CH HC

Q: For Na2CO3 titration, using two indicators, phenolphthalein and methyl orange, the stoichiometric re...

A: Given that, Titration of Na2CO3  with HCl. Stoichiometric  relationship of Na2CO3  and HCl  is to be...

Q: The pH of a solution of 19.5 g of malonic acid in 0.250 L is 1.47. The pH of a 0.300 M solution of s...

A: 1- We will determine the first Ka1 :  a) Determine H+ ion concentration ;  [H+] = 10-pH   [H+] = 10-...

Q: Draw the skeletal structure of: cyclohexane-1,2-dicarbaldehyde

A: Draw the skeletal structure of: cyclohexane-1,2-dicarbaldehyde

Q: This is the amount of solute (in grams) required to make a liter of saturated solution Solubility Mo...

A: The definition of Solubility, degree to which a substance dissolves in a solvent to make a solution....

Q: Instructions: Below is a Concept Map on Enthalpy with missing concepts. Provide the missing concept ...

A: Lattice energy is the energy required in the conversion of one mole of an ionic compound into its co...

Q: A buffer solution after the addition of 20.0 mL of 1.00 M NaOH solution to 500.0 mL of a buffer solu...

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Q: 3. (a) When 1.50 mol of aluminum metal and 3.00 mol chlorine gas combine in the reaction , 2 Al(s)+ ...

A: Given: The chemical equation: 2 Al (s) + 3 Cl2 (g) → 2 AlCl3 (aq) 2 mol     3 mol            2 mol M...

Q: Treatment of r-butyrolactone with two equivalents of methylmagnesium bromide, followed by hydrolysis...

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Q: Gas Law: Find moles of Hydrogen and convert it to grams. Pressure - 100 kPa Volume - 2.1189 x 10^8 L...

A: Given:- Pressure = 100 kPa = 100x 1000pa Volume = 2.1189 x 108 L = 2.1189 x 108 ÷ 1000 m3  T = 283.1...

Q: What are the possible reasons why there are no spots on the Developed Plate after analysis?

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Q: . Name the following compounds. H 1) 2) H3C H.

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Q: Did the concentration of the reactants affect the amount of electricity produced?

A: A question based on electrochemistry, which is to be accomplished.

Q: a) Sketch the net force vs. distance curve, for a covalent bond. b) Directly beneath, sketch the cor...

A: Force for a covalent bond  F=kq1q2r2   Energy for a covalent bond E=kq1q2r  

Q: When treated with an acid catalyst, 4-hydroxybutanoic acid forms a cyclic ester (a lactone). Draw th...

A: We have to predict structure formula of lactone as well as name.  

Q: Which reagant will more likely to form precipitate during the analysis of an unknown salt? a. NaOH ...

A: For example, on adding NaOH to Ca(NO3)2, Ca(OH)2 is obtained as white precipitate which is sparingly...

Q: TRUE FALSE The density of gas is directly proportional to its pressure. In evaporation, the latent h...

A: Explanation  According to Boyle's law at constant temperature the pressure and volume are having inv...

Q: Which of the following acid/ conjugate base pairs would function best as a buffer at physiological p...

A: 1- First we should know about physiological pH it's value is 7.40 it's maintain the blood pH because...

Q: How much carbohydrates calories in one food product serving, if it contains 23 of carb? 46 4 92 207

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Q: 21. Catabolism of amino acid carbon skeletons; location, importance.

A: Catabolism : it is the process where complex biomolecules are break down to the simple and smaller c...

Q: Give the IUPAC name

A: The IUPAC name of the given compound is:

Q: Complete the following reaction sequence. HN H CH;OH A heat он

A: Organic reaction mechanisms:

Q: A 20.00 mL sample of urine is spiked with 1.00 mL of 300. ppb Cu²+ and this mixture gives a response...

A: Atomic absorption spectroscopy is a quantitative technique which is aimed at determining the concent...

Q: The following changes will occur when NaF is added to HF = H30*+F" Equilibrium will shift from left ...

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Q: mmHg and atm.

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Q: A- Each of the following alcohols is named incorrectly. Give the correct IUPC name for each alcohol....

A: IUPAC Nomenclature: First of all identify the longest carbon chain which is known as tge parent cha...

Q: A. Balance the chemical equation below and compare the moles of its reactants and products. From it,...

