofFe203B. How many grams of Fe result when...
- Q If a solution containing 22.90 g of mercury(II) nitrate isallowed to react completely with a solution containing 7.410 g ofsodium sulfate,how many grams of solid precipitate will be formed?  How many...
- Q 1-bromopropane and 2-bromopropane area. constitutional isomers b.conformational isomers c. configurational isomers d. homologs e.stereoisomers
- Q How much energy is required to convert 14.0 g of ice at −15 °Cto 14.0 g of steam at 114°C?Specific heat capacity, ice: 2.108 J/g·K (at 0°C)Specific heat capacity, water:...
- Q Expriment extraction of limonenefrom orange peel by steam distillationthe recovery % was low and the IRthere was not c=c while there was c=o ,so what is possible errorand how to...
- Q A vessel with a volume of 2 L is halfâ€filled with water and thensealed so itcontains 1 L of air and 1 L of water. We will now conduct anexperiment...
- Q match the words to the questions.WORD BANK: precision, instrument precision, intra-assayprecision, intermediate precision, interlaboratory precision,range, raw data, results, reagant blank, linear range, treateddata, dynamic range, method blank, field blank, within-runprecision,...
- Q 1.Calculate delta S at 27*c:2CH4 (g) --> C2H6 (g)+ H2 (g)2. Calculate delta S at 27*c:2NH3 (g) --> N2H4 (g) + H2 (g)3. If delta H (+) and delta S...
- Q why it is advisable to run the reaction in a Schlenk lineexperiment in oxygen-free conditions
- Q explanation of column chromatography. Why do the compoundsseparate?
- Q To determine resonance energy of benzene, CDDT was combusted ina bomb calorimeter.Why is this research (to determine resonance energy ofbenzene) relevant in chemistry, life or other scientificfields?
- Q A weighed amount of sodium chloride is completely dissolved in ameasured volume of 4.00 M ammonia solution at ice temperature, andcarbon dioxide is bubbled in. Assume that sodium bicarbonate isformed...
- Q An analytical method which can be applied in a wide variety ofsample matrices is A. robust B. sensitive C. accurate D.selective
- Q fatty acids with an odd number of carbons are modified bycarboxylation of propionyl CoA to ultimately generate the 4 carbonTCA intermediate_____ a. citric acid b. succinyl CoA c. Fumaricacid d....
- Q Based on Le Chatelier's Principle in which direction will thefollowing reaction proceed if it is already at equilibrium giventhe following change in conditions.A(g) + 2B(aq) → 2C(g) ΔHrxn = −25...
- Q Based on Le Chatelier's Principle in which direction will thefollowing reaction proceed if it is already at equilibrium giventhe following change in conditions. A(g) + 2B(aq) → 2C(g) ΔHrxn =−25...
- Q Aspirin, C9H8O4, is produced from salicylic acid, C7H6O3, andacetic anhydride, C4H6O3, as shown below. C7H6O3 + C4H6O3 C9H8O4 +HC2H3O2 (a) How much salicylic acid is required to produce 5.0x10^2kg of...
- Q Question 1:For many weak acid or weak base calculations, you canuse a simplifying assumption to avoid solving quadraticequations.Classify these situations by whether the assumption isvalid or the quadratic formula is...
- Q Given the data below for the reaction, 2 A + 2 B + 4 C => D +E + 3 F,ExperimentInitial conc of A, mol/LInitial conc of B, mol/LInitial conc...
- Q A water treatment plant has 6 settling tanks thatoperate in parallel (the flow gets split into six equal flowstreams), and each tank has a volume of 600m^3. If the flow...
- Q For experiment :Liquid Vapor Equilibrium in a Binary System, whyis it necessary to have calibration curve for refractive index andcomposition of propanol?
- Q Net Equation: C6H10O + H2O + 2 MNO4- -----------> C6H10O +2MnO2 + 2OH-Calculate theoritcal yield andlimiting reagent and percent yield:0.7945grams of KMnO40.3642 gramscyclohexanonewater 15mlEnded with a adipic acid productof 0.02...
- Q Describe how you could experimentally determine the volume ofmixing V mix in a 0.95 mole fraction A and 0.05 mole fraction B
- Q 0.0012 mol of sodium carbonate (Na2CO3) are added to 1 L of purewater.a) If the solubility of sodium carbonate is 215 g/L, would youexpect all of the sodium carbonate to...
- Q Two 20.0-g ice cubes at –16.0 °C are placed into 275 g of waterat 25.0 °C. Assuming no energy is transferred to or from thesurroundings, calculate the final temperature of...
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