16. Which of the following measurements is most precise? O 12 books O 85 g O 75.7 m O 1.2 mm O none of the above

Q: 2. The rate constant for a first order reaction, SO,CI, → SO, +Cl, at 600 K is 2.2 x 10 s. What perc...

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Q: Which of the following salts acts like an acid when added to water? potassium nitrite e. both a and ...

A: Acid is substance which release hydrogen ions and base is substance which release hydroxyl ions when...

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A: Displacement reaction: when a highly reactive metal displaces the lower reactive metal from its salt...

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Q: Please answer questions 1 & 2 and show work.  1. Calculate the mass, in g, of chlorine in 25g of th...

A: 1)  Given, Mass of chlorofluorocarbon (CFCl3) = 25 g  Mass (in grams) in  Chlorine in 25 gram of chl...

Q: use a walsh diagram to explain which is more stable   BrF3 (Linear) or BrF3 (bent) . please explain...

A: Interpretation- To explain walsh diagram and and tell which is more stable BrF3 (Linear)  or BrF3(be...

Q: oxidation number

A:

Q: 1. What is a spectrophotometer used for in a cobalt chloride solution analysis?

A:

Q: How many significant figures are in each measurement? 1) 3.005 g 2) 820 m 3) 0.000 670 km 4) 0.405 ...

A: Given question is : How many significant figures are in each measurement = ?1) 3.005 g2) 820 m3) 0.0...

Q: В. С. :CI;

A: Halogenation of carboxylic acid at alpha- position is known as Hell-Volhard Zelinsky Reaction or HVZ...

Q: What happens when the following is added to conc. Sulfuric acid? (a) Cyclohexane (b) Cyclohexene ...

A: We have to tell the observation when we add cyclohexane, cyclohexene and toluene to concentrated sul...

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A:

Q: When [Cu2+] = 1.24 M, the observed cell potential at 298 K for an electrochemical cell with the reac...

A: The overall cell reaction :  Cu2+(aq) + Zn(s) ---> Cu(s) + Zn2+(aq)  The observed cell potential ...

Q: a solution has a concentration of OH- =4.0x10-5 M. what are the concentration of H3O+ and the pH of ...

A: pH of a solution can be defined as negative of logarithm of concentration of hydronium ions 

Q: The mass of an unidentified rock is 15.5 grams. Students determine the volume of the rock by placing...

A:   Tables -   Rock                 Density Range (g/cm3)  Coal.                    1.1 - 1.4 Peridoti...

Q: pH

A:

Q: (а) The IR spectrum below shows the important absorption bands for compound A (C7H1402). Its 'H NMR ...

A:

Q: Kc for the decomposition of ammonium hydrogen sulfide is 1.8 ´ 10-4 at 25°C. NH4HS (s)  NH3 (g) + H2...

A:

Q: он он но- OH OH Ó но- OH మద్నం HO HO Но- OH HO, ÓH This is a reducing tetrasaccharide and is made up...

A: In a reducing sugar, at least one carbon will have both hydroxy (-OH) group and ether (-OR) group. 

Q: 3. Solve the following. Express the answers in appropriate number of significant figures. Show your ...

A:

Q: Determine the volume, in mL, of a piece of aluminum foil if it has a mass of 1.3 cg. The density of ...

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Q: write the complete ionic equation for the reaction when (nh4)3po4 and na2so4 are mixed in an aqueous...

A:

Q: To which of the following would the addition of an equal volume of 0.60 M NAOH lead to a solution ha...

A: Since, PH=-log[H+]

Q: 3. When volume of a gas decreases under isothermic conditions, pressure will [ Select ] This is a(n)...

A:

Q: 2. A student pipets 5.00 mL of a 0.125 M solution of reagent A into an Erlenmeyer flask. Reagent A i...

A: Recall the given reaction                        A + 3B →Products Given that, 5.00 mL of a 0.125 M s...

Q: Predict the shape of SiF4,SF4 and XeF4 molecules. Explain why the shapes differ.

A: Shape of SiF4, SF4 and XeF4 = ?  Explain why shape is different. 

Q: When O2 is dissolved in water to form a solution, what would be the chemical notation on the reactan...

A: When oxygen is dissolved in water a solution is formed. 

Q: How much heat is required to convert 40.0 g of ice at -10.0 oC to 100.00 oC? The specific heat of ic...

A: Given : mass (m) = 40g  T1 = -10°C T2 = 100°C C = 2.1 J/g°C Heat required =?

Q: Name each epoxide: CH3 a. b. C. (two ways) (two ways) CH Provide a systematic name for each of the f...

A:

Q: Which point represents solid-liquid-gas equilibria? 1 atm Phase Phaso Phase II T O Phase II O b O d ...

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Q: Sodium lactate is the sodium salt of lactic acid. a) Use Acid-Base Properties of Salt Solutions, to ...

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Q: What is the concentration of a 3mL dilution of stock Erioglaucine with a molarity of 2.50 x 10^-6 in...

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Q: Calculate the mass percent composition of (NH4)2SO4 (Show work please)

A: The solution is as follows:  

Q: Given the following data on the conductivity of an unknown compound, determine: 1) the linear equati...

A: Conductivity = C X x C = conductance  x = Cell constant Cell constant x is same for one setup at all...

Q: Use an Excel spreadsheet to generate a titration curve for 50.00 ml. of 0.0200 M acetic acid (K, = 1...

A: The balanced chemical equation for the reaction between acetic acid and ammonia is:            CH3CO...

Q: PPH3 Na HM DS H. of

A: In this given question , 1 st step is PPh3 will attack C-I bond . In second step NaHMDS is base and ...

Q: The mass of HgBr2 precipitated when 15.00 mL of 0.337 M Hg(NO3)2 solution is added to excess KBr sol...

A: Given, Concentration of Hg(NO3)2 solution = 0.337 M = 0.337 mol/L Volume of Hg(NO3)2 solution = 15.0...

Q: How much heat is required to convert 40.0 g of ice at -10.0 oC to 100.00 oC? The specific heat of ic...

A:

Q: The solubility of HgF is 1.7 x 107 M at 25 °C. The solubility product constant, Ksp, for HgF is:

A: Given :-  Molar Solubility of HgF = 1.7 × 10-7 M  To calculate :-  Ksp value 

Q: Likely formula for organic chemistry AlCl? CF2Cl? NH?OH AlCl?

A: The molecular formula of the compound mainly depends on the charges of constituent elements. All ele...

Q: 2. Provide a synthesis of the following compounds. You may use valid organic structures to add group...

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Q: It binds the different components in a ceramic mixture. O coke O alum O feldspar O filler

A: The correct option is:  

Q: What is the percentage of manganese in the original sample?

A: Given  Mass of sample ore = 1.2354 g  Mass manganese sulphide = 0.2876 g  The percentage of manganes...

Q: 1. Discuss the chemical basis of the positive and negative results of the chemical tests performed i...

A: Oils become rancid.

Q: 67. This compound is called Steroid Glycerin Wax

A: Steroid contain 4 ring fused ring in a perticular manner  Glycerine is saturated hydrocarbon compoun...

Q: A novel compound named “sanaoline” with a partition coefficient (KD) of 6 was extracted from 5.0 gra...

A: Formula for partition coefficient w  = W[KD V/(KDV +v)]n Where w is reaming amount of sanaoline = ?...

Q: What is the best indicator to use for titration of HCL and THAM (tromethamine)? Options are methyl o...

A: The pH indicator range of given indicators is  3.0 (yellow) - 4.6 (blue)  Bromophenol Blue  3.0 (red...

Q: 16.85 To which of the following would the addition of an equal volume of 0.60 M NaOH lead to a solut...

A: Given :  Concentration  of NaOH solution = 0.60 M  pH = -log [H+]  So higher is the concentration of...

Q: A. The mechanism of reaction A is: CH,S Na CHCN O SN2 O E2 O SNl El B. B. The mechanism of reaction ...

A: We have given three reactions and we need to tell which type of reactions is this, All of these are ...

Q: _is a chromatography technique in which the stationary phase 14. is always lon exchange resin." Adso...

A: Chromatography is a technique in which we separate a single chemical compound from a mixture. If the...