A student dissolved a compound in water and added hydrochloric acid. No precipitate formed. Next, she bubbled H2S into this solution, but again, no precipitate formed. However, when she made the solution basic with ammonia and bubbled in H2S , a precipitate formed. Which of the following are possible as the cation in the compound? - CA2+ - Ag+ - Cd2+ - Mn2+

Q: A solution is prepared that is initially 0.095 M in propanoic acid (HC,H,Co,) and 0.31M in potassium...

A:

Q: In SDS page, the elute from the column first. proteins will move through the gel fastest and first, ...

A: SDS page and size exclusion chromatography are methods to separate proteins . In SDS page, charged m...

Q: Which of the following polysaccharide will be MORE VISCOUS at acidic pH?   a. amylopectin   b. a...

A: Viscous means difficulty in flow of liquid or solutions.  Polysaccharides forms by linkage of 2 or m...

Q: Which of the following ionic compounds is most likely to dissolve in water? a.Fe(OH)3 b.AgBr c.CaSO...

A:

Q: 6. What is the concentration of her solution in parts per million? ( 5Tbsp. of NaCIO (sodium hypochl...

A:

Q: Enzyme kinetics a. How to determine Km and Vmax of a-glucosidase enzyme isolated from weathered rice

A:

Q: Syneresis is a process by which there is the loss of water trapped within the gel matrix through the...

A: Syneresis is a process by which there is loss of water trapped within gel matrix through release of ...

Q: Kinetic Molecular Theory assumes gas particles have no attraction/interaction with one another. A) U...

A: The solution of the question is given below: 

Q: n a calorimeter, 300 mL of 0.22 mol/L of calcium chloride is mixed with 200 mL of 0.33 mol/L of sodi...

A: Moles of substance = Molarity * Volume  Heat given in any process = Mass * Specific heat * Temperatu...

Q: ume standard conditions. Refer to the list of standard reduction potentials. Spontaneous as written ...

A: (a) Au+3(aq) + 3Ag(s)----> Au(s) + 3Ag+(aq) (b) I2(s) + Cu(s)----> 2I-(aq) + Cu+2(aq) (c) Zn+2...

Q: identity and draw structural isomers and/ or stereoisomers where possible. For each isomer, clearly ...

A: We have to find out the all isomer of CH3(CH2) 3CH2OH

Q: When an exothermic reaction is starting: a. The reacting materials will not change their energy b....

A: An exothermic reaction is the one in which heat is released in the process of reaction. Endothermic ...

Q: Provide the structure of the product(s) with stereochemisty if appropriate. If multiple products ind...

A:

Q: Write the empirical formula for at least four ionic compounds that could be formed from the followin...

A: Write empirical formula of the given compounds---

Q: A chemist must prepare 200.0 mL of hydrochloric acid solution with a pH of 1.10 at 25 °C. He will do...

A: We have to calculate the volume of concentrated acid to be measured out .  

Q: Fill in the missing chemical formulae in the tables below. base conjugate acid H,0 Hpo, 2- НРО 4 OH

A:

Q: A 100 mL solution of 0.1 M amino acid (AA) at pH 1.0 was titrated with NAOH solution. The pH was mon...

A: We have to predict the identity, isoelectric point, and Pka.  

Q: Problem 2. Consider the following reaction: OH + CO CO2+H The value of the forward rate coefficient ...

A:

Q: Draw Newman Projections for the best and worst conformations of the structure shown, relative to the...

A: The best conformation is the one in which the steric repulsions are the minimum while the worst conf...

Q: 4. Calculate the mole fraction of sodium hypochorite and water in Aki's solution. ( 5Tbsp. of NaCIO ...

A: Introduction :  Mole fraction can be defined as the number of moles of the solution, the number of m...

Q: Each row of the table below describes an aqueous solution at abo Complete the table. That is, fill i...

A:

Q: 4. A solution of a nonelectrolyte contains 35 g of solute dissolved in 250 g of water. The boiling p...

A: 4.  Equation for elevation of boiling point is given         by,      ΔTb  =  i  ×  kb  ×  m ΔTb   =...

