Chemistry question and answers for September 01, 2023
- Q Please write clear..Having samples such as extra virgin olive oil, corn oil and coconutoil.A-did the detergent bevave differently than the naturalsamples when treated with CaCl2?B-would you expect a detergent such...
- Q if a titration using these solutions started with25.00 mL of potassium chromate solution (0.5056 M), what volume of0.2456 M lead (II) nitrate solution would be required to reach theend point?...
- Q How many grams of CH3OH (MW = 32.04) are in 900 g of a 1.5 maqueous solution?I got 43.3 g but the answer is 41.3 g. I don't know where...
- Q What is the difference between an electrochemical cell and avoltaic cell? Is there any? If they are different how do each oftheir electrons flow?
- Q Calculate % yield of triphenylmethanol (crude and pure)Remember it is a two step calculations, so you should obtain thefollowing to aid in the calculations: the mass of first reagent,mass of...
- Q 9. Determine the amount of product. Do not forgetunits.How much lithium chloride (in grams) can be produced using 20grams of lithium hydroxide? Answer in three significant digits.(5 points)LiOH        +        KCl       à         LiCl       +       KOH
- Q How do I find the % Mass of sugar in Mt.Dew if I only have themeasured density of 1.04g/mL?
- Q Chapter 10: ClinicalLaboratory Procedures Case StudyA request for “ovaand parasites†was received in the laboratory in the lateafternoon. The specimen consisted of one polyvinyl alcohol (PVA)vial and one 10% formalin...
- Q 16. Write the balanced molecular equation, the ionic equationand the net ionic equation for the reaction that occurs whensolutions of CuSO4 and NH4OH are mixed.Molecular equation: (4 points)Ionic equation: (4...
- Q Tempered glass is made by heating glass to a temperature to 620ºC, then cooling it quickly by spraying the surface in a procedureknown as quenching. Quenching cools the outer surfaces...
- Q 1.)which metric, atom economy or e factor, is more important foraccessing the greenest procedure?
- Q TYPED RESPONSE ONLYChoose a metal to describe in depth; do not choose a nonmetalalready selected by another student. Include information on itsdiscovery, history, abundance, physical and chemical properties,and uses or...
- Q You are given 5mL of 3mg/mL protein solution. You are asked toprepare samples for SDS-PAGE containing 250ng, 500ng, 750ng, and1000ng. Your pipettes are calibrated to 2uL at the lower limit.Your...
- Q HW problems:1)Give the net ionic equation for the reaction that occurs whenaqueous solutions of lithiumcarbonate and barium nitrate are mixed.2)Which of the following solutions will have the highestconcentration of chloride...
- Q A solution is formed by adding 3.60 grams of solid bariumcyanide, Ba(CN)â‚‚, to 250.0 ml of 0.170M sodium cyanide, NaCN.Calculate the pH of the resulting solution. You may assume that...
- Q The concentration of an unknown must be in the range of theknown concentrations. You sometimes must dilute an unknown so thatthe concentration is lower than thehighest concentration measuredfor your standard...
- Q Inthe titration of 30.0 mL of 0.200 M (CH3)2NH with 0.300 M HI.Determine the pH at the 1/4 of the waypoint in this titration.Determine the pH at the eqivalence point...
- Q How much energy in kJ is required to fully vaporize (attemperature of boiling point = 2525C) a 270g sample of Al(s),initially at 25C?(Enthalpy of vap = 300. kJ/mol, enthalpy of...
- Q Draw the structures of ethanol and acetic (ethanoic) acid in theground and conjugate acid states and then account why acetic acidis a stronger acid than ethanol.
- Q The initial steps in polymerization to form Prussian Blue is aphoto-initiated reduction of Fe(III) to Fe(II).i. This is a charge-transfer transition – what kind of chargetransfer transition is it, and...
- Q 1.gives the correct order for atomic radius for Mg, Na, P, Siand Ar?2.Which one of the following elements is the most metallic? a.Arb.K c.Mg d.Al e,Na3.A gas mixture of Ne...
- Q Lycopene and beta carotene are important antioxidants found insome fruits and vegetables. Suppose an organic solvent was going tobe used to extract and measure lycopene from a new hybrid tomato....
- Q whycan sodium borohydride be preferred in reduction to alcohols overH2/Pt?
- Q A visible light spectrophotometric determination of penicillinmakes use of color-forming reaction of the penicillin. If thiscompound absorbs at 475 nm with an ε = 1560M-1cm-1, what would be calculated as...
- Q An ideal gas (which is is a hypothetical gas that conforms tothe laws governing gas behavior) confined to a container with amassless piston at the top. (Figure 2) A massless...
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