Briefly describe how a phase-contrast microscope work and the kind of image that it produces. Give a specific use for this type of microscope.

Q: The molar solubility of iron(II) carbonate in a 0.110 M iron(II) nitrate solution is М.

A: Given :: Molarity of Fe(NO3)2 = 0.110 M Ksp of FeCO3 =3.07×10-11 Molar solubility (S) of FeCO3 in…

Q: Write the formula and appropriate structure(s) for each of the following. a. potassium…

A:

Q: lect which molecule is the better nucleophile in e following pair: Br- or Cl- in H20 СНЗО-or CНЗОН…

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Q: A voltaic cell is 'constructed from a standard AlT|Al half cell (E° red -1.660V) and a standard Mn+…

A: Given that, a voltaic cell is constructed from a standard Al3+|Al half-cell (E0red = -1.660 V) and a…

Q: In your testing, several precipitates are formed and then dissolved as complexes. These are the…

A: The answer is given below

Q: In lab, you measure out 13.20 mL of 1.18M phosphoric acid to titrate with KOH. What volume (in mL)…

A: Volume of H3PO4 = 13.20 ml Molarity of H3PO4 = 1.18 M Molarity of KOH = 0.848 M

Q: Consider the following reaction and that H2CO3 is a weak acid, H2CO3 + H2O ==== HCO3- + H3O+. If…

A: Acid can be defined as a species that give hydrogen ions in solution. Acid can be weak or strong on…

Q: 3. The pH of a 0.10 M HCN solution is 5.3. What is the [H*]? What is the [CN-]? What is the K?

A: Please find your solution below : pH is a measure of how acidic or basic a substance. It is defined…

Q: A compound with molecular formula C3H100 has the H NMR spectrum shown. Which of the choices shows…

A: C8H10O ( DBE = 8- (10/2) + 1 = 9-5 = 4 . The compound name is ethoxy benzene.

Q: Draw the starting material that would efficiently generate the products shown. NABH, CH;OH HO HO

A: Sodium borohydride, NaBH4 is a reducing agent and it can selectively reduce a carbonyl functional in…

Q: 4. If the protein reacts with the blue (580 nm) dye to form a purple color (550 nm) complex, draw…

A: Protein reacts with blue dye to form a purple complex. We have to draw diagram to show how…

Q: How many grams of zinc metal will be deposited from a solution that contains Zn2+ minutes. ions if a…

A: I=0.785 amperes t=61.9minutes n = 2 w=ZIt = 65.3 × 0.785× 61.9 ×60 /2× 96500 w =0.986gm

Q: Which of the following reactions generate a three-membered ring as an intermediate? O Free radical…

A:

Q: Determine K for a reaction at 200 K if AG° =15.1 kJ/mol. (R = 8.314 J/mol · K)

A: Given :-  ∆G° = 15.1 kJ/mol  R = 8.314 J/mol.K  T = 200 K  To determine :-  Value of K

Q: Use the table on the information page to predict if a reaction will Occur when Fe (s) and…

A:

Q: What is the source of energy for the heat of reaction in the neutralization reaction? Hint: Consider…

A:

Q: How many grams of iron metal will be deposited from a solution that contains Fe ions if a current of…

A: Given-> Current (I) = 0.640 ampere Time(t) = 32 minutes =32×60 second = 1920 second

Q: Consider this metal complex: 3- ОН F Fe OH F Complex A Now decide whether each complex in the table…

A: Isomers are compounds in which position of ligands is different .  Different compound would be that…

Q: The reaction between nitrogen monoxide and oxygen is given below: 2 NO(g) + 02(9) - 2 NO2(g) We…

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Q: The pOH of a 0.25 M weak base is 5.45. Determine Kb

A: To determine kb if the pOH of a 0.25 M weak base is 5.45.

Q: State whether each of the following lost or gained electrons when they formed in ionic charge. (be…

A:

Q: e. Calculate the pH of a solution containing 50.0 mL of 0.150 M of benzoic acid after the following…

A: First we would Calculate moles of both acid and base. Then we would draw an ICE table to calculate…

Q: What is the molar solubility lead(II) bromide when it is added to pure water, if the Ksp (PbBr2) is…

A: Given: The Ksp of PbBr2 = 6.60 × 10-6 We have to calculate the molar solubility lead(II) bromide…

Q: Both the Hydroboration and Free Radical addition reactions result in the Anti _________________…

A:

Q: How many seconds are required to deposit 0.175 grams of chromium metal from a solution that contains…

A: Electrolysis is a process that uses direct electric current to drive non-spontaneous chemical…

Q: Hint: you need to loose a carbon from one of the starting materials. Insctie pts) OCH3 Hint: you…

A: Note : Retrosynthesis followed by synthesis.