Q: H,C CO,H c3D c=C CH,CH;CH; H

A:

Q: A mixture of spaghetti and water is separated using a strainer, a physical method of separation. Wha...

A: Filtration : It is the process of separating solid matter from the fluid one using a structure throu...

Q: 1.4 Name the following reaction and explain why the successive reaction does not occur. R CH N2 CH2N...

A: The name of the above reaction is Buchner-Curtius-Schlotterbeck Reaction. Mechanism for the reaction...

Q: What is the IUPAC NAME of the structure? Ho C = CH " CH2 - CH = CH2

A:

Q: The base protonation constant K, of azetidine (C,H,NH) is 1.5 × 10¯ °. Calculate the pH of a 1.0 M s...

A:

Q: Calculate the pH of the following: 1. 0.10 M 2-aminophenol|

A: Given: Concentration of 2-aminophenol (which is a base like NH3 and hence assuming it B) = 0.10 M  

Q: How does the rate law for the overall reaction match the experimental rate law? Do the elementary st...

A:

Q: Draw the product formed when the compound shown below undergoes a reaction with Cl2 in H2O.

A: electrophilic addition of halogen to alkene  attack of water as nucleophile to the cyclic intermedia...

Q: 8- The following two half-reactions are used to form an electrochemical cell: Oxidation: SO2(g) + 2 ...

A: Here the standard electrode potential are given. First we have to write the balanced chemical reacti...

Q: Choose the correct starting material for the following reaction. он MgBr MgBr H. A B D

A:

Q: What is the major organic product obtained from the following reaction? OMe COM. 1. NaOCH3 CH3OH OMe...

A:

Q: Redraw the structure of the anti-cancer agent 1,2,4-trioxane in your answer sheet. Identify the thre...

A:

Q: If a buffer solution is 0.560 M in a weak acid (Ka=5.3×10−6) and 0.120 M in its conjugate base, what...

A:

Q: calculate the total amount of pressure (absolute pres.) in atmospheres that Mike is exposed to at 22...

A: Pressure at a certain depth = ρgh + atmospheric pressure 1 atm = 30 ft By using the unitary method o...

Q: What is the major organic product obtained from the following reaction? OCH2CH3 1. NaOCH2CH3 CH3CH2O...

A:

Q: A chemist prepares a solution of magnesium chloride (MgCI,) by measuring out 25.5 mg of MgCl, into a...

A: Given:: mass of MgCl2 = 25.5 mg = 0.0255 g molar mass of MgCl2 =95.211 g mol-1 volume = 50 ml = 0.05...

Q: The pH of a 0.1 M solution of a monobasic acid P is 1.0 while the pH of a 0.2 M solution of another ...

A: Here we have to explain the properties the two monobasic acid P and Q . Given - The pH of 0.1 M P is...

Q: __Zn (S) + ___ CuSO4 (aq) > __Cu (S) + __ ZnSO4 (aq) > ___Mg (s) + ___ O2 (g) > __HCl (aq) + __NaOH ...

A:

Q: Calculate the number of moles of KOH in 5.70 mL of a 0.310 M KOH solution. mol What is the pOH of th...

A: Molarity =moles ÷ volume(L)  pOH = -log [OH-] 

Q: A chemist dissolves 635. mg of pure potassium hydroxide in enough water to make up 80. mL of solutio...

A:

Q: If a peak (transition) in the IR spectrum of a compound is observed at 1560 cm for the C=0 moiety, c...

A:

Q: Provide the structure of the product(s) with stereochemisty if appropriate. If multiple products ind...

A:

Q: Caffeine In water @ 100°C

A:

Q: please draw the complete mechanism and include arrow pushing (if you could provide an explanation, i...

A: Here we have to write mechanism of the following given reactions.

Q: CH3 is exposed to excess conc. HBr at high temperature

A:

Q: 4) What is the shape of the complex ion? 5) Are the ligands strong or weak? 6) Is the compound high ...

A:

Q: Problem 24.25 Draw the products when each pair of compounds is treated with "OH, H,O in a Robinson a...

A:

Q: Predict whether syn- or anti-Elimination took place: OH Br

A: Detail explanation and mechanism is shown below