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Q: A sample of aluminum foil contains 4.50×1023 atoms.4.50×1023 atoms. What is the mass of the foil?

A: Given,  Number of atoms of Al foil = 4.50 x 1023 atoms  Mass of the Al foil = ?   

Q: QUESTION 28 This is a process in which the precipitate is heated for an hour or more in the solution...

A: Formed precipitation heating is called as ?

Q: For the reaction   3KOH+H3PO4⟶K3PO4+3H2O3KOH+H3⁢PO4⟶K3⁢PO4+3⁢H2O   how many grams of phosphoric a...

A: Given  Reaction  3KOH + H3PO4   →  K3PO4  +   3H2O Mass of KOH     = 45.9 gram  Mass of H3PO3  = ? 

Q: A small von Weirman ratio is desirable, therefore it is advisable to form a precipitate by I. stirri...

A: I only I) Stirring reagent  is right answer    (III) wrong BECAUSE The solution should be diluted to...

Q: A metal has an atomic radius of 0.1385 nm . The volume of its cubic unit cell is 0115 x10-23 cm³. Wh...

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Q: strongest acid

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Q: The [OH–] = 1.3 x 10–6 M for a 0.025 M solution of a weak base. Calculate the value of Kb for this w...

A: Kb value for given weak base is 5.2×10^-5.

Q: Illustrate how diazomethane and ozone can both behave as 1,3-dipoles. Indicate, by drawing their res...

A: A question based on intermolecular interaction, which is to be accomplished.

Q: Which data point(s) reflect pH = pka? 14 12 10 (iv) PH 6. (iii) (ii) 4. (i) 10 15 20 25 30 35 40 Vol...

A: Henderson- Hesselbalch equation pH = pKa + log [salt]/[acid] When [salt] = [acid]   Then pH = pKa  

Q: Which of the following are true for ligands, EXCEPT: These are molecules that can provide 1 or more ...

A: Ligand : The ligand is the species that have one or more than one loan pair and form a co-ordinate b...

Q: Try to name the following compounds using the E/Z convention: What is the name of this molecule?

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Q: The normal boiling point of a certain liquid X is 121.00 °C, but when 0.12 kg of benzamide (C,H,NO) ...

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Q: NBS A NBS B CN -N NBS

A: NBS is N-bromosuccinimide which is used as a brominating agent acting as a source of bromine free ra...

Q: What is the role of water in Baeyer's Test?     Negative Control     Positive Control     Pola...

A: In any experimentation, control is used to check whether the obtained result is due to the test vari...

Q: QUESTION 29 For Na2cO3 titration, using two indicators, phenolphthalein and methyl orange, the stoic...

A: The Na2CO3 and HCl react with each other to form  sodium chloride (NaCl) , Carbon dioxide (CO2) and ...

Q: 2. If a sample of gas occupies 6.72 L at STP, what volume will it occupy at 25°C and 800 torr? 3. A ...

A: The calculation is given below. 

Q: What reagent/s is/are needed to confirm the identity of the cation in the diagram?

A: only the MgCl2 give white precipitate with NaOH SO Mg2+ is cation give white precipitate barium (Ba)...

Q: HO HO. OCCH3 II ethanol H2SO4 benzoic anhydride Methanol H2SO4 acetic anhydride thionyl chloride

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Q: change in internal energy

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Q: Why different molecular bonds have different IR spectroscopic peaks or bands? Please shortly write a...

A:  when a infrared light goes through a organic compound , the compound absorbed some of the frequenci...

Q: Based from the given critical pressure values in the table, rank the followingcompounds based on the...

A: 1 )OXYGEN <METHANE <CARBONMONOXIDE <NITROGEN <HYDROGEN at critical temperature . 2)if ap...

Q: How can you use ion exchange Chromatography to de-ionize water? Please shortly write at your own wor...

A: Answer -  Ion exchange Chromatography  - Ion chromatography (or ion-exchange chromatography) separat...

Q: Given 6.150 g of BaCl2, how many moles of chlorine atom is in your sample?

A: 1 mole of BaCl2 contains 1 mole of barium atoms and 2 moles of chlorine atoms. 1 mole of an atoms co...

Q: Potassium metal and chlorine gas combine to form potassium chloride. 5. Aluminum and hydrochloric a...

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