Q: Calculate the pH of a solution which is 0.245 M in NH3 and 0.245 M in NH4CI. The K, for ammonia is…

A: Given, [NH3] = 0.245 M [NH4Cl] = 0.245 M Kb for ammonia = 1.8 × 10-5 pH = ?

Q: What is the calculated value of the cell potential at 298K for an electrochemical cell with the…

A: Given that, a cell reaction is Cu2+aq + Zns →Cus + Zn2+aq. The concentrations are [Cu2+] = 1.16 M…

Q: The conversion of dihydroxyacetone to glyceraldehyde-3-phosphate in glycolysis has a standard free…

A:

Q: Determine the standard cell potential (E0cell) of 2Cr(s) + 3Fe3+(aq) → 3Fe(s) + 2Cr3+(aq) of the…

A: Here Cr is oxidised to Cr3+ . And Fe3+ is reduced to Fe. So Fe3+  will act as cathode. And Cr act as…

Q: The solubility of iron(III) hydroxide is 8.96 × 10-4 g in 100 kL of water at 25 C . Determine the…

A: Given :  Solubility of Fe(OH)3 = 8.96 x 10-4 g/100kL

Q: 1°F-NMR spectrum of CIF3 exhibits a doublet and a triplet with intensity ratio 2:1. Predict the…

A: NMR spectrum  of ClF3 shows one doublet for two axial F atoms and one triplet for one equatorial F…

Q: A voltaic cell is constructed in which the anode is a Fe2+|Fe3+ half cell and the cathode is a F|F,…

A: In voltaic cell oxidation is occur at anode whereas reduction is occur at cathode.

Q: What would be the result if Na2SO4 was added to milk? Would one be able to detct the presence of…

A: Na2SO4 when dissolved in water gives Na+(aq) and SO42-(aq). Milk contains calcium ion, Ca2+(aq).

Q: 38. Rank the following molecules from lowest to highest boiling point: CH4, He, HF, C4H10. C,H10 <…

A: Boiling point: The temperature at which the vapor pressure of a liquid becomes equal to the…

Q: From the titration curve below, estimate the "target pH" to synthesize potassium dihydrogen…

A:

Q: Enumerate atleast three examples each for a spotaneous reaction and a nonspontaneous reaction

A: Spontaneous reaction : These are the reactions which occur on their own that means no external…

Q: What are two evidences that would indicate that a double replacement reaction occurred?

A: Double displacement reaction : It involves the exchange of cations and anions of the reactants.…

Q: Diels-Alder reaction A E

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Q: For an ideal gas: 1. Assuming that all quantities are held constant except for pressure and…

A: #1.  Given all the quantities are constant except P and T.

Q: How many ml o

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Q: You were given with 0.025 M acetic acid and 0.025 M NaOH. You were then instructed to prepare a 10.0…

A: The required buffer solution is 10.0 mL of 0.02 M acetate buffer at pH 5.5. For acetic acid,…

Q: 8. What organic starting materials are needed to synthesise the compound below by reductive…

A: In a reductive amination reaction, carbonyl compound reacts with ammonia or amine to form an imine…

Q: 10. Alkyl diazonium salts decompose to form carbocations, which go on to form products of…

A:

Q: Which of the following is the strongest oxidizing agent?   SO2−4SO42−(aq) Li+(aq) I−(aq) MnO4-(aq)…

A: Reduction is a process in which there is gain of electrons and oxidation is a process in which there…

Q: Consider the apparatus shown below with the valve closed. The volume and pressure of each gas is…

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Q: ctron reorganization.

A:

Q: C C6 H5 NH3NO3, NANO3, NaOH, HOC,H5, KOC, H5, C6 H3 NH2, HNO3 K(C6H; NH2) = 3.8 x 10-10 К. (НОСНs)…

A:

Q: coefficient for H2O(l)

A:

Q: Enter your answer in scientific notation. Be sure to answer all parts. 241 Pu Calculate the nuclear…

A:

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.