Chemistry question and answers for August 08, 2023
- Q A digital watch battery draws 0.40 milliamperes of current,which is provided by a mercury battery whose net reaction is:HgO(s) + Zn(s) → ZnO(s) + Hg(l) If a partially used batterycontains...
- Q A new wastewater treatment plant was built to treat thewastewater flow 800,000 gpd. The capital cost to build thewastewater treatment plant was $6,000,000. The annual operation andmaintenance costs of operating...
- Q A typical person has an average heart rate of 68.0 beats/min.Calculate the given questions. How many beats does she have in 4.0years? How many beats in 4.00 years? And finally,...
- Q explain how the cathode rays may be obtained
- Q Question: 1. What kind of repulsive interactions exist inthe boat shaping of cyclohexane?2. How many 1,3-d...1. What kind of repulsive interactions exist in the boat shaping ofcyclohexane?2. How many 1,3-diaxial...
- Q Describe a low carbohydrate diet and a low fat diet. Be sure todescribe them at the molecular level and relate them to thepathways we’ve studies in this class. Compare and...
- Q Calculate the ionic strength in a solution that contains 0.010mol KCl, 0.005 mol MgCl2, 0.002 mol MgSO4, and 100g H2O.
- Q what is freundlich and langmuir adsorptioninclude their graphs as well
- Q A very long pipe is capped at one end with a semipermeablemembrane. How deep (in meters) must the pipe be immersed into thesea for fresh water to begin to pass...
- Q Preparation and characterizations of integrated CuO electrode
- Q Calculate the pH of each of the following solutions:a. 0.00184M H+b. 6.23 x 10-4M HClc. 3.18 x 10-2M NaOHd. 4.12 x 10-4M NaOH
- Q 20. The chemical equation for the reaction between hydrochloricacid and potassium hydroxide is HCl(aq) +NaOH(aq) NaCl(aq) + H2O(l)When 25 mL of 1.0 M HCl (36.5 g/mol) is mixed with 25...
- Q Buffer capacity is a measure of a buffer solution\'s resistanceto changes in pH as strong acid or base is added. Suppose that youhave 115 mL of a buffer that is...
- Q What is the mole fraction of O2 in a mixture of 15.1 g of O2,8.19 g of N2, and 2.47 g of H2?0.237SubmitPrevious AnswersCorrectPart BPart completeWhat is the mole fraction...
- Q Carbonic acid (H2CO3) is a weak diprotic acid withKa1=4.43×10−7 and Ka2=4.73×10−11. When sodiumbicarbonate (NaHCO3) is titrated with hydrochloric acid (HCl), itacts as a weak base according to the equationNaHCO3(aq)+HCl(aq)→H2CO3(aq)+NaCl(aq)Part AWhat...
- Q What is wastewater treatment?what is the process of wastewater treatment?why is wastewater treatment important?No Plagiarism. Please Print essay format question
- Q Someone please distinguish the difference between hybrid atomicorbitals in valence bond theory and LCAO molecular orbitals inmolecular orbital theory.
- Q (8) When 100.0 mL of weak acid HA were titrated with 0.09381 MRbOH, 27.36 mL were required to reach the equivalence point.(a) Find the molarity of HA.(b) What is the...
- Q (Chemical Engineering) Why would any gas at STP beconsidered ideal?
- Q a solution prepared by mixing 60ml of .1m agno3 and 60ml 0f .1mtino3 was titrated with .2M nabr in a cell containing a silverindicator electrode and a reference electrode of...
- Q Demonstrate, how to calculate the drift time in a TOF massspectrometer, if the acceleration voltage is known.
- Q A 236.4 mL sample of water contains 0.0294 g of NaCl. Calculatethe concentration in ppm.concentration = ___ ppm
- Q Choose the atom with the more exothermic electron affinity ineach pair:a) I or Br:b) Ga or As:
- Q Ammonium chloride is salt produced from the reaction ofmonobasic ammonia and chlorine. Ammonia has a pKb of 4.76.Calculate pH of of solution by adding 100g NH4Cl to 100ml of water.Assume...
- Q A solution containing 50 mL of 2 x 10 -3 M of an indicator H 2In is measured to have an absorbance of 0.240 at 540 nm with a 1...
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