Chemistry question and answers for August 23, 2023
- Q Vapor Pressures of a solid and liquid ammonia near the triplepoint are given by: log P solid/ torr=10.00-1630 K/T log P liquid /torr=8.46-1330 K/T Calculate the ratio of the slopes...
- Q 1. What is the maximum mass of iron that can be obtained by thereaction of 65.25 g Fe2O3 and 25.96 g ofH2?Fe2O3(s) + 3H2(g)-> 2 Fe(s) + 3H2O(g)2. What is...
- Q The water gas shift reaction involves the reaction of carbonmonoxide with water vapor to form carbon dioxide and hydrogengas:CO(g) + H2O(g) → CO2(g) +H2(g)28.01 g CO and 9.01 g water...
- Q Explain the principles of the metal ion indicators used in EDTAtitration
- Q Looking for a detailed list and explanation of the featuresfound in 1H-NMR, 13C-NMR, and mass spectrometry of RALOXIFENE
- Q 1. Create a C10H22 aliphatichydrocarbon that contains 2 different substituents. Name it anddraw the skeletal structure.2. Describe the intermolecularforces that cause large hydrocarbons to go from liquid tosolid.3. Draw R...
- Q How much ice (in grams) would have to melt to lower thetemperature of 355 mL of water from 26 ∘C to 6 ∘C? (You mustconsider the enthalpy in cooling the...
- Q Traditional solder is a low melting point alloy of lead and tin.(Some countries havemandated the future use of lead-free solders,because of concerns relating to theenvironmental consequences oflead use and disposal.)...
- Q Consider the following reaction:I2(g)+Cl2(g)⇌2ICl(g)Kp= 81.9 at 25 ∘C.Calculate ΔGrxn for the reaction at 25 ∘C under each ofthe following conditions.PICl= 2.65 atm ;PI2= 0.325 atm ;PCl2= 0.212 atm .
- Q George was happy he did so well on his math test after doingpoorly on the last one. He knew he had the ability, but just didn’tstudy last time. This time...
- Q Suppose you have 1.00 L of anaqueous buffer containing 60.0 mmol benzoic acid (pKa = 4.20) and40.0 mmol benzoate. Calculate the pH of this buffer.What volume of 5.00 M NaOH...
- Q Consider the following reaction occurring at 298 K:N2O(g)+NO2(g)⇌3NO(g) Part A Show that the reaction is notspontaneous under standard conditions by calculating ΔG∘rxn.Part B If a reaction mixture contains only N2O...
- Q Two kg of water exist initially as a vapor and liquid at 90°C ina rigid container of volume 2.42 m3.(a)At what pressure is the system?(b)What is the quality of the...
- Q What functional groups are in a receptor? Does the benzene ringin a drug or adrenaline form a hydrophobic interaction in areceptor?
- Q How much heat energy, in kilojoules, is required to convert 32.0g of ice at −18.0 ∘C to water at 25.0 ∘C ? Express your answer tothree significant figures and include...
- Q Clausius inequality: working with a cycic path shown and usinghis own result, clausius concluded that in an isolated systementropy increases . Can you prove the same as well?
- Q A student was given an old tablet of vitamin C weighed 1.022 gto analyze. The tablet was dissolved in 700.0 mL water, and 35.0 mLaliquot of this solution required 45.6...
- Q 1) 1. How many ATOMS ofsulfur are present in 4.30 molesof sulfur dioxide ?atoms of sulfur.2. How many MOLES ofoxygen are present in1.91×1022 molecules of sulfurdioxide ?moles of oxygen.2) 1....
- Q Determine the empirical and molecular formulas of each of thefollowing substancesPart AIbuprofen, a headache remedy, contains 75.69% C, 8.80% H, and15.51% O by mass, and has a molar mass of...
- Q (a) when 1/2N2(g)+3/2H2(g)?NH3(g)for NH3(g) find the value of?H?f.(b) when S(s)+O2(g)?SO2(g)For SO2(g) find the value of?H?f.(c) when Rb(s)+12Cl2(g)+32O2(g)?RbClO3(s)For RbClO3(s) find the value of?H?f.
- Q Compare and contrast the BCA and Bradford methods for proteinconcentration determination. How does each work? Give an example ofsomething that interferes with these methods and explain where eachworks better than...
- Q You work in a small-scale manufacturing facility that usesphthalic acid as the starting material for a multi-step synthesis.Your company buys ~98% pure phthalic acid from a major manufacturerand purifies it...
- Q How does type of drying impact product quality? What are somepros and cons of each processing parameters (i.e. microwave, hotair, or freeze drying)?How would compositional parameters of the food product...
- Q Which of the following titrations results in a basic solution atthe equivalence point? Select one:A. NaCN titrated with HClB. HCl titrated with NH3C. HCN titrated with NaOHD. HCl titrated with...
- Q Synthetically produced ethanol is an important industrialcommodity used for various purposes, including as a solvent(especially for substances intended for human contact orconsumption); in coatings, inks, and personal care products; forsterilization;...
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