PT#15 1.) Question: Vitamin C (ascorbic acid) contains 40.92 % C, 4.58 % H, and 54.50 % O, by mass. The  experimentally determined molecular mass is 176 amu. What is the empirical and chemical  formula for ascorbic acid?

Q: The yellow precipitate, barium sulfate (BaSO4), is formed when sodium sulfate (Na2SO4) reacts with b...

A: Given: Mass of sodium sulfate = 12.50 g Mass of barium bromide = 28.0 g Actual yield of barium sulfa...

Q: Hydrogen (H,) gas and oxygen (o,) gas react to form water (H,O) vapor. Suppose you have 5.0 mol of H...

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Q: strong acids, weak acids, strong bases, or weak bases.

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Q: Consider the reaction between sodium metal and chlorine gas: 2Na (s) + Cl2 (g) 2NACI (s) a. If 10.0 ...

A: Recall the reaction, 2Na(s) + Cl2(g) -----> 2NaCl(s) Moles of Na = 10.0 mol moles of Cl2 = 10.0 m...

Q: write the rate law for the following reactions. (assume each reactions follow an elementary rate law...

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Q: *.Types of corrosion are Eight. O Nine. Seven. O O

A: Types of corrosion:

Q: Given CH4 (g) + CI2 (g) ---à CH3CI (g) +CHI (g). Ten grams of CH4 and 40.0g of chlorine gas undergo ...

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Q: Use the Henderson-Hasselbach equation to perform the following calculations. The K, of acetic acid i...

A: Molar mass of sodium acetate trihydrate = 136.08 g/mol

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A: Fruit juice is a refreshment in summer.We can easily prepare fruit juice in house. Here we have to m...

Q: What are acids often using in .measuring alkalinity H2SO4 and HNO3. O H2S04 , HCI and HNO3. H2S04 an...

A: Sulphuric acid, hydrochloric acid and nitric acid most oftenly used in measuring the alkalinity of t...

Q: Use the systematic treatment to get the concentrations of all the species in a solution of: c.) 0.0...

A: Molarity of Solution = moles of solute/volume of solution Molar mass of K2Cr2O4 = 166 g/mol 1 M of s...

Q: Ammonia (NH3) chemically reacts with oxygen gas (02) to produce nitric oxide (NO) and water (H,0). W...

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Q: Polyhydroxylated ketones and aldehydes, such as the aldopentoses and the ketopentoses, are also know...

A: These are hydrates of carbon. General formula is written as Cx(H2O)y . As there are many molecules t...

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A: Boiling point depends on the intermolecular forces. Higher is the intermolecular force, more is the ...

Q: Balance th

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Q: Writing the net equation for a sequence of reactions OC D 0/5 ARLYC There are two steps in the usual...

A: We have to add these two equation and balanced in order to get final reaction.

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A: Cyclobutene on ozonolysis gives butane diol and upon catalysis with 2 equivalent H2  gives cyclobuta...

Q: .48 Copper .52 Oxygen What is empirical formula

A: Empirical formula of a compound is written by the simplest ratio of various elements present in the ...

Q: Nitric acid is often manufactured from the atmospheric gases nitrogen and oxygen, plus hydrogen prep...

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Q: Aqueous hydrochloric acid (HCI) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium ...

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Q: Observation: vlddısh brown of Bra decsloun -Br Br CH,CI, Br2, H20 Cl2, CCI. HBr H3C H2, Pt H,0, H,0 ...

A: We have to complete the given reaction sequence.  

Q: ALKENE/ ALKYNE REAGENTS(S) AND MAJOR PRODUCTS(S) CONDITIONS ? 1. КMпO, ОН- 2. Н,О+ A. В. C.

A: The reaction of disubstituted alkyne with KMnO4/OH- followed by acidic hydrolysis, produces carboxyl...

Q: What is the name of the major product of the following synthetic scheme? OH 1. CH3CH2NH2, 275 °C 2. ...

A: Secondary amine. see below 

Q: (b) Calculate Amax for the following compounds. () (i)

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Q: Given reaction A+ 2 B→3 C+4D with following standard enthalpies of formation AH,O: A = 10.0 kJ/mol, ...

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Q: Indicate how the concentration of each species in the chemical equation will change to reestablish e...

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A: Using a melting point apparatus, Determine the melting point of obtained crude aspirin and recrytal...

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Q: Kindly show complete solutions. Report the final answer in the proper number of significant figures....

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A: Volume/volume percentage (% v/v) is the measurement of concentration of substance in solution in vol...

Q: www-awu.dieks.com/aiekscgi ARL O THERMOCHEMISTRY Calculating specific heat capacity A chemist carefu...

A: Given,  The mass of a substance = 623.0 g.       The heat needed to increase the temperature from 2....

Q: III. Complete the table below. Show complete solutions. Box/Encirce your final answers reported in p...

A: Given,  12.58 g KOH dissolved in 100 ml ethanol.  Mass of KOH = 12.58 g  Molar mass of KOH = 56.1 g/...

Q: Calculate the value of the equilibrium constant, Ke , for the reaction Q(g)+X(g) = 2 M(g)+N(g) given...

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Q: required components in an electrochemical corrosion cell. Four. O Two. O Three.

A: Electrochemical corrosion cell is defined as when two dissimilar metals are connected to each other ...

Q: Enumerate three (3) characteristics of a substance that can be separated from a mixture by steam dis...

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Q: .Cathode is . terminal Positive. O Negative. O

A: Cathode is which type of terminal?

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A: Given :  Volume of sample = 3.52 ml  Volume of NaOH solution = 10.59 ml  Concentration of NaOH solut...

Q: Answer the following:- (a) Write the monomers involved in the preparation of epoxy resins.

A: Monomer involved in epoxy resins synthesis is BISPHENOL-A AND EPICHLOROHYDRIN.

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Q: The diagram represents the equilibrium state for the reaction X,(g) + 2 Y(g) = 2XY(g) Assuming the v...

A: Given reaction at equilibrium stage is :  X2 (g) + 2Y (g)  <--------------> 2XY (g)  Volume of...

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A: Types of bonds in the given compounds:

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Q: 6. In your own words, explain how spectrophotometer works. List down its parts and give their corres...

A: 6. In your own words, explain how spectrophotometer works. List down its parts and give their corres...

Q: left left at equilibrium right right at equilibrium left right at equilibrium

A: A is represented by red sphere . B is represented by blue sphere . Reaction :-  A2 + B2 <--------...

Q: Calculate the pH of the following solutions. 0.40 M phthalic acid

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Q: Calculate the pH of the following solutions.  0.10 M pryidoxal-t-phosphate hydrochloride

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Q: (c) Trans-1-phenyl-1,3-butadiene has max = 280 nm (E 27,000). Calculate the concentration of a solut...

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Q: Iron and water react to form iron(III) oxide and hydrogen, like this: 2 Fe(s)+3 H,O(g)-Fe,03(s)+3 H,...

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Q: Use the systematic treatment to get the concentrations of all the species in a solution of: a.) sat...

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Q: Which of the following alkyl halides would afford the indicated product upon reaction with sodium et...

